checkpoint: Lost My Phone app - SMS triggers, DND override, mediaPlayback FGS
This commit is contained in:
avi
commit
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16 changed files with 1147 additions and 0 deletions
46
app/build.gradle.kts
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46
app/build.gradle.kts
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plugins {
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id("com.android.application")
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id("org.jetbrains.kotlin.android")
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}
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android {
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namespace = "com.example.lostmyphone"
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compileSdk = 34
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defaultConfig {
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applicationId = "com.example.lostmyphone"
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minSdk = 24
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targetSdk = 34
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versionCode = 1
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versionName = "1.0"
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}
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buildTypes {
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release {
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isMinifyEnabled = false
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proguardFiles(
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getDefaultProguardFile("proguard-android-optimize.txt"),
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"proguard-rules.pro"
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)
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}
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}
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_17
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targetCompatibility = JavaVersion.VERSION_17
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}
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kotlinOptions {
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jvmTarget = "17"
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}
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}
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dependencies {
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implementation("androidx.core:core-ktx:1.12.0")
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implementation("androidx.appcompat:appcompat:1.6.1")
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implementation("com.google.android.material:material:1.11.0")
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implementation("androidx.activity:activity-ktx:1.8.2")
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implementation("androidx.constraintlayout:constraintlayout:2.1.4")
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implementation("androidx.lifecycle:lifecycle-service:2.7.0")
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implementation("androidx.lifecycle:lifecycle-process:2.7.0")
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}
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3
app/proguard-rules.pro
vendored
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3
app/proguard-rules.pro
vendored
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@ -0,0 +1,3 @@
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# Add project specific ProGuard rules here.
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# Keep the SMS receiver and service since they are referenced by the manifest.
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-keep class com.example.lostmyphone.** { *; }
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71
app/src/main/AndroidManifest.xml
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71
app/src/main/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools">
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<!-- Requested special access: grants the app the ability to MUTE notifications
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but importantly allows bypassing Do Not Disturb restrictions for audio. -->
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<uses-permission android:name="android.permission.ACCESS_NOTIFICATION_POLICY" />
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<!-- Required to intercept SMS broadcasts (the app's primary trigger mechanism). -->
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<uses-permission
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android:name="android.permission.RECEIVE_SMS"
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android:protectionLevel="dangerous" />
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<!-- Required for the foreground trailing service and foreground service permission checks. -->
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<uses-permission
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android:name="android.permission.FOREGROUND_SERVICE"
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tools:targetApi="34" />
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<!-- While starting a mediaPlayback foreground service on Android 14+ you need this. -->
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<uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
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<!-- Required to read the audio MediaStore for the "PLAY_SONG" trigger. -->
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<uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
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<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
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android:maxSdkVersion="32" />
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<uses-permission android:name="android.permission.WAKE_LOCK" />
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<uses-permission android:name="android.permission.VIBRATE" />
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<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
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<application
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android:allowBackup="true"
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android:icon="@drawable/ic_launcher"
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android:label="@string/app_name"
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android:supportsRtl="true"
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android:theme="@style/Theme.LostMyPhone"
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tools:targetApi="34">
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<!-- Main activity: UI, permission status, and launching DND access settings. -->
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<activity
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android:name=".MainActivity"
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android:exported="true"
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android:launchMode="singleTop"
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android:theme="@style/Theme.LostMyPhone">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<!-- BroadcastReceiver: intercepts incoming SMS to detect RING_NOW / PLAY_SONG. -->
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<receiver
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android:name=".SmsReceiver"
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android:exported="true">
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<intent-filter android:priority="999">
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<action android:name="android.provider.Telephony.SMS_RECEIVED" />
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</intent-filter>
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</receiver>
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<!-- Foreground service: performs volume override + DND-aware playback. -->
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<service
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android:name=".RingService"
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android:exported="false"
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android:foregroundServiceType="mediaPlayback">
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<intent-filter>
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<action android:name="com.example.lostmyphone.action.RING" />
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</intent-filter>
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</service>
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</application>
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</manifest>
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167
app/src/main/java/com/example/lostmyphone/MainActivity.kt
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167
app/src/main/java/com/example/lostmyphone/MainActivity.kt
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package com.example.lostmyphone
