Gallery实现流畅的新闻滚动 方法复写
- 前端
- Stella981
- 0
package com.ename.views;
import android.content.Context;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.Gallery;
public class TopNewsGallery extends Gallery {
public TopNewsGallery(Context context) {
super(context);
}
public TopNewsGallery(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public TopNewsGallery(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
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;
}
private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2) {
return e2.getX() > e1.getX();
}
}
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