Improve UI for shard return

briar-android/src/main/java/org/briarproject/briar/android/activity/ActivityComponent.java

@@ -87,6 +87,7 @@ import org.briarproject.briar.android.socialbackup.DistributedBackupActivity;
 import org.briarproject.briar.android.socialbackup.ExistingBackupFragment;
 import org.briarproject.briar.android.socialbackup.recover.CustodianReturnShardActivity;
 import org.briarproject.briar.android.socialbackup.recover.CustodianReturnShardFragment;
+import org.briarproject.briar.android.socialbackup.recover.CustodianReturnShardSuccessFragment;
 import org.briarproject.briar.android.socialbackup.recover.OwnerRecoveryModeExplainerFragment;
 import org.briarproject.briar.android.socialbackup.recover.OwnerReturnShardActivity;
 import org.briarproject.briar.android.socialbackup.recover.OwnerReturnShardFragment;
@@ -293,4 +294,6 @@ public interface ActivityComponent {
 	void inject(CustodianReturnShardFragment custodianReturnShardFragment);
 
 	void inject(OwnerReturnShardFragment ownerReturnShardFragment);
+
+	void inject(CustodianReturnShardSuccessFragment custodianReturnShardSuccessFragment);
 }

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/DistributedBackupActivity.java

@@ -61,7 +61,7 @@ public class DistributedBackupActivity extends BriarActivity implements
 	@Override
 	public void contactsSelected(Collection<ContactId> contacts) {
 		Toast.makeText(this,
-				String.format("selected %d contacts", contacts.size()),
+				String.format("Selected %d contacts", contacts.size()),
 				Toast.LENGTH_SHORT).show();
 		custodians = contacts;
 		ThresholdSelectorFragment fragment =

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/CustodianReturnShardActivity.java

@@ -7,6 +7,7 @@ import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.activity.BriarActivity;
 import org.briarproject.briar.android.fragment.BaseFragment;
 import org.briarproject.briar.android.socialbackup.CustodianRecoveryModeExplainerFragment;
+import org.briarproject.briar.android.socialbackup.ShardsSentFragment;
 import org.briarproject.briar.api.socialbackup.recovery.CustodianTask;
 
 import java.util.logging.Logger;
@@ -59,13 +60,17 @@ public class CustodianReturnShardActivity extends BriarActivity
 		viewModel.getShowCameraFragment().observeEvent(this, show -> {
 			if (show) showCameraFragment();
 		});
+		viewModel.getSuccessDismissed().observeEvent(this, dismissed -> {
+			if (dismissed) finish();
+		});
 		viewModel.getState()
 				.observe(this, this::onReturnShardStateChanged);
 	}
 
 	private void onReturnShardStateChanged(CustodianTask.State state) {
         if (state instanceof CustodianTask.State.Success) {
-
+	        CustodianReturnShardSuccessFragment fragment = new CustodianReturnShardSuccessFragment();
+	        showNextFragment(fragment);
         }
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/CustodianReturnShardSuccessFragment.java

@@ -0,0 +1,59 @@
+package org.briarproject.briar.android.socialbackup.recover;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
+import org.briarproject.briar.R;
+import org.briarproject.briar.android.activity.ActivityComponent;
+import org.briarproject.briar.android.fragment.BaseFragment;
+
+import javax.inject.Inject;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.ViewModelProvider;
+
+@MethodsNotNullByDefault
+@ParametersNotNullByDefault
+public class CustodianReturnShardSuccessFragment extends
+		BaseFragment {
+
+	public static final String TAG =
+			CustodianReturnShardFragment.class.getName();
+
+	@Inject
+	ViewModelProvider.Factory viewModelFactory;
+
+	private CustodianReturnShardViewModel viewModel;
+
+	@Override
+	public void injectFragment(ActivityComponent component) {
+		component.inject(this);
+		viewModel = new ViewModelProvider(requireActivity(), viewModelFactory)
+				.get(CustodianReturnShardViewModel.class);
+	}
+
+	@Nullable
+	@Override
+	public View onCreateView(@NonNull LayoutInflater inflater,
+			@Nullable ViewGroup container,
+			@Nullable Bundle savedInstanceState) {
+		View view = inflater.inflate(R.layout.fragment_recovery_custodian_done,
+				container, false);
+
+		Button button = view.findViewById(R.id.button);
+		button.setOnClickListener(e -> viewModel.onSuccessDismissed());
+
+		return view;
+	}
+
+	@Override
+	public String getUniqueTag() {
+		return TAG;
+	}
+}