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import android.Manifest
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import android.app.NotificationManager
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import android.content.Intent
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import android.content.pm.PackageManager
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import android.graphics.Color
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import android.os.Build
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import android.os.Bundle
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import android.provider.Settings
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import android.widget.Button
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import android.widget.TextView
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import android.widget.Toast
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import androidx.activity.result.contract.ActivityResultContracts
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.content.ContextCompat
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import androidx.lifecycle.Lifecycle
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import androidx.lifecycle.LifecycleEventObserver
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class MainActivity : AppCompatActivity() {
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private lateinit var tvStatus: TextView
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private lateinit var tvDnd: TextView
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private lateinit var btnSmsSettings: Button
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private lateinit var btnGrantNotifications: Button
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private lateinit var btnDndSettings: Button
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private lateinit var btnTestRing: Button
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private val requestPermissionLauncher =
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registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) {
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refreshPermissionUi()
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}
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private val openDndSettingsLauncher =
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registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
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refreshPermissionUi()
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Toast.makeText(this, R.string.toast_dnd_checked, Toast.LENGTH_SHORT).show()
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_main)
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tvStatus = findViewById(R.id.tvStatus)
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tvDnd = findViewById(R.id.tvDnd)
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btnSmsSettings = findViewById(R.id.btnSmsSettings)
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btnGrantNotifications = findViewById(R.id.btnGrantNotifications)
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btnDndSettings = findViewById(R.id.btnDndSettings)
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btnTestRing = findViewById(R.id.btnTestRing)
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btnSmsSettings.setOnClickListener { requestSmsAndMediaPermissions() }
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btnGrantNotifications.setOnClickListener { requestNotificationPermission() }
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btnDndSettings.setOnClickListener { openDndSettings() }
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btnTestRing.setOnClickListener {
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if (isDndGranted()) {
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startRingService(null)
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} else {
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Toast.makeText(this, R.string.toast_dnd_required, Toast.LENGTH_LONG).show()
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openDndSettings()
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}
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}
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// Refresh permission state whenever we return to the foreground (e.g. the
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// user just left the DND access settings screen).
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lifecycle.addObserver(LifecycleEventObserver { _, event ->
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if (event == Lifecycle.Event.ON_RESUME) refreshPermissionUi()
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})
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}
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// -----------------------------------------------------------------------
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// Permission checks
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// -----------------------------------------------------------------------
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private fun isDndGranted(): Boolean {
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val nm = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
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return nm.isNotificationPolicyAccessGranted
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}
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private fun isSmsGranted(): Boolean =
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ContextCompat.checkSelfPermission(this, Manifest.permission.RECEIVE_SMS) ==
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PackageManager.PERMISSION_GRANTED
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private fun isAudioGranted(): Boolean {
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val perm = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
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Manifest.permission.READ_MEDIA_AUDIO
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} else {
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Manifest.permission.READ_EXTERNAL_STORAGE
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}
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return ContextCompat.checkSelfPermission(this, perm) ==
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PackageManager.PERMISSION_GRANTED
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}
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private fun isNotificationGranted(): Boolean {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) return true
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return ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) ==
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PackageManager.PERMISSION_GRANTED
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}
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// -----------------------------------------------------------------------
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// Permission requests
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// -----------------------------------------------------------------------
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private fun requestSmsAndMediaPermissions() {
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val perms = mutableListOf<String>()
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if (!isSmsGranted()) perms.add(Manifest.permission.RECEIVE_SMS)
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU && !isAudioGranted()) {
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perms.add(Manifest.permission.READ_MEDIA_AUDIO)
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}
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if (perms.isNotEmpty()) {
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requestPermissionLauncher.launch(perms.toTypedArray())
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} else {
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Toast.makeText(this, R.string.toast_permissions_already, Toast.LENGTH_SHORT).show()
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}
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}
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private fun requestNotificationPermission() {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU && !isNotificationGranted()) {
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requestPermissionLauncher.launch(arrayOf(Manifest.permission.POST_NOTIFICATIONS))
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}
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}
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/**
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* The ONLY way the app can bypass DND: the user must manually flip the toggle
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* in the system settings screen opened here. If they haven't, the app will
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* never play a sound on a trigger.
