错误播放声音上的一个按钮点击 [英] Error in playing the sound on a button click

问题描述

我已经加了两个ImageButton的到我的活动，并在点击每一个应该发挥不同的声音。
 但是，当我点击任何按钮的声音没有得到发挥和日志显示错误。

I have added two imageButton to my activity and on Clicking each one should play different sounds. But when I click on any Button the sound doesn't get play and the log shows error.

logcat的错误

09-30 15:19:07.436: D/dalvikvm(477): GC_EXTERNAL_ALLOC freed 629 objects / 50520 bytes in 180ms
09-30 15:19:10.226: E/MediaPlayer(477): start called in state 1
09-30 15:19:15.276: E/MediaPlayer(477): start called in state 1

下面是一块code的，我写的，

Here is the piece of code which I wrote,

import android.media.MediaPlayer;

public class MainActivity extends Activity {


MediaPlayer mp;
ImageButton iV1,iV2;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    iV1 = (ImageButton)findViewById(R.id.iV1);
    iV2 = (ImageButton)findViewById(R.id.iV2);
    mp = MediaPlayer.create(this, R.raw.bud);
    mp = MediaPlayer.create(this, R.raw.classic);

iV1.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View arg0) {
        mp = new MediaPlayer();
        mp.prepare();

        mp.start();

    }});

iV2.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View arg0) {

        mp = new MediaPlayer(); 
        mp.prepare();
        mp.start();

    }});

    }
}

请帮我在这。任何帮助将AP preciated。我是新来这个环境中的Andr​​oid。

Please help me on this. Any help will be appreciated. I am New to this environment of Android.

先谢谢了。

推荐答案

这是一个状态机的问题，因为日志清清楚楚地写着：

This is a state machine issue, as the log clearly says :

09-30 15:19:10.226: E/MediaPlayer(477): start called in state 1

参见：
的http://developer.android.com/reference/android/media/MediaPlayer.html#StateDiagram

如，我不明白，你在哪里调用

e.g., I dont see, where you are calling

MediaPlayer.setDataSource();
MediaPlayer.Prepare() 

这篇关于错误播放声音上的一个按钮点击的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！