android:音频播放

package com.example.media;

import android.graphics.Color;
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 {
	private MediaPlayer mediaPlayer;
	private Button btn;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		btn=(Button)findViewById(R.id.btn);
		btn.setOnClickListener(new OnClickListener()
		{
			public void onClick(View view)
			{
				try
				{
					playAudio();
					view.setBackgroundColor(Color.RED);
				}
				catch(Exception e)
				{
					e.printStackTrace();
				}
			}
		});
	}

	@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;
	}
	private void playAudio() throws Exception
	{
		mediaPlayer=MediaPlayer.create(this,R.raw.ms);
		mediaPlayer.start();
	}
}