我有一个带有图片和文字的CollapsingToolbarLayout。以下是布局:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:tools="http://schemas.android.com/tools"
style="@style/Root"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
custom:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:layout_width="match_parent"
android:layout_height="@dimen/appbar_image_height"
android:fitsSystemWindows="true"
android:background="@color/red"
custom:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
style="@style/HmatchWmatch"
custom:contentScrim="@color/red"
custom:statusBarScrim="@color/primary_dark"
custom:expandedTitleTextAppearance="@android:color/transparent"
android:fitsSystemWindows="true"
custom:layout_scrollFlags="scroll|exitUntilCollapsed">
<RelativeLayout
style="@style/HmatchWmatch"
android:fitsSystemWindows="true"
custom:layout_collapseMode="parallax"
custom:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="@+id/toolbar_iv"
style="@style/HmatchWmatch"
android:scaleType="centerCrop"
tools:ignore="ContentDescription"/>
<TextView
android:id="@+id/toolbar_title"
style="@style/TextLarge.Pad"
android:layout_width="match_parent"
android:layout_alignParentBottom="true"
android:paddingBottom="@dimen/vpad"
android:background="@drawable/appbar_title_bg"
android:textColor="@android:color/white"
android:maxLines="2"/>
<TextView
android:id="@+id/toolbar_dm"
style="@style/TextSmall.Pad"
android:layout_width="match_parent"
android:layout_above="@id/toolbar_title"
android:paddingTop="@dimen/vpad"
android:background="@drawable/appbar_dm_bg"
android:textColor="@android:color/white"
android:maxLines="2"/>
</RelativeLayout>
<include
android:id="@+id/toolbar"
layout="@layout/toolbar"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<fragment
android:id="@+id/fragment"
android:name="com.Fragment"
style="@style/HmatchWmatch"
custom:layout_behavior="@string/appbar_scrolling_view_behavior"/>
<Button
android:id="@+id/sign_button"
style="@style/TextMedium"
android:layout_width="match_parent"
android:text="@string/sign_button_text"
android:textColor="@android:color/white"/>
</android.support.design.widget.CoordinatorLayout>
以下是工具栏的布局:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/change_red"
custom:layout_scrollFlags="scroll|enterAlways"
custom:layout_collapseMode="pin"
tools:ignore="Overdraw"/>
向上滚动时,图像消失,成为固定在顶部的工具栏。我想要实现的就像在Play商店应用程序中,当在特定应用程序中向上滚动时,图像在向上滚动时消失,并且当再次向下滚动时工具栏出现在屏幕中。在我的情况下如何实现这一目标?
我的问题是我希望Appbar在向上滚动时完全滚动屏幕,再次向下滚动时,工具栏应该出现。
答案 0 :(得分:1)
我尝试了各种方法,但我认为没有什么能帮助实现Play商店动画和设计的精确方式(使用设计库)!以下所有比赛几乎相似。这几乎与@MicheleLacorte在评论中建议的相似!
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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"
tools:context="idoandroid.scroll.ScrollingActivity">
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar"
android:layout_width="match_parent"
android:layout_height="@dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="@drawable/background"
app:layout_collapseMode="parallax"/>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/AppTheme.PopupOverlay"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_scrolling"/>
</android.support.design.widget.CoordinatorLayout>
如果您想要完全相同的实现,那么您必须查看一些第三方库!如果您有兴趣,只需给第三方库提供link!