Android Question Problem with WIFI Direct

You should enable USB debugging. It will allow you to see the logs.
1. The file name is sent before the file. If you are sending a file chosen with Content Chooser then it is highly possible that the name is a number.
2. You need to check the logs to see the error.

Thank you Erel - I have found B4A Bridge to be such a convenient tool, it has become my goto tool for testing. I had virtually forgotten about USB Debugging.

Using USB Debugging I found two simple single character typos that were the culprits. I hope that is all. I still have a problem in that I can transfer files flawlessly from a device running Android v-4.0.4 to another running v-4.1.2. When I reverse devices to send from the device running v-4.1.2 to the other running v-4.0.4 my app stops running, with the same app has stopped running message, on the receiving device (v-4.0.4). To make matters worse, no matter how I try, I cannot seem to set up USB Debugging on the error prone device. So, I can’t log for the error.

In your Wifi Direct tutorial you state that it is recommended to use Android 4.1+ devices, as there are several major known issues with Android 4.0.4 devices and Wifi Direct. I’m thinking that v-4.0.4 may be the reason for both my inability to setup USB Debugging, and for the app stopping on receiving a file transfer to this device.

I have uploaded my revised project, and would appreciate it if some kind soul would test it using two devices running Android v-4.1+.

Any help with this is greatly appreciated.

Best regards

Edit – After giving up trying to establish USB Debugging with the device running Android v-4.0.4, and a fresh boot of both devices, all is well. It would seem that my efforts to do USB Debugging on this device, while failing, also made it unstable. Hence, all the grief.

The app performs without problems and now, with the heart of the app functioning properly, I can proceed to finish it. Thank you for your interest.