mainActivity如下:

package c.c;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.VideoView;
import android.app.Activity;
import android.content.Intent;
/**
 * Demo描述:
 * 利用系统摄像头拍摄视频,且利用VideoView控件播放视频
 */
public class MainActivity extends Activity {
	private final static int VIDEO_CAPTURE=9527;
	private Uri mVideoUri;
    private Button mCaptureButton;
    private Button mPlayButton;
    private VideoView mVideoView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        init();
    }
    private void init(){
    	mCaptureButton=(Button) findViewById(R.id.capture_Button);
    	mCaptureButton.setOnClickListener(new ButtonClickListenerImpl());
    	mPlayButton=(Button) findViewById(R.id.play_Button);
    	mPlayButton.setEnabled(false);
    	mPlayButton.setOnClickListener(new ButtonClickListenerImpl());
    	mVideoView=(VideoView) findViewById(R.id.videoView);
    }
    private class ButtonClickListenerImpl implements OnClickListener{
		public void onClick(View v) {
			if (v.getId()==R.id.capture_Button) {
				Intent intent=new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
				startActivityForResult(intent, VIDEO_CAPTURE);
			} else {
                mVideoView.setVideoURI(mVideoUri);
                mVideoView.start();
			}
		}
    	
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    	super.onActivityResult(requestCode, resultCode, data);
    	if (resultCode==RESULT_OK&&requestCode==VIDEO_CAPTURE) {
    		mVideoUri=data.getData();
    		mPlayButton.setEnabled(true);
		}
    }
   
}

main.xml如下:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/capture_Button"
        android:layout_width="150dip"
        android:layout_height="wrap_content"
        android:text="Video Capture" />

    <Button
        android:id="@+id/play_Button"
        android:layout_width="150dip"
        android:layout_height="wrap_content"
        android:text="Video Play" />

    <VideoView
        android:id="@+id/videoView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>