|
rn 返回ViewPage
*/
@Override
public Object instantiateItem(ViewGroup container, final int position) {
ImageView imageView = (ImageView) images.get(position % images.size());
container.addView(imageView);
//监听Touch事件 长按图片时禁止viewpage滚动
viewPage.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
switch (motionEvent.getAction()) {
case MotionEvent.ACTION_DOWN:
//鼠标按下的时候移除handler
handler.removeCallbacksAndMessages(null);
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
//鼠标抬起的时候移除handler 并且重新发送handler
handler.removeCallbacksAndMessages(null);
handler.sendEmptyMessageDelayed(OPTION_TYPE_AUTO, 3000);
break;
}
return false; //返回false 表示不消费触摸操作 任然可以触发其他操作
}
});
//为当前imageView设置点击监听
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(MainActivity.this, imgDescriptions[position % imgDescriptions.length], Toast.LENGTH_SHORT).show();
}
});
return imageView;
}
/**
* 工系统调用 判断instantiateItem方法返回的View是否和object相同
*
* @param view instantiateItem方法返回的ImageView
* @param object
* @return
*/
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
/**
* 供系统调用 用于销毁ViewPage中的object
*
* @param container
* @param position
* @param object
*/
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
}
}
|