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*/
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private fun openDndSettings() {
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openDndSettingsLauncher.launch(
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Intent(Settings.ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS)
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)
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}
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private fun startRingService(songName: String?) {
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val intent = RingService.buildIntent(this, isDndGranted(), songName)
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
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startForegroundService(intent)
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} else {
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startService(intent)
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}
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}
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// -----------------------------------------------------------------------
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// UI refresh
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// -----------------------------------------------------------------------
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private fun refreshPermissionUi() {
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val dndGranted = isDndGranted()
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tvDnd.text = if (dndGranted) {
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getString(R.string.dnd_status_granted)
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} else {
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getString(R.string.dnd_status_denied)
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}
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tvDnd.setTextColor(if (dndGranted) Color.parseColor("#4CAF50") else Color.parseColor("#F44336"))
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tvStatus.text = buildString {
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append("RECEIVE_SMS: ${if (isSmsGranted()) "granted" else "NOT granted"}\n")
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append("READ_MEDIA_AUDIO: ${if (isAudioGranted()) "granted" else "NOT granted"}\n")
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append("POST_NOTIFICATIONS: ${if (isNotificationGranted()) "granted" else "NOT granted"}")
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}
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btnDndSettings.text = if (dndGranted) {
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getString(R.string.btn_dnd_granted)
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} else {
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getString(R.string.btn_dnd_settings)
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}
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}
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}
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445
app/src/main/java/com/example/lostmyphone/RingService.kt
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445
app/src/main/java/com/example/lostmyphone/RingService.kt
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package com.example.lostmyphone
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import android.app.NotificationManager
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import android.app.Service
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import androidx.core.app.NotificationCompat
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import android.content.ContentUris
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import android.content.Context
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import android.content.Intent
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import android.media.AudioAttributes
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import android.media.AudioFocusRequest
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import android.media.AudioManager
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import android.media.MediaPlayer
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import android.net.Uri
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import android.os.Build
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import android.os.IBinder
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import android.provider.MediaStore
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import android.provider.Settings
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import android.util.Log
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import kotlinx.coroutines.CoroutineScope
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.SupervisorJob
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import kotlinx.coroutines.cancel
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import kotlinx.coroutines.delay
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import kotlinx.coroutines.launch
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/**
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* Foreground service responsible for the core "Lost My Phone" behaviour:
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*
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* 1. Verify the user has granted Do Not Disturb access
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* (NotificationManager.isNotificationPolicyAccessGranted). If not, it must
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* NOT play any sound. Instead it surfaces the settings intent and a message.
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* 2. If granted: force STREAM_MUSIC volume to max, request transient audio
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* focus with MODE_RINGTONE semantics so playback can cut through DND,
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* play the requested audio for exactly 30 seconds, then restore the
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* previous volume level and stop.
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*
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* Privacy note: no sound is ever played unless DND access has been explicitly
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* granted by the user AND a valid SMS trigger was received.
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*/
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class RingService : Service() {
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companion object {
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private const val TAG = "RingService"
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const val ACTION_RING = "com.example.lostmyphone.action.RING"
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const val ACTION_PLAY_SONG = "com.example.lostmyphone.action.PLAY_SONG"
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const val EXTRA_SONG_NAME = "extra_song_name"
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const val EXTRA_DND_GRANTED = "extra_dnd_granted"
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private const val CHANNEL_ID = "ring_channel"
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private const val NOTIFICATION_ID = 1001
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private const val RING_DURATION_MS = 30_000L
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fun buildIntent(context: Context, dndGranted: Boolean, songName: String?): Intent {
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val intent = Intent(context, RingService::class.java)
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if (songName.isNullOrBlank()) {
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intent.action = ACTION_RING
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} else {
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intent.action = ACTION_PLAY_SONG
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intent.putExtra(EXTRA_SONG_NAME, songName)
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}
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intent.putExtra(EXTRA_DND_GRANTED, dndGranted)
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return intent
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}
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}
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private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Main.immediate)
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private lateinit var audioManager: AudioManager
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private lateinit var notificationManager: NotificationManager
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private lateinit var mediaPlayer: MediaPlayer
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private var originalVolume = -1
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private var previousFocusMode = AudioManager.MODE_NORMAL
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private var hasFocus = false
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private var isRestoring = false
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private var audioFocusRequest: AudioFocusRequest? = null
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override fun onCreate() {
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super.onCreate()
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audioManager = getSystemService(Context.AUDIO_SERVICE) as AudioManager
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notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
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createNotificationChannel()
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}
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override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
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if (intent == null) {
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stopSelf()
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return START_NOT_STICKY
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}
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// ---- CRITICAL: DND permission gate --------------------------------
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// The SMS receiver already communicates whether permission was granted,
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// but we ALWAYS re-verify server-side here because it is the source of truth.
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val dndGranted = notificationManager.isNotificationPolicyAccessGranted
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if (!dndGranted) {
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Log.w(TAG, "DND access not granted. Refusing to play sound.")
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// Publish a persistent, ongoing "permission required" notification so
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// the user is clearly informed, then open the DND access settings.
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startForeground(NOTIFICATION_ID, buildDeniedNotification().build())
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showPermissionRequiredAction()
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// Keep the service alive (with the persistent notification) until the
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// user grants access and re-triggers, at which point onStartCommand
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// fires again and playback proceeds. No sound was played.
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return START_STICKY
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}
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// Explicitly granted: proceed with the ring.
