在Android中向上滚动内容时如何隐藏工具栏

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问题描述

当我滚动带有内容的文本和图像时，我试图隐藏我的工具栏，这里
当我向上滚动内容时如何使用scrollView获取滚动内容，如何隐藏工具栏，请任何人告诉我

I am trying to hide my tool bar when i scroll my text and image with content ,here i use scrollView for getting scroll content when ,when i scroll content up how to hide tool bar please any one tell me how to get

此处是我的XMl代码

content_main.XML

<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: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, 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, 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, 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, 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, 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
        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

<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" />

推荐答案

您必须在两种布局中进行很多更改。首先在 activity_main.XML 中使用 CoordinatorLayout ，如下所示（根据您的要求更改主题）。

you have to do many changes in your both layout. first use CoordinatorLayout in activity_main.XML like below(change theme as per your requirement).

<?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 。

还可以在 android.support内使用 app：layout_behavior = @ string / appbar_scrolling_view_behavior .v4.widget.NestedScrollView 如下。

also use app:layout_behavior="@string/appbar_scrolling_view_behavior" inside android.support.v4.widget.NestedScrollView like below.

<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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