Initial commit

app/build.gradle

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+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 30
+
+    defaultConfig {
+        applicationId "com.urbandroid.recordforeground"
+        minSdkVersion 26
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.1'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/urbandroid/recordforeground/ExampleInstrumentedTest.kt

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+package com.urbandroid.recordforeground
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.urbandroid.recordforeground", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.urbandroid.recordforeground">
+
+    <uses-feature
+        android:name="android.hardware.microphone"
+        android:required="false"/>
+
+    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <service
+            android:foregroundServiceType="microphone"
+            android:name=".RecordingService"/>
+    </application>
+
+</manifest>

app/src/main/java/com/urbandroid/recordforeground/MainActivity.kt

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+package com.urbandroid.recordforeground
+
+import android.Manifest
+import android.app.AlarmManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.Menu
+import android.view.MenuItem
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import kotlinx.android.synthetic.main.activity_main.*
+import java.util.*
+import java.util.concurrent.TimeUnit
+
+const val TAG : String = "RecordForeground"
+
+const val NOTIFICATION_CHANNEL_FOREGROUND = "foreground"
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setSupportActionBar(findViewById(R.id.toolbar))
+
+        startLater.setOnClickListener {
+            val time = System.currentTimeMillis() + TimeUnit.MINUTES.toMillis(10)
+            Log.i(TAG, "Scheduling start ${Date(time)}")
+            val am = getSystemService(Context.ALARM_SERVICE) as AlarmManager
+            am.setExactAndAllowWhileIdle(AlarmManager.RTC, time, PendingIntent.getForegroundService(this, 0, Intent(this, RecordingService::class.java), PendingIntent.FLAG_UPDATE_CURRENT))
+
+            Toast.makeText(this, "Foreground service will start in a minute", Toast.LENGTH_LONG).show()
+            finish()
+        }
+
+        startNow.setOnClickListener {
+            startForegroundService(Intent(this, RecordingService::class.java))
+        }
+
+        requestPermissions(arrayOf(Manifest.permission.RECORD_AUDIO), 0)
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        menuInflater.inflate(R.menu.menu_main, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_settings -> true
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+}

app/src/main/java/com/urbandroid/recordforeground/RecordingService.kt

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+package com.urbandroid.recordforeground
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.media.AudioFormat
+import android.media.AudioRecord
+import android.media.MediaRecorder
+import android.net.Uri
+import android.os.Build
+import android.os.IBinder
+import android.util.Log
+import androidx.core.app.NotificationCompat
+import androidx.core.content.ContextCompat
+
+class RecordingService : Service() {
+
+    override fun onBind(p0: Intent?): IBinder? {
+        return null
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+
+        Log.i(TAG, "Foreground service created")
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+
+            val channelName = "Foreground"
+            val importance = NotificationManager.IMPORTANCE_LOW
+            val notificationChannel = NotificationChannel(NOTIFICATION_CHANNEL_FOREGROUND, channelName, importance)
+            notificationChannel.setShowBadge(false)
+            notificationManager.createNotificationChannel(notificationChannel);
+        }
+
+        val i = Intent(this, MainActivity::class.java)
+        i.flags = Intent.FLAG_ACTIVITY_NEW_TASK
+        val pi = PendingIntent.getActivity(this, 4242, i, PendingIntent.FLAG_UPDATE_CURRENT)
+
+        val context = this
+
+        var intent = Intent()
+
+        if (Build.VERSION.SDK_INT >= 26) {
+            intent = Intent(android.provider.Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS)
+            intent.putExtra(android.provider.Settings.EXTRA_CHANNEL_ID, NOTIFICATION_CHANNEL_FOREGROUND)
+            intent.putExtra(android.provider.Settings.EXTRA_APP_PACKAGE, context.packageName)
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        } else if (Build.VERSION.SDK_INT >= 23) {
+            intent.setClassName("com.android.settings", "com.android.settings.Settings\$AppNotificationSettingsActivity")
+            intent.putExtra("app_package", context.packageName)
+            intent.putExtra("app_uid", context.applicationInfo.uid)
+
+            if (Build.VERSION.SDK_INT >= 26) {
+                intent.putExtra(android.provider.Settings.EXTRA_CHANNEL_ID, NOTIFICATION_CHANNEL_FOREGROUND)
+            }
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+
+            intent.putExtra("android.provider.extra.APP_PACKAGE", context.packageName)
+        } else if (Build.VERSION.SDK_INT > 16) {
+            try {
+                intent = Intent()
+                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                intent.action = android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS
+                val uri = Uri.fromParts("package", context.packageName, null)
+                intent.data = uri
+            } catch (e: Exception) {
+                Log.e(TAG, "Error", e)
+            }
+
+        }
+
+        val notificationBuilder = NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_FOREGROUND)
+            .setChannelId(NOTIFICATION_CHANNEL_FOREGROUND)
+            .setColor(ContextCompat.getColor(applicationContext, R.color.colorAccent))
+            .setContentIntent(pi)
+            .setShowWhen(false)
+            .setContentText("Running")
+
+        startForeground(2342, notificationBuilder.build())
+
+        Log.i(TAG, "Foreground service started")
+
+        val minBufferSize = AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT)
+
+        val recorder = AudioRecord(
+            MediaRecorder.AudioSource.MIC,
+            44100,
+            AudioFormat.CHANNEL_IN_MONO,
+            AudioFormat.ENCODING_PCM_16BIT,
+            minBufferSize)
+
+        if (recorder.state == AudioRecord.STATE_UNINITIALIZED) {
+            // this condition is true even this is called from a process with an active foreground service
+            Log.i(TAG, "Recorder uninitialized FAILED")
+        } else {
+            Log.i(TAG, "Recorder initialized SUCCESS")
+        }
+
+        recorder.release()
+        stopSelf()
+    }
+}

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>