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我是新來的android,我需要它爲我正在處理的項目。我需要它通過點擊按鈕來播放聲音。我遵循在線教程,但我的代碼根本不播放聲音,並且在MediaPlayer錯誤(-19,0)上出現錯誤。我嘗試了很多我在這裏看到的修復程序,但似乎無法使其工作。任何幫助?下面的代碼Android MediaPlayer無法播放按鈕上的聲音點擊
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
MediaPlayer player;
@Override
protected void onCreate(Bundle savedInstanceState) {
try {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AudioManager audioManager = (AudioManager) getSystemService(MainActivity.AUDIO_SERVICE);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 20, 0);
Button buttonHello = (Button) findViewById(R.id.button1);
buttonHello.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MediaPlayer mp = Medi aPlayer.create(MainActivity.this, R.raw.button);
mp.start();
mp.setOnCompletionListener(new OnCompletion Listener() {
public void onCompletion(MediaPlayer mp) {
mp.release();
};
});
}
});
} catch (Exception e) {
System.out.println("Error!");
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
何時出現錯誤?在'create()'或'start'上?異常中是否有任何相關的消息/跟蹤? – fiddler 2013-05-06 08:23:12
(順便說一下,你應該在啓動播放器之前設置監聽器) – fiddler 2013-05-06 08:23:48
將文件放到mediaplayer上的位置? – Gunaseelan 2013-05-06 08:29:09