java.io.IOException: Prepare failed.: status=0x1异常解决方法

在参考例子做视频播放的时候出现如下异常：

 error (1, -2147483648)
java.io.IOException: Prepare failed.: status=0x1
     at android.media.MediaPlayer.prepare(Native Method)
     at com.android.MainActivity.onClick(MainActivity.java:56)
     at android.view.View.performClick(View.java:2486)
     at android.view.View$PerformClick.run(View.java:9122)
     at android.os.Handler.handleCallback(Handler.java:587)
     at android.os.Handler.dispatchMessage(Handler.java:92)
     at android.os.Looper.loop(Looper.java:130)
     at android.app.ActivityThread.main(ActivityThread.java:3694)
     at java.lang.reflect.Method.invokeNative(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:507)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
     at dalvik.system.NativeStart.main(Native Method)
 setDataSource called in state 8

源码如下：

package com.mediaplayer_video;

import java.io.File;
import java.io.FileInputStream;

import com.android.R;

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

public class MainActivity extends Activity implements OnClickListener,
		SurfaceHolder.Callback {
	/** Called when the activity is first created. */
	private Button buttonStart;
	private Button buttonStop;
	private SurfaceHolder surfaceHolder;
	private MediaPlayer mediaPlayer;
	private SurfaceView surfaceView;
	private boolean isPause = false;
	private String strPath = "/sdcard/aa.3gp";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		buttonStart = (Button) findViewById(R.id.buttonStart);
		buttonStart.setOnClickListener(this);
		buttonStop = (Button) findViewById(R.id.buttonStop);
		buttonStop.setOnClickListener(this);

		surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
		surfaceHolder = surfaceView.getHolder();
		surfaceHolder.addCallback(this);
		surfaceHolder.setFixedSize(176, 144);
		surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
		mediaPlayer = new MediaPlayer();
	}

	@Override
	public void onClick(View v) {
		if (v == buttonStart) {
			isPause = false;
			if (mediaPlayer.isPlaying()) {
				mediaPlayer.reset();
			}
			mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
			mediaPlayer.setDisplay(surfaceHolder);

			try {

				mediaPlayer.setDataSource(strPath);
								mediaPlayer.prepare();
			} catch (Exception e) {
				e.printStackTrace();
			}
			mediaPlayer.start();
		} else if (v == buttonStop) {
			if (isPause == false) {
				mediaPlayer.pause();
				isPause = true;
				System.out.println("mediaPlayer pause!");
			} else {
				mediaPlayer.start();
				isPause = false;
			}
		}
	}

	@Override
	public void surfaceCreated(SurfaceHolder holder) {
		// TODO Auto-generated method stub

	}

	@Override
	public void surfaceChanged(SurfaceHolder holder, int format, int width,
			int height) {
		// TODO Auto-generated method stub

	}

	@Override
	public void surfaceDestroyed(SurfaceHolder holder) {
		// TODO Auto-generated method stub

	}
}

xml文件如下：

	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
			android:layout_height="wrap_content" android:text="@string/hello" />
			android:layout_width="fill_parent" android:layout_height="400dip">
	
			android:layout_height="wrap_content">
					android:layout_height="wrap_content" android:text="播放">
		
					android:layout_height="wrap_content" android:text="停止">
		
	

查了查资料和网上的解决办法如下:
mp.setDataSource(PATH_TO_FILE);
mp.prepare();
这个地方修改如下：
File file = new File(strPath);
FileInputStream fis = new FileInputStream(file);
mediaPlayer.setDataSource(fis.getFD());
mp.prepare();
或者
把mediaPlayer.prepare;改成
mediaPlayer.prepareAsync();
这种情况会报个prepare called in state 8错误