Android 12 Bluetooth Permissions

Question

I'm trying to connect to a device using BLE, but I'm getting an error on Android 12. I've tried a lot of different methods, but I couldn't find any solution. How do I ask for Bluetooth permissions?

AndroidManifest.xml

 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.BLUETOOTH"
        android:maxSdkVersion="30" />
 <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"
        android:maxSdkVersion="30" />
 <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
 <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
 <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

 <uses-feature android:name="android.hardware.bluetooth_le"
        android:required="true" />

 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

And Permission Request Code

private static final String[] BLE_PERMISSIONS = new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };
    
private static final String[] ANDROID_12_BLE_PERMISSIONS = new String[]{
            Manifest.permission.BLUETOOTH_SCAN,
            Manifest.permission.BLUETOOTH_CONNECT,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };

public static void requestBlePermissions(Activity activity, int requestCode) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S)
        ActivityCompat.requestPermissions(activity, ANDROID_12_BLE_PERMISSIONS, requestCode);
    else
        ActivityCompat.requestPermissions(activity, BLE_PERMISSIONS, requestCode);
}

Error message:

Fatal Exception: java.lang.SecurityException
Need android.permission.BLUETOOTH_CONNECT permission for android.content.AttributionSource@3d290817: GattService registerClient

Answer 1

It looks like it should work but if you don't actually need the location permissions, I would suggest the following.

<uses-permission
    android:name="android.permission.BLUETOOTH_SCAN"
    android:usesPermissionFlags="neverForLocation"
    tools:targetApi="s" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission
    android:name="android.permission.BLUETOOTH"
    android:maxSdkVersion="30" />
<uses-permission
    android:name="android.permission.BLUETOOTH_ADMIN"
    android:maxSdkVersion="30" />
<uses-permission
    android:name="android.permission.ACCESS_COARSE_LOCATION"
    android:maxSdkVersion="30" />
<uses-permission
    android:name="android.permission.ACCESS_FINE_LOCATION"
    android:maxSdkVersion="30" />

With permission request

private static final String[] BLE_PERMISSIONS = new String[]{
        Manifest.permission.ACCESS_COARSE_LOCATION,
        Manifest.permission.ACCESS_FINE_LOCATION
};

@RequiresApi(api = Build.VERSION_CODES.S)
private static final String[] ANDROID_12_BLE_PERMISSIONS = new String[]{
        Manifest.permission.BLUETOOTH_SCAN,
        Manifest.permission.BLUETOOTH_CONNECT
};

Answer 2

I, too, followed code from the Android documentation. Please remove max. SDK version 30 if you are testing and running in Android 12 devices.

     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />

apart from that your code is good.

And you can use your same code too for requesting runtime bluetooth permissions

private static final String[] BLE_PERMISSIONS = new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };
    
private static final String[] ANDROID_12_BLE_PERMISSIONS = new String[]{
            Manifest.permission.BLUETOOTH_SCAN,
            Manifest.permission.BLUETOOTH_CONNECT,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };

public static void requestBlePermissions(Activity activity, int requestCode) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S)
        ActivityCompat.requestPermissions(activity, ANDROID_12_BLE_PERMISSIONS, requestCode);
    else
        ActivityCompat.requestPermissions(activity, BLE_PERMISSIONS, requestCode);
}