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Code Issues Projects Releases Wiki Activity

[android] fix IllegalStateException when creating attachments

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Injecting the non-singleton AttachmentCreator keeps an instance around
that gets re-used with a different ViewModel.
When backing out without sending or cancelling the attachments,
we don't reset the state which leads us into an illegal state.
This commit is contained in:
Torsten Grote
2019-11-05 09:41:01 -03:00
parent bded1edb2b
commit 61d3fe9055
2 changed files with 14 additions and 5 deletions
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15
briar-android/src/main/java/org/briarproject/briar/android/attachment/AttachmentCreatorImpl.java
View File

@@ -76,8 +76,12 @@ class AttachmentCreatorImpl implements AttachmentCreator {
@UiThread
public LiveData<AttachmentResult> storeAttachments(
LiveData<GroupId> groupId, Collection<Uri> newUris) {
if (task != null || result != null || !uris.isEmpty())
if (task != null || result != null || !uris.isEmpty()) {
if (task != null) LOG.warning("Task already exists!");
if (result != null) LOG.warning("Result already exists!");
if (!uris.isEmpty()) LOG.warning("Uris available: " + uris);
throw new IllegalStateException();
}
MutableLiveData<AttachmentResult> result = new MutableLiveData<>();
this.result = result;
uris.addAll(newUris);
@@ -96,8 +100,12 @@ class AttachmentCreatorImpl implements AttachmentCreator {
@UiThread
public LiveData<AttachmentResult> getLiveAttachments() {
MutableLiveData<AttachmentResult> result = this.result;
if (task == null || result == null || uris.isEmpty())
if (task == null || result == null || uris.isEmpty()) {
if (task == null) LOG.warning("No Task!");
if (result == null) LOG.warning("No Result!");
if (uris.isEmpty()) LOG.warning("Uris empty!");
throw new IllegalStateException();
}
// A task is already running. It will update the result LiveData.
// So nothing more to do here.
return result;
@@ -174,8 +182,7 @@ class AttachmentCreatorImpl implements AttachmentCreator {
@Override
@UiThread
public void cancel() {
if (task == null) throw new AssertionError();
task.cancel();
if (task != null) task.cancel();
deleteUnsentAttachments();
resetState();
}

4
briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationViewModel.java
View File

@@ -133,7 +133,7 @@ public class ConversationViewModel extends AndroidViewModel
@Override
protected void onCleared() {
super.onCleared();
attachmentCreator.deleteUnsentAttachments();
attachmentCreator.cancel(); // also deletes unsent attachments
eventBus.removeListener(this);
}
@@ -274,6 +274,7 @@ public class ConversationViewModel extends AndroidViewModel
settingsManager.mergeSettings(settings, SETTINGS_NAMESPACE);
}
@UiThread
private void createMessage(GroupId groupId, @Nullable String text,
List<AttachmentHeader> headers, long timestamp,
boolean hasImageSupport) {
@@ -292,6 +293,7 @@ public class ConversationViewModel extends AndroidViewModel
}
}
@UiThread
private void storeMessage(PrivateMessage m) {
attachmentCreator.onAttachmentsSent(m.getMessage().getId());
dbExecutor.execute(() -> {