SwipeRefreshLayout和RecyclerView滑动冲突解决方案

偏执的太偏执、 2022-06-05 06:48 345阅读 0赞

# SwipeRefreshLayout和RecyclerView滑动冲突解决方案 #

参考:[http://www.jianshu.com/p/34cbaddb668b][http_www.jianshu.com_p_34cbaddb668b]

## 1.界面内只有RecyclerView和SwipeRefreshLayout ##

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
                @Override
                public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                    //判断RecyclerView第一项是否是当前的第一项
                    int topRowVerticalPosition =
                            (recyclerView == null || recyclerView.getChildCount() == 0) ? 0 :
                                    recyclerView.getChildAt(0).getTop();
                    mRefreshLayout.setEnabled(topRowVerticalPosition >= 0);
    
                }
    
                @Override
                public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                    super.onScrollStateChanged(recyclerView, newState);
                }
            });

## 2.界面内还有其他view ##

<android.support.v4.widget.SwipeRefreshLayout>
            <android.support.design.widget.CoordinatorLayout>
                <android.support.design.widget.AppBarLayout>
                    <android.support.design.widget.CollapsingToolbarLayout>
                    </android.support.design.widget.CollapsingToolbarLayout>
                </android.support.design.widget.AppBarLayout>
                <android.support.v7.widget.RecyclerView>
                </android.support.v7.widget.RecyclerView>
            </android.support.design.widget.CoordinatorLayout>
    
        </android.support.v4.widget.SwipeRefreshLayout>

比如是上面这张结构的,RecyclerView上面还有AppBarLayout.

则只需要给AppBarLayout添加偏移改变监听器,如果竖直的偏移大于0,则设置SwipeRefreshLayout为可用.  
当我在AppBarLayout可见时,手机由下往上滑动时,verticalOffset<0;  
当手指由上往下,滑动到顶部,这时手指再由上往下滑动时,verticalOffset=0,  
这时可以设置SwipeRefreshLayout为可用了.

mAppBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
                @Override
                public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
                    mRefreshLayout.setEnabled(verticalOffset >= 0);
                }
            });

[http_www.jianshu.com_p_34cbaddb668b]: http://www.jianshu.com/p/34cbaddb668b