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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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32
app/src/main/java/eu/faircode/email/AdapterAttachment.java
View File

@@ -38,7 +38,11 @@ import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.core.content.FileProvider;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.OnLifecycleEvent;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import androidx.preference.PreferenceManager;
import androidx.recyclerview.widget.DiffUtil;
@@ -55,9 +59,11 @@ import java.util.Comparator;
import java.util.List;
public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.ViewHolder> {
private Fragment parentFragment;
private Context context;
private LayoutInflater inflater;
private LifecycleOwner owner;
private LayoutInflater inflater;
private boolean readonly;
private boolean debug;
@@ -277,14 +283,28 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
}
}
AdapterAttachment(Context context, LifecycleOwner owner, boolean readonly) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
this.context = context;
this.inflater = LayoutInflater.from(context);
this.owner = owner;
AdapterAttachment(Fragment parentFragment, boolean readonly) {
this.parentFragment = parentFragment;
this.readonly = readonly;
this.context = parentFragment.getContext();
this.owner = parentFragment.getViewLifecycleOwner();
this.inflater = LayoutInflater.from(context);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
this.debug = prefs.getBoolean("debug", false);
setHasStableIds(true);
owner.getLifecycle().addObserver(new LifecycleObserver() {
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroyed() {
Log.i(AdapterAttachment.this + " parent destroyed");
AdapterAttachment.this.parentFragment = null;
AdapterAttachment.this.context = null;
AdapterAttachment.this.owner = null;
}
});
}
public void set(@NonNull List<EntityAttachment> attachments) {