android 中的重叠 TransitionManager 动画

Question

我正在尝试借助 TransitionManager 动画展开和折叠我的视图。以下是输出，

折叠顶视图时查看重叠布局。如何避免这种情况？我设置 "detailedView"（一个带有图标）可见性 GONE 并使用以下代码制作动画，

topView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                TransitionManager.beginDelayedTransition(topView);
                TransitionManager.beginDelayedTransition(bottomView);
                if (detailsView.getVisibility() == View.VISIBLE) {
                    detailsView.setVisibility(View.GONE);
                    cardText.setText("Collapse Title");
                } else {
                   detailsView.setVisibility(View.VISIBLE);
                   cardText.setText("Expanded Title");

                }
            }
        });

Answer 1

我会以不同的方式构建动画。我会用 wrap_content 制作一个带有顶部单元格的 LinearLayout，点击时我会做类似的事情：

 valueAnimator = ValueAnimator.ofInt(titleContainer.getHeight(),titleContainer.getHeight() + newHeight );
    valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            titleContainer.setHeight(animation.getAnimatedValue());
        }
    });
    valueAnimator.setDuration(270);
    valueAnimator.start();

Answer 2

我遇到了同样的问题。

TransitionManager.beginDelayedTransition() 函数采用的第一个参数必须是将在转换中交互的所有视图的父级 例如：

我有下一个布局：

<!-- The scene root  -->
<LinearLayout
    android:id="@+id/transition_container" >


    <!-- First card  -->
    <androidx.cardview.widget.CardView
        android:id="@+id/expandableCard1">

        <LinearLayout
           android:id="@+id/staticHeader1">
        </LinearLayout>

        <LinearLayout
           android:id="@+id/expandableContent1">
        </LinearLayout>

    </androidx.cardview.widget.CardView>


    <!-- Second card  -->
    <androidx.cardview.widget.CardView
        android:id="@+id/expandableCard2">

        <LinearLayout
           android:id="@+id/staticHeader2">
        </LinearLayout>

        <LinearLayout
           android:id="@+id/expandableContent2">
        </LinearLayout>

    </androidx.cardview.widget.CardView>


</LinearLayout>

还有我的代码 (kotlin)：

// toggle
if( expandableContent1.visibility == View.GONE ){

      // apply to the root scene
      TransitionManager.beginDelayedTransition(transition_container )

      // change the visibility of the expandable content
      expandableContent1.visibility = View.VISIBLE
      arrowBtn.setImageResource( R.drawable.ic_arrow_up_24)

} else {

      // apply to the root scene
      TransitionManager.beginDelayedTransition(transition_container )

      // change the visibility of the expandable content
      expandableContent1.visibility = View.GONE
      arrowBtn.setImageResource( R.drawable.ic_arrow_down_24)
}

android 中的重叠 TransitionManager 动画

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