Transitioner provides easy, dynamic and adjustable animations between two views with nested children.

App design featurehere.

Usage

First you need to create a Transitioner object containing your original and ending views:

valtransition=Transitioner(original_view, ending_view)

The view pairs must have matching "tag" attributes so that they can be bound together:

<ConstraintLayout
android:id="@+id/original_view"
android:tag="constrView"
...>

<TextView
android:id="@+id/text"
android:tag="firstView"
.../>
</ConstraintLayout>

<ConstraintLayout
android:id="@+id/ending_view"
android:tag="constrView"
android:visibility="invisible"
...>

<EditText
android:id="@+id/text3"
android:tag="firstView"
.../>
</ConstraintLayout>

I recommend you hide the second view layout, since it's only used as a placeholder for the end destination. The views can be of any type, you can mix and match them, the two layouts can have a different number of views and nested layouts are 100% supported. The only things to keep in mind are:

• all views which you would want to match together must have the same tag attribute in both layouts

• all unmatched views will remain at their original place inside the original layout

• the second layout is just a placeholder. It doesn't hold any logic, it only shows where the original layout should move to.

Basic Usage

transition.setProgress(0.5f)
//or
transition.setProgress(50)

Additional methods and tweaks

transition.duration=500

transition.interpolator=AccelerateDecelerateInterpolator()

transition.animateTo(percent=0f)

transition.onProgressChanged {
//triggered on every progress change of the transition
seekBar.progress=(it*100).toInt()
}

valprogress:Float=transition.currentProgress

Here is a preview of a simple application made using this library

This effect can be reproduced by placing the "Transitioner.setProgress(Float)" function inside a onTouch or a onProgressChanged method.

Download

Manually

The recommended way to download is to copythe single library class fileand use it in your application.

Gradle

dependencies{
compile'bg.devlabs.transitioner:transitioner:<latest_version>'
}

Getting help

Dev Labs@devlabsbg

Radoslav Yankov@rado__yankov

UnderMIT License.