我是 android 新手,我正在从事的项目需要它。我需要它通过单击按钮来播放声音。我按照在线教程进行操作,但我的代码根本不播放声音,并且在 MediaPlayer Error(-19,0) 上出现错误。我已经尝试了很多我在这里看到的修复,但我似乎无法让它工作。有什么帮助吗?这是代码
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;
}
}