notifydatasetchanged

问题 If I call notifyDataSetChanged() on the custom adapter associated to my ListView, all the views should refresh themself ( getView() will be called). Now I have a BroadcastReceiver that is listening to an event. When the event fires, the ListView must be refreshed. How can I achieve this? Thanks! 回答1: If you refresh listview from receiver you'll have code like this: BroadcastReceiver br; public final static String BROADCAST_ACTION = "BROADCAST_ACTION"; br = new BroadcastReceiver() { public

问题 I have a recyclerview whenever i select an item in recyclerview to play music i need to animate my AnimationDrawable equalizer of selected item but it is not animating when i call notifyDataSetChanged to refresh my view to show equalizer on selected item. 来源： https://stackoverflow.com/questions/47574529/animationdrawable-in-recyclerview-item-not-animating-on-notifydatasetchanged

问题 in my code when delete row of list view list view don't change.i use adapter.notifyDataSetChange() but it not word.this is my code : code make different position of class. CustomList adapter; Integer[] imageId; public String[] _Data2; public int positionAll; ArrayList<ArrayList<String>> _Data = new ArrayList<ArrayList<String>>(); DataBase data = new DataBase(Show_Code.this, "MELK_TBL"); try { data.open(); _Data = data.GetData(); imageId = new Integer[_Data.size()]; _Data2 = new String[_Data

问题 I have an adapter which fills a ListView with 2 TextViews with data from a TreeMap. When the user adds or deletes Data from the ListView, the View should be refreshed. So here is my Adapter: public class MyAdapter extends BaseAdapter { private final ArrayList mData; public MyAdapter(Map<String, String> map) { mData = new ArrayList(); mData.addAll(map.entrySet()); } @Override public int getCount() { return mData.size(); } @Override public Map.Entry<String, String> getItem(int position) {

问题 I am using Glide 3.7.0 with RecyclerView . The item view always blinks when refreshing (calling notifyDataSetChanged ). Here is my code: Glide .with(context) .load(filepath) .diskCacheStrategy(DiskCacheStrategy.NONE) .skipMemoryCache(true) .dontAnimate() .into(imageview); When I use no cache, the ImageView has a null Bitmap when notifyDataSetChanged method is called and Glide hasn't finished loading the bitmap. If I use the code below: Glide .with(context) .load(filepath) .dontAnimate() .into

问题 scenario: First mainactivity launches and from the menu option user launches second activity using intent and there he adds some text to edittext and get that edittext value using intent to the first activity and add that value to the listview. FirstActivity: public class MainActivity extends Activity { ListView lv; EditText et; String AddedTask ; ArrayList<Model> modelList; CustomAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState

问题 I am working with an application where i get records from my azure database and insert it into an array, and the listview must display my array. My error comes when i try to call the method notifyDatasetChanged , Here is my code: Button search; EditText Esearch; ListView list; BaseAdapter ADAhere; Connection connect; List<Map<String,String>> MyData = new ArrayList(); @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView =

问题 I'm using recyclerview to display data from sqlite database using cursor , when I delete an item from database the item gets deleted but my recycler view doesn't refresh. I have to go back to my main activity and then the data gets refreshed. I have used notifyItemRemoved() and notifyDataSetChanged() Here is my code. Adapter public class BookmarkAdapter extends RecyclerView.Adapter<BookmarkAdapter.ViewHolder> { public Cursor cursor; DatabaseHelper mDBHelper; public BookmarkAdapter(){ } public

问题 I am using Expandable ListView and the data in it is populated through Sqlite database. I have given an option to delete a group from ExpandableListView and it actually deletes the respective row in the database. But the activity doesn't gets refreshed and the deleted 'case' is visible until one goes back and comes again to this activity . I have created a class that extends *BaseExpandableListAdapter* . It contains all the overridden methods. Following is the code: public class

问题 I am trying to create messaging kind of screen using recyclerView which will start from bottom and will loadMore data when user reached top end of chat. But I am facing this weird issue. My recyclerView scrolls to top on calling notifyDataSetChanged. Due to this onLoadMore gets called multiple times. Here is my code: LinearLayoutManager llm = new LinearLayoutManager(context); llm.setOrientation(LinearLayoutManager.VERTICAL); llm.setStackFromEnd(true); recyclerView.setLayoutManager(llm); ** In