我编写了一个播放 20 毫秒音频剪辑（.wav 格式）的应用程序。它只是重复播放声音片段 1000 次。
但由于延迟，它播放的次数介于 978 到 984 之间。我还尝试了其他音频格式（.ogg、.mp3 等）。
我想减少延迟并获得可靠的数字。
我在下面分享我的代码：
package com.abhinav.soundlooper;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener {
Button btnStart;
TextView tvPause, tvLoop;
EditText etPause, etLoop;
long pause, loop;
private CountDownTimer timer;
MediaPlayer mp;
public Thread t;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnStart = (Button) findViewById(R.id.btnStart);
// tvLoop = (TextView) findViewById(R.id.etLoop)
etPause = (EditText) findViewById(R.id.etPause);
etLoop = (EditText) findViewById(R.id.etLoop);
btnStart.setOnClickListener(this);
mp = MediaPlayer.create(getApplicationContext(), R.raw.beepwav);
}
@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;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
finish();
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onClick(final View v) {
// TODO Auto-generated method stub
// pause = Integer.valueOf(etPause.getText().toString()) + 1 ;
// loop = 1 + Integer.valueOf(etLoop.getText().toString());
// long ti = (pause+30);
// long tt = ti*loop;
timer = new CountDownTimer(30000, 30) {
int i =0;
public void onTick(long millisUntilFinished) {
// v.playSoundEffect(android.view.SoundEffectConstants.CLICK);
mp.start();
// try {
// timer.wait(10);
// } catch (InterruptedException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
i++;
}
public void onFinish() {
// mTextField.setText("done!");
Log.i("loop", ""+i);
stopAll();
// mp.stop();
// mp.release();
}
}.start();
//
}
protected void stopAll() {
// TODO Auto-generated method stub
timer.cancel();
}
}