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Prevent crash

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M66B
2019-01-14 07:21:48 +00:00
parent f9b96add3d
commit 0c4f442be0
2 changed files with 22 additions and 18 deletions
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27
app/src/main/java/eu/faircode/email/ViewModelMessages.java
View File

@@ -34,23 +34,30 @@ import androidx.paging.PagedList;
public class ViewModelMessages extends ViewModel {
private Map<Boolean, LiveData<PagedList<TupleMessageEx>>> messages = new HashMap<>();
void setMessages(AdapterMessage.ViewType viewType, LiveData<PagedList<TupleMessageEx>> messages) {
boolean thread = (viewType == AdapterMessage.ViewType.THREAD);
void setMessages(AdapterMessage.ViewType viewType, LifecycleOwner owner, final LiveData<PagedList<TupleMessageEx>> messages) {
final boolean thread = (viewType == AdapterMessage.ViewType.THREAD);
this.messages.put(thread, messages);
// Keep list up-to-date for previous/next navigation
messages.observe(owner, new Observer<PagedList<TupleMessageEx>>() {
@Override
public void onChanged(PagedList<TupleMessageEx> messages) {
}
});
owner.getLifecycle().addObserver(new LifecycleObserver() {
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroyed() {
Log.i("Removed model thread=" + thread);
ViewModelMessages.this.messages.remove(thread);
}
});
}
void observe(AdapterMessage.ViewType viewType, LifecycleOwner owner, Observer<PagedList<TupleMessageEx>> observer) {
if (owner.getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED)) {
final boolean thread = (viewType == AdapterMessage.ViewType.THREAD);
messages.get(thread).observe(owner, observer);
owner.getLifecycle().addObserver(new LifecycleObserver() {
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroyed() {
Log.i("Removed model thread=" + thread);
messages.remove(thread);
}
});
}
}