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val songName = intent.getStringExtra(EXTRA_SONG_NAME)
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Log.i(TAG, "DND access granted. Ringing with song='$songName'")
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startForeground(NOTIFICATION_ID, buildRingingNotification(songName).build())
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handleRing(songName)
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return START_STICKY
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}
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// -----------------------------------------------------------------------
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// Ring logic
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// -----------------------------------------------------------------------
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private fun handleRing(songName: String?) {
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val uri: Uri? = if (songName.isNullOrBlank()) {
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// RING_NOW -> default system ringtone
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Settings.System.DEFAULT_RINGTONE_URI
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} else {
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// PLAY_SONG -> try to find a matching local track, else fallback.
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querySongUri(songName) ?: Settings.System.DEFAULT_RINGTONE_URI
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}
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if (uri == null) {
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Log.e(TAG, "No playable URI. Aborting.")
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restoreAndStop()
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return
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}
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scope.launch {
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if (!beginPlayback(uri)) {
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restoreAndStop()
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return@launch
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}
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// Ring for exactly 30 seconds.
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delay(RING_DURATION_MS)
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restoreAndStop()
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}
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}
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/**
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* Bypass-DND sequence. Ordering matters:
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* 1. Capture the current music volume so we can restore it later.
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* 2. Force the music stream to max volume.
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* 3. Put the audio manager into MODE_RINGTONE so the device treats the
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* audio with the "ringtone" semantics used by incoming calls - this is
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* what lets the sound punch through Do Not Disturb. On modern Android
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* this is reinforced by requesting focus with USAGE_NOTIFICATION_RINGTONE.
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* 4. Prepare and start playback.
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*
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* @return true if playback started successfully.
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*/
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private suspend fun beginPlayback(uri: Uri): Boolean {
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return try {
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// Step 1: save current volume.
|
||||
originalVolume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)
|
||||
|
||||
// Step 2: force max volume.
|
||||
val maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC)
|
||||
audioManager.setStreamVolume(
|
||||
AudioManager.STREAM_MUSIC,
|
||||
maxVolume,
|
||||
0 // flags = 0 so we do NOT show the system volume UI.
|
||||
)
|
||||
|
||||
// Step 3: request focus. Use USAGE_NOTIFICATION_RINGTONE so the
|
||||
// system lets it play even during DND, and set MODE_RINGTONE.
|
||||
previousFocusMode = audioManager.mode
|
||||
requestAudioFocus()
|
||||
|
||||
// Prepare the player on the main thread (MediaPlayer creation is
|
||||
// safe on main; prepare is async).
|
||||
mediaPlayer = MediaPlayer()
|
||||
mediaPlayer.setAudioAttributes(
|
||||
AudioAttributes.Builder()
|
||||
.setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE)
|
||||
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
|
||||
.build()
|
||||
)
|
||||
mediaPlayer.setDataSource(this, uri)
|
||||
mediaPlayer.prepare()
|
||||
mediaPlayer.setOnCompletionListener { /* restore handled by timer */ }
|
||||
mediaPlayer.start()
|
||||
|
||||
Log.i(
|
||||
TAG,
|
||||
"Playback started. volume=$maxVolume mode=${audioManager.mode} " +
|
||||
"dnd=${notificationManager.isNotificationPolicyAccessGranted}"
|
||||
)
|
||||
true
|
||||
} catch (e: Exception) {
|
||||
Log.e(TAG, "Failed to start playback", e)
|
||||
restoreAndStop()
|
||||
false
|
||||
}
|
||||
}
|
||||
|
||||
private fun requestAudioFocus() {
|
||||
val listener = AudioManager.OnAudioFocusChangeListener { focusChange ->
|
||||
when (focusChange) {
|
||||
AudioManager.AUDIOFOCUS_GAIN -> {
|
||||
hasFocus = true
|
||||
try {
|
||||
audioManager.mode = AudioManager.MODE_RINGTONE
|
||||
if (::mediaPlayer.isInitialized && !mediaPlayer.isPlaying) {
|
||||
mediaPlayer.start()
|
||||
}
|
||||
} catch (e: Exception) {
|
||||
Log.e(TAG, "Focus gain handling failed", e)
|
||||
}
|
||||
}
|
||||
AudioManager.AUDIOFOCUS_LOSS,
|
||||
AudioManager.AUDIOFOCUS_LOSS_TRANSIENT,
|
||||
AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK -> {
|
||||
// We only have a transient burst; don't fight for focus,
|
||||
// just restore cleanly.
|
||||
restoreAndStop()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
val attributes = AudioAttributes.Builder()
|
||||
.setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE)
|
||||
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
|
||||
.build()
|
||||
|
||||
val result: Int = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
|
||||
audioFocusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
|
||||
.setAudioAttributes(attributes)
|
||||
.setOnAudioFocusChangeListener(listener)
|
||||
.setWillPauseWhenDucked(false)
|
||||
.build()
|
||||
audioManager.requestAudioFocus(audioFocusRequest!!)
