要实现Android MotionLayout的滑动揭示效果,可以按照以下步骤进行:
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta6'
scene_motion.xml
),并在其中定义MotionLayout的动画效果,如下所示:
MotionLayout motionLayout = findViewById(R.id.motionLayout);
motionLayout.setTransition(R.id.start, R.id.end);
motionLayout.setTransitionListener(new MotionLayout.TransitionListener() {
@Override
public void onTransitionStarted(MotionLayout motionLayout, int startId, int endId) {
// 动画开始时的回调
}
@Override
public void onTransitionChange(MotionLayout motionLayout, int startId, int endId, float progress) {
// 动画过程中的回调
}
@Override
public void onTransitionCompleted(MotionLayout motionLayout, int currentId) {
// 动画完成时的回调
}
@Override
public void onTransitionTrigger(MotionLayout motionLayout, int triggerId, boolean positive, float progress) {
// 触发器回调
}
});
motionLayout.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
// 处理MotionLayout的触摸事件
return motionLayout.onTouchEvent(motionEvent);
}
});
这样,当你滑动MotionLayout时,就会触发滑动揭示效果。你可以根据需要在TransitionListener的回调方法中执行其他操作,比如改变其他View的状态。