当我在android中滚动内容时如何隐藏ToolBar

概述当我用内容滚动文本和图像时,我试图隐藏我的工具栏, 在这里我使用scrollView获取滚动内容时,当我滚动内容如何隐藏工具栏时,请任何人告诉我如何获取 这是我的XMl代码 content_main.XML <android.support.v4.widget.NestedScrollViewxmlns:app="http://schemas.android.com/apk/res-auto" 当我用内容滚动文本和图像时,我试图隐藏我的工具栏,
在这里我使用scrollVIEw获取滚动内容时,当我滚动内容如何隐藏工具栏时,请任何人告诉我如何获取

这是我的XMl代码

content_main.XML

<androID.support.v4.Widget.nestedScrollVIEwxmlns:app="http://schemas.androID.com/apk/res-auto"androID:layout_wIDth="match_parent"androID:layout_height="match_parent"xmlns:androID="http://schemas.androID.com/apk/res/androID"app:layout_behavior="@string/appbar_scrolling_vIEw_behavior"><linearLayout    androID:orIEntation="vertical"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"><linearLayout    androID:paddingtop="?androID:attr/actionbarSize"    androID:orIEntation="vertical"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent">    <TextVIEw        androID:layout_marginleft="10dp"        androID:layout_marginRight="10dp"        androID:ID="@+ID/textone"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:textSize="23dp"        androID:textStyle="bold"        androID:text="hello world jheds sdjhs jds sjbs skJs ksJs kksJs ksj sdd dskd Js sk "/>    <ImageVIEw        androID:ID="@+ID/imge"        androID:layout_wIDth="match_parent"        androID:layout_height="250dp"        androID:src="@drawable/imag_bg"/>    <TextVIEw        androID:ID="@+ID/texttwo"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:layout_marginleft="10dp"        androID:layout_marginRight="10dp"        androID:text="Pretty good,the Toolbar is moving along with the List and getting back just as we expect it to. This is thanks to the restrictions that we put on the mToolbarOffset variable.        If we would omit checking if it’s bigger than 0 and lower than mToolbarHeight then when        we would scroll         up our List,the Toolbar would move along far away off the screen,so to show it back you         would have to scroll the List down to 0. Right Now it just scrolls up to mToolbarHeight         position and not more so it’s “sitting” right above the List all of the time and if we         start scrolling down,we can see it immediately showing.          up our List,we can see it immediately showing          up our List,we can see it immediately showing        It works pretty well,but this is not what we want. It feels weird that you can        stop it in the mIDdle of        the         scroll and the Toolbar will stay half visible. Actually this is how it’s done in Google Play         Games app        which I consIDer as a BUG        It works pretty well,but this is not what we want. It feels weird that you can        stop it in the mIDdle of        the         scroll and the Toolbar will stay half visible. Actually this is how it’s done in Google Play         Games app        which I consIDer as a BUG        It works pretty well,but this is not what we want. It feels weird that you can        stop it in the mIDdle of        the         scroll and the Toolbar will stay half visible. Actually this is how it’s done in Google Play         Games app        which I consIDer as a BUG."/></linearLayout><VIEw    androID:layout_wIDth="wrap_content"    androID:layout_height="30dp" /><linearLayout    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent">    <button         androID:text="hai"         androID:layout_wIDth="160dp"         androID:layout_height="match_parent" />    <button         androID:text="hello"         androID:layout_wIDth="160dp"         androID:layout_height="match_parent" /></linearLayout>

activity_main.xml中

<androID.support.design.Widget.AppbarLayout    androID:layout_height="wrap_content"    androID:layout_wIDth="match_parent"     androID:theme="@style/Apptheme.AppbarOverlay">    <androID.support.v7.Widget.Toolbar         androID:ID="@+ID/toolbar"        androID:layout_wIDth="match_parent"         androID:layout_height="?attr/actionbarSize"        androID:background="?attr/colorPrimary"         app:popuptheme="@style/Apptheme.PopupOverlay" /></androID.support.design.Widget.AppbarLayout><include layout="@layout/content_main" />

解决方法 你必须在你的两个布局中做很多改变.首先在activity_main.XML中使用CoordinatorLayout,如下所示(根据您的要求更改主题).

<?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"    androID:ID="@+ID/main_content"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"    androID:fitsSystemwindows="true">    <androID.support.design.Widget.AppbarLayout        androID:layout_wIDth="match_parent"        androID:layout_height="wrap_content"        androID:theme="@style/themeOverlay.AppCompat.Dark.Actionbar">        <androID.support.v7.Widget.Toolbar            androID:ID="@+ID/toolbar"            androID:layout_wIDth="match_parent"            androID:layout_height="?attr/actionbarSize"            androID:background="?attr/colorPrimary"            androID:theme="@style/themeOverlay.AppCompat.Dark.Actionbar"            app:layout_scrollFlags="scroll|enteralways"            app:popuptheme="@style/themeOverlay.AppCompat.light" />    </androID.support.design.Widget.AppbarLayout>    <include layout="@layout/content_main" /></androID.support.design.Widget.CoordinatorLayout>

在content_main.XML中使用androID.support.v4.Widget.nestedScrollVIEw而不是ScrollVIEw.

也可以在androID.support.v4.Widget.nestedScrollVIEw中使用app：layout_behavior =“@ string / appbar_scrolling_vIEw_behavior”,如下所示.

<androID.support.v4.Widget.nestedScrollVIEw        xmlns:app="http://schemas.androID.com/apk/res-auto"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        xmlns:androID="http://schemas.androID.com/apk/res/androID"         app:layout_behavior="@string/appbar_scrolling_vIEw_behavior">        <linearLayout            androID:layout_wIDth="match_parent"            androID:layout_height="match_parent"            androID:orIEntation="vertical">            <TextVIEw                androID:ID="@+ID/textone"                androID:layout_wIDth="match_parent"                androID:layout_height="match_parent"                androID:text="hello world jheds sdjhs jds sjbs skJs ksJs kksJs ksj sdd dskd Js sk "                androID:textSize="25dp"                androID:textStyle="bold" />            /// Add your other code here            </linearLayout>    </androID.support.v4.Widget.nestedScrollVIEw>

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