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/CustodianReturnShardViewModel.java

@@ -48,6 +48,8 @@ public class CustodianReturnShardViewModel extends AndroidViewModel
 	private boolean qrCodeRead = false;
 	private final MutableLiveEvent<Boolean> showCameraFragment =
 			new MutableLiveEvent<>();
+	private final MutableLiveEvent<Boolean> successDismissed =
+			new MutableLiveEvent<>();
 	private final MutableLiveData<CustodianTask.State> state =
 			new MutableLiveData<>();
 	final QrCodeDecoder qrCodeDecoder;
@@ -100,6 +102,12 @@ public class CustodianReturnShardViewModel extends AndroidViewModel
 		showCameraFragment.setEvent(true);
 	}
 
+	@UiThread
+	public void onSuccessDismissed() {
+	    successDismissed.setEvent(true);
+	}
+
+
 	QrCodeDecoder getQrCodeDecoder() {
 		return qrCodeDecoder;
 	}
@@ -108,6 +116,9 @@ public class CustodianReturnShardViewModel extends AndroidViewModel
 		return showCameraFragment;
 	}
 
+	LiveEvent<Boolean> getSuccessDismissed() {
+		return successDismissed;
+	}
 	LiveData<CustodianTask.State> getState() {
 		return state;
 	}

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/OwnerReturnShardActivity.java

@@ -10,7 +10,6 @@ import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.activity.BaseActivity;
-import org.briarproject.briar.android.contact.add.nearby.AddNearbyContactErrorFragment;
 import org.briarproject.briar.android.fragment.BaseFragment;
 import org.briarproject.briar.api.socialbackup.recovery.SecretOwnerTask;
 
@@ -23,7 +22,6 @@ import androidx.fragment.app.FragmentManager;
 import androidx.lifecycle.ViewModelProvider;
 
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
-import static android.widget.Toast.LENGTH_LONG;
 import static java.util.logging.Logger.getLogger;
 
 @MethodsNotNullByDefault
@@ -78,10 +76,6 @@ public class OwnerReturnShardActivity extends BaseActivity
 		if (state == null) {
 			showInitialFragment(new OwnerRecoveryModeExplainerFragment());
 		}
-//		viewModel.getCheckPermissions().observeEvent(this, check ->
-//				permissionManager.checkPermissions());
-//		viewModel.getRequestBluetoothDiscoverable().observeEvent(this, r ->
-//				requestBluetoothDiscoverable()); // never false
 		viewModel.getShowQrCodeFragment().observeEvent(this, show -> {
 			if (show) showQrCodeFragment();
 		});
@@ -117,6 +111,7 @@ public class OwnerReturnShardActivity extends BaseActivity
 
 	@Override
 	public void onBackPressed() {
+		// TODO should we cancel the return shard task here?
 		if (viewModel.getState()
 				.getValue() instanceof SecretOwnerTask.State.Failure) {
 			// re-create this activity when going back in failed state
@@ -141,47 +136,23 @@ public class OwnerReturnShardActivity extends BaseActivity
 	}
 
