同时制作片段过渡动画视图

Question

我正在用片段 B 替换片段 A 并制作动画。片段 B 有一个 RelativeLayout，一个 TextView 和一个 ListView。我可以看到片段 B 中的视图是单独动画的，TextView 以与列表项 1 副标题不同的速度滑入，而列表项 1 标题和图标立即出现而没有动画，我想整个视图同时动画，这可能实现吗？

    FragmentManager fragmentManager = getSupportFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    Fragment existing = fragmentManager.findFragmentById(R.id.welcome_content);
    if (existing != null) {                
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            fragmentToLoad.setAllowEnterTransitionOverlap(true);                    
            fragmentToLoad.setEnterTransition(new Slide(Gravity.RIGHT));
        }
        fragmentTransaction.remove(existing);
    }
    fragmentTransaction.add(R.id.welcome_content, fragmentToLoad);
    fragmentTransaction.commitNow();

Answer 1

将 android:transitionGroup="true" 应用于 FragmentB 的根布局。

来自 docs of ViewGroup#setTransitionGroup(boolean):

Changes whether or not this ViewGroup should be treated as a single entity during Activity Transitions. If false, the ViewGroup won't transition, only its children. If true, the entire ViewGroup will transition together.