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Added support for Audio Focus #37

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c09791e
Added AudioFocusPlayer library
benivan Dec 30, 2020
a6df7ac
Update README.md
benivan Aug 8, 2025
6a5a04e
Merge pull request #1 from benivan/benivan-patch-1
benivan Aug 8, 2025
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4 changes: 1 addition & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -153,9 +153,7 @@ I welcome and encourage all pull requests. It usually will take me within 24-48
[Pawan Kumar](https://github.com/iampawan) ([@imthepk](https://www.twitter.com/imthepk)) ([Youtube](https://www.youtube.com/c/MTechViral))
([Insta](https://www.instagram.com/codepur_ka_superhero))

> If you found this project helpful or you learned something from the source code and want to thank me, consider buying me a cup of :coffee:
>
> * [PayPal](https://www.paypal.me/imthepk/)


# License

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3 changes: 2 additions & 1 deletion android/build.gradle
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Expand Up @@ -34,6 +34,7 @@ android {
}

dependencies {
implementation 'androidx.appcompat:appcompat:1.0.0'
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.avirias.audiofocus:audiofocus:1.1.1'
}
165 changes: 75 additions & 90 deletions android/src/main/java/com/mtechviral/musicfinder/MusicFinderPlugin.java
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Expand Up @@ -7,27 +7,29 @@
import android.content.Intent;
import android.content.pm.PackageManager;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.Handler;
import android.os.Process;
import android.util.Log;

import com.avirias.audiofocus.AudioFocusPlayer;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
import io.flutter.plugin.common.MethodChannel.Result;
import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.PluginRegistry;
import io.flutter.plugin.common.PluginRegistry.Registrar;
import kotlin.Unit;
import kotlin.jvm.functions.Function1;
import kotlin.jvm.functions.Function3;

/**
* MusicFinderPlugin
Expand All @@ -48,7 +50,8 @@ public class MusicFinderPlugin implements MethodCallHandler, PluginRegistry.Requ

final Handler handler = new Handler();

MediaPlayer mediaPlayer;
AudioFocusPlayer audioFocusPlayer;


/**
* Plugin registration.
Expand All @@ -73,57 +76,57 @@ private MusicFinderPlugin(Activity activity, MethodChannel channel) {

@Override
public void onMethodCall(MethodCall call, Result result) {
if (call.method.equals("getPlatformVersion")) {
result.success("Android " + android.os.Build.VERSION.RELEASE);
} else if (call.method.equals("getSongs")) {
pendingResult = result;
if (!(call.arguments instanceof Map)) {
throw new IllegalArgumentException("Plugin not passing a map as parameter: " + call.arguments);
}
arguments = (Map<String, Object>) call.arguments;
boolean handlePermission = (boolean) arguments.get("handlePermissions");
this.executeAfterPermissionGranted = (boolean) arguments.get("executeAfterPermissionGranted");
checkPermission(handlePermission);
// result.success(getData());

} else if (call.method.equals("play")) {
String url = ((HashMap) call.arguments()).get("url").toString();
Boolean resPlay = play(url);
result.success(1);
} else if (call.method.equals("pause")) {
pause();
result.success(1);
} else if (call.method.equals("stop")) {
stop();
result.success(1);
} else if (call.method.equals("seek")) {
double position = call.arguments();
seek(position);
result.success(1);
} else if (call.method.equals("mute")) {
Boolean muted = call.arguments();
mute(muted);
result.success(1);
} else {
result.notImplemented();
switch (call.method) {
case "getPlatformVersion":
result.success("Android " + Build.VERSION.RELEASE);
break;
case "getSongs":
pendingResult = result;
if (!(call.arguments instanceof Map)) {
throw new IllegalArgumentException("Plugin not passing a map as parameter: " + call.arguments);
}
arguments = (Map<String, Object>) call.arguments;
boolean handlePermission = (boolean) arguments.get("handlePermissions");
this.executeAfterPermissionGranted = (boolean) arguments.get("executeAfterPermissionGranted");
checkPermission(handlePermission);
// result.success(getData());

break;
case "play":
String url = ((HashMap) call.arguments()).get("url").toString();
Boolean resPlay = play(url);
result.success(1);
break;
case "pause":
pause();
result.success(1);
break;
case "stop":
stop();
result.success(1);
break;
case "seek":
double position = call.arguments();
seek(position);
result.success(1);
break;
case "mute":
Boolean muted = call.arguments();
mute(muted);
result.success(1);
break;
default:
result.notImplemented();
break;
}
}

