问题：

折叠工具栏和nestedscrollview无法平滑滚动

袁建木

2023-03-14

嵌套滚动视图在向下滚动时滚动流畅，但在向上滚动时滚动缓慢。向上滚动时折叠工具栏（带有图像视图和框架布局）不会呈现其内容（保持空白）。我已经尝试了折叠工具栏中的每个标志。

<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:id="@+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">


<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"

        app:contentScrim="?attr/colorPrimary"

        app:layout_scrollFlags="scroll|exitUntilCollapsed">


        <ImageView
            android:id="@+id/backdrop"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:minHeight="100dp"
            android:fitsSystemWindows="true"
            android:scaleType="centerCrop"
            android:src="@drawable/pic"
            app:layout_collapseMode="parallax"
            app:layout_collapseParallaxMultiplier="0.5"
            app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"/>

        <include
            android:id="@+id/framelayout"
            layout="@layout/header_layout"
            app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
            android:minHeight="100dp"/>


    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>


<!-- Your Scrollable View -->
<android.support.v4.widget.NestedScrollView
    android:id="@+id/nested"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="fill_vertical"

    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingTop="24dp">



      </LinearLayout>



</android.support.v4.widget.NestedScrollView>


<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="#da1b75"
    android:orientation="horizontal"
    android:textColor="#ffffff"
    android:theme="@style/ThemeOverlay.AppCompat.Light"
    app:layout_anchor="@id/appbar"
    app:layout_collapseMode="pin"
    app:title="">



</android.support.v7.widget.Toolbar>

共有3个答案

姜景焕

2023-03-14

我想你忘记了协调员布局的结束标签。另外，将工具栏放在折叠工具栏布局上

<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:id="@+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fitsSystemWindows="true"

            app:contentScrim="?attr/colorPrimary"

            app:layout_scrollFlags="scroll|exitUntilCollapsed">


            <ImageView
                android:id="@+id/backdrop"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="100dp"
                android:fitsSystemWindows="true"
                android:scaleType="centerCrop"
                android:src="@drawable/pic"
                app:layout_collapseMode="parallax"
                app:layout_collapseParallaxMultiplier="0.5"
                app:layout_scrollFlags="scroll|exitUntilCollapsed" />

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="#da1b75"
                android:orientation="horizontal"
                android:textColor="#ffffff"
                android:theme="@style/ThemeOverlay.AppCompat.Light"
                app:layout_anchor="@id/appbar"
                app:layout_collapseMode="pin"
                app:title="Your title">

            </android.support.v7.widget.Toolbar>


<!-- What is this for?

            <include
                android:id="@+id/framelayout"
                layout="@layout/header_layout"
                app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
                android:minHeight="100dp"/>
-->

        </android.support.design.widget.CollapsingToolbarLayout>
    </android.support.design.widget.AppBarLayout>


    <!-- Your Scrollable View -->
    <android.support.v4.widget.NestedScrollView
        android:id="@+id/nested"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="fill_vertical"

        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:paddingTop="24dp">



          </LinearLayout>



    </android.support.v4.widget.NestedScrollView>

</android.support.design.widget.CoordinatorLayout>

卫骏

2023-03-14

更新：您可以通过右键单击ANDROID工作室中的图像并将图像转换为webp来减小图像大小。这将大大减小图像大小

非常简单。我挣扎了很久，最终知道这是我放在ImageView的src中的高分辨率图像的问题。解决方案:降低图像的分辨率，保持尺寸不变。(大概是用Photoshop)。

为我工作

冯嘉荣

2023-03-14

使嵌套滚动视图的直接子元素可点击（如果您只有一个子元素，请添加布局并将所有UI元素放入其中并使布局可点击）
android： clickable="true"
我面临类似的问题，这对我有用！

这是我一直在处理的代码 -

<?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="test.testrecycler.MaterialActivity"
>

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="300dp"
    android:theme="@style/AppTheme.AppBarOverlay"
    android:fitsSystemWindows="true"
    >
    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:contentScrim="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|exitUntilCollapsed"
        app:expandedTitleTextAppearance="@style/expandedappbar"
        app:collapsedTitleTextAppearance="@style/collapsedappbar"
        app:statusBarScrim="@color/colorPrimaryDark"
        >
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/sample"
            android:scaleType="centerCrop"
            app:layout_collapseMode="parallax" />
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_collapseMode="pin" />

    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>

<include layout="@layout/content_material" />

</android.support.design.widget.CoordinatorLayout>

这是包含NestedScrollView的content_material.xml文件。它有一个可点击的子元素(TextView)。

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView 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:id="@+id/content_material"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="test.testrecycler.MaterialActivity"
tools:showIn="@layout/activity_material">

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clickable="true"
    android:text="This is an association football club formed in 1983, based in the town of Dover, Kent, England. In the 1989–90 season Dover
    Athletic won the Southern League championship, but failed to gain promotion to the Football Conference as the club's ground did not meet
    the required standard. Three seasons later the team won the title again and this time gained promotion to the Conference, where they spent
    nine seasons before being relegated. The club was transferred to the Isthmian League Premier Division in 2004, but another poor season led
    the club to a further relegation. After three seasons in the Isthmian League Division One South, the club won the championship and promotion
    back to the Premier Division, and the following season won another championship and promotion to Conference South. In the 2013–14 season,
    Dover defeated Ebbsfleet United to return to the Conference Premier after a twelve-year absence. Nicknamed the Whites for their white shirts,
    they have played at the Crabble Athletic Ground since the club's formation. Their best performance in the FA Cup was reaching the third
    round proper in both the 2010–11 and 2014–15 seasons. (Full article...)
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    his time gained promotion to the Conference, where they spent
    nine seasons before being relegated. The club was transferred to the Isthmian League Premier Division in 2004, but another poor season led
    the club to a further relegation. After three seasons in the Isthmian League Division One South, the club won the championship and promotion
    back to the Premier Division, and the following season won another championship and promotion to Conference South. In the 2013–14 season,
    Dover defeated Ebbsfleet United to return to the Conference Premier after a twelve-year absence. Nicknamed the Whites for their white shirts,
    they have played at the Crabble Athletic Ground since the club's formation. Their best performance in the FA Cup was reaching the third
    round proper in both the 2010–11 and 2014–15 seasons. (Full article...)" />
</android.support.v4.widget.NestedScrollView>

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