[英]How do I correctly stop a Media Player in a CountDown Timer when the activity is Paused?
在活動暫停時,我可以在倒數計時器完成之前成功取消它。 但是,在已取消計時器的OnTick方法中實現的媒體播放器不會停止5-8秒。 當活動暫停時,在倒數計時器中禁用媒體播放器聲音的正確方法是什么?
private Button soundOn;
private Button soundOff;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_level_one);
SharedPreferences savedSoundToggle = getSharedPreferences(PREFS_SOUNDTOGGLE, 0);
final SharedPreferences.Editor soundEditor = savedSoundToggle.edit();
nSound = savedSoundToggle.getInt("SoundOnorOff", 0);
if(nSound == 1){
soundOff.setEnabled(false);
soundOff.setVisibility(View.INVISIBLE);
soundOn.setEnabled(true);
soundOn.setVisibility(View.VISIBLE);
}
else if( nSound == 0){
soundOn.setEnabled(false);
soundOn.setVisibility(View.INVISIBLE);
soundOff.setEnabled(true);
soundOff.setVisibility(View.VISIBLE);
}
}
public void OneGame(){
final MediaPlayer intro = MediaPlayer.create(getApplicationContext(), R.raw.minicycleaudio);
final MediaPlayer go = MediaPlayer.create(getApplicationContext(), R.raw.flashgoaudio);
getReadyTimer = new CountDownTimer(6000, 1000) {
public void onTick(long millisUntilFinished) {
getReadyTimeText.setText("" + millisUntilFinished / 1000);
if(soundOn.isEnabled()){
intro.start();
}
if(soundOff.isEnabled()){
if(intro.isPlaying()){
intro.pause();
}
}
}
public void onFinish() {
if(intro.isPlaying()) {
intro.stop();
intro.release();
}
if(soundOn.isEnabled()) {
go.start();
}
@Override
public void onPause() {
super.onPause();
getReadyTimer.cancel();
}
}
我幾乎100%地肯定,由於從未調用過onFinish()函數中的媒體播放器,因此在活動暫停時,倒數計時器將被取消。 為什么onTick方法中的媒體播放器繼續播放?
我弄清楚了:若要在活動停止時在CountDown計時器中取消媒體播放器,則必須將MediaPlayer聲明為靜態的,而不是最終的。
static MediaPlayer intro;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_level_one);
getReadyTimeText = (TextView) findViewById(R.id.levelonetimerText);
public void OneGame(){
intro = MediaPlayer.create(getApplicationContext(), R.raw.minicycleaudio);
}
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