Android Question SDK 31 and USBserial.RequestPermission

[yo3ggx]

Hello,

As already mentioned in another thread, with targetSdkVersion="31" (mandatory for Play Store updates after 1st or November), I get the following error when trying to request permission for USBserial.

Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.

As suggested in another thread, I've updated Core internal library to 18.11 (still showing as 18.10 in the IDE), but no success.

There is any other possibility to solve this?

Thank you.

 

[agraham]

Post your permission code that is failing together with the error and stack trace from the Log so we can see where the intent is generated.

 

[yo3ggx]

The error appears in the USBserial library in the line
'manager.requestPermission(usbDevice, PendingIntent.getBroadcast((Context)BA.applicationContext, 0, new Intet'
.

 public void RequestPermission(int paramInt) {
    byte b = 1;
    UsbManager usbManager = (UsbManager)BA.applicationContext.getSystemService("usb");
    HashMap hashMap = usbManager.getDeviceList();
    if (hashMap.size() > 0)
      for (UsbDevice usbDevice : hashMap.values()) {
        if (b++ == paramInt) {
          usbManager.requestPermission(usbDevice, PendingIntent.getBroadcast((Context)BA.applicationContext, 0, new Intent("com.android.example.USB_PERMISSION"), 0));
          return;
        } 
      }  
    UsbAccessory[] arrayOfUsbAccessory = usbManager.getAccessoryList();
    if (arrayOfUsbAccessory != null)
      usbManager.requestPermission(arrayOfUsbAccessory[0], PendingIntent.getBroadcast((Context)BA.applicationContext, 0, new Intent("com.android.example.USB_PERMISSION"), 0)); 
  }

 

[agraham]

Try this

 

[yo3ggx]

No more errors. Now is working perfect with targetSdkVersion="31". Thanks a lot.
Initially tried to replace USBserial library with felUSBserial, but same errors occurs with that library too.
I will open another thread for felUSBserial, as I have another app using it (USBserial does not allow me to use multiple interfaces for the same usbserial device, like for example CP2105).

 

[agraham]

USBserial does not allow me to use multiple interfaces for the same usbserial device, like for example CP2105).

I thought it did, but I could be wrong. It was modified by user @JeanlLC to accept multiple device.

UsbSerial library 2.0 - supports more devices

This is an expanded version of the original UsbSerial library. It has added support for Prolific PL2303 USB to serial converters, Android ADK devices and USB permissions. All devices use the same simple interface intended to be used with AsyncStreams and AsyncStreamsText. Note that AsyncStreams...

www.b4x.com

and I modified his source to add the required flag. What version were you using?

 

[yo3ggx]

What version were you using?

Version 2.4, but now I'm using your version (2.5). I'm talking about using multiple interfaces from the same device as separate felUSBserial instances. CP2105 has 2 serial ports (interfaces) in a single USB device. I don't see any option in the USBSerial library to select a specific interface. More, USBserial lib does not allow me to control RTS and DTR pins directly like that.

    Dim USBSerial1 as felUsbSerial
    ...
    Dim jo As JavaObject
    jo = USBSerial1
    jo.RunMethod("setDTR", Array(true))
    jo.RunMethod("setRTS", Array(true))

 

[agraham]

Understood