private void checkPermission(boolean handlePermission) {
if (checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
if (shouldShowRequestPermissionRationale(activity, Manifest.permission.READ_EXTERNAL_STORAGE)) {
// TODO: user should be explained why the app needs the permission
if (handlePermission) {
requestPermissions();
} else {
setNoPermissionsError();
}
if (checkSelfPermission(activity) != PackageManager.PERMISSION_GRANTED) {
if (handlePermission) {
requestPermissions();
} else {
if (handlePermission) {
requestPermissions();
} else {
setNoPermissionsError();
}
setNoPermissionsError();
}

} else {
Expand Down Expand Up @@ -172,11 +175,11 @@ private boolean shouldShowRequestPermissionRationale(Activity activity, String p
return false;
}

private int checkSelfPermission(Context context, String permission) {
if (permission == null) {
private int checkSelfPermission(Context context) {
if (Manifest.permission.READ_EXTERNAL_STORAGE == null) {
throw new IllegalArgumentException("permission is null");
}
return context.checkPermission(permission, android.os.Process.myPid(), Process.myUid());
return context.checkPermission(Manifest.permission.READ_EXTERNAL_STORAGE, android.os.Process.myPid(), Process.myUid());
}

@Override
Expand Down Expand Up @@ -220,64 +223,46 @@ private void mute(Boolean muted) {
}

private void seek(double position) {
mediaPlayer.seekTo((int) (position * 1000));
audioFocusPlayer.seekTo((int) (position * 1000));
}

private void stop() {
handler.removeCallbacks(sendData);
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer = null;
if (audioFocusPlayer != null) {
audioFocusPlayer.stop();
audioFocusPlayer.destroy();
}
}

private void pause() {
mediaPlayer.pause();
audioFocusPlayer.pause();
handler.removeCallbacks(sendData);
}

private Boolean play(String url) {
if (mediaPlayer == null) {
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mediaPlayer.setDataSource(url);
} catch (IOException e) {
e.printStackTrace();
Log.d("AUDIO", "invalid DataSource");
}

mediaPlayer.prepareAsync();
if (audioFocusPlayer == null) {
audioFocusPlayer = new AudioFocusPlayer(activity);
audioFocusPlayer.setDataSource(Uri.fromFile(new File(url)));
} else {
channel.invokeMethod("audio.onDuration", mediaPlayer.getDuration());
channel.invokeMethod("audio.onDuration", audioFocusPlayer.getDuration());

mediaPlayer.start();
audioFocusPlayer.play();
channel.invokeMethod("audio.onStart", true);
}

mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
channel.invokeMethod("audio.onDuration", mediaPlayer.getDuration());

mediaPlayer.start();
channel.invokeMethod("audio.onStart", true);
}
});

mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
audioFocusPlayer.onComplete(new Function1<AudioFocusPlayer, Unit>() {
@Override
public void onCompletion(MediaPlayer mp) {
public Unit invoke(AudioFocusPlayer audioFocusPlayer) {
stop();
channel.invokeMethod("audio.onComplete", true);
return Unit.INSTANCE;
}
});

mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
audioFocusPlayer.onError(new Function3<AudioFocusPlayer, Integer, Integer, Boolean>() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
channel.invokeMethod("audio.onError", String.format("{\"what\":%d,\"extra\":%d}", what, extra));
public Boolean invoke(AudioFocusPlayer audioFocusPlayer, Integer integer, Integer integer2) {
channel.invokeMethod("audio.onError", String.format("{\"what\":%d,\"extra\":%d}", integer, integer2));
return true;
}
});
Expand All @@ -290,10 +275,10 @@ public boolean onError(MediaPlayer mp, int what, int extra) {
private final Runnable sendData = new Runnable() {
public void run() {
try {
if (!mediaPlayer.isPlaying()) {
if (!audioFocusPlayer.isPlaying()) {
handler.removeCallbacks(sendData);
}
int time = mediaPlayer.getCurrentPosition();
int time = audioFocusPlayer.getCurrentPosition();
channel.invokeMethod("audio.onCurrentPosition", time);

handler.postDelayed(this, 200);
Expand Down