ExpandableConstraintLayout
Description
The ExpandableConstraintLayout presents itself as a wrapper around Google's ConstraintLayout with the small feature of toggling (expansion/collapse). This class was implemented based on @cmfsotelo's idea of ExpandableLinearLayout
Project Inclusion
Include it in your project- In your root/build.gradle
allprojects {
repositories {
...
maven {
url 'https://jitpack.io'
}
}
}
- In your app/build.gradle
dependencies {
compile 'com.github.rjsvieira:rjsvieira:expandableConstraintLayout:1.0.0'
}
Initialization
Initialize your ExpandaConstraintLayout just like any other ConstraintLayout
ExpandableConstraintLayout ecl = (ExpandableConstraintLayout) findViewById(R.id.ecl);
Configuration
The user can define the duration of the expansion/collapse as well as the Interpolator used to animate the valuesvoid setInterpolator(TimeInterpolator interpolator) void setAnimationDuration(int animationDuration)Interaction
The interaction methods are really basic and intuitive. In short, they stand for :void toggle() void expand() void collapse()Listener
The ExpandableConstraintLayout allows the implementation of a listener :
setAnimationListener(@NonNull ExpandableConstraintLayoutListener listener)This listener will track the following events :
/** * Notifies the start of the animation. * Sync from android.animation.Animator.AnimatorListener.onAnimationStart(Animator animation) */ void onAnimationStart(ExpandableConstraintLayoutStatus status);
/** * Notifies the end of the animation. * Sync from android.animation.Animator.AnimatorListener.onAnimationEnd(Animator animation) */ void onAnimationEnd(ExpandableConstraintLayoutStatus status);
/** * Notifies the layout is going to open. */ void onPreOpen();
/** * Notifies the layout is going to equal close size. */ void onPreClose();
/** * Notifies the layout opened. */ void onOpened();
/** * Notifies the layout size equal closed size. */ void onClosed();