Android LayoutTransition消失和更改不同时发生
我在这里有一个自定义的“底部操作栏”:,它随某些类型的网页(例如文章/非文章)出现和消失。我使用Android LayoutTransition消失和更改不同时发生,android,objectanimator,layouttransition,Android,Objectanimator,Layouttransition,我在这里有一个自定义的“底部操作栏”:,它随某些类型的网页(例如文章/非文章)出现和消失。我使用animateLayoutTransition设置了最外层的LinearLayout,并创建了一个不同的LayoutTransition对象,但我希望在webview调整其高度的同时,该条消失。需要明确的是,条形图(relativeLayout)被设置为View.GONE,由于条形图已消失,webView应展开以匹配父视图(由于布局权重),但它不会同时执行这两项操作。我试图更改LayoutTransi
animateLayoutTransition
设置了最外层的LinearLayout
,并创建了一个不同的LayoutTransition
对象,但我希望在webview调整其高度的同时,该条消失。需要明确的是,条形图(relativeLayout)被设置为View.GONE
,由于条形图已消失,webView应展开以匹配父视图(由于布局权重),但它不会同时执行这两项操作。我试图更改LayoutTransition.setDuration()
和.setStartDelay()
ArticleActivityXML:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:id="@+id/container_article"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="app.morningsignout.com.morningsignoff.ArticleActivity"
tools:ignore="MergeRootFrame"
android:background="@android:color/white"
android:animateLayoutChanges="true">
<app.com.morningsignout.morningsignout.CustomWebView
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="@+id/webView_article"
android:layout_gravity="center"
android:layout_weight="9" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:layout_weight="0"
隐藏\u action\u bar.xml:
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:propertyName="translationY"
android:duration="300"
android:valueFrom="0"
android:valueTo="?android:attr/actionBarSize"/>
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:propertyName="translationY"
android:duration="300"
android:valueFrom="?android:attr/actionBarSize"
android:valueTo="0"/>
show_action_bar.xml:
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:propertyName="translationY"
android:duration="300"
android:valueFrom="0"
android:valueTo="?android:attr/actionBarSize"/>
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:propertyName="translationY"
android:duration="300"
android:valueFrom="?android:attr/actionBarSize"
android:valueTo="0"/>
我认为
LayoutTransition.CHANGING
animation可以让它工作,但是不行。如何让webView的高度更改和删除栏同时发生?尽管设置了排队的持续时间和启动延迟,但它不起作用。我认为问题在于更改必须发生在视图消失后,因为需要知道视图消失后的高度。或者这不是一个改变的动画。我想出来了。事实证明,我需要改变出现和改变消失,使它更平滑,而不是改变。这并不完美,但现在两个动画同时发生。我尝试了实际的TopActionBar的hide()/show()函数,我认为这是正常的
LinearLayout container = (LinearLayout) findViewById(R.id.container_article);
LayoutTransition customTransition = new LayoutTransition();
// customTransition.enableTransitionType(LayoutTransition.CHANGING);
// customTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
// customTransition.disableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
customTransition.setAnimator(LayoutTransition.APPEARING, showArticleBar);
customTransition.setAnimator(LayoutTransition.DISAPPEARING, hideArticleBar);
customTransition.setStartDelay(LayoutTransition.APPEARING, 0);
customTransition.setStartDelay(LayoutTransition.DISAPPEARING, 0);
customTransition.setStartDelay(LayoutTransition.CHANGE_APPEARING, 0);
customTransition.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 0);
// customTransition.setStartDelay(LayoutTransition.CHANGING, 0);
customTransition.setDuration(LayoutTransition.APPEARING, showArticleBar.getDuration());
customTransition.setDuration(LayoutTransition.DISAPPEARING, hideArticleBar.getDuration());
customTransition.setDuration(LayoutTransition.CHANGE_APPEARING, showArticleBar.getDuration());
customTransition.setDuration(LayoutTransition.CHANGE_DISAPPEARING, hideArticleBar.getDuration());
// customTransition.setDuration(LayoutTransition.APPEARING, showArticleBar.getDuration());
container.setLayoutTransition(customTransition);
这就产生了一个问题,即webview在新网页上仍然保持滚动位置,这是错误的(应该在新网页的页面顶部)。我通过在线性布局中包含webview来修复它
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:id="@+id/container_article"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="app.morningsignout.com.morningsignoff.ArticleActivity"
tools:ignore="MergeRootFrame"
android:background="@android:color/transparent"
android:animateLayoutChanges="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9">
<app.com.morningsignout.morningsignout.CustomWebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/webView_article"
android:layout_gravity="center" />
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:layout_weight="0"...