Splashscreen motionLayout侦听器，完成后返回startActivity

MotionLayout motionLayout = findViewById(R.id.motionLayout);
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
        startActivity(new Intent(MainActivity.this, NextActivity.class));
        finish();
    }

    @Override
    public void onTransitionTrigger(MotionLayout motionLayout, int triggerId, boolean positive, float progress) {
        // 动画触发时的回调
    }
});