android-adapter

问题 I keep getting the error "RecyclerView: No adapter attached; skipping layout" when the RecyclerView list is shown. I have 3 tabs and one tab has a RecyclerView list that is populated from SQLite database. I don't get any crashes and the data is shown correctly in the view but I still get this error. I thought it was just a warning because the data is in place correctly but when I tried onClick it doesn't work and I'm sure it has something to do with this error. I know this question has been

问题 I am new to Android development and I ran into a problem which I find difficult to solve. I am trying to figure out how to use an AutoCompleteTextView widget properly. I want to create a AutoCompleteTextView , using XML data from a web service. I managed to get it to work, but I am defenitely not pleased with the output. I would like to put a HashMap with id => name pairs into the AutoCompleteTextView and get the id of the clicked item. When I click on the autocomplete filtered set output, I

问题 I have a Custom Base Adapter I am using with my ListView in a DrawerLayout. The ListView inflates ok, but I cannot call the onItemClickListener. Here is the onCreate portion of the MainAcitivty, where I set the adapter and the onItemClickListener protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); isPhone = getResources().getString(R.string.screen_type).toString().equals("phone"); mTitle = getResources().getString(R

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I've just started out coding for Android but am struggling to get my head around listviews. For example I need to understand how I can show another listview when clicking on an item in the first listview. Also how I can display a textview when clicking on an item in a listview. If anyone knows of any good

问题 i got an issue with my adapter. Here is the code: @Override public View getView(final int position, final View convertView, final ViewGroup parent) { final ViewHolder viewHolder; View view = convertView; if (view == null) { view = LayoutInflater.from(mContext).inflate(R.layout.row, parent, false); viewHolder = new ViewHolder(); viewHolder.textTitle = (TextView) view.findViewById(R.id.title); viewHolder.checkBox = (CheckBox) view.findViewById(R.id.checkBox); viewHolder.checkBox.setTag(position

问题 I a using ViewPager with FragmentStatePageAdapter on my screen I have 5 pages which has lots of images and views. Currently I have mViewPager.setOffscreenPageLimit(1); so only current, previous and next will be in memory and other 2 will be destroyed. But for that destroyed fragments I want to make use of saveState() and restoreState() of the adapter to maintain its state so when I come back to that screen it will anyways go to onCreateView() of that fragment what will maintain state also.

问题 I'm using Paging Library to load data from network using ItemKeyedDataSource . After fetching items user can edit them, this updates are done inside in Memory cache (no database like Room is used). Now since the PagedList itself cannot be updated (discussed here) I have to recreate PagedList and pass it to the PagedListAdapter . The update itself is no problem but after updating the recyclerView with the new PagedList , the list jumps to the beginning of the list destroying previous scroll

问题 I've got this activity, which holds a fragment. This fragment layout consists of a view pager with several fragments (two, actually). When the view pager is created, its adapter is created, getItem gets called and my sub fragments are created. Great. Now when I rotate the screen, the framework handles the fragment re-creation, the adapter is created again in my onCreate from the main fragment, but getItem never gets called , so my adapter holds wrong references (actually nulls) instead of the

问题 I have a delete button in my adapter call and when i press the delete button i want to 1. remove the value from list and, 2. Update the size of the list in the main activity and . Have tried using Interface where i referred here but it's not working and i am so confused. So can any one provide me an best way My Adapter Code: @Override public void onBindViewHolder(final AddLineItem_Adapter.ViewHolder holder, final int position) { final AddLineItem_ListView addLineItem_listView = addLineItem

问题 I'm having a slightly weird error here on my adapter. The view the adapter is creating is a thumbnail on the left side and a table with a few rows. Each row have two textviews. One of the textviews have the android:autoLink="web" property set and the listview have an onItemClickListener on it. the problem is that every time a TextView auto-links it's content, next time its parent view is converted, it doesn't receive clicks from the onItemClickListener anymore. Let me clarify with an example: