file transfer: wait for transfer id before receiving file

Change-Id: I60f1072bbd72475e1b6b99cf564c2b16ba5b6670

ring-android/libringclient/src/main/java/cx/ring/services/AccountService.java

@@ -1233,7 +1233,7 @@ public class AccountService {
                 transfer = new DataTransfer(transferId, info.getDisplayName(),
                         outgoing, info.getTotalSize(),
                         info.getBytesProgress(), info.getPeer(), info.getAccountId());
-                mHistoryService.insertDataTransfer(transfer).subscribe(() -> {}, e -> Log.e(TAG, "Error adding data transfer", e));
+                mHistoryService.insertDataTransfer(transfer).blockingAwait();
             }
             mDataTransfers.put(transferId, transfer);
         } else synchronized (transfer) {

ring-android/libringclient/src/main/java/cx/ring/utils/FileUtils.java

@@ -56,8 +56,10 @@ public class FileUtils {
     }
 
     public static boolean moveFile(File file, File dest) {
-        if (!file.exists() || !file.canRead())
+        if (!file.exists() || !file.canRead()) {
+            Log.d(TAG, "moveFile: file is not accessible " + file.exists() + " " + file.canRead());
             return false;
+        }
         if (file.equals(dest))
             return true;
         if (!file.renameTo(dest)) {