小编Sah*_*een的帖子

嗨，我正在使用来显示垂直列表，recycler view并且我正在使用渐变背景recycler view。recycler view使用来向左或向右滑动项目时，我正在删除项目ItemTouchHelper。

ItemTouchHelper.SimpleCallback simpleCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT) {
        @Override
        public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
            return false;
        }

        @Override
        public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
            mRecyclerAdapter.removeStock(viewHolder.getAdapterPosition());
        }

        @Override
        public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
            super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
            if(actionState!=ItemTouchHelper.ACTION_STATE_IDLE){
                viewHolder.itemView.setBackgroundColor(Color.LTGRAY);
            }
        }
    };
    ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleCallback);
    itemTouchHelper.attachToRecyclerView(recyclerView);

在这里，我将物品轻扫时将“回收者视图”项目背景更改为浅灰色，但是当回收者视图项目返回到空闲状态时，我希望恢复原始背景，即我希望返回该渐变背景。Recylerview xml文件： …

嗨我有一个按Arraylist日期顺序排列的日期.日期是这种格式yyyy-MM-dd.现在我想找出最长的连续子序列Arraylist.我已经在线检查了解决方案,但它们与int数组有关,我想查找日期数组.int数组的代码:

// Returns length of the longest contiguous subarray
int findLength(int arr[], int n)
{
int max_len = 1;  // Initialize result
for (int i=0; i<n-1; i++)
{
    // Initialize min and max for all subarrays starting with i
    int mn = arr[i], mx = arr[i];

    // Consider all subarrays starting with i and ending with j
    for (int j=i+1; j<n; j++)
    {
        // Update min and max in this subarray if needed
        mn …