android-adapter

问题 I am trying to implement a search filter on complex object data in recyclerview when I type in the Edit text first-time it works properly, but whenever I try to delete characters by pressing back-space in order to modify our search- I am repeatedly failing in this regard. I can only search once !! etSearch = (EditText) findViewById(R.id.edittext); etSearch.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { }

问题 I am trying to implement a search filter on complex object data in recyclerview when I type in the Edit text first-time it works properly, but whenever I try to delete characters by pressing back-space in order to modify our search- I am repeatedly failing in this regard. I can only search once !! etSearch = (EditText) findViewById(R.id.edittext); etSearch.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { }

问题 Is it possible to create a multiple view type in my adapter.. like adding a view for my header then below the header is a list. code snippet for my adapter : public class StoreAdapter extends RecyclerView.Adapter<StoreAdapter.BindingHolder> { List<Store> mStoreList; public class BindingHolder extends RecyclerView.ViewHolder { private ViewDataBinding binding; public BindingHolder(View v) { super(v); binding = DataBindingUtil.bind(v); } public ViewDataBinding getBinding() { return binding; } }

问题 Is it possible to create a multiple view type in my adapter.. like adding a view for my header then below the header is a list. code snippet for my adapter : public class StoreAdapter extends RecyclerView.Adapter<StoreAdapter.BindingHolder> { List<Store> mStoreList; public class BindingHolder extends RecyclerView.ViewHolder { private ViewDataBinding binding; public BindingHolder(View v) { super(v); binding = DataBindingUtil.bind(v); } public ViewDataBinding getBinding() { return binding; } }

问题 Which context should I be using when I use a SharedPreference within a RecyclerView adapter? This is confusing as when during the default one, context in val mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(context) appears as an unresolved reference. class MyRVAdapter(private val myString: ArrayList<String>): RecyclerView.Adapter<MyRVAdapter.MyViewHolder>() { private val typeA = 1 private val typeB = 2 override fun onCreateViewHolder(parent: ViewGroup, type: Int):

问题 I have been struggling to stop an index out of bounds exception crash every single time I do a search in a searchview. I tried a couple of things listed online : on search getting array out of index bound exception https://www.codeproject.com/Questions/1040119/Android-app-is-crashing-with-Index-out-of-range-is but nothing helped so far. The issue is something specific to my code, just can't figure out what's the issue. Here's my crash report: E/AndroidRuntime: FATAL EXCEPTION: main Process:

问题 My purpose is a list in a list like this: -alllist-------- ----row--------- ----row--------- -----(list)----- -------textview -------textview ---row--------- -----(list)---- ..... MainAdapter Class is working fine with other elements but PlaceAdapter is adding only the first (or last, I couldn't figure) item to the 'nested' list. What is the problem? MainAdapter: @Override public View getView(int position, View convertView, ViewGroup parent) { PlaceHolder placeHolder = null; if (convertView =

问题 I would like to create an deferred loading adapter for use with a Gallery widget. That is to say getView() returns an ImageView immediately, and later some other mechanism will asynchronously call its setImageBitmap() method. I did this by creating a "lazy" ImageView that extends ImageView . public class GalleryImageView extends ImageView { // ... other stuff here ... public void setImage(final Looper looper, final int position) { final Uri uri = looper.get(position); final String path =

问题 I would like to create an deferred loading adapter for use with a Gallery widget. That is to say getView() returns an ImageView immediately, and later some other mechanism will asynchronously call its setImageBitmap() method. I did this by creating a "lazy" ImageView that extends ImageView . public class GalleryImageView extends ImageView { // ... other stuff here ... public void setImage(final Looper looper, final int position) { final Uri uri = looper.get(position); final String path =

问题 I wrote a code to display images, button & texts dynamically in a ListView. So ListView load the button. I want to delete the selected item in ListView by clicking this button. Adapter class: public class LazyAdapter extends BaseAdapter { private Activity activity; private String[] data; private static LayoutInflater inflater=null; public ImageLoaderLogoUnder imageLoader; public LazyAdapter(Activity a, String[] d) { activity = a; data=d; inflater = (LayoutInflater)activity.getSystemService