recycler-adapter

问题 I am trying to get a TextView value out of the selected item within the RecyclerView and send this value to an other activity . My RecyclerView layout file has two TextViews, one for the firstname and the lastname and the other one for the email . i found that recyclerview doesnt support some functionality like LIST VIEW , this is my code if any one can suggest for me something please. import android.content.Context; import android.content.Intent; import android.os.Handler; import android

问题 I have generic class public abstract class BaseAdapter<T> extends RecyclerView.Adapter { private List<T> itemsList = new ArrayList<>(); //other override methods @Override public long getItemId(int position) { return position; } } What is the correct way to implementing getItemId()? I think that return position like in many example is not correct. 回答1: Create a base interface that has a method that returns a type long eg. interface BaseInterface{ long getId(); } Change abstract class

问题 I have this code and everytime I tried to run it ..the application is not running not error but not running can anyone please help me to determine what is the reason for getting this kind of problem. because I'm doing RecyclerView with CardView in fragment I have this problem almost a week :( this is my code: public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.MyViewHolder> { private Context mContext ; private List<Book> mData ; public RecyclerViewAdapter(Context

问题 How to pass data from recyclerview adapter to fragment and what i have to write the code in fragment to receive data.I have already check the links in this website but unfortunately unable to get correct code. Below is the code ExampleAdapter.Java public class ExampleAdapter extends RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder> { private ArrayList<ExampleItem> mExampleList; @NonNull @Override public ExampleViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { View v

问题 I am set MaterialTextView inside RelativeLayout and set RelativeLayout size programmatically different size for every device. Then i have using ViewTreeObserver to set setMaxLines and setEllipsize in MaterialTextView but i am facing some problem show the text in MaterialTextView using RecyclerView.Adapter. I am using load more RecyclerView i am getting all data then after show text automatically in list and also notify data adapter then show text. not showing text inside MaterialTextView in

问题 I am set MaterialTextView inside RelativeLayout and set RelativeLayout size programmatically different size for every device. Then i have using ViewTreeObserver to set setMaxLines and setEllipsize in MaterialTextView but i am facing some problem show the text in MaterialTextView using RecyclerView.Adapter. I am using load more RecyclerView i am getting all data then after show text automatically in list and also notify data adapter then show text. not showing text inside MaterialTextView in

问题 I'm updating my app to use Firebase's Firestore database. I'm struggling to get the app to show the data that's been retrieved from the database. The data is retrieved ok, but doesn't show up. By setting breakpoints, I've established that the ViewHolder isn't being bound to the adapter at any point. The data is being shown in a Fragment. The Fragment layout is (I've taken out irrelevant stuff like padding, sizes etc): <android.support.constraint.ConstraintLayout android:id="@+id/layout_charts

问题 Recycler View Inconsistency Detected error, coming while scrolling fast or scrolling while loading more items.. FATAL EXCEPTION: main Process: com.pratap.endlessrecyclerview, PID: 21997 java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder{56a082c position=40 id=-1, oldPos=39, pLpos:39 scrap [attachedScrap] tmpDetached no parent} at android.support.v7.widget.RecyclerView$Recycler.validateViewHolderForOffsetPosition(RecyclerView.java:4251)

问题 and thank you for your attention to my request. I'm a newbie on Andorid Studio and I'm developing an App, it has to show a list of Events, Courses and News. There is a DrawerLayout which allow navigating into Event's, course's and news's area, each area has each specific RecyclerView, but into the home activity, I have to show all the items (Event, Course and News). I create an Adapter for each item (because they have different properties) and each section (fragment) works properly but now I

问题 I will try to be more specific about my issue. I start saying I've already seen this question that shows the same kind of problem, I guess, but I didn't really understand the right solution. Note: I have created the drawer activity and all navigation dependencies from a template in creating new project step Initially, I found that when, in ShowProfileFragment, I tried to update the header of the navigation drawer, the same issue happened, so when I put that if statement (see code below) to