android Gallery滑动不流畅的解决

时间:2024-09-11 16:34:20
import android.content.Context;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.Gallery; @SuppressWarnings("deprecation")
public class MyGallery extends Gallery { public MyGallery(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
} public MyGallery(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
} public MyGallery(Context context) {
super(context);
// TODO Auto-generated constructor stub
} // 减慢滑动速度
private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2) {
return e2.getX() > e1.getX();
} @Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
// TODO Auto-generated method stub
// return super.onFling(e1, e2, 0, velocityY);//方法一:只去除翻页惯性
// return false;//方法二:只去除翻页惯性 注:没有被注释掉的代码实现了开始说的2种效果。
int kEvent;
if (isScrollingLeft(e1, e2)) {
// Check if scrolling left
kEvent = KeyEvent.KEYCODE_DPAD_LEFT;
}
else {
// Otherwise scrolling right
kEvent = KeyEvent.KEYCODE_DPAD_RIGHT;
}
onKeyDown(kEvent, null);
return true;
}
}

重写Gallery的几个方法就可以解决了