刷新布局嵌套NestedScrollView嵌套ViewPager滑动ViewPager不灵敏问题刷新布局嵌套NestedScrollView嵌套

解决NestedScrollView嵌套ViewPager滑动ViewPager不灵敏，滑动ViewPager的时候稍微一倾斜就滑动NestedScrollView了。

public class DecoratorViewPager extends ViewPager { private ViewGroup parent; //NestedScrollView布局 private ViewGroup refreshParent; //刷新布局（如果没有刷新可以不设置） private float mDownPosX = 0; private float mDownPosY = 0; public DecoratorViewPager(Context context) { super(context); }public DecoratorViewPager(Context context, AttributeSet attrs) { super(context, attrs); }//在初始化ViewPager和NestedScrollView以后的地方调用此方法，例如viewPager.setNestedpParent(nestedScrollView); public void setNestedpParent(ViewGroup parent) { this.parent = parent; }//如果嵌套的有刷新布局也需要调用这个方法，例如viewPager.setRefreshParent(myRefreshView); public void setRefreshParent(ViewGroup refreshParent){ this.refreshParent = refreshParent; }@Override public boolean onInterceptTouchEvent(MotionEvent ev) { // TODO Auto-generated method stub final float x = ev.getX(); final float y = ev.getY(); switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: mDownPosX = x; mDownPosY = y; if (parent != null) { //通知父ViewPager不要干扰本控件的操作 parent.requestDisallowInterceptTouchEvent(true); } if (refreshParent != null) {//刷新控件禁止滑动 refreshParent.setEnabled(false); } break; case MotionEvent.ACTION_MOVE: final float deltaX = Math.abs(x - mDownPosX); final float deltaY = Math.abs(y - mDownPosY); if (deltaX > deltaY) { if (parent != null) { //通知父ViewPager不要干扰本控件的操作 parent.requestDisallowInterceptTouchEvent(true); } if (refreshParent != null) {//刷新控件禁止滑动 refreshParent.setEnabled(false); } //当拦截触摸事件到达此位置的时候，返回true， //说明将onTouch拦截在此控件，进而执行此控件的onTouchEvent return true; } else { if (parent != null) { parent.requestDisallowInterceptTouchEvent(false); } if (refreshParent != null) {//刷新控件可以滑动 refreshParent.setEnabled(true); } } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: if (refreshParent != null) {//刷新控件可以滑动了 refreshParent.setEnabled(true); } break; default: break; } return super.onInterceptTouchEvent(ev); }@Override public boolean onTouchEvent(MotionEvent ev) { if (refreshParent != null) {//刷新控件可以滑动了 refreshParent.setEnabled(true); } return super.onTouchEvent(ev); } }

【刷新布局嵌套NestedScrollView嵌套ViewPager滑动ViewPager不灵敏问题】

public class VerticalScrollView extends NestedScrollView { private float xDistance, yDistance, xLast, yLast; public VerticalScrollView(Context context) { super(context); } public VerticalScrollView(Context context, AttributeSet attrs) { super(context, attrs); } public VerticalScrollView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); }@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); } }