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Code Issues Packages Projects Releases Wiki Activity

Safely reference parent fragment from adapters

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This commit is contained in:
M66B
2019-07-01 09:30:07 +02:00
parent 0d5b1e2bac
commit 72db63e979
26 changed files with 303 additions and 89 deletions
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23
app/src/main/java/eu/faircode/email/AdapterOrder.java
View File

@@ -26,7 +26,11 @@ import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.OnLifecycleEvent;
import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.ListUpdateCallback;
import androidx.recyclerview.widget.RecyclerView;
@@ -37,6 +41,7 @@ import java.util.List;
import java.util.Objects;
public class AdapterOrder extends RecyclerView.Adapter<AdapterOrder.ViewHolder> {
private Fragment parentFragment;
private Context context;
private LifecycleOwner owner;
private LayoutInflater inflater;
@@ -63,11 +68,23 @@ public class AdapterOrder extends RecyclerView.Adapter<AdapterOrder.ViewHolder>
}
}
AdapterOrder(Context context, LifecycleOwner owner) {
this.context = context;
this.owner = owner;
AdapterOrder(Fragment parentFragment) {
this.parentFragment = parentFragment;
this.context = parentFragment.getContext();
this.owner = parentFragment.getViewLifecycleOwner();
this.inflater = LayoutInflater.from(context);
setHasStableIds(true);
owner.getLifecycle().addObserver(new LifecycleObserver() {
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroyed() {
Log.i(AdapterOrder.this + " parent destroyed");
AdapterOrder.this.parentFragment = null;
AdapterOrder.this.context = null;
AdapterOrder.this.owner = null;
}
});
}
public void set(@NonNull List<EntityOrder> items) {