如何在过渡过程中设置背景？

Question

你好，我是新的过渡。在过渡期间，您可以看到隐藏的白色背景。

​

练习A->练习B

(在A中设置动画)

private fun setupWindowAnimations() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // A (general activity) --> B ((this , detail activity))
            val slide = Slide(Gravity.LEFT)
            slide.duration = 500
            window.enterTransition = slide

            // A (general activity) <-- B ((this, detail activity))
            val fade = Fade()
            fade.duration = 1000
            window.returnTransition = fade

        }

(viewHolder-A中的动画触发器)

override fun onClick(view: View?) {
        if (view != null) {
            val intent: Intent = Intent(view.context, DisksActivity::class.java)
            val bundle: Bundle = Bundle()
            bundle.putString(view.context.getString(R.string.EXTRA_DISK_TITLE), itemView.tag.toString())
            intent.putExtras(bundle)
            val sharedView: View = itemView.findViewById(R.id.cd_room_title)
            val transitionName: String  = view.context.getString(R.string.transition_disk_name_title)
            val options = ActivityOptionsCompat.makeSceneTransitionAnimation(
                    view.context as Activity, sharedView, transitionName)
            view.context.startActivity(intent,options.toBundle())
        }

    }

(在B中设置动画)

private fun setupWindowAnimations() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // A (general activity) --> B ((this , detail activity))
            val slide = Slide(Gravity.LEFT)
            slide.duration = 500
            window.enterTransition = slide

            // A (general activity) <-- B ((this, detail activity))
            val fade = Fade()
            fade.duration = 1000
            window.returnTransition = fade

        }
}

(两者的主布局)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@drawable/rock_background"
  tools:context=".presentation.MainActivity">

​

​

如何在过渡过程中设置背景？或者，您是否知道一些解决方法？

谢谢!

Answer 1

使用第二个活动的主题设置windowBackground可能会有所帮助。

创建一个可绘制的，并将其命名为background.xml，以设置为第二个带有显示的活动的窗口背景，直到加载布局:-

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/colorPrimary" />
</layer-list>

下一步是为styles.xml中的第二个活动创建主题

<style name="Theme" parent="Theme.AppCompat.NoActionBar">

    <item name="android:windowBackground">@drawable/background</item>

</style>

现在，通过在清单中的activity标记内设置android:theme="@style/Theme"属性来设置第二个活动的主题。

希望这能有所帮助。