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androidbluetooth
Venator85
Venator85

Reputation: 10335

Disable Bluetooth discoverable mode on Android

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?

Upvotes: 14

Views: 13146

Answers (3)

Kristjan Kiolein
Kristjan Kiolein

Reputation: 103

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

Upvotes: 1

cotalfa
cotalfa

Reputation: 11

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.

Upvotes: 1

Brad Hein
Brad Hein

Reputation: 11057

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);

Upvotes: 13

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