 	private void onReturnShardStateChanged(SecretOwnerTask.State state) {
-//		if (state instanceof ReturnShardState.SocialBackupExchangeFinished) {
-//			ReturnShardState.SocialBackupExchangeResult result =
-//					((ReturnShardState.SocialBackupExchangeFinished) state).result;
-//			onSocialBackupExchangeResult(result);
-//		} else if (state instanceof ReturnShardState.Failed) {
-//			Boolean qrCodeTooOld =
-//					((ReturnShardState.Failed) state).qrCodeTooOld;
-//			onAddingContactFailed(qrCodeTooOld);
-//		}
-	}
-
-	private void onSocialBackupExchangeResult(
-			ReturnShardState.SocialBackupExchangeResult result) {
-		if (result instanceof ReturnShardState.SocialBackupExchangeResult.Success) {
-//			String text = getString(R.string.contact_added_toast, contactName);
-			Toast.makeText(this, "Shard return successful", LENGTH_LONG).show();
-			supportFinishAfterTransition();
-		} else if (result instanceof ReturnShardState.SocialBackupExchangeResult.Error) {
-			showErrorFragment();
-		} else throw new AssertionError();
-	}
-
-	private void onAddingContactFailed(@Nullable Boolean qrCodeTooOld) {
-		if (qrCodeTooOld == null) {
-			showErrorFragment();
-		} else {
-			String msg;
-			if (qrCodeTooOld) {
-				msg = getString(R.string.qr_code_too_old,
-						getString(R.string.app_name));
-			} else {
-				msg = getString(R.string.qr_code_too_new,
-						getString(R.string.app_name));
-			}
-			showNextFragment(AddNearbyContactErrorFragment.newInstance(msg));
+		if (state instanceof SecretOwnerTask.State.Success) {
+			Toast.makeText(this,
+					"Success - got shard",
+					Toast.LENGTH_SHORT).show();
+			finish();
+		} else if (state instanceof SecretOwnerTask.State.Failure) {
+			Toast.makeText(this,
+					"Shard return failed!",
+					Toast.LENGTH_SHORT).show();
+			finish();
 		}
 	}
 
-	private void showErrorFragment() {
-		showNextFragment(new AddNearbyContactErrorFragment());
-	}
+//	private void showErrorFragment() {
+//		// TODO change this for an appropriate error message fragment
+//		showNextFragment(new AddNearbyContactErrorFragment());
+//	}
 
 	@Override
 	@Deprecated

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/OwnerReturnShardViewModel.java

@@ -136,91 +136,12 @@ class OwnerReturnShardViewModel extends AndroidViewModel implements SecretOwnerT
 
 	@UiThread
 	private void stopListening() {
-		task.cancel();
-//		KeyAgreementTask oldTask = task;
-//		ioExecutor.execute(() -> {
-//			if (oldTask != null) oldTask.stopListening();
-//		});
+		ioExecutor.execute(() -> {
+			task.cancel();
+		});
 	}
 
-//	@Override
-//	public void eventOccurred(Event e) {
-//		if (e instanceof TransportStateEvent) {
-//			TransportStateEvent t = (TransportStateEvent) e;
-//			if (t.getTransportId().equals(BluetoothConstants.ID)) {
-//				if (LOG.isLoggable(INFO)) {
-//					LOG.info("Bluetooth state changed to " + t.getState());
-//				}
-//				showQrCodeFragmentIfAllowed();
-//			} else if (t.getTransportId().equals(LanTcpConstants.ID)) {
-//				if (LOG.isLoggable(INFO)) {
-//					LOG.info("Wifi state changed to " + t.getState());
-//				}
-//				showQrCodeFragmentIfAllowed();
-//			}
-//		} else if (e instanceof KeyAgreementListeningEvent) {
-//			LOG.info("KeyAgreementListeningEvent received");
-//			KeyAgreementListeningEvent event = (KeyAgreementListeningEvent) e;
-//			onLocalPayloadReceived(event.getLocalPayload());
-//		} else if (e instanceof KeyAgreementWaitingEvent) {
-//			LOG.info("KeyAgreementWaitingEvent received");
-//			state.setValue(new ReturnShardState.KeyAgreementWaiting());
-//		} else if (e instanceof KeyAgreementStartedEvent) {
-//			LOG.info("KeyAgreementStartedEvent received");
-//			state.setValue(new ReturnShardState.KeyAgreementStarted());
-//		} else if (e instanceof KeyAgreementFinishedEvent) {
-//			LOG.info("KeyAgreementFinishedEvent received");
-//			KeyAgreementResult result =
-//					((KeyAgreementFinishedEvent) e).getResult();
-//			startContactExchange(result);
-//			state.setValue(new ReturnShardState.SocialBackupExchangeStarted());
-//		} else if (e instanceof KeyAgreementAbortedEvent) {
-//			LOG.info("KeyAgreementAbortedEvent received");
-//			resetPayloadFlags();
-//			state.setValue(new ReturnShardState.Failed());
-//		} else if (e instanceof KeyAgreementFailedEvent) {
-//			LOG.info("KeyAgreementFailedEvent received");
-//			resetPayloadFlags();
-//			state.setValue(new ReturnShardState.Failed());
-//		}
-//	}
 
