android-recyclerview

问题 I want to pass the current ItemID position of Adapter to another class.But the problem is whenever I toggle the position from the next class It always starts from zero position. I've used the getItemId to get the position of card but the problem is whenever I use The position in IngameWrkfunction to get the data ,it always fetch the data from the initial point not from the current page. RecyclerAdapterClass package com.example.apptuzzle; import android.content.Context; import android.content

问题 I have a fragment that replaces FrameLayout. In this fragment, if I had only RecyclerView, I could set its height to match_parent and everything could work well. However, if I have multiple elements that need to be over the top of RecyclerView, the RecyclerView cannot be fit into the screen. Code for the first scenario: <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools=

问题 I have a recylcerView calles "Notes", I'm trying to add an new recylerview called "Assignments" wich will be created inside the notes recylerview item. When I click on a recylerview item (notes) it send me to ClassworkActivity in wich the assignments' recyclerview will be added to it. So I want to add the assignment recyclerview as a child of the notes recyclerview. Here's what I tried : final AssignmentAdapter assignmentAdapter=new AssignmentAdapter(assignlist,this); recyclerView.setAdapter

问题 I have a recylcerView calles "Notes", I'm trying to add an new recylerview called "Assignments" wich will be created inside the notes recylerview item. When I click on a recylerview item (notes) it send me to ClassworkActivity in wich the assignments' recyclerview will be added to it. So I want to add the assignment recyclerview as a child of the notes recyclerview. Here's what I tried : final AssignmentAdapter assignmentAdapter=new AssignmentAdapter(assignlist,this); recyclerView.setAdapter

问题 I want to deserialize a local json file using Gson to create a recyclerview. However I get an IllegalStateException on below line. val homeFeed = gson.fromJson(json, HomeFeed::class.java) My json file is saved under an assets folder and believe the program reads the data fine but somehow cannot convert it into my HomeFeed model object. Error below: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2 path $

问题 I want to deserialize a local json file using Gson to create a recyclerview. However I get an IllegalStateException on below line. val homeFeed = gson.fromJson(json, HomeFeed::class.java) My json file is saved under an assets folder and believe the program reads the data fine but somehow cannot convert it into my HomeFeed model object. Error below: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2 path $

问题 I have got a problem in my code: I cannot see a properly clicked item in the new activity "CrimePagerActivity" from RecycleView . I can see another item from the list in this activity ( ViewPager ). I have found the issue here, in this row of code: Intent intent = CrimePagerActivity.newIntent(getActivity(), mCrime.getId()); I get an incorrect item from mCrime.getId() . Unfortunately, I do not know how to fix it. Maybe someone can help me? My code and some of my layouts are below. Crime.java

问题 This is an extension to Kotlin using Gson to deserialize local json file that I posted earlier. I want NewsFragment.kt to instantiate an adapter but am unable to access to the recyclerview id worldnews. I get "java.lang.IllegalStateException: worldnews must not be null" when the program tries to execute the code below: activity?.runOnUiThread { worldnews.adapter = MainAdapter(homeFeed) } NewsFragment.kt: class NewsFragment : Fragment() { var arr = arrayListOf<String>() override fun onCreate

问题 Image I have an EditText which adds items to this RecyclerView and to the Realm DB. That works fine. The problem is that I don't know how to remove those items from both the RecyclerView and from the Realm DB. Should this be done on the Fragment or on the adapter? And how? Thanks! There is an image on top showing a screenshot of the app. Here is the Fragment where the RecyclerView is: public class FragmentMyList extends Fragment{ private RecyclerView recyclerView; private EditText editTxt;

问题 Image I have an EditText which adds items to this RecyclerView and to the Realm DB. That works fine. The problem is that I don't know how to remove those items from both the RecyclerView and from the Realm DB. Should this be done on the Fragment or on the adapter? And how? Thanks! There is an image on top showing a screenshot of the app. Here is the Fragment where the RecyclerView is: public class FragmentMyList extends Fragment{ private RecyclerView recyclerView; private EditText editTxt;