package com.wpc.library.widget;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.view.ViewConfiguration;
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import android.widget.Gallery;
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public class CustomGallery extends Gallery {
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private float mLastMotionX;// 初始x坐标
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private float mLastMotionY;// 初始y坐标
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private int mTouchSlop;// 触摸最短距离
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public CustomGallery(Context context) {
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super(context);
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}
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public CustomGallery(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public CustomGallery(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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public boolean onInterceptTouchEvent(MotionEvent ev) {
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final ViewConfiguration configuration = ViewConfiguration
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.get(getContext());
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mTouchSlop = configuration.getScaledTouchSlop();// 触摸最短距离
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final int action = ev.getAction();
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// x坐标
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final float x = ev.getX();// 每次触摸发生变化的低吼都会记录下坐标
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// y坐标
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final float y = ev.getY();// 每次触摸发生变化的低吼都会记录下坐标
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switch (action) {
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case MotionEvent.ACTION_DOWN:// 记录初始位置
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mLastMotionX = x;
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mLastMotionY = y;
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break;
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case MotionEvent.ACTION_MOVE:
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// 此时的xy是手指离开时的位置坐标
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final int deltaX = (int) (mLastMotionX - x);// 水平方向滑动距离
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final int deltaY = (int) (mLastMotionY - y);// 垂直方向滑动距离
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if (Math.abs(deltaX) > mTouchSlop
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&& Math.abs(deltaY) < Math.abs(deltaX)) {// 表明是横向滑动交给,Gallery
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return true;
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}
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break;
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}
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return false;
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}
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}
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