Enable bluetooth method is deprecated in Android API 33

[marllonfrizzo]

Hello!

After updating from version 3.2.1 to version 3.4.0, the enable method stopped working on Android API 33.

I noticed that this function was deprecated on Android API 33 and to activate Bluetooth programmatically, it is necessary to request user permission.

According to the documentation, for this request to work, an ACTION_REQUEST_ENABLE Intent must be used. I have no experience with Android development, but checking the changes that occurred between versions 3.2.1 and 3.4.0, this PR https://github.com/dotintent/react-native-ble-plx/pull/1232 possibly introduced the change that caused the reported problem as a side effect. By reverting this change for testing, the enable method works by opening a dialog for the user to provide this permission.

I believe that reverting is not a solution, since this change fixes other problems, but perhaps think of some other solution to work on Android API 33 or update the documentation regarding this.

Best regards!

[Rafaelbg107]

Hi!

At the meantime I found a workaround using expo-intent-launcher to access ACTION_REQUEST_ENABLE.

Your enabler function should be like

const enableBT = async () => {
  if (Platform.OS === 'android') {
    try {
      startActivityAsync('android.bluetooth.adapter.action.REQUEST_ENABLE');
    } catch (error) {
      console.log(error)
    }
  }
}

At least while it is fixed.

[aliberski]

Thank you for bringing this up! We've added the issue to our backlog and will work on a fix soon. Contributions are always welcome if you'd like to help out!

[marllonfrizzo]

Hi!

At the meantime I found a workaround using expo-intent-launcher to access ACTION_REQUEST_ENABLE.

Your enabler function should be like

const enableBT = async () => {
  if (Platform.OS === 'android') {
    try {
      startActivityAsync('android.bluetooth.adapter.action.REQUEST_ENABLE');
    } catch (error) {
      console.log(error)
    }
  }
}

At least while it is fixed.

Hello,

Thanks for the tip, it worked!

Here I ended up using react-native's own Linking, it worked too.

It looked like this

Linking
  .sendIntent('android.bluetooth.adapter.action.REQUEST_ENABLE')
  .catch(error => {
    console.warn(error);
    Linking.openSettings();
  });

Thank you for bringing this up! We've added the issue to our backlog and will work on a fix soon. Contributions are always welcome if you'd like to help out!

Thanks for the quick response!

I have no experience with Android development, but I'll give it a try.

Best regards!

[Rafaelbg107]

Thank you for bringing this up! We've added the issue to our backlog and will work on a fix soon. Contributions are always welcome if you'd like to help out!

I've never submitted a fix on a public project but I'll give it a shot!

[g-otn]

Another workaround is to use the react-native-bluetooth-state-manager package:

import BluetoothStateManager from 'react-native-bluetooth-state-manager';
// ...
  BluetoothStateManager.requestToEnable();

However this library is unmaintained so I believe the other workaround is better.