TransitionAdapter.java
package androidx.constraintlayout.motion.widget;
public abstract class TransitionAdapter implements MotionLayout.TransitionListener {
@Override
public void onTransitionStarted(MotionLayout motionLayout, int startId, int endId) {
}
@Override
public void onTransitionChange(MotionLayout motionLayout, int startId, int endId, float progress) {
}
@Override
public void onTransitionCompleted(MotionLayout motionLayout, int currentId) {
}
@Override
public void onTransitionTrigger(MotionLayout motionLayout, int triggerId, boolean positive, float progress) {
}
}