android

android tips and tutorials

Android/Kotlin: A FloatingActionButton setOnClickListener Snackbar example

As a quick note to self, this is an example of how to implement a setOnClickListener on a FloatingActionButton with Android and Kotlin:

fab.setOnClickListener { view ->
    Snackbar.make(
        view,
        "An exciting message!",
        Snackbar.LENGTH_LONG
    ).setAction("Action", null).show()
}

Hopefully that’s enough to get “future me” pointed in the right direction when I need this again. :)

(There are more lambda details at this link.)

Amazon Fire 10 HD: 33% off on Black Friday, 2018

I need a new tablet, and I just might bite the bullet on the Amazon Fire 10 HD today (Black Friday, 2018). For my Android development I don’t like that it’s based on Android 5, but $100 (33% off its regular price) for a tablet with decent performance is hard to pass up for my current needs.

How to make a phone call from your Android app

I came across this Android phone dialer tip yesterday. If you want to make a phone call from an Android application, all you have to do is create a new Intent, either an Intent.ACTION_DIAL (to start the call) or Intent.ACTION_CALL (to place the call).

Here are the three lines of source code you need to get started:

Intent dialIntent = new Intent();
dialIntent.setAction(Intent.ACTION_DIAL);
dialIntent.setData(Uri.parse("tel:8675309"));

Google is introducing a Neural Networks API in Android 8.1 developer preview

Several media outlets are reporting that Google is introducing their Neural Networks API in developer preview of Android 8.1. TechCrunch has a well-written article that includes this:

“The big highlight here is the new Neural Networks API, which brings hardware-accelerated inference to the phone for quickly executing previously trained machine learning models. Bringing these calculations to the edge can bring a lot of utility to the end user by reducing latency and load on the network, while also keeping more sensitive data on-device.”

Making the switch, from iPhone to Android

The comical part of my recent surgery was that my iPhone 5S kept dying, both before and after the surgery. Something is going on where the iPhone completely loses reception, and the only way to fix it — the only hope of fixing it — is to completely restore the phone using a secret handshake technique they taught me at the local Apple Store. (They also told me this technique only works about 10% of the time, and kindly suggested I buy a new iPhone because the 5S is almost four years old.)