Android Recyclerview 监听滑动状态和滑动距离

Posted 2023-02-14 王睿丶

计算滑动距离

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() 
            @Override
            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) 
                super.onScrolled(recyclerView, dx, dy);
                Log.d(TAG,getScollYDistance()+"");
            
);

    public int getScollYDistance() 
        LinearLayoutManager layoutManager = (LinearLayoutManager) rvHomeHouse.getLayoutManager();
        int position = layoutManager.findFirstVisibleItemPosition();
        View firstVisiableChildView = layoutManager.findViewByPosition(position);
        int itemHeight = firstVisiableChildView.getHeight();
        return (position) * itemHeight - firstVisiableChildView.getTop();
    

监听滑动状态

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() 
            @Override
            public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) 
                super.onScrollStateChanged(recyclerView, newState);
                switch (newState)
                    case RecyclerView.SCROLL_STATE_DRAGGING:
                        Log.d("wangrui","正在拖拽");
                        break;
                    case RecyclerView.SCROLL_STATE_IDLE:
                        Log.d("wangrui","滑动停止");
                        break;
                    case RecyclerView.SCROLL_STATE_SETTLING:
                        Log.d("wangrui","惯性滑动中");
                        break;
                
            
                        @Override
            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) 
                super.onScrolled(recyclerView, dx, dy);
                /*每次滑动必定调用这里*/