discovery – Tarik Billa

How to periodically scan for bluetooth devices on android

September 13, 2023 by Tarik

I guess this was so simple but didnt strike me before. Here is the answer, private BluetoothAdapter mBtAdapter; mBtAdapter.startDiscovery(); private final BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); // When discovery finds a device if (BluetoothDevice.ACTION_FOUND.equals(action)) { //do something } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) { … Read more

Python unittest and discovery

April 14, 2023 by Tarik

I ran into the same issue when running python -m unittest discover. Here is a good checklist to verify your setup. Nose is more flexible with the allowed configurations, but not necessarily better. Make sure all files/directories start with test. Do not use test-something.py, since that is not a valid Python module name. Use test_something.py. … Read more

any way to discover Android devices on your network?

March 27, 2023 by Tarik

There is an very simple approach that gave me positive results in few different devices. When a device connects to your router it receives an IP (i.e. DHCP) and registers a name in DNS. The name that is registered seems to be always in the form android_nnnnnnnn. Of course, you can name any computer with … Read more

Determine if an app exists and launch that app on iOS

February 13, 2023 by Tarik

Doable, but tricky. Launching installed apps, like the FB or Twitter apps, is done using the Custom URL Scheme. These can be used both in other apps as well as on web sites. Here’s an article about how to do this with your own app. Seeing if the URL is there, though, can be tricky. … Read more

RESTful API runtime discoverability / HATEOAS client design

February 7, 2023 by Tarik

This is definitely a tough nut to crack. At Google, we’ve implemented our Discovery Service that all our new APIs are built against. The TL;DR version is we generate a JSON Schema-like spec that our clients can parse – many of them dynamically. That results means easier SDK upgrades for the developer and easy/better maintenance … Read more