Android app crashes at startDfu when targeting SDK version 31+

[alfredcheuk]

When running startDfu function on Android while targeting SDK version 31, the app crashes directly without any errors thrown.

I used adb logcat to trace the log messages and found the following issue:

(masked out the project name that I am working on, and the first line was me printing the firmware file for debugging)

I am not the most familiar with logcat outputs but it seems that it ran into the exception on the highlighted line, then the app proceeded to crash directly.

I have tested that the exact same code works on iOS, as well as Android while targeting SDK version 30.

Does anyone have any idea whether this is something that needs to be changed on the library's side, or have I not configured it correctly specifically for SDK version 31?

[vkourtis]

There is and open PR that fixes that #164

[alfredcheuk]

Thank you so much, I will keep an eye out on this.

[vkourtis]

Thank you so much, I will keep an eye out on this.

Check my comment on the PR. I was able to patch it with patch-package.

[fabiendem]

Is there any maintainer left on this library? Would be good to merge this.

A targetSdkVersion set to Android 12 (API 31) will be mandatory in November 2022: https://support.google.com/googleplay/android-developer/answer/11926878

Cheers!

[fabiendem]

Fix available in this fork: https://github.com/Salt-PepperEngineering/react-native-nordic-dfu

[sachinsaini794]

as vkou said,

I've tested it on Android 12 and it's working. Node_modules were not updating code. It shows the 3.2.1 version in package.json, but the principle was not added to the node_modules folder, so I created the patch package and replaced the android folder. Everything is working now.

[kakonyitibor]

Hello,
I had the same issue, the app crashed on startDFU with Android12.
I'm trying PR #164 and although it doesn't crash anymore, but process gets stuck in the DFU_PROCESS_STARTING state, then throws GATT ERROR. (I don't have this problem with older ANdroid versions. )
Can you help me please?
Thank you!

Edit: turned out that nRF Connect Mobile produces a similar behaviour with the Android12 phone I'm using, so this might be a device-specific bug in the Nordic Android DFU library.

[sachinsaini794]

@kakonyitibor have you used the patch for the react-native-nordic-dfu? if not please use it and update the code as in package 3.2.1.

compare with this https://github.com/Salt-PepperEngineering/react-native-nordic-dfu/blob/master/android/build.gradle

for example -
+def DEFAULT_COMPILE_SDK_VERSION = 31
+def DEFAULT_BUILD_TOOLS_VERSION = '31.0.0'
+def DEFAULT_TARGET_SDK_VERSION = 31

[kakonyitibor]

@kakonyitibor have you used the patch for the react-native-nordic-dfu? if not please use it and update the code as in package 3.2.1.

compare with this https://github.com/Salt-PepperEngineering/react-native-nordic-dfu/blob/master/android/build.gradle

for example - +def DEFAULT_COMPILE_SDK_VERSION = 31 +def DEFAULT_BUILD_TOOLS_VERSION = '31.0.0' +def DEFAULT_TARGET_SDK_VERSION = 31

Thanks for your reply.
Yes, I'm using the patch, build.gradle is the same as the one you linked. Thanks to this patch, DFU does not crash the app on Android 12 anymore. Now it just throws a GATT ERROR right after starting the DFU.