我使用startActivityForResult从listview中获取音乐文件的路径,然后使用MediaPlayer.setDataSource(STRING);
为MediaPlayer设置该字符串第一次使用按钮播放歌曲时,它播放正常,如果我在播放歌曲时单击按钮它将重置并再次播放。
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.reset();
}
但是,如果点击按钮播放完成,它将无法再次播放。
startActivityForResult
Intent i = new Intent(MainActivity.this, Activityone.class);
startActivityForResult(i, 0);
mMediaPlayer.reset();
在Listview中:
music_column_index = musiccursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
String filename = musiccursor.getString(music_column_index);
Intent person = new Intent();
Bundle backpack = new Bundle();
backpack.putString("arnswer", filename);
person.putExtras(backpack);
setResult(RESULT_OK, person);
finish();
onActivityResult:
if (resultCode == RESULT_OK){
if(requestCode == 0) {
// handling code of startActivityForResult of first button
Bundle basket = data.getExtras();
s = basket.getString("arnswer");
}
和按钮启动MediaPlayer:
public void pbutton1(View view) {
try {
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.reset();
}
mMediaPlayer.setDataSource(s); //using string here
mMediaPlayer.prepare();
mMediaPlayer.start();
} catch (Exception e) {
}
LogCat:
答案 0 :(得分:1)
我认为您需要mMediaPlayer.seekTo(0)
才能重播,因为它已经完成了。
编辑:
在Started
< - >之间查看图表 PlaybackCompleted
似乎只是一个动作才能重新启动播放器......你不需要prepare
你有:{...
我理解为什么你想要prepare
,所以我建议OnCompletetionListener
到mMediaPlayer.stop()
,以便转移到Stopped
状态并做好准备下一个prepare()
!
答案 1 :(得分:0)
此代码完美无缺。我希望能帮到你。
public class PianoActivity extends Activity {
private MediaPlayer mediaPlayer = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_piano);
setupUI();
}
@Override
protected void onPause() {
super.onPause();
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
}
}
private void setupUI() {
findViewById(R.id.doo).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
managerOfSound();
}
});
}
private void managerOfSound() {
mediaPlayer = MediaPlayer.create(this, R.raw.doo);
if (!mediaPlayer.isPlaying()) {
mediaPlayer.start();
} else {
mediaPlayer.stop();
}
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mp.reset();
mp.release();
}
});
}
}