Bluetooth not sending file to other device

Question

It is already asked but i didn\'t find any solution. For bluetooth application i am using the bluetoothShare.class .

My source code for sending the file to

Answer 1

This code works with firmware from MediaTek. Tested on Android 4.0.4. Sends the file, without asking anything from the user

public boolean SendFileViaBluetoothOPP(String file_path, String destinationMAC){
    BluetoothAdapter btadapter = BluetoothAdapter.getDefaultAdapter();
    if(btadapter == null)
        return false;

    BluetoothDevice btdev = btadapter.getRemoteDevice(destinationMAC);
    if(btdev == null)
        return false;

    Uri uri = Uri.fromFile(new File(file_path));

    Intent shareIntent = new Intent(Intent.ACTION_SEND)
                        .putExtra(Intent.EXTRA_STREAM, uri)
                        .setType("application/zip");

    List<ResolveInfo> resolvedActivities = getPackageManager().queryIntentActivities(shareIntent,  0);

    boolean found = false;
    for(ResolveInfo actInfo: resolvedActivities){
        if(actInfo.activityInfo.packageName.equals("com.mediatek.bluetooth"))
        {                   
            shareIntent.setComponent( new ComponentName(actInfo.activityInfo.packageName, actInfo.activityInfo.name ) );
            shareIntent.putExtra("com.mediatek.bluetooth.sharegateway.extra.DEVICE_ADDRESS", btdev);
            shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
            found = true;
            break;
        }
    }

    if(found){
        startActivity(shareIntent);
        return true;
    }

    return false;
}

On older phone from MediaTek with Android 2.2.1 this code launches BluetoothDevicePicker to complete the operation.

Answer 2

BluetoothShare class not supported android 4.1 and above. you can use the following intent coding to send file in android version 4.1 and above

Intent intent = new Intent();
    intent.setAction(Intent.ACTION_SEND);
    intent.setComponent(new ComponentName(
        "com.android.bluetooth",
        "com.android.bluetooth.opp.BluetoothOppLauncherActivity"));
    intent.setType("image/jpeg");
    file = new File(filepath);
    intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
    startActivity(intent);

and also some devices in Android v 2.2/2.3 not send the file via bluetoothShare class.

Answer 3

Maybe you can try another solution with BufferedWriter and BufferedReader.

Here is a snipped code:

            BluetoothDevice mmDevice;
            Set<BluetoothDevice> mBluetoothAdapter;

            BluetoothAdapter bAdapter = BluetoothAdapter
                    .getDefaultAdapter();
            mBluetoothAdapter = bAdapter.getBondedDevices();

            for (BluetoothDevice bc : mBluetoothAdapter) {
                if (bc.getName().indexOf("name_of_bluetoothdevide") != -1) {
                    UUID uuid = UUID
                            .fromString("00001101-0000-1000-8000-00805F9B34FB"); // Standard
                                                                                    // SerialPortService
                                                                                    // ID
                    mmDevice = bc;
                    BluetoothSocket mmSocket = mmDevice
                            .createInsecureRfcommSocketToServiceRecord(uuid);
                    bAdapter.cancelDiscovery();
                    mmSocket.connect();
                    BufferedWriter Writer = new BufferedWriter(
                            new OutputStreamWriter(
                                    mmSocket.getOutputStream()));
                    Writer.write("Bluetooth connected!");
                    Writer.flush();

                    app.setmSocket(mmSocket);

                    break;
                }
            }

And for reading:

  BufferedReader Reader = new BufferedReader(
                    new InputStreamReader(mmSocket.getInputStream()));
            receivedMsg = Reader.readLine();

Hope it can help you.

Answer 4

Maybe this could help you in some way…

private void sendData(String message) {
    byte[] msgBuffer = message.getBytes();
    Log.d(TAG, "...Sending data: " + message + "...");
    try {
        outStream.write(msgBuffer);
    } catch (IOException e) {
        String msg = "In onResume() and an exception occurred during write: " + e.getMessage();
        if (address.equals("00:00:00:00:00:00")) 
            msg = msg + ".\n\nUpdate your server address from 00:00:00:00:00:00 to the correct address on java code";
        msg = msg +  ".\n\nCheck that the SPP UUID: " + MY_UUID.toString() + " exists on server.\n\n";
        errorExit("Fatal Error", msg);       
    }
}