android-recyclerview

问题 This question already has answers here : How to update RecyclerView Adapter Data? (13 answers) Closed yesterday . I have a RecyclerView horizontal image slider at the bottom of a fragment. The top of the fragment shows some details. Once the user clicks on the images at the bottom, the idea is to remove that image from the image slider and display its information in the fragment. Now the information shows up but the image does not gets removed from the RecyclerView . Here is what I have coded

问题 This question already has answers here : How to update RecyclerView Adapter Data? (13 answers) Closed yesterday . I have a RecyclerView horizontal image slider at the bottom of a fragment. The top of the fragment shows some details. Once the user clicks on the images at the bottom, the idea is to remove that image from the image slider and display its information in the fragment. Now the information shows up but the image does not gets removed from the RecyclerView . Here is what I have coded

问题 This question already has answers here : How to update RecyclerView Adapter Data? (13 answers) Closed yesterday . I have a RecyclerView horizontal image slider at the bottom of a fragment. The top of the fragment shows some details. Once the user clicks on the images at the bottom, the idea is to remove that image from the image slider and display its information in the fragment. Now the information shows up but the image does not gets removed from the RecyclerView . Here is what I have coded

问题 Currently my divider is only drawing one width: How would can I add an extra divider for every increment position in my recyclerview? Here is my ItemDecoration class: public SimpleDivider(Context mContext, ArrayList<Integer> mDepth) { mDivider = ContextCompat.getDrawable(mContext, R.drawable.recycler_view_divider); this.mContext = mContext; this.mDepth = mDepth; dividerMargin = 15; } @Override public void onDraw(@NonNull Canvas c, @NonNull RecyclerView parent, @NonNull RecyclerView.State

问题 In my project i have a recyclerView which contains at most 20 items. In the row template i have a text view and a button which is hidden initially and on the recyclerview item click the visibility of the button is toogled. The problem is when the button in the first row is shown and if it is scrolled out of the view and then scrolled back the button is invisible again without calling toogle visibility.How can i save the sate of objects in recycler view when it is scrolled out of the view 回答1:

问题 I am using data.add(0,item); notifyItemInserted(0); This works fine as long as the items space is not filled up. After that, animation is not seen. animation works fine when i do data.add(1,item); notifyItemInserted(1); How to add items in 0 position and show animation all the time. Do I have to use scrollToPosition? 回答1: call scrollToPosition(0) if you wan't it to scroll to position 0 after new item is added. RecyclerView will just keep the current top item in place, which is why you are not

问题 I have implemented a RecyclerView with SearchView and Filterable ; all classes from v7 . Now there is this behavior that is annoying. Whenever the keyboard is brought up or closed the contents of the RecyclerView goes blank. The count is still correct but the view is empty. My guess, it has something to do with the Layout size change. Is this behavior normal or something is wrong? How to deal with it? I can show the code but don't quite know which part will be relevant so tell me what can I

问题 I am listing all my media files in a recycler view. Suppose a media file is in a folder, then I want to show that folder in my recycler view too. Here is my code to list media files var projection = arrayOf(MediaStore.Video.Media.DISPLAY_NAME) var cursor = CursorLoader(applicationContext, MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection, null, null, null).loadInBackground() if (cursor != null) { while (cursor.moveToNext()) { val name = cursor.getString(cursor.getColumnIndex(MediaStore

问题 I am listing all my media files in a recycler view. Suppose a media file is in a folder, then I want to show that folder in my recycler view too. Here is my code to list media files var projection = arrayOf(MediaStore.Video.Media.DISPLAY_NAME) var cursor = CursorLoader(applicationContext, MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection, null, null, null).loadInBackground() if (cursor != null) { while (cursor.moveToNext()) { val name = cursor.getString(cursor.getColumnIndex(MediaStore

问题 I used support library v7-21 and the RecyclerView isn't showing correctly. GridLayoutManager and LinearLayoutManager is Ok. Problem only occurs when in StaggeredGridLayoutManager I Load my DataSet and then refresh the data. Data refresh is working fine but the RecyclerView 's view exist out of the screen. does anyone knows how to fix it? 回答1: Updated 2015-01-04 (at bottom) I have an example project to demonstrate this at https://github.com/dbleicher/recyclerview-grid-quickreturn . But here