|
||||
} else {
|
||||
@Suppress("DEPRECATION")
|
||||
audioManager.requestAudioFocus(
|
||||
listener,
|
||||
AudioManager.STREAM_MUSIC,
|
||||
AudioManager.AUDIOFOCUS_GAIN_TRANSIENT
|
||||
)
|
||||
}
|
||||
|
||||
hasFocus = result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED
|
||||
if (hasFocus) {
|
||||
audioManager.mode = AudioManager.MODE_RINGTONE
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Queries MediaStore for a song whose title (or display name) contains the
|
||||
* requested name, case-insensitively.
|
||||
*/
|
||||
private fun querySongUri(songName: String): Uri? {
|
||||
val needle = songName.trim()
|
||||
if (needle.isEmpty()) return null
|
||||
|
||||
val collection = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
|
||||
MediaStore.Audio.Media.getContentUri(MediaStore.VOLUME_EXTERNAL)
|
||||
} else {
|
||||
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
|
||||
}
|
||||
|
||||
val projection = arrayOf(
|
||||
MediaStore.Audio.Media._ID,
|
||||
MediaStore.Audio.Media.TITLE,
|
||||
MediaStore.Audio.Media.DISPLAY_NAME
|
||||
)
|
||||
|
||||
val selection = "${MediaStore.Audio.Media.IS_MUSIC} != 0"
|
||||
val selectionArgs: Array<String>? = null
|
||||
val sortOrder: String? = null
|
||||
|
||||
return try {
|
||||
val cursor = contentResolver.query(
|
||||
collection,
|
||||
projection,
|
||||
selection,
|
||||
selectionArgs,
|
||||
sortOrder
|
||||
) ?: return null
|
||||
|
||||
var best: Uri? = null
|
||||
cursor.use {
|
||||
if (it.moveToFirst()) {
|
||||
do {
|
||||
val title =
|
||||
it.getString(it.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE))
|
||||
?: ""
|
||||
val display =
|
||||
it.getString(it.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME))
|
||||
?: ""
|
||||
if (title.contains(needle, ignoreCase = true) ||
|
||||
display.contains(needle, ignoreCase = true)
|
||||
) {
|
||||
val id = it.getLong(it.getColumnIndexOrThrow(MediaStore.Audio.Media._ID))
|
||||
best = ContentUris.withAppendedId(collection, id)
|
||||
break
|
||||
}
|
||||
} while (it.moveToNext())
|
||||
}
|
||||
}
|
||||
Log.i(TAG, "Query '$needle' -> ${best?.lastPathSegment ?: "not found"}")
|
||||
best
|
||||
} catch (e: Exception) {
|
||||
Log.e(TAG, "MediaStore query failed", e)
|
||||
null
|
||||
}
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// Cleanup
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
private fun restoreAndStop() {
|
||||
if (isRestoring) return
|
||||
isRestoring = true
|
||||
try {
|
||||
// Stop playback.
|
||||
if (::mediaPlayer.isInitialized) {
|
||||
try {
|
||||
mediaPlayer.stop()
|
||||
} catch (_: Exception) {
|
||||
}
|
||||
mediaPlayer.release()
|
||||
}
|
||||
|
||||
// Abandon audio focus.
|
||||
if (hasFocus) {
|
||||
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && audioFocusRequest != null) {
|
||||
audioManager.abandonAudioFocusRequest(audioFocusRequest!!)
|
||||
} else {
|
||||
@Suppress("DEPRECATION")
|
||||
audioManager.abandonAudioFocus(null)
|
||||
}
|
||||
}
|
||||
|
||||
// Restore the previous audio mode.
|
||||
if (audioManager.mode == AudioManager.MODE_RINGTONE) {
|
||||
audioManager.mode = previousFocusMode
|
||||
}
|
||||
|
||||
// Restore the previous volume.
