Second added item is blank

[ghutchins56]

About this issue

• I'm using add() rather than set() to add items to the ItemAdapter. After adding the first item, the RecyclerView updates correctly, but after adding the second item, its view is present in the list but has no content.
• I made you a collaborator for ghutchins56/GilCash. You should have an invite in your inbox.

Details

• [5.6.0] Used library version
•  Used support library version
• [7.0.4] Used gradle build tools version
• [ Arctic Fox] Used tooling / Android Studio version
•  Other used libraries, potential conflicting libraries

Checklist

• Searched for similar issues
• Checked out the sample application
• Read the README
• Checked out the CHANGELOG
• Checked out the MIGRATION GUIDE

[mikepenz]

@ghutchins56 could you please share some code examples here. It's usually more open to collaborate more openly, so other people can also chime in and help.

[ghutchins56]

I appreciate your prompt reply and suggestion. I made ghutchins56/GilCash public. I apologize for having made it private.

public class MainActivity extends AppCompatActivity {
. . .
@OverRide
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
itemAdapter = new ItemAdapter<>();
FastAdapter fastAdapter = FastAdapter.with(itemAdapter);
RecyclerView itemList = findViewById(R.id.item_list);
itemList.setAdapter(fastAdapter);
itemList.setLayoutManager(new LinearLayoutManager(this));
. . .
}
}

public class SimpleItem extends AbstractItem<SimpleItem.ViewHolder> {
private final String date;

public SimpleItem(String date) {
    this.date = date;
}

@Override
public int getType() {
    return R.id.simple_item;
}

@Override
public int getLayoutRes() {
    return R.layout.simple_item;
}

@NonNull
@Override
public ViewHolder getViewHolder(@NonNull View view) {
    return new ViewHolder(view);
}

protected static class ViewHolder extends FastAdapter.ViewHolder<SimpleItem> {
    TextView date;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        date = itemView.findViewById(R.id.date);
    }

    @Override
    public void bindView(@NonNull SimpleItem item, @NonNull List<?> list) {
        date.setText(item.date);
    }

    @Override
    public void unbindView(@NonNull SimpleItem item) {
        date.setText(null);
    }
}

}

[mikepenz]

I'll need to take a closer look at this. on the first look at the code I don't see anything immediately wrong.

Have you had the chance to build and try out the sample application? Which includes a lot of different ways to use the library.

[mikepenz]

One thing I see which may cause problems (unrelated to this library though).

Your RecyclerView is wrap_content so it may be wrongly sized: https://github.com/ghutchins56/GilCash/blob/master/app/src/main/res/layout/activity_main.xml#L12

You may wanna use match_parent instead. or align it fully in the layout

app:layout_constraintBottom_toTopOf="@id/add_item"

Don't forget to alignt he button also to the bottom:

    <ImageButton
        android:id="@+id/add_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:contentDescription="@string/add_item"
        android:minHeight="48dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/item_list"
        app:layout_constraintBottom_toBottomOf="@id/add_item"
        app:srcCompat="@drawable/icon_add" />
        ```

[ghutchins56]

I appreciate the suggestions and will try them. I installed the sample app from the Play Store and used the simple item example without any problems. I'll try building the sample app project.

[ghutchins56]

Your suggestion about the RecyclerView and wrap_content got me on the right track. I also changed the height of simple_item from match_parent to wrap_content. This last change fixed the rest of the problem. As you said, this was not a problem with the FastAdapter library.