iopfeedback.blogg.se - Android studio tutorial 2016

The xml code for the above layout looks like: sample.xml

Fixed Size - This allows us to set constant width and height.

Any Size - This is similar to match parent.

Wrap Content - This wraps the view to fill it’s content.

It also allows to change the size of the view by toggling between the following modes: Notice the Properties inspector pane at the right-hand side: It shows the margins set for each side of the view. Let’s assign the constraints on the TextView and look into the xml code of it. Baseline handle - It’s used to align the baseline with another textview in the layout. It’s used to set the top, left, bottom and right constraints of the view. Side handle - It’s the circular handle present on the centre of each side. Resize handle - It’s present on the four corners and is used to resize the view, but keeping its constraints intact. The TextView above has three types of handles: Let’s drag and drop a TextView on the layout and assign the constraints to it. A view inside the ConstraintLayout has handles(or anchor points) on each side which are used to assign the constraints. The aim of ConstraintLayout is to improve the performance of the applications by removing the nested views with a flat and flexible design. A ConstraintLayout is similar to a RelativeLayout, but with more power. Android Constraint Layout OverviewĪndroid ConstraintLayout is used to define a layout by assigning constraints for every child view/widget relative to other views present. Open the design pane of the respective layout, right click the root component and choose the relevant option as shown in the image below. To convert an old layout into a ConstraintLayout. compile ':constraint-layout:1.0.0-beta4' Create a new layout with the root class set to ConstraintLayout as shown in the image below. Create a new empty activity project and add the following dependency inside the adle file. We need to download the necessary SDK Tools for ConstraintLayout from the SDK Manager. To use android ConstraintLayout, make sure you’re using the latest Android Studio version. The new Layout Editor has a set of powerful tools to allow developers to create flat-ui hierarchies for their complex layouts. Google had introduced android constraint layout editor at Google I/O Conference 2016.

In this tutorial, we’ll discuss the intricacies of android ConstraintLayout.