标签：
添加手势监听：
GestureDetector detector;// 手势侦听 detector = new GestureDetector(getApplicationContext(),new myGestureListener());
手势侦听 在 onFling 中指定屏幕滑动效果和展示图像：
class myGestureListener implements OnGestureListener {
// 当触碰事件按下时触发该方法
@Override
public boolean onDown(MotionEvent event) {
return false;
}
// 用户在触摸屏上拖过时触发该方法
@Override
public boolean onFling(MotionEvent event1, MotionEvent event2,
float velocityX, float velocityY) {
((GridView) viewSwitcher.getNextView()).setAdapter(adapter);
if (event2.getX() - event1.getX() > FLIP_DISTANCE) {
if (screenNo > 0) {
screenNo--;
// 添加屏幕动画切换效果
viewSwitcher.setInAnimation(animations[0]);
viewSwitcher.setInAnimation(animations[3]);
viewSwitcher.showPrevious();
return true;
} else {
Toast.makeText(getApplicationContext(), "已无更多页面",
Toast.LENGTH_LONG).show();
}
} else {
if (screenNo < screenCount - 1) {
screenNo++;
viewSwitcher.setInAnimation(animations[1]);
viewSwitcher.setInAnimation(animations[2]);
viewSwitcher.showNext();
return true;
} else {
Toast.makeText(getApplicationContext(), "已无更多页面",
Toast.LENGTH_LONG).show();
}
}
return false;
}
// 用户在屏幕上长按时触发该方法
@Override
public void onLongPress(MotionEvent event) {
}
// 用户在屏幕上滚动时触发该方法
@Override
public boolean onScroll(MotionEvent event1, MotionEvent event2,
float velocityX, float velocityY) {
return false;
}
// 用户在触摸屏上按下，而且还未移动和松开时触发该方法
@Override
public void onShowPress(MotionEvent arg0) {
}
// 用户在触屏上的轻击事件将触发该方法
@Override
public boolean onSingleTapUp(MotionEvent arg0) {
return false;
}
}
进入的第一个界面展示 代码：
public void next(View v) {
if (screenNo == -1) {
screenNo++;
((GridView) viewSwitcher.getNextView()).setAdapter(adapter);
viewSwitcher.showNext();
} else {
Toast.makeText(getApplicationContext(), "已无更多页面", Toast.LENGTH_LONG)
.show();
}
}
定义BaseAdapter：
private BaseAdapter adapter = new BaseAdapter() {
@Override
public long getItemId(int position) {
return position;
}
@Override
public DataItem getItem(int position) {
return total.get(screenNo * Number_Per_Screen + position);
}
@Override
public int getCount() {
if (screenNo == screenCount - 1
&& total.size() % Number_Per_Screen != 0) {
return total.size() % Number_Per_Screen;
}
return Number_Per_Screen;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (convertView == null) {
view = layoutInflater.inflate(R.layout.labelicon, null);
}
ImageView imageview = (ImageView) view.findViewById(R.id.imageview);
imageview.setImageDrawable(getItem(position).drawable);
TextView textView = (TextView) view.findViewById(R.id.textview);
textView.setText(getItem(position).DataName);
return view;
}
};
此处只是对 疯狂Android 讲义 中ViewSwitcher 的 手势 添加 做的一个小demo，本人处于初学阶段，如有不对的地方，请各位多多指正！！
Android 讲义第二版 ViewSwitcher + GestureDetector 练习
标签：
原文地址：http://my.oschina.net/leov1/blog/485101
