ViewPager在ScrollView中无法正常滑动的问题

清疚 2022-05-16 06:40 188阅读 0赞

来源：

能够兼容ViewPager的ScrollView [http://justwyy.iteye.com/blog/1567390][http_justwyy.iteye.com_blog_1567390]

ScrollView中嵌入ViewPager，ViewPager的滑动出现问题  [http://bbs.csdn.net/topics/390213480][http_bbs.csdn.net_topics_390213480]

在网上找到两种方法，都是自定义scrollview，大家可以试试。

方法一：

public class CustomScrollView extends ScrollView {
        private boolean canScroll;
    
        private GestureDetector mGestureDetector;
        View.OnTouchListener mGestureListener;
    
        public CustomScrollView(Context context, AttributeSet attrs) {
            super(context, attrs);
            mGestureDetector = new GestureDetector(new YScrollDetector());
            canScroll = true;
        }
        
        @Override
        public boolean onInterceptTouchEvent(MotionEvent ev) {
            if(ev.getAction() == MotionEvent.ACTION_UP)
                canScroll = true;
            return super.onInterceptTouchEvent(ev) && mGestureDetector.onTouchEvent(ev);
        }
    
        class YScrollDetector extends SimpleOnGestureListener {
            @Override
            public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
                if(canScroll)
                    if (Math.abs(distanceY) >= Math.abs(distanceX))
                        canScroll = true;
                    else
                        canScroll = false;
                return canScroll;
            }
        }
    }

方法二：

public class CustomScrollView extends ScrollView {
        // 滑动距离及坐标  
        private float xDistance, yDistance, xLast, yLast;  
    
        public CustomScrollView(Context context, AttributeSet attrs) {  
            super(context, attrs);  
        }  
    
        @Override  
        public boolean onInterceptTouchEvent(MotionEvent ev) {  
            switch (ev.getAction()) {  
                case MotionEvent.ACTION_DOWN:  
                    xDistance = yDistance = 0f;  
                    xLast = ev.getX();  
                    yLast = ev.getY();  
                    break;  
                case MotionEvent.ACTION_MOVE:  
                    final float curX = ev.getX();  
                    final float curY = ev.getY();  
    
                    xDistance += Math.abs(curX - xLast);  
                    yDistance += Math.abs(curY - yLast);  
                    xLast = curX;  
                    yLast = curY;  
    
                    if(xDistance > yDistance){  
                        return false;  
                    }    
            }  
    
            return super.onInterceptTouchEvent(ev);  
        }  
    }

[http_justwyy.iteye.com_blog_1567390]: http://justwyy.iteye.com/blog/1567390
[http_bbs.csdn.net_topics_390213480]: http://bbs.csdn.net/topics/390213480