将应用栏滚动视图行为添加到CoordinatorLayout中的多个视图

时间:2015-09-08 19:16:54

标签: android androiddesignsupport android-coordinatorlayout android-collapsingtoolbarlayout android-appbarlayout

我希望将滚动支持添加到CoordinatorLayout以及AppBarLayoutCollapsingToolbarLayout的单个可滚动子视图中。滚动RecyclerViewAppBarLayout(下面的压缩代码)时,应用栏及其内容会成功滚动和折叠。但是,当尝试在LinearLayout上方的RecyclerView上发起滚动事件时,没有任何结果,因为LinearLayout不知道滚动或折叠视图。

目标是让LinearLayout充当RecyclerView的粘性标头和AppBarLayout的页脚,并获得与RecyclerView相同的滚动行为,类似到Spotify's shuffle play/available offline header。事实上,如果appbar_scrolling_view_behavior layout_behavior可以与LinearLayout类似地应用于RecyclerView,那会很棒,但我想在不可滚动时会忽略该行为观点。是否有人知道此方法的解决方法,不需要在LinearLayout中将RecyclerView视图作为一行实现?

<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">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar_layout"
        android:layout_width="match_parent"
        android:layout_height="@dimen/collapsible_app_bar_height"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/gradient_banner"
            app:contentScrim="@color/background_content_frame"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:id="@+id/image_header"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/some_image"
                app:layout_collapseMode="parallax"/>

            <android.support.v7.widget.Toolbar
                android:id="@+id/collapsible_toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
                app:layout_collapseMode="pin"/>

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

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="@dimen/slide_handle_height"
        android:orientation="horizontal"
        android:background="@color/slide_handle"
        android:gravity="center_vertical">

        <!-- three buttons -->

    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="@dimen/slide_handle_height"
        android:scrollbars="vertical"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

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

5 个答案:

答案 0 :(得分:45)

您不需要变通方法或奇怪的东西。库支持此行为。只需将LinearLayout替换为RecyclerView,并将其放在<android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="wrap_content" app:layout_behavior="@string/appbar_scrolling_view_behavior"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:gravity="center"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="15dp" android:text="Button text"/> </LinearLayout> </android.support.v4.widget.NestedScrollView>

下方
RecyclerView

此外,您需要将其放在 android:paddingTop="30dp" android:clipToPadding="false" 中,以便在LinearLayout后面显示:

<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">

<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar_layout"
    android:layout_width="match_parent"
    android:layout_height="@dimen/collapsible_app_bar_height"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/gradient_banner"
        app:contentScrim="@color/background_content_frame"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <ImageView
            android:id="@+id/image_header"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/some_image"
            app:layout_collapseMode="parallax"/>

        <android.support.v7.widget.Toolbar
            android:id="@+id/collapsible_toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:layout_collapseMode="pin"/>

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

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

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="@dimen/slide_handle_height"
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    android:paddingTop="30dp"
    android:clipToPadding="false"/>

<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:gravity="center">

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="15dp"
            android:text="Button text"/>

    </LinearLayout>

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

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

这就是它的样子:

Layout

这不是一个好设计,但它是一个解决方案。您可以在LinearLayout内放置一个更好的#include <iostream> #include <fstream> #include <string> #include <cmath> using namespace std; int main() { int column, row, total, counter; column = 1; row = 1; cout << "x-dimensions of array: "; cin >> row; cout << "y-dimensions of array: "; cin >> column; total = row*column; double myArray[row][column]; double *myPtr; myPtr = *myArray; string input; cout << "Enter text file name: "; cin >> input; ifstream inFile; inFile.open(input); //Check for Error if (inFile.fail()){ cerr << "Error opening file" << endl; exit(1); } for (int i = 0; i < total; i++){ inFile >> *(myPtr+i); } ,使其像Spotify一样。

修改:添加了视频

Demo video Demo video 2

答案 1 :(得分:8)

这是位于ToolbarRecyclerView之间的粘性标题:

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:layout_anchor="@+id/app_bar_layout"
    app:layout_anchorGravity="center|bottom"
    android:text="Shuffle Play"/>

为避免与Toolbar重叠,您可以设置与AppBarLayoutCollapsingToolbarLayout不同的高度:

<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:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="240dp"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    android:fitsSystemWindows="true">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="210dip"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|exitUntilCollapsed"
        android:fitsSystemWindows="true"
        app:contentScrim="?attr/colorPrimary"
        app:expandedTitleMarginStart="48dp"
        app:expandedTitleMarginBottom="30dp"
        app:expandedTitleMarginEnd="64dp">

        <ImageView
            android:id="@+id/backdrop"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:fitsSystemWindows="true"
            app:layout_collapseMode="parallax" />

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:layout_collapseMode="pin" />
    </android.support.design.widget.CollapsingToolbarLayout>

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


<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="@dimen/slide_handle_height"
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:layout_anchor="@id/appbar"
    app:layout_anchorGravity="center|bottom"
    android:text="Shuffle Play"/>
</android.support.design.widget.CoordinatorLayout>

