Disable Bluetooth discoverable mode on Android

Question

I found in the Android documentation how to turn Bluetooth discoverability mode on:

Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);

This will make the device discoverable for 300 seconds (documentation).

My question is: how to turn discoverability OFF before this timeout occurs? I'd like to replicate the corresponding setting in Settings|Wireless and networks|Bluetooth settings applet, that allows discoverability to be turned on and off with a click.

Any help?

Solved with reflection in this thread: https://stackoverflow.com/a/47452626/5239473 — Jamie Hlusko, Dec 14 '17 at 19:57

score 12 · Answer 1 · answered Jun 24 '10 at 19:50

12

Just send a new discoverable request with duration 1 (or 0 might even work):

Intent discoverableIntent = new
Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 1);
startActivity(discoverableIntent);

answered Jun 24 '10 at 19:50

Brad Hein

10,997
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Agreed, but it's the best/only solution I could find. So what does your app do? – Brad Hein Jun 25 '10 at 17:41
It's just a simple widget to enable/disable discoverability, nothing fancy :) – Venator85 Jun 26 '10 at 17:43
2

Yeah 1 works. But, the user will be asked again to confirm :( Any other way? – QQQuestions Jun 25 '11 at 18:41
5

According to [documentation](http://developer.android.com/guide/topics/connectivity/bluetooth.html) using 0 will put it in discoverable mode indefinitely. – Dustfinger Feb 17 '14 at 10:40

score 1 · Answer 2 · answered Mar 01 '18 at 12:12

Care when using this method, it might be easily changed as it is hidden.

BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();  
try {
    Method method = BluetoothAdapter.class.getMethod("setScanMode", int.class);
    method.invoke(bluetoothAdapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE);
} catch (NoSuchMethodException | IllegalArgumentException | IllegalAccessException | InvocationTargetException e) {
    Log.e(TAG, "Failed to turn off bluetooth device discoverability.", e);
}

Also usable with SCAN_MODE_NONE and SCAN_MODE_CONNECTABLE_DISCOVERABLE (uses default duration)

Source

score 1 · Answer 3 · edited Jun 12 '11 at 09:00

1

cancelDiscovery() is not for this. This method can be used to stop the scanning of your device for other bluetooth devices. It is different from this to make device not visible.

edited Jun 12 '11 at 09:00

Varun

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answered Jun 11 '11 at 14:05

cotalfa

11
1

Disable Bluetooth discoverable mode on Android

3 Answers3

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