Google recently announced the launch of Android Instant Apps, a new technology which allows just the bare minumum of an App to be downloaded from links, bypassing the Play Store. This sounds cool enough on its own, but the implications of this reach far deeper than at first appears, and could end up changing the entire internet.
- Jinyan Cao Comments
Minimal coding required
ConstraintLayout seems to be the hot new thing nowadays. Flattening your view hierarchy, improving performance, supporting arbitrary bounding rules — it promises to fix all of the shortcomings of some previous layout files (*cough* I’m looking at you RelativeLayout *cough*) and more. But there is one other benefit of ConstraintLayout that most people are unaware of and the official documentation curiously doesn’t mention anything about: performing cool animations on your ConstraintLayout views with very little code.
How?
I’m going to assume that you know the basics of ConstraintLayout (e.g. you know what is app:layout_constraintLeft_toLeftOf and its relatives). Most of the tutorials on ConstraintLayout focus on using the newly improved Android Studio layout design panel where you can drag/drop/visualize the various constraints. For the purposes of animations, it’s also good to take a peek at the generated XML to get a better understanding of the various constraint attributes so you know how to manipulate them.
- Huyen Tue Dao Comments
The mini-me's of Activities
This tutorial is an introduction to Android Fragments. You will learn the fundamental concepts of Android Fragments while creating an app that displays the rage comics.
Update note: This tutorial has been updated to API 25 and Android Studio 2.2.2 by Huyen Tue Dao. The original tutorial was written by Huyen Tue Dao.
fragment | noun | /’frag-mənt/
an isolated or incomplete part of something.
A fragment is an Android component that holds part of the behavior and/or UI of an activity. As the name intimates, fragments are not independent entities, but are subservient to a single activity.
In many ways, they resemble and echo the functionality of activities.