|
||||
if (originalVolume >= 0) {
|
||||
audioManager.setStreamVolume(
|
||||
AudioManager.STREAM_MUSIC,
|
||||
originalVolume,
|
||||
0
|
||||
)
|
||||
Log.i(TAG, "Restored volume to $originalVolume")
|
||||
}
|
||||
} catch (e: Exception) {
|
||||
Log.e(TAG, "Cleanup error", e)
|
||||
}
|
||||
stopForeground(STOP_FOREGROUND_REMOVE)
|
||||
stopSelf()
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// Notifications / user messaging
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
private fun createNotificationChannel() {
|
||||
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
|
||||
val channel = NotificationChannel(
|
||||
CHANNEL_ID,
|
||||
getString(R.string.channel_name),
|
||||
NotificationManager.IMPORTANCE_HIGH
|
||||
).apply {
|
||||
description = getString(R.string.channel_description)
|
||||
setSound(null, null) // silent channel; audio is played by MediaPlayer
|
||||
enableVibration(false)
|
||||
}
|
||||
notificationManager.createNotificationChannel(channel)
|
||||
}
|
||||
}
|
||||
|
||||
private fun buildRingingNotification(songName: String?): NotificationCompat.Builder {
|
||||
val content = if (songName.isNullOrBlank()) {
|
||||
getString(R.string.notif_ringing_ringtone)
|
||||
} else {
|
||||
getString(R.string.notif_ringing_song, songName)
|
||||
}
|
||||
val openIntent = PendingIntent.getActivity(
|
||||
this, 0, Intent(this, MainActivity::class.java),
|
||||
PendingIntent.FLAG_IMMUTABLE
|
||||
)
|
||||
return NotificationCompat.Builder(this, CHANNEL_ID)
|
||||
.setSmallIcon(android.R.drawable.ic_media_play)
|
||||
.setContentTitle(getString(R.string.notif_ringing_title))
|
||||
.setContentText(content)
|
||||
.setContentIntent(openIntent)
|
||||
.setOngoing(true)
|
||||
.setCategory(NotificationCompat.CATEGORY_ALARM)
|
||||
}
|
||||
|
||||
private fun buildDeniedNotification(): NotificationCompat.Builder {
|
||||
val content = getString(R.string.dnd_permission_required)
|
||||
return NotificationCompat.Builder(this, CHANNEL_ID)
|
||||
.setSmallIcon(android.R.drawable.ic_lock_lock)
|
||||
.setContentTitle(getString(R.string.notif_permission_denied_title))
|
||||
.setContentText(content)
|
||||
.setContentIntent(buildPermissionSettingsPendingIntent())
|
||||
.setOngoing(true)
|
||||
}
|
||||
|
||||
private fun buildPermissionSettingsPendingIntent(): PendingIntent {
|
||||
val settingsIntent = Intent(Settings.ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS)
|
||||
settingsIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
|
||||
return PendingIntent.getActivity(
|
||||
this, 1, settingsIntent,
|
||||
PendingIntent.FLAG_IMMUTABLE
|
||||
)
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when DND permission is missing. We launch the system settings
|
||||
* screen so the user can grant access - the only way this app can legally
|
||||
* bypass DND.
|
||||
*/
|
||||
private fun showPermissionRequiredAction() {
|
||||
val settingsIntent = Intent(Settings.ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS)
|
||||
settingsIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
|
||||
try {
|
||||
startActivity(settingsIntent)
|
||||
} catch (e: Exception) {
|
||||
Log.e(TAG, "Could not open DND settings", e)
|
||||
}
|
||||
}
|
||||
|
||||
override fun onDestroy() {
|
||||
super.onDestroy()
|
||||
scope.cancel()
|
||||
restoreAndStop()
|
||||
}
|
||||
|
||||
override fun onBind(intent: Intent?): IBinder? = null
|
||||
}
|
||||
84
app/src/main/java/com/example/lostmyphone/SmsReceiver.kt
Normal file
84
app/src/main/java/com/example/lostmyphone/SmsReceiver.kt
Normal file
|
|
@ -0,0 +1,84 @@
|
|||
package com.example.lostmyphone
|
||||
|
||||
import android.content.BroadcastReceiver
|
||||
import android.content.Context
|
||||
import android.content.Intent
|
||||
import android.os.Build
|
||||
import android.provider.Telephony
|
||||
import android.util.Log
|
||||
import androidx.core.content.ContextCompat
|
||||
|
||||
/**
|
||||
* BroadcastReceiver that intercepts incoming SMS messages and looks for the
|
||||
* trigger commands:
|
||||
*
|
||||
* - RING_NOW -> play the default system ringtone
|
||||
* - PLAY_SONG <Name> -> play a matching local MediaStore song, else fallback
|
||||
*
|
||||
* On Android 6.0+ this receiver only fires if the user has granted the
|
||||
* RECEIVE_SMS runtime permission (which MainActivity requests on first launch).