视频演示:

Demo video

此外,您可以将高度设置为Toolbar,但需要使用自定义行为(例如此项目CoordinatorLayoutExample)制作自定义标题。我用一个没有行为的自定义标题制作了它:

<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:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="240dp"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    android:fitsSystemWindows="true">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|exitUntilCollapsed"
        android:fitsSystemWindows="true"
        app:collapsedTitleTextAppearance="@style/TransparentText"
        app:expandedTitleTextAppearance="@style/TransparentText"
        app:contentScrim="?attr/colorPrimary">

        <ImageView
            android:id="@+id/backdrop"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:fitsSystemWindows="true"
            app:layout_collapseMode="parallax" />

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_height="80dp"
            android:layout_width="match_parent"
            android:minHeight="?attr/actionBarSize"
            android:gravity="top"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:layout_collapseMode="pin" >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Title"
                android:textSize="20sp"
                android:textColor="@android:color/white"/>
        </android.support.v7.widget.Toolbar>
    </android.support.design.widget.CollapsingToolbarLayout>

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


<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="@dimen/slide_handle_height"
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:layout_anchor="@id/appbar"
    app:layout_anchorGravity="center|bottom"
    android:text="Shuffle Play"/>
</android.support.design.widget.CoordinatorLayout>

样式:

<style name="TransparentText" parent="@android:style/TextAppearance">
    <item name="android:textColor">#00000000</item>
</style>

视频演示:

enter image description here

答案 2 :(得分:6)

经过一些试验和错误,这是最终为我工作的布局的精简版本:

<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/coordinator_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar_layout"
    android:layout_width="match_parent"
    android:layout_height="@dimen/collapsible_app_bar_height"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:contentScrim="@color/background_content_frame"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <ImageView
            android:id="@+id/image_header"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="center_horizontal"
            android:layout_marginBottom="@dimen/button_bar_height"
            android:scaleType="centerCrop"
            android:background="@android:color/transparent"
            android:src="@drawable/default_header"
            android:contentDescription="@string/description_content_image"
            app:layout_collapseMode="parallax"/>

        <ImageView
            android:id="@+id/image_header_gradient"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginBottom="@dimen/button_bar_height"
            android:src="@drawable/scrim_top_bottom_banner"
            app:layout_collapseMode="parallax"
            tools:ignore="ContentDescription"/>

        <android.support.v7.widget.Toolbar
            android:id="@+id/collapsible_toolbar"
            android:layout_width="match_parent"
            android:layout_height="104dp"
            android:minHeight="?attr/actionBarSize"
            android:gravity="top"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:contentInsetStart="0dp"
            app:titleMargins="0dp"
            app:layout_collapseMode="pin"/>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/landing_header_button_margin_horizontal"
            android:layout_marginEnd="@dimen/landing_header_button_margin_horizontal"
            android:layout_marginBottom="@dimen/button_bar_height"
            android:layout_gravity="bottom"
            android:gravity="center_vertical"
            app:layout_collapseMode="parallax">

            <Button
                android:id="@+id/button_one"
                android:layout_alignParentStart="true"
                android:drawableStart="@drawable/selector_one"
                android:textColor="@color/alabaster_white"
                android:visibility="gone"
                style="@style/Button.TextCount"/>

            <Button
                android:id="@+id/button_two"
                android:layout_alignParentEnd="true"
                android:layout_gravity="end"
                android:drawableStart="@drawable/selector_two"
                android:textColor="@color/alabaster_white"
                android:visibility="gone"
                style="@style/Button.TextCount"/>

        </RelativeLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="@dimen/button_bar_height"
            android:layout_gravity="bottom"
            android:gravity="center_vertical"
            android:orientation="horizontal"
            android:background="@color/slide_handle">

            <!-- three buttons -->

        </LinearLayout>

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

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

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

答案 3 :(得分:3)

Ryan的方法很好但可能有点复杂。通过将CoordinatorLayout的属性用于其子级,您可以更轻松地实现相同的效果。使用

layout_anchor="@id/app_bar_layout"

layout_anchorGravity="bottom|right|end"

在视图中(包含您的按钮)并将其放在Toolbar下。同时增加此视图的高程,因为当您向下滚动时,Toolbar将与您的视图重叠。

答案 4 :(得分:2)

您可以尝试

    <android.support.design.widget.CoordinatorLayout>
         <android.support.design.widget.AppBarLayout>
             <!-- another xml code -->
         </<android.support.design.widget.AppBarLayout>

         <android.support.v4.widget.NestedScrollView
              android:layout_width="match_parent"
              android:layout_height="match_parent"              
              app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior">

<!-- your recyler view or button or textview xml code -->        
   </android.support.v4.widget.NestedScrollView>

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

您可以在strings.xml

中编写此代码
<string name="appbar_scrolling_view_behavior" translatable="false">android.support.design.widget.AppBarLayout$ScrollingViewBehavior</string>

,您可以使用:

app:layout_behavior="@strings/appbar_scrolling_view_behavior">