播放原始文件夹中的所有mp3文件

时间:2014-01-04 03:53:29

标签: android audio

我使用一个布局和两个按钮构建一个简单的应用程序,这是我的代码..

package com.example.tessound;

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

public class MainActivity extends Activity implements OnClickListener
{

MediaPlayer player;
Button play,mute;

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

    play = (Button)findViewById(R.id.button1);
    play.setOnClickListener(this);
    mute = (Button)findViewById(R.id.button2);
    mute.setOnClickListener(this);
}

@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;
}

public void onClick(View view)
{
    if(view.getId()==R.id.button1)
    {
        playSound(1);
    }
    else if(view.getId()==R.id.button2)
    {
        playSound(2);
    }
}

public void playSound(int arg)
{
    try
    {
        if(player != null)
        {
            if (player.isPlaying()) 
            {
                player.stop();
                player.release();
            }
        }
    }
    catch(Exception e)
    {

    }

    if (arg == 1)
    {
        player = MediaPlayer.create(this, R.raw.atur);
    }
    else if (arg == 2)
    {
        player = MediaPlayer.create(this, R.raw.back);
    }

    if(player != null)
    {
        player.setLooping(false);
        player.start();
    }

    }
}

我的原始文件夹包含: atur.mp3,back.mp3,belajar.mp3,level.mp3,skip.mp3和start.mp3 ...... 当我点击按钮静音时,会播放back.mp3,但是当我点击按钮播放时,原始文件夹中的所有mp3都会被播放..有任何评论吗?

2 个答案:

答案 0 :(得分:0)

我复制了你的代码并进行了测试。在我的系统中它工作正常。我刚刚重命名歌曲和按钮ID,因为那些原始歌曲我无法得到。请看这段代码,代码是一样的,因为我刚刚复制了这段代码:

package com.mukherjee.satyaki.test;

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

public class MainActivity1 extends Activity implements OnClickListener
{

MediaPlayer player;
Button play,mute;

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

    play = (Button)findViewById(R.id.songid1);
    play.setOnClickListener(this);
    mute = (Button)findViewById(R.id.songid2);
    mute.setOnClickListener(this);
}

@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;
}

public void onClick(View view)
{
    if(view.getId()==R.id.songid1)
    {
        playSound(1);
    }
    else if(view.getId()==R.id.songid2)
    {
        playSound(2);
    }
}

public void playSound(int arg)
{
    try
    {
        if(player != null)
        {
            if (player.isPlaying()) 
            {
                player.stop();
                player.release();
            }
        }
    }
    catch(Exception e)
    {

    }

    if (arg == 1)
    {
        player = MediaPlayer.create(this, R.raw.ram1);
    }
    else if (arg == 2)
    {
        player = MediaPlayer.create(this, R.raw.ram3);
    }

    if(player != null)
    {
        player.setLooping(false);
        player.start();
    }

    }
}

您的代码很好,根据我之前的假设重新启动模拟器并擦除用户数据然后进行测试。我认为问题将通过您的代码解决。

感谢。

答案 1 :(得分:0)

我记得有类似的问题,我的代码最终看起来像这样:

if (!getmMediaPlayer().isPlaying()) {
    try {
        AssetFileDescriptor fd = getResources().openRawResourceFd(
                R.raw.snooze);
        getmMediaPlayer().setDataSource(fd.getFileDescriptor(),
                fd.getStartOffset(), fd.getLength());
        getmMediaPlayer().setAudioStreamType(
                AudioManager.STREAM_ALARM);
        getmMediaPlayer().setLooping(true);
        getmMediaPlayer().prepare();
        getmMediaPlayer().start();
    } catch (IllegalStateException e) {
        Log.e(TAG, e.toString());
    } catch (IOException e) {
        Log.e(TAG, e.toString());
    }
}

具体来说,我认为这是重要的setDataSource。

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