|
||||
*/
|
||||
class SmsReceiver : BroadcastReceiver() {
|
||||
|
||||
companion object {
|
||||
private const val TAG = "SmsReceiver"
|
||||
|
||||
val TRIGGER_RING_NOW: Regex = Regex("^\\s*RING_NOW\\s*$", RegexOption.IGNORE_CASE)
|
||||
val TRIGGER_PLAY_SONG: Regex =
|
||||
Regex("^\\s*PLAY_SONG\\s+(.+?)\\s*$", RegexOption.IGNORE_CASE)
|
||||
}
|
||||
|
||||
override fun onReceive(context: Context, intent: Intent) {
|
||||
if (intent.action != Telephony.Sms.Intents.SMS_RECEIVED_ACTION) {
|
||||
return
|
||||
}
|
||||
|
||||
// We only act on a trigger and ignore others, but aborting a broadcast
|
||||
// that we did not handle would break other apps, so we do NOT call abort.
|
||||
val (body, sender) = parseMessages(intent) ?: return
|
||||
Log.i(TAG, "SMS from '$sender': '$body'")
|
||||
|
||||
when {
|
||||
TRIGGER_RING_NOW.matches(body) -> handleTrigger(context, null)
|
||||
else -> {
|
||||
TRIGGER_PLAY_SONG.find(body)?.let { match ->
|
||||
val songName = match.groupValues[1].trim()
|
||||
handleTrigger(context, songName)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Extracts the concatenated SMS body from the multi-part Telephony intent.
|
||||
*/
|
||||
private fun parseMessages(intent: Intent): Pair<String, String>? {
|
||||
val messages = Telephony.Sms.Intents.getMessagesFromIntent(intent)
|
||||
if (messages.isEmpty()) return null
|
||||
|
||||
val body = StringBuilder()
|
||||
var sender: String? = null
|
||||
for (msg in messages) {
|
||||
body.append(msg.messageBody ?: "")
|
||||
if (sender == null) sender = msg.originatingAddress
|
||||
}
|
||||
if (body.isEmpty()) return null
|
||||
return Pair(body.toString().trim(), sender ?: "unknown")
|
||||
}
|
||||
|
||||
private fun handleTrigger(context: Context, songName: String?) {
|
||||
Log.i(TAG, "Trigger matched. song='$songName'")
|
||||
|
||||
// Determine the current DND access state so the service can short-circuit
|
||||
// if needed. The service re-verifies this at runtime as the source of truth.
|
||||
val dndGranted = (context.getSystemService(Context.NOTIFICATION_SERVICE)
|
||||
as android.app.NotificationManager).isNotificationPolicyAccessGranted
|
||||
|
||||
val serviceIntent = RingService.buildIntent(context, dndGranted, songName)
|
||||
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
|
||||
ContextCompat.startForegroundService(context, serviceIntent)
|
||||
} else {
|
||||
context.startService(serviceIntent)
|
||||
}
|
||||
}
|
||||
}
|
||||
15
app/src/main/res/drawable/ic_launcher.xml
Normal file
15
app/src/main/res/drawable/ic_launcher.xml
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
<vector xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
android:width="108dp"
|
||||
android:height="108dp"
|
||||
android:viewportWidth="108"
|
||||
android:viewportHeight="108">
|
||||
<path
|
||||
android:fillColor="#202124"
|
||||
android:pathData="M0,0h108v108h-108z" />
|
||||
<path
|
||||
android:fillColor="#FFFFFF"
|
||||
android:pathData="M54,24c-12,0-22,9-22,21v10l-4,4v3h52v-3l-4-4v-10c0-12-10-21-22-21z" />
|
||||
<path
|
||||
android:fillColor="#FFFFFF"
|
||||
android:pathData="M54,84c-4,0-7-3-8-6h16c-1,3-4,6-8,6z" />
|
||||
</vector>
|
||||
95
app/src/main/res/layout/activity_main.xml
Normal file
95
app/src/main/res/layout/activity_main.xml
Normal file
|
|
@ -0,0 +1,95 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
android:fillViewport="true">
|
||||
|
||||
<LinearLayout
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:orientation="vertical"
|
||||
android:padding="20dp">
|
||||
|
||||
<TextView
|
||||
android:id="@+id/tvStatusHeader"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginBottom="8dp"
|
||||
android:text="Permission Status"
|
||||
android:textSize="20sp"
|
||||
android:textStyle="bold" />
|
||||
|
||||
<TextView
|
||||
android:id="@+id/tvStatus"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:textSize="15sp" />
|
||||
|
||||
<View
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="1dp"
|
||||
android:layout_marginTop="16dp"
|
||||
android:layout_marginBottom="16dp"
|
||||
android:background="#44000000" />
|
||||
|
||||
<TextView
|
||||
android:id="@+id/tvDndHeader"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginBottom="8dp"
|
||||
android:text="Do Not Disturb Override (Critical)"
|
||||
android:textSize="18sp"
|
||||
android:textStyle="bold" />
|
||||
|
||||
<TextView
|
||||
android:id="@+id/tvDnd"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:textSize="16sp"
|
||||
android:textStyle="bold" />
|
||||
|
||||
<TextView
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginTop="8dp"
|
||||
android:text="@string/dnd_explanation"
|
||||
android:textSize="14sp" />
|
||||
|
||||
<Button
|
||||
android:id="@+id/btnDndSettings"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginTop="16dp"
|
||||
android:text="@string/btn_dnd_settings" />
|
||||
|
||||
<Button
|
||||
android:id="@+id/btnSmsSettings"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginTop="8dp"
|
||||
android:text="@string/btn_sms_settings" />
|
||||
|
||||
<Button
|
||||
android:id="@+id/btnGrantNotifications"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginTop="8dp"
|
||||
android:text="@string/btn_notifications" />
|
||||
|
||||
<Button
|
||||
android:id="@+id/btnTestRing"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginTop="24dp"
|
||||
android:backgroundTint="#C62828"
|
||||
android:text="@string/btn_test_ring" />
|
||||
|
||||
<TextView
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_marginTop="24dp"
|
||||
android:text="Commands: send \"RING_NOW\" to this device for the default ringtone, or \"PLAY_SONG <Name>\" to play a matching local track."
