Question

我有一个自定义SwipeRefreshLayout的Activity和一个垂直滑动的Vertical ViewPager。（基本上是一副卡片，可以通过刷卡刷新来引用）。

所以现在，当我尝试滑动垂直Viewpager SwipeRefreshLayout处理触摸事件并刷新布局时，视图寻呼机的页面不会移动。

我尝试了两件事，但没有运气：

仅当用户从中启动时才启用滑动以刷新布局工具栏。 MotionEvent.ACTION_DOWN事件getY()给出了工具栏的y 坐标。
如果ViewPager是第一个接受触摸事件的话，那么就是不要将其委托给SwipeRefreshLayout。

活动的布局文件如下所示。

<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:HelveticaTextView="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:fab="http://schemas.android.com/apk/res-auto"
android:id="@+id/DrawerLayout" android:layout_width="match_parent"
android:layout_height="match_parent">


<com.CustomSwipeToRefresh xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/swipe_container" android:layout_width="match_parent"
    android:layout_height="100dp" app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/coordinatorLayout" android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.Toolbar
            android:id="@+id/tool_bar" android:layout_width="match_parent"
            android:layout_height="@dimen/toolbar_min_height"
            android:background="@color/theme_color_yellow_dark"
            app:layout_collapseMode="pin"
            app:layout_scrollFlags="scroll|enterAlways" app:titleTextColor="@color/white">

        </android.support.v7.widget.Toolbar>


        <RelativeLayout android:layout_width="match_parent"
            android:layout_height="match_parent" android:layout_marginBottom="@dimen/toolbar_min_height"
            android:layout_marginTop="@dimen/toolbar_min_height"
            android:background="@color/transparent">

            <com.VerticalViewPager 
                android:id="@+id/pagerhome"
                android:layout_width="match_parent" 
                android:layout_height="match_parent" />

        </RelativeLayout>

    </android.support.design.widget.CoordinatorLayout>

</com.CustomSwipeToRefresh>

<!-- to show nav drawer icons here -->
<android.support.v7.widget.RecyclerView
    android:id="@+id/RecyclerView" android:layout_width="320dp"
    android:layout_height="match_parent" android:layout_gravity="left"
    android:background="#ffffff" android:scrollbars="vertical">

  </android.support.v7.widget.RecyclerView>


</android.support.v4.widget.DrawerLayout>

我的CustomSwipeToRefresh触摸拦截操作无法正常工作

 @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:

                mPrevY = MotionEvent.obtain(event).getY();
                mDeclined = false; // New action
                break;

            case MotionEvent.ACTION_MOVE:


                final float eventY = event.getY();
                float yDiff = Math.abs(eventY - mPrevY);

                //disable swipe to refresh if user touches below 100px or dp
                if (mDeclined || mPrevY > 100  ) {
                    mDeclined = true; 
                    return false;
                }
        }

        return super.onInterceptTouchEvent(event);
    }

Answer 1

以下逻辑对我有用

当用户开始从工具栏中拖动时，启用滑动以刷新布局。即，如果用户尝试从顶部滑动并且它包含工具栏，则仅启用滑动，如果用户触摸在工具栏位置后启动，则禁用滑动

@Override
    public boolean onInterceptTouchEvent(MotionEvent event) {

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                mPrevY = MotionEvent.obtain(event).getY();
                mDeclined = false; 

                if (mPrevY > getResources().getDimensionPixelSize(R.dimen.disable_swipe_after) ) {
                    mDeclined = true; 
                }
                Log.d("Declined", mDeclined + "--" + mPrevY);

                break;

            case MotionEvent.ACTION_MOVE:

                if (mDeclined) {
                    return false;
                }
        }
        return super.onInterceptTouchEvent(event);
    }

Answer 2

mPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        Log.e("onPageScrolled position(=",String.valueOf(position));
        Log.e("onPageScrolled positionOffset(=",String.valueOf(positionOffset));
        Log.e("onPageScrolled positionOffsetPixels(=",String.valueOf(positionOffsetPixels));
    }

    @Override
    public void onPageSelected(int position) {
        Log.e("onPageSelected position(=",String.valueOf(position));
    }

    @Override
    public void onPageScrollStateChanged(int state) {
        Log.e("onPageScrollStateChanged state(=",String.valueOf(state));
        if(state==1) {
            swipeRefreshLayout.setEnabled(false);
        } else {
           swipeRefreshLayout.setEnabled(true);
        }
    }
});

SwipeRefreshLayout和Vertical ViewPager Touch问题

2 个答案: