Scrollview和listview 与VIewpager冲突问题

最新推荐文章于 2024-04-18 12:51:50 发布

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本文介绍了一种解决ScrollView嵌套ViewPager时出现滑动冲突的方法。通过自定义PagerScrollView和UnSrollableListView两个组件，确保了在复杂的嵌套滚动场景下依然能够流畅地进行滑动操作。

Scrollview和listview 与VIewpager冲突问题

package com.dreamlive.widget.view;

import android.content.Context;import android.util.AttributeSet;import android.view.GestureDetector;import android.view.GestureDetector.SimpleOnGestureListener;import android.view.MotionEvent;import android.view.View;import android.widget.ScrollView;/** * * * 解决ScrollView嵌套ViewPager出现的滑动冲突问题 */public class PagerScrollView extends ScrollView {private boolean canScroll;private GestureDetector mGestureDetector;View.OnTouchListener mGestureListener;@SuppressWarnings("deprecation")public PagerScrollView(Context context, AttributeSet attrs) {super(context, attrs);mGestureDetector = new GestureDetector(new YScrollDetector());canScroll = true;}@Overridepublic boolean onInterceptTouchEvent(MotionEvent ev) {if (ev.getAction() == MotionEvent.ACTION_UP)canScroll = true;return super.onInterceptTouchEvent(ev)&& mGestureDetector.onTouchEvent(ev);}class YScrollDetector extends SimpleOnGestureListener {@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2,float distanceX, float distanceY) {if (canScroll)if (Math.abs(distanceY) >= Math.abs(distanceX))canScroll = true;elsecanScroll = false;return canScroll;}}}

package com.dreamlive.widget.view;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListView;


public class UnSrollableListView extends ListView {
	public UnSrollableListView(Context context) {
		super(context);
	}

	public UnSrollableListView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public UnSrollableListView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
				MeasureSpec.AT_MOST);

		super.onMeasure(widthMeasureSpec, expandSpec);
	}
}