如何播放和停止MP3文件在一个Android应用程序 [英] How to play and stop an mp3 file in an android app

问题描述

我已经创建了Eclipse的一个应用程序来播放和停止MP3文件。一切的一切都正常，只是，当我播放的音频文件，并阻止它，我想重播，剧中BTN不麦汁！我想知道是否有人能帮助我吗？提前致谢。 这里谈到的code：

 包ir.polyglotcenter.childrenmostfrequentwords;

进口android.app.Activity;
进口android.media.MediaPlayer;
进口android.os.Bundle;
进口android.view.View;
进口android.view.View.OnClickListener;
进口android.widget.Button;

公共类主要扩展活动{

/ **第一次创建活动时调用。 * /
@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;
    //相关的媒体播放器
    最后的MediaPlayer myMediaPlayer = MediaPlayer.create（Main.this，R.raw.audio）;
    //按钮相关的播放BTN
    按钮myButtonOne =（按钮）findViewById（R.id.btn_audio）;
    myButtonOne.setOnClickListener（新OnClickListener（）{

        @覆盖
        公共无效的onClick（视图v）{
            myMediaPlayer.start（）;

        }
    }）;

    //按钮与停止BTN
    按钮myButtonTwo =（按钮）findViewById（R.id.btn_stop）;
    myButtonTwo.setOnClickListener（新OnClickListener（）{

        @覆盖
        公共无效的onClick（视图v）{
            myMediaPlayer.stop（）;

        }
    }）;

}
}
 

解决方案

如果你想启动按钮/停止发声点击然后用 MediaPlayer.start（）和 MediaPlayer.pause（）暂停正在播放的声音，开始按钮点击重新开始。并覆盖活动的onPause 终于停下来，免费的MediaPlayer。作出改变你的code：

的onStop按钮点击：

  myButtonTwo.setOnClickListener（新OnClickListener（）{

        @覆盖
        公共无效的onClick（视图v）{

            myMediaPlayer.pause（）; //＆GT;＆GT;暂停当前的声音
            myMediaPlayer.seekTo（0）; //＆GT;＆GT;寻求再次启动它

        }
    }）;
 

和覆盖的onPause活动的方式：

  @覆盖
   保护无效的onPause {
      super.onPause（）;
       myMediaPlayer.stop（）; //＆GT;＆GT;＆GT;停止myMediaPlayer
       myMediaPlayer.release（）; //＆GT;＆GT;＆GT;免费myMediaPlayer
     }
 

I have created an app in eclipse to play and stop an mp3 file. Everything is just fine except that when I play the audio file and stop it and I want to replay it, the play btn does not wort! I was wondering if anybody can help me? Thanks in advance. Here comes the code:

package ir.polyglotcenter.childrenmostfrequentwords;

import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Main extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    //Related to the media player
    final MediaPlayer myMediaPlayer = MediaPlayer.create(Main.this, R.raw.audio);
    //Button related to play btn
    Button myButtonOne = (Button) findViewById(R.id.btn_audio);
    myButtonOne.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            myMediaPlayer.start();

        }
    });

    //Button related to stop btn
    Button myButtonTwo = (Button) findViewById(R.id.btn_stop);
    myButtonTwo.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            myMediaPlayer.stop();

        }
    });

}
}

解决方案

if you want to start /stop sound on Button Click then use MediaPlayer.start() and MediaPlayer.pause() to pause currently playing sound which start again on start button click . and override Activity onPause to finally stop and free MediaPlayer. make changes in your code as :

onStop Button Click :

myButtonTwo.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            myMediaPlayer.pause();  //>>pause current sound
            myMediaPlayer.seekTo(0); //>> seek to start it again 

        }
    });

and override onPause method of Activity :

  @Override
   protected void onPause{
      super.onPause();
       myMediaPlayer.stop();  //>>> stop myMediaPlayer
       myMediaPlayer.release(); //>>> free myMediaPlayer
     }

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