Android ViewFlipper 的使用

运行效果:

package com.iaiai;

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ViewFlipper;

/**
 * 
 * <p>
 * Title: MainActivity.java
 * </p>
 * <p>
 * E-Mail: [e-mail]
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-10-24
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class MainActivity extends Activity {

	private ViewFlipper viewFlipper;
	private GestureDetector gestureDetector;
	private Animation slideLeftIn;  
    private Animation slideLeftOut;  
    private Animation slideRightIn;  
    private Animation slideRightOut;

	private class GestureDetectorListener extends SimpleOnGestureListener {
		private static final int SWIPE_MIN_DISTANCE = 120;
		private static final int SWIPE_MAX_OFF_PATH = 250;
		private static final int SWIPE_THRESHOLD_VELOCITY = 200;
		
		@Override
		public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
				float velocityY) {
			try {
				if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
					return false;
				if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
						&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
					viewFlipper.setInAnimation(slideLeftIn);  
                    viewFlipper.setOutAnimation(slideLeftOut);
					viewFlipper.showNext();
				} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
						&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
					viewFlipper.setInAnimation(slideRightIn);  
                    viewFlipper.setOutAnimation(slideRightOut);
					viewFlipper.showPrevious();
				}
			} catch (Exception e) {
				// nothing
			}
			return false;
		}
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		slideLeftIn = AnimationUtils.loadAnimation(this, R.anim.slide_left_in);
        slideLeftOut = AnimationUtils.loadAnimation(this, R.anim.slide_left_out);
        slideRightIn = AnimationUtils.loadAnimation(this, R.anim.slide_right_in);
        slideRightOut = AnimationUtils.loadAnimation(this, R.anim.slide_right_out);

		viewFlipper = (ViewFlipper) findViewById(R.id.viewFlipper);

		gestureDetector = new GestureDetector(new GestureDetectorListener());
	}

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		return gestureDetector.onTouchEvent(event);
	}
}

评论

2 楼 鱼骨头123 2011-11-07  

鱼骨头123 写道

你好，你的教程很好，还有个问题想问一下：
<LinearLayout>
  <TextView></TextView>  //把此行删掉才能运行成功，不删掉运行时模拟器会有程序崩溃
  <ViewFlipper>
     <LinearLayout></LinearLayout>
  <ViewFlipper>
     

那我怎么实现部分页面滑动切换呢？

1 楼 鱼骨头123 2011-11-07  

你好，你的教程很好，还有个问题想问一下：
<LinearLayout>
  <TextView></TextView>  //把此行删掉才能运行成功，不删掉运行时模拟器会有程序崩溃
  <ViewFlipper>
     <LinearLayout></LinearLayout>
  <ViewFlipper>