Under the android use 1 2 serial access device, in the case of unexplained access failure, reinstall the APP can't, can only restart the device to recover, don't know what reason

CodePudding user response:

Code and see if there are any exception thrown

CodePudding user response:

Is USB bandwidth problem we met, could you confirm this root supports USB port there is something wrong with the USB port, if wrong, could be the USB bandwidth problem;