android-recyclerview

问题 I have a use case where I need a reference to the parent RecyclerView from inside the adapter, specifically inside the onBindViewHolder method. So far what I am doing is assigning it to a private class member in the onCreateViewHolder method passing along the viewGroup parent arg like so: private ViewGroup mParent; @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { // inflater logic. mParent = parent; } And referencing the parent RecyclerView in onBindViewHolder

问题 I have a recyclerView with n items. Each item is expandable onCLick of it. I want my item to expand as well as move to the top onCLick. Suppose if I click third item then it should move to the first item position and then it will expand and scroll should stop. I have manage to expand the RecyclerView with animation, but it's not moving at the top position. I also tried scrollToPosition, but it didn't work. Below is my Activity class: public class MainActivity extends AppCompatActivity {

问题 I have a recyclerView with n items. Each item is expandable onCLick of it. I want my item to expand as well as move to the top onCLick. Suppose if I click third item then it should move to the first item position and then it will expand and scroll should stop. I have manage to expand the RecyclerView with animation, but it's not moving at the top position. I also tried scrollToPosition, but it didn't work. Below is my Activity class: public class MainActivity extends AppCompatActivity {

问题 I have to show a list of airports of the world, and user has to choose one of them. So I have made a recyclerview: RecyclerView recyclerView = (RecyclerView)rootView.findViewById(R.id.recyclerview); SearchView searchView = (SearchView)rootView.findViewById(R.id.searchview); recyclerView.setHasFixedSize(true); recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); final AirportAdapter adapter = new AirportAdapter(airports,getActivity()); recyclerView.setAdapter(adapter);

问题 I have to show a list of airports of the world, and user has to choose one of them. So I have made a recyclerview: RecyclerView recyclerView = (RecyclerView)rootView.findViewById(R.id.recyclerview); SearchView searchView = (SearchView)rootView.findViewById(R.id.searchview); recyclerView.setHasFixedSize(true); recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); final AirportAdapter adapter = new AirportAdapter(airports,getActivity()); recyclerView.setAdapter(adapter);

问题 The RecyclerView when launched shows all the data instead of showing data of a specific id. I am using Room database and as I understand the problem is when the ViewModel is getting initialized, the repository gets all the colors.. I couldn't figure out how to code in Repository, so that when the ViewModel is initialized it only gets data of specific ids instead of all data. In one of the answers in stack it mentions something about using "SwitchMap"...but I am new to Android so not sure if

问题 The RecyclerView when launched shows all the data instead of showing data of a specific id. I am using Room database and as I understand the problem is when the ViewModel is getting initialized, the repository gets all the colors.. I couldn't figure out how to code in Repository, so that when the ViewModel is initialized it only gets data of specific ids instead of all data. In one of the answers in stack it mentions something about using "SwitchMap"...but I am new to Android so not sure if

问题 The RecyclerView when launched shows all the data instead of showing data of a specific id. I am using Room database and as I understand the problem is when the ViewModel is getting initialized, the repository gets all the colors.. I couldn't figure out how to code in Repository, so that when the ViewModel is initialized it only gets data of specific ids instead of all data. In one of the answers in stack it mentions something about using "SwitchMap"...but I am new to Android so not sure if

问题 I'm trying to design a page where address are stored in recycler view -> cardview. When the user clicks the add address button from the Activity A the user is navigated to the add address page in Activity B. Here the user can input customer name, address line 1 and address line two. Similarly, When the user clicks the edit address button from the Activity A**(data in activity A is passed to activity B)** the user is navigated to the edit address page in Activity B. Here the user can input

问题 I'm trying to design a page where address are stored in recycler view -> cardview. When the user clicks the add address button from the Activity A the user is navigated to the add address page in Activity B. Here the user can input customer name, address line 1 and address line two. Similarly, When the user clicks the edit address button from the Activity A**(data in activity A is passed to activity B)** the user is navigated to the edit address page in Activity B. Here the user can input