-	@UiThread
-//	private void startContactExchange(KeyAgreementResult result) {
-//		TransportId t = result.getTransportId();
-//		DuplexTransportConnection conn = result.getConnection();
-//		SecretKey masterKey = result.getMasterKey();
-//		boolean alice = result.wasAlice();
-//		ioExecutor.execute(() -> {
-//			try {
-//				if (sending) {
-//					socialBackupExchangeManager.sendReturnShard(conn, masterKey, alice, returnShardPayload);
-//				} else {
-//					returnShardPayload = socialBackupExchangeManager.receiveReturnShard(conn, masterKey, alice);
-//				}
-//				ReturnShardState.SocialBackupExchangeResult.Success
-//						success =
-//						new ReturnShardState.SocialBackupExchangeResult.Success();
-//				state.postValue(
-//						new ReturnShardState.SocialBackupExchangeFinished(success));
-//			} catch (ContactExistsException e) {
-//				tryToClose(conn);
-//				ReturnShardState.SocialBackupExchangeResult.Error
-//						error = new ReturnShardState.SocialBackupExchangeResult.Error(
-//						e.getRemoteAuthor());
-//				state.postValue(
-//						new ReturnShardState.SocialBackupExchangeFinished(error));
-//			} catch (DbException | IOException e) {
-//				tryToClose(conn);
-//				logException(LOG, WARNING, e);
-//				ReturnShardState.SocialBackupExchangeResult.Error
-//						error =
-//						new ReturnShardState.SocialBackupExchangeResult.Error(null);
-//				state.postValue(
-//						new ReturnShardState.SocialBackupExchangeFinished(error));
-//			}
-//		});
-//	}
 
 
 	/**
@@ -252,18 +173,19 @@ class OwnerReturnShardViewModel extends AndroidViewModel implements SecretOwnerT
 
 	@Override
 	public void onStateChanged(SecretOwnerTask.State state) {
-       if (state instanceof SecretOwnerTask.State.Listening) {
-	       DisplayMetrics dm = getApplication().getResources().getDisplayMetrics();
-	       ioExecutor.execute(() -> {
-		       byte[] payloadBytes = ((SecretOwnerTask.State.Listening) state).getLocalPayload();
-		       if (LOG.isLoggable(INFO)) {
-			       LOG.info("Local payload is " + payloadBytes.length
-					       + " bytes");
-		       }
-		       // Use ISO 8859-1 to encode bytes directly as a string
-		       String content = new String(payloadBytes, ISO_8859_1);
-		       qrCodeBitmap = QrCodeUtils.createQrCode(dm, content);
-	       });
-       }
+		this.state.postValue(state);
+		if (state instanceof SecretOwnerTask.State.Listening) {
+			DisplayMetrics dm = getApplication().getResources().getDisplayMetrics();
+			ioExecutor.execute(() -> {
+				byte[] payloadBytes = ((SecretOwnerTask.State.Listening) state).getLocalPayload();
+				if (LOG.isLoggable(INFO)) {
+					LOG.info("Local payload is " + payloadBytes.length
+							+ " bytes");
+				}
+				// Use ISO 8859-1 to encode bytes directly as a string
+				String content = new String(payloadBytes, ISO_8859_1);
+				qrCodeBitmap = QrCodeUtils.createQrCode(dm, content);
+			});
+		}
 	}
 }

briar-android/src/main/res/layout/fragment_recovery_custodian_done.xml

@@ -10,6 +10,17 @@
 	android:paddingRight="@dimen/margin_large"
 	android:paddingBottom="@dimen/margin_medium">
 
+	<Button
+		android:id="@+id/button"
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:layout_marginTop="32dp"
+		android:text="@string/backup_done_dismiss"
+		android:textSize="24sp"
+		app:layout_constraintEnd_toEndOf="parent"
+		app:layout_constraintStart_toStartOf="parent"
+		app:layout_constraintTop_toBottomOf="@+id/textView2" />
+
 	<TextView
 		android:id="@+id/textView2"
 		android:layout_width="wrap_content"