屏幕转换保存状态

public class Video extends Activity {

	public static final String TAG = "Video";
	private VideoView videoObject;
	private String videoLocation;
	private int videoPosition;

	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // create view
        setContentView(R.layout.main);

    	// initialize video object
        videoObject = (VideoView) findViewById(R.id.video);

        // attempt to get data from before device configuration change
        Bundle returnData = (Bundle) getLastNonConfigurationInstance();

        if (returnData == null) {

        	// first startup
        	Log.d(TAG, "Player started for 1st time");

	        // set video path
	        videoLocation = "/sdcard/DCIM/Camera/video-2010-01-10-15-21-17.3gp";
	        videoObject.setVideoPath(videoLocation);

	        // play video
	        videoObject.start();

        } else {
        	// restart after device config change
        	Log.d(TAG, "Player re-started after device configuration change");

        	// fetch data from bundle
        	videoLocation = returnData.getString("LOCATION");
        	videoPosition = returnData.getInt("POSITION");
    		Log.d(TAG, "Video location: " + videoLocation);
    		Log.d(TAG, "Video position: " + videoPosition);

    		// apply properties to new object
	        videoObject.setVideoPath(videoLocation);
	        videoObject.seekTo(videoPosition);

	        // play video
        	videoObject.start();
        }
    }

	@Override
	public Object onRetainNonConfigurationInstance() {
		// Device configuration changed
		// Save current video playback state
		Log.d(TAG, "Saving video playback state");
		videoPosition = videoObject.getCurrentPosition();
		Log.d(TAG, "Video location: " + videoLocation);
		Log.d(TAG, "Video position: " + videoPosition);

		// Build bundle to save data for return
		Bundle data = new Bundle();
		data.putString("LOCATION", videoLocation);
		data.putInt("POSITION", videoPosition);
		return data;
	}

}