App not starting background music of my streaming radio
I have developed a online streaming radio android app. My app is working fine on all stations but there is a problem with the background music. When I minimize my app or mobile screen lock is on or try to go back my app home then background music goes off There is no error message.
I have a class that manages the background music
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class Station extends AppCompatActivity {
Button b_play;
MediaPlayer mediaPlayer;
Boolean prepared = false;
Boolean started = false;
private Button btn;
private Boolean playPause;
private boolean initialStage = true;
Toolbar mtoolbar;
ImageView flag;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_station);
mtoolbar = (Toolbar) findViewById(R.id.toolbar1);
flag = (ImageView) findViewById(R.id.imageView2);
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
mtoolbar.setTitle(bundle.getString("Station"));
if (mtoolbar.getTitle().toString().equalsIgnoreCase("Gujrat")) {
flag.setImageDrawable(ContextCompat.getDrawable(Station.this,
R.drawable.favorites1));
String stream = "http://162.244.80.118:4900/;stream.mp3";
btn = (Button) findViewById(R.id.btn);
btn.setEnabled(false);
btn.setTag("LOADING");
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setLooping(true);
new PlayerTask().execute(stream);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view){
if(started){
started = false;
mediaPlayer.pause();
btn.setText("PLAY");
}else{
started = true;
mediaPlayer.start();
btn.setText("PAUSE");
}
}
});
} else if (mtoolbar.getTitle().toString().equalsIgnoreCase("Lahore")) {
flag.setImageDrawable(ContextCompat.getDrawable(Station.this,
R.drawable.station));
String stream = "http://162.244.80.118:3058/;stream.mp3";
btn = (Button) findViewById(R.id.btn);
btn.setEnabled(false);
btn.setTag("LOADING");
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
new PlayerTask().execute(stream);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view){
if(started){
started = false;
mediaPlayer.pause();
btn.setText("PLAY");
}else{
started = true;
mediaPlayer.start();
btn.setText("PAUSE");
}
}
});
}
}
}
private class PlayerTask extends AsyncTask<String, Void, Boolean> {
@Override
protected Boolean doInBackground(String... strings) {
Boolean prepared = false;
try {
mediaPlayer.setDataSource(strings[0]);
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mediaPlayer) {
initialStage = true;
playPause = false;
btn.setText("Launch Streaming");
mediaPlayer.stop();
mediaPlayer.reset();
}
});
mediaPlayer.prepare();
prepared = true;
} catch (Exception e) {
Log.e("MyAudioStreamingApp", e.getMessage());
prepared = false;
}
return prepared;
}
@Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
btn.setEnabled(true);
btn.setTag("PLAY");
}
}
@Override
protected void onPause(){
super.onPause();
if(started){
mediaPlayer.pause();
}
}
@Override
protected void onResume() {
super.onResume();
if (started){
mediaPlayer.start();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if(prepared){
mediaPlayer.release();
}
}
}
My xml file is
<?xml version="1.0" encoding="utf-8"?>
RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.ukhyips.httpwww.ayanradio.Station">
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/toolbar1"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:background="@color/colorPrimary"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
<Button
android:id="@+id/btn"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:text="PLAY"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="14dp" />
/RelativeLayout>
Here is my manifest file code
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission-sdk-23 android:name="android.permission.ACCESS_NETWORK_STATE"/>
<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>
<activity android:name=".Station"></activity>
<service android:enabled="true" android:name="Station" />
</application>
当您最小化我的应用程序或移动屏幕锁定时，背景音乐会关闭，因为您的应用程序转到onPause（）状态，请参阅活动生命周期（https://developer.android.com/guide/components/activities/activity-lifecycle .html），所以如果你想在后台播放你的音乐，那么使用Service（https://developer.android.com/guide/components/services.html），什么服务是让你的应用程序在后台运行，并执行任务背景。
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