android-recyclerview

问题 I have a problem with RecyclerView , I have RecyclerView which has a radio button and few other views in each row item, What I wanted exactly is, when a RadioButton is checked by user I want to uncheck other RadioButton (if anything is checked earlier). Since it is a Recyclerview I cannot use radiogroup. In the adapter onBindViewHolder I write this listener for each radio button holder.radioButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {

问题 I am implementing endless recycler view . Data is getting fine from server aslo scroll down getting down and show it. But on scroll it automatically comes to top again and again. I implemented number of solutions but doesn't work. here is bit of code. private int postNo = 15; public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); if (!lastTime) { if (dy > 0) { // check for scroll down visibleItemCount = layoutManager.getChildCount();

问题 I am implementing endless recycler view . Data is getting fine from server aslo scroll down getting down and show it. But on scroll it automatically comes to top again and again. I implemented number of solutions but doesn't work. here is bit of code. private int postNo = 15; public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); if (!lastTime) { if (dy > 0) { // check for scroll down visibleItemCount = layoutManager.getChildCount();

问题 I have an imageview in row.xml and I set a picture for it in xml layout. But when I use that in adapter (onbindviewholder method) Not show any image . But when I set image resource in onbindviewholder that works and show the image !!! What is wrong in the first method ??? 回答1: use holder.Image.setImageResource(); or you can use Glide or Picasso library to load images. and also return the size of your list. @Override public int getItemCount() { return contacts.size(); } 回答2: public class

问题 I have a ListFragment with some ListItems. In one ListItem I have some Views and also a RecyclerView with CardViews. In the CardView is a ImageView. I want to use the RecyclerView to have some pictures in it and I want to scroll the pictures. I also want to zoom the pictures with a two finger-gesture. (Would be nice if someone knows a good step by step tutorial therefor). But I also want to click and longclick on the pictures. I need the click and longclick in my ListArrayAdapter or in my

问题 Hi I am trying to add a new item to my chat, I use RXJava2, to make call to my REST API to get the chat data, with this nested json response. But I get an NullPointer when I try to add a new item to the Arraylist (Send new message): 09-08 13:35:14.529 2869-2869/com.jonathan.myapp E/AndroidRuntime: FATAL EXCEPTION: main Process: com.jonathan.myapp, PID: 2869 java.lang.NullPointerException: Attempt to invoke virtual method 'void com.jonathan.myapp.models.ChatMessageUser.setUserId(java.lang

问题 I'm looking forward to Display the images stored in Firebase Storage with refrence from Firebase Database. Below is my Firebase Data Structure and my Storage Structure is Below is my code of Recycle adapter, I'm using to retrive images from Firebase public class SubjectBooksAdapter extends RecyclerView.Adapter<SubjectBooksAdapter.MyViewHolder> { ArrayList<Books> bookslist; CardView cv; FirebaseAuth fauth; FirebaseDatabase database; DatabaseReference dbreference; Books b; public

问题 I am attempting to pull data from my parse server and display an image and text within a RecyclerView of CardViews. I have encountered a few issues, some of which may not have been corrected appropriately, so please feel free to correct any novice code you find below outside of my two current issues. Finally my two issues are. The data does not display initially. I have 3 tabs in a ViewPager and I have to swipe over twice in order for it to display. If I'm on tab 1 the data doesn't appear

问题 i tried to retrieving data from Firebase Realtime Database to Recycler-view. i already create Modul class called Ph.java and adapter called PhAdapter.java. but, i am so confused to call the adapter on MainActivity.java. here's my code :) Ph.Class public class Ph { public String date; public String nilai; public String time; public Ph(){ } public String getDate() { return date; } public void setDate(String date) { this.date = date; } public String getNilai() { return nilai; } public void

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