android-recyclerview

问题 So far, I have been able to display my Firebase records for node maintenance in an Android ListView . However, there is one part of these records that I wish to update. When clicking on a record, an AlertDialog dialog will appear with a spinner ( spinnerProgress ). By changing the option on this spinner and clicking an OK 'button', then the ListView and of course the Firebase database will update. * EDIT * So, I have progressed with this problem a bit. When I click my buttonUpdateProgress ,

问题 I am working with a recyclerView and i succeeded in inflating two views but each view content comes from different json data types. i tried passing the two datatypes in the adapter but they are not properly binded source code public class SimpleStringRecyclerViewAdapter : RecyclerView.Adapter { private Article[] mValues; private List<YouTubeItem> mValues2; Context context; public SimpleStringRecyclerViewAdapter(Context context, Article[] items, List<YouTubeItem> item ) { this.context =

问题 I am attempting to create an animation in my RecyclerView rows with a Helper class that extends ItemTouchHelper.Callback . The default "swipe" behaviour with ItemTouchHelper is that if a row is swiped with sufficient velocity, it disappears from view (i.e. swipe-to-dimiss). In my case, I want to create an animation that causes the row to bounce straight back if such an event takes place. I have been able to create a ValueAnimator that animates the row back into view if it is swiped off screen

问题 I'm tying to parse JSON in recyclerview. App compiles fine but it's outputting empty/blank screen BlogAdapter.kt class BlogAdapter(private val blogList: List<Blog>) : RecyclerView.Adapter<BlogAdapter.ViewHolder>() { override fun getItemCount()= blogList.size private var mContext: Context? = null override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { this.mContext=parent.context; return ViewHolder( LayoutInflater.from(parent.context).inflate( R.layout.character_item,

问题 After doing many hit and try method and observing other stackoverflow code, I was able to send data to next activity. I want to know: Is it safe to call cursor.moveToPosition twice in onBindViewHolder method. public class recyclerViewSongAdapter extends RecyclerView.Adapter<recyclerViewSongAdapter.MyViewHolder> { private final Activity callingActivity; private final Cursor songCursor; public recyclerViewSongAdapter(Activity activity, Cursor cursor) { callingActivity = activity; songCursor =

问题 public class AllUsersActivity extends AppCompatActivity { private Toolbar mToolbar; private RecyclerView mUserRecycler; private DatabaseReference mAllUsersDatabase; private DatabaseReference mUserRef; private FirebaseAuth mAuth; private FirebaseUser mCurrentUser; FirebaseRecyclerAdapter<Users, AllUsersViewHolder> firebaseRecyclerAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_all_users); mToolbar =

问题 I am using this library to make a expandable RecyclerView I made my own version of it so I can define the header but It's giving me I think I made something wrong because It's giving me this error. What I want is: a way to make my own header layout. Is there a way to populate the adapter of the RecyclerView so that I don't have to create a new adapter file every time I want to implement the RecyclerView. How to set my one item or more to be expanded as I open the activity. My version of

问题 I am trying to setup onClickListeners inside my ViewHolder class, but I need the position of each. How can I pass the position from onBindViewHolder to my ViewHolder class? @NonNull @Override public AdapterAllComments.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.model_rv_allcomments_container, viewGroup, false); return new ViewHolder(view); } @Override public void onBindViewHolder(@NonNull

问题 I'm setting up a RecyclerView that uses a ListAdapter to calculate animations on changes. The RecyclerView is receiving data through a ViewModel that fetches a list via Firebase. The items shown are of the Mensa kind. A Mensa item can change its visibility, its occupancy, or the distance displayed. I want to implement two buttons that favorite/hide items, therefore changing their position in the list. Two buttons in every item allow the user to favorite or hide an item. This will move an item

问题 I have a Switch button in toolbar and two TextViews in RecyclerView . I want to manage the visibility of one of the TextViews in RecyclerView based on the state of Switch . I have added OnCheckedChangeListener to the Switch and am setting a boolean FLAG to TRUE of FALSE here. This FLAG value is read in onBindViewHolder(-,-) method of the Adapter and I am setting the View visibility to VISIBLE/GONE based on the FLAG . In MainActivity: Switch switchView; private boolean switchFlag; public