java - 如何在android中以分钟和秒为单位获取音频长度

Question

int duration = mediaPlayer.getDuration(); 
textView = (TextView) findViewById(R.id.tvduration); textView.setText(duration);

Answer 1

来自 MediaPlayer :

the duration in milliseconds, if no duration is available (for example, if streaming live content), -1 is returned.

这就是为什么您将从 getDuration() 获取以毫秒为单位的持续时间。
您可以使用它来获取 MediaPlayer 的时间作为字符串:

int duration = mediaPlayer.getDuration();
String time = String.format("%02d min, %02d sec", 
    TimeUnit.MILLISECONDS.toMinutes(duration),
    TimeUnit.MILLISECONDS.toSeconds(duration) - 
    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(duration))
);

然后当你在问题中写下:

TextView textView = (TextView) findViewById(R.id.tvduration); 
textView.setText(time);