package com.android.app_base.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.widget.ScrollView;
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/**
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* @author Ljj
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* @date 2023.03.20. 16:25
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* @desc
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*/
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public class CustomScrollView extends ScrollView {
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int lastX = -1;
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int lastY = -1;
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public CustomScrollView(Context context) {
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super(context);
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}
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public CustomScrollView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public CustomScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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}
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@Override
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public boolean dispatchTouchEvent(MotionEvent ev) {
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int x = (int) ev.getRawX();
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int y = (int) ev.getRawY();
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int dealtX = 0;
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int dealtY = 0;
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switch (ev.getAction()) {
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case MotionEvent.ACTION_DOWN:
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dealtX = 0;
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dealtY = 0;
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// 保证子View能够接收到Action_move事件
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getParent().requestDisallowInterceptTouchEvent(true);
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break;
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case MotionEvent.ACTION_MOVE:
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dealtX += Math.abs(x - lastX);
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dealtY += Math.abs(y - lastY);
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// 这里是够拦截的判断依据是左右滑动,读者可根据自己的逻辑进行是否拦截
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if (dealtX < dealtY) {
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getParent().requestDisallowInterceptTouchEvent(true);
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System.out.println("上下滑动"+true);
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return super.dispatchTouchEvent(ev);
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} else {
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getParent().requestDisallowInterceptTouchEvent(false);
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System.out.println("左右滑动"+false);
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}
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lastX = x;
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lastY = y;
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break;
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case MotionEvent.ACTION_CANCEL:
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break;
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case MotionEvent.ACTION_UP:
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break;
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}
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return super.dispatchTouchEvent(ev);
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}
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}
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