activitygroup中用了ViewFlipper控件，会被拦截onFling事件

activitygroup中用了ViewFlipper控件，会被拦截onFling事件，然后奇葩的是，我把onDown函数的 return false改成return true就好了

参考：http://jykenan.iteye.com/blog/1586483

这里说把onDown()方法return true;这样才能触发onFling事件。  

package com.zll.clostyle;import java.util.List;import java.util.Map;import com.Bill_Ming.image.LoadImage;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.util.Log;import android.view.GestureDetector;import android.view.GestureDetector.OnGestureListener;import android.view.MotionEvent;import android.view.View;import android.view.Window;import android.view.View.OnClickListener;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Button;import android.widget.GridView;import android.widget.ImageView;import android.widget.ViewFlipper;/** *  接收JSON中Url和专题名 */public class Activity_MainApp extends Activity implements OnGestureListener{private static final int FLING_MIN_DISTANCE = 50;final public String AppImg = "img";final public String AppName = "name";final public String AppLink = "link";final public String AppPosition = "AppPosition";final public String AppList = "AppList";private List<Map<String, Object>> AppPhotoList;// 存储专题信息private GridView gridView;private Button login = null;private ViewFlipper ad_viewfilpper;private GestureDetector ad_detector;private void startIntent(int position){Intent intent = new Intent(Activity_MainApp.this, Activity_MainItemApp.class);intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);intent.putExtra("position", position);// 将单个专题 传到下一个ActivityLog.i("positio", position+"");Window w = Activity_MainAppGroup.group_first.getLocalActivityManager().startActivity("Activity_MainItemApp", intent);Log.i("window", w+"");View view = w.getDecorView();Log.i("view!!", view+"");Activity_MainAppGroup.group_first.setContentView(view);}@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_tabhost_main_app);AppPhotoList = FirstActivity.AppPhotoList;gridView = (GridView) findViewById(R.id.AppView);gridView.setAdapter(new Activity_MainApp_GridViewAdapter(this, AppPhotoList));gridView.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {// TODO Auto-generated method stubstartIntent(arg2);}}); login = (Button)findViewById(R.id.photograph);  login.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent loginint = new Intent();loginint.setClass(Activity_MainApp.this, LoginClosy.class);startActivity(loginint);}});  // 注册一个GestureDetectorad_detector = new GestureDetector(this);ad_viewfilpper = (ViewFlipper) findViewById(R.id.advertisement);setAdImg();/** * 自动滑动，从右向左 * 启动自动播放View，可以通过设置如下三个成员函数实现： *  1、setAutoStart(true)，设置是否自动播放功能，true为自动播放，false为不自动播放，开启自动播放设为true  *  2、setFlipInterval(int milliseconds)，设置View播放的时间间隔，如3000（3秒）  *  3、startFlipping()，开始自动播放 停止自动播放View，设置成员函数如下：  * 1、 stopFlipping()，停止自动播放 * 2、 setAutoStart(false)，停止自动播放，设为false */ad_viewfilpper.setAutoStart(true); // 设置自动播放功能（点击事件，前自动播放）ad_viewfilpper.setFlipInterval(3000);if (ad_viewfilpper.isAutoStart() && !ad_viewfilpper.isFlipping()) {ad_viewfilpper.startFlipping();}}public void setAdImg(){//广告图片Bitmap bitmap = null;Drawable drawable = null;LoadImage loadImage = new LoadImage();Log.e("setAdImg","广告啊啊");for(int i =0;i <FirstActivity.AdData.size(); i++ ){ImageView image1 = new ImageView(this);bitmap = loadImage.getBitmap(FirstActivity.AdData.get(i).get("img").toString());drawable = new BitmapDrawable(bitmap); image1.setBackgroundDrawable(drawable);// 增加viewad_viewfilpper.addView(image1);}}@Overridepublic boolean onTouchEvent(MotionEvent event) {// TODO Auto-generated method stubad_viewfilpper.stopFlipping(); // 点击事件后，停止自动播放ad_viewfilpper.setAutoStart(false);Log.e("onTouchEvent", "触摸事件");// 将触屏事务交给手势辨认类处理return this.ad_detector.onTouchEvent(event);}@Overridepublic boolean onDown(MotionEvent e) {// TODO Auto-generated method stubLog.i("OnDown", "true");return true;   //return false;   原来是false时，滑动没用，改成true却行了}@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {/** * 用户按下触摸屏，快速移动后松开，就会触发这个事件。 在这段代码示例中，对手指滑动的距离进行了计算，如果滑动距离大于100像素， * 就做切换动作，否则不做任何切换动作。 */Log.e("onfling","aaaaaaaaaaaaaaaaaaa" );if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE) {// 设置View进入和退出的动画效果this.ad_viewfilpper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.left_in));this.ad_viewfilpper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.left_out));this.ad_viewfilpper.showNext();Log.e("onfling","if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE)" );return true;}if (e1.getX() - e2.getX() < -FLING_MIN_DISTANCE) {this.ad_viewfilpper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.right_in));this.ad_viewfilpper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.right_out));this.ad_viewfilpper.showPrevious();Log.e("onfling","if (e1.getX() - e2.getX() < -FLING_MIN_DISTANCE)" );return true;}return false;}@Overridepublic void onLongPress(MotionEvent e) {// TODO Auto-generated method stub}@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,float distanceY) {// TODO Auto-generated method stubreturn false;}@Overridepublic void onShowPress(MotionEvent e) {// TODO Auto-generated method stub}@Overridepublic boolean onSingleTapUp(MotionEvent e) {// TODO Auto-generated method stubreturn false;}}