|
||||
android:textSize="13sp" />
|
||||
|
||||
</LinearLayout>
|
||||
</ScrollView>
|
||||
6
app/src/main/res/values/colors.xml
Normal file
6
app/src/main/res/values/colors.xml
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<resources>
|
||||
<color name="primary">#1A73E8</color>
|
||||
<color name="primary_variant">#174EA6</color>
|
||||
<color name="white">#FFFFFF</color>
|
||||
</resources>
|
||||
32
app/src/main/res/values/strings.xml
Normal file
32
app/src/main/res/values/strings.xml
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<resources>
|
||||
<string name="app_name">Lost My Phone</string>
|
||||
|
||||
<string name="channel_name">Ring Playback</string>
|
||||
<string name="channel_description">Media playback channel for ring-alert playback</string>
|
||||
|
||||
<string name="notif_ringing_title">Lost My Phone — Ringing</string>
|
||||
<string name="notif_ringing_ringtone">Playing default ringtone for 30 seconds</string>
|
||||
<string name="notif_ringing_song">Playing "%1$s" for 30 seconds</string>
|
||||
|
||||
<string name="notif_permission_denied_title">Action Required: DND Access</string>
|
||||
<string name="dnd_permission_required">Permission Required: Please open settings and enable "Do Not Disturb Access" for "Lost My Phone" to ring your device.</string>
|
||||
|
||||
<string name="dnd_status_granted">Do Not Disturb Access: GRANTED</string>
|
||||
<string name="dnd_status_denied">Do Not Disturb Access: DENIED</string>
|
||||
|
||||
<string name="btn_dnd_settings">Open Do Not Disturb Access Settings</string>
|
||||
<string name="btn_dnd_granted">Do Not Disturb Access — Granted</string>
|
||||
<string name="btn_sms_settings">Grant SMS & Media Permissions</string>
|
||||
<string name="btn_notifications">Grant Notification Permission</string>
|
||||
<string name="btn_test_ring">Test Ring Now (30s)</string>
|
||||
|
||||
<string name="toast_dnd_checked">DND access checked. If you enabled it, the app is ready.</string>
|
||||
<string name="toast_dnd_required">Do Not Disturb Access is required before ringing.</string>
|
||||
<string name="toast_dnd_already">Do Not Disturb Access is already granted.</string>
|
||||
<string name="toast_permissions_already">All SMS/media permissions already granted.</string>
|
||||
<string name="toast_sms_required">SMS permission is required to detect ring commands.</string>
|
||||
|
||||
<string name="status_help">Status: %1$s</string>
|
||||
<string name="dnd_explanation">Enabling Do Not Disturb Access lets the app cut through DND to play the ring. It is only ever used after a valid SMS trigger or a manual test.</string>
|
||||
</resources>
|
||||
8
app/src/main/res/values/themes.xml
Normal file
8
app/src/main/res/values/themes.xml
Normal file
|
|
@ -0,0 +1,8 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<resources>
|
||||
<style name="Theme.LostMyPhone" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
|
||||
<item name="colorPrimary">@color/primary</item>
|
||||
<item name="colorPrimaryVariant">@color/primary_variant</item>
|
||||
<item name="colorOnPrimary">@color/white</item>
|
||||
</style>
|
||||
</resources>
|
||||
Loading…
Add table
Add a link
Reference in a new issue