MediaPlayer は、電話がかかってきても一時停止しません。これを修正するために追加できるコードがある人なら誰でも。誰かが助けることができれば素晴らしいでしょう！以下の回答からの停止を追加した初心者のみが機能しますが、アクションバーの戻るボタンまたは戻るボタンでアプリのメインメニューに移動しようとすると、クラッシュします。
public class player1 extends Activity implements Runnable {
private MediaPlayer mp;
private ProgressBar progressBar;
private ImageButton pauseicon;
private final int NUM_SOUND_FILES = 3; //*****REPLACE THIS WITH THE ACTUAL NUMBER OF SOUND FILES YOU HAVE*****
private int mfile[] = new int[NUM_SOUND_FILES];
private Random rnd = new Random();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.player_1);
pauseicon = (ImageButton) findViewById(R.id.pauseicon);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
getActionBar().setDisplayHomeAsUpEnabled(true);
mfile[0] = R.raw.sound01; //****REPLACE THESE WITH THE PROPER NAMES OF YOUR SOUND FILES
mfile[1] = R.raw.sound02; //PLACE THE SOUND FILES IN THE /res/raw/ FOLDER IN YOUR PROJECT*****
mfile[2] = R.raw.sound03;
// Listeners
/**
* Play button click event
* plays a song and changes button to pause image
* pauses a song and changes button to play image
* */
try{
mp = MediaPlayer.create(player1.this, mfile[rnd.nextInt(NUM_SOUND_FILES)]);
mp.seekTo(0);
mp.start(); ;
progressBar.setVisibility(ProgressBar.VISIBLE);
progressBar.setProgress(0);
progressBar.setMax(mp.getDuration());
new Thread(this).start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
}
mp.setOnCompletionListener(new OnCompletionListener() {
public void onCompletion(MediaPlayer mp) {
pauseicon.setImageResource(R.drawable.playicon);
mp.seekTo(0);
}
});
pauseicon.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(mp.isPlaying()) {
mp.pause();
((ImageButton) v).setImageResource(R.drawable.playicon);
} else {
mp.start();
((ImageButton) v).setImageResource(R.drawable.pauseicon);
}
}
});
}
static boolean runThread = true;
public void run() {
while ( runThread ) {
int currentPosition=0;
int total = mp.getDuration();
if ( mp != null && currentPosition <= total ) {
try {
Thread.sleep(1000);
currentPosition= mp.getCurrentPosition();
} catch (InterruptedException e) {
return;
} catch (Exception e) {
return;
}
progressBar.setProgress(currentPosition);
} else
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
runThread = false;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
if (mp != null)
if(mp.isPlaying())
mp.stop();
mp.release();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onBackPressed(){
if (mp != null){
if(mp.isPlaying())
mp.stop();
mp.release();
}
//there is no reason to call super.finish(); here
//call super.onBackPressed(); and it will finish that activity for you
super.onBackPressed();
}
@Override
protected void onStop() {
super.onStop();
if (mp != null && mp.isPlaying()){
mp.pause();
}
}
}
エラー
09-12 14:52:49.755: E/AndroidRuntime(26104): FATAL EXCEPTION: main
09-12 14:52:49.755: E/AndroidRuntime(26104): java.lang.RuntimeException: Unable to stop activity {com.apps.seconds/com.apps.seconds.player1}: java.lang.IllegalStateException
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3463)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3517)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.ActivityThread.access$1200(ActivityThread.java:141)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1309)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.os.Handler.dispatchMessage(Handler.java:99)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.os.Looper.loop(Looper.java:137)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.ActivityThread.main(ActivityThread.java:5103)
09-12 14:52:49.755: E/AndroidRuntime(26104): at java.lang.reflect.Method.invokeNative(Native Method)
09-12 14:52:49.755: E/AndroidRuntime(26104): at java.lang.reflect.Method.invoke(Method.java:525)
09-12 14:52:49.755: E/AndroidRuntime(26104): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-12 14:52:49.755: E/AndroidRuntime(26104): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-12 14:52:49.755: E/AndroidRuntime(26104): at dalvik.system.NativeStart.main(Native Method)
09-12 14:52:49.755: E/AndroidRuntime(26104): Caused by: java.lang.IllegalStateException
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.media.MediaPlayer.isPlaying(Native Method)
09-12 14:52:49.755: E/AndroidRuntime(26104): at com.apps.seconds.player1.onStop(player1.java:154)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1212)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.Activity.performStop(Activity.java:5275)
09-12 14:52:49.755: E/AndroidRuntime(26104): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3458)
09-12 14:52:49.755: E/AndroidRuntime(26104): ... 11 more