Android - 工具栏重叠锚

时间:2017-02-15 10:06:50

标签: android xml android-layout

我希望ImageView位于我的工具栏和内容之间(带内容的布局)。 工具栏无法展开。

我怎样才能做到这一点?

我是这样做的:

    <?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:layout_width="match_parent"
       android:layout_height="wrap_content">

        <android.support.design.widget.AppBarLayout
           android:id="@+id/appBarLayout"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           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"
               app:titleTextAppearance="@style/AppTheme.ToolbarText" />
        </android.support.design.widget.AppBarLayout>

        <android.support.percent.PercentRelativeLayout
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           android:layout_marginTop="?attr/actionBarSize"
           android:orientation="vertical">

            <android.support.percent.PercentRelativeLayout
               android:id="@+id/viewB"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
               android:background="@drawable/advantages_background"
               app:layout_heightPercent="100%">

                ....
            </android.support.percent.PercentRelativeLayout>
        </android.support.percent.PercentRelativeLayout>

        <FrameLayout
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           app:layout_anchor="@id/appBarLayout"
           app:layout_anchorGravity="bottom|center">

            <ImageView
               android:id="@+id/fab"
               android:layout_width="70dp"
               android:layout_height="70dp"
               android:src="@drawable/advantages_circle" />
...
        </FrameLayout>
    </android.support.design.widget.CoordinatorLayout>

我得到了这个(工具栏与我的圆圈重叠):

image

我该如何解决?

我希望ImageView(我的FrameLayout)重叠工具栏(锚点)

4 个答案:

答案 0 :(得分:5)

将此行添加到framlayout

android:elevation="20dp"

答案 1 :(得分:2)

app:layout_behavior="@string/appbar_scrolling_view_behavior"添加到FrameLayout enter image description here

<?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:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBarLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        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>

    <android.support.percent.PercentRelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="?attr/actionBarSize"
        android:orientation="vertical">

        <android.support.percent.PercentRelativeLayout
            android:id="@+id/viewB"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@android:color/holo_blue_dark"
            app:layout_heightPercent="100%" />
    </android.support.percent.PercentRelativeLayout>

    <FrameLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_anchor="@id/appBarLayout"
        app:layout_anchorGravity="bottom|center"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <ImageView
            android:id="@+id/fab"
            android:layout_width="70dp"
            android:layout_height="70dp"
            android:src="@mipmap/ic_launcher" />
    </FrameLayout>
</android.support.design.widget.CoordinatorLayout>

如果您想要重叠到工具栏中,请添加app:behavior_overlapTop="20dp"

答案 2 :(得分:1)

如果您将AppBarLayout更改为FrameLayout

,这将有效
<?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:layout_width="match_parent"
       android:layout_height="wrap_content">

        <FrameLayout
           android:id="@+id/appBarLayout"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           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"
               app:titleTextAppearance="@style/AppTheme.ToolbarText" />
        </FrameLayout>

        <android.support.percent.PercentRelativeLayout
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           android:layout_marginTop="?attr/actionBarSize"
           android:orientation="vertical">

            <android.support.percent.PercentRelativeLayout
               android:id="@+id/viewB"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
               android:background="@drawable/advantages_background"
               app:layout_heightPercent="100%">

                ....
            </android.support.percent.PercentRelativeLayout>
        </android.support.percent.PercentRelativeLayout>

        <FrameLayout
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           app:layout_anchor="@id/appBarLayout"
           app:layout_anchorGravity="bottom|center">

            <ImageView
               android:id="@+id/fab"
               android:layout_width="70dp"
               android:layout_height="70dp"
               android:src="@drawable/advantages_circle" />
...
        </FrameLayout>
    </android.support.design.widget.CoordinatorLayout>

这就是它的样子: FAB

答案 3 :(得分:0)

添加android:margineTop =&#34;?attr / actionBarSize&#34;在你的framlayout。