When should I use ConstraintLayout?

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When should I use ConstraintLayout?

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#1 by (2 votes)

1

In addition to RelativeLayout , FrameLayout , LinearLayout , TableLayout , among others already existing, that greatly meet the needs related to layout , Google announced Google I / O 2016 or ConstraintLayout ". Here is an example:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

</android.support.constraint.ConstraintLayout>

Noting that it has a lot of similarity to RelativeLayout , what would be the difference between the two?
When should I use ConstraintLayout ?

android android-layout

asked by anonymous 26.03.2017 / 03:00

1 answer

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score 2 · Answer 1

When you need layouts more complex and you need a more precise hierarchy.

ConstraintLayout was created, according to doc , to create screens with a more precise hierarchy, without having to nest the views . That is, whenever you're going to do a relatively complex layout that needs precise alignment, you have to use ConstraintLayout . The purpose of this view is to allow developers to optimize the hierarchies of their screens.

Advantages

Optimized for display hierarchies
You will have no problem if the visibility state of your view is GONE , the alignment will work anyway and you will no longer worry about broken layouts.
Completely user friendly editor
Easy to use and designed for responsive screens

Disadvantages

The layout editor will simply move your views for no reason, this should be caused when we try to move one view and we end up clicking another.
Performance. The performance in which views are created is somewhat lower if compared to RelativeLayout or LinearLayout .
The main problem is the editor . Over time, you'll realize that the editor does things unexpectedly, so you'll end up preferring to create your layouts manually. I prefer. It's better and a little faster.