應用欄定位不正確

Question

在協調器布局中，我包括了另一個布局，該布局使AppBarLayout移至頂部並位於狀態欄下方，換句話說，工具欄的高度是其實際高度的一半，為什么會發生這種情況？ 而且工具欄的標題位置不正確。

<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="match_parent"
android:id="@+id/ma_main">



<android.support.design.widget.AppBarLayout
    android:id="@+id/ma_appbar_layout"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize">
<android.support.v7.widget.Toolbar
    android:id="@+id/ma_toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:popupTheme="@style/AppTheme.popup"/>
</android.support.design.widget.AppBarLayout>


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


<android.support.design.widget.FloatingActionButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/ma_fab"
    app:layout_anchor="@id/ma_recycler_layout"
    app:layout_anchorGravity="bottom|end"
    android:layout_margin="15dp"
    app:fabSize="normal"
    android:src="@drawable/pencil"
    android:elevation="8dp" />
   </android.support.design.widget.CoordinatorLayout>

和包含的布局

<LinearLayout 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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/activity_main"
android:id="@+id/ma_recycler_layout">



<android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/ma_recyclerView"
    android:visibility="invisible">

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

<ProgressBar
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:layout_marginTop="2dp"
    android:padding="5dp"
    android:id="@+id/ma_progressbar"
    android:visibility="visible"
    android:indeterminate="true"
    /></LinearLayout>

Answer 1

在xml中進行如下更改。

<RelativeLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/ma_appbar_layout"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize">

        <android.support.v7.widget.Toolbar
            android:id="@+id/ma_toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:popupTheme="@style/AppTheme.popup" />
    </android.support.design.widget.AppBarLayout>

</RelativeLayout>

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

<android.support.design.widget.FloatingActionButton
    android:id="@+id/ma_fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="15dp"
    android:elevation="8dp"
    android:src="@drawable/pencil"
    app:fabSize="normal"
    app:layout_anchor="@id/ma_recycler_layout"
    app:layout_anchorGravity="bottom|end" />

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

然后像下面的recyler視圖布局..

<RelativeLayout 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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:id="@+id/ma_recycler_layout">



<android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/ma_recyclerView"
    android:visibility="invisible">

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

<ProgressBar
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="2dp"
    android:padding="5dp"
    android:id="@+id/ma_progressbar"
    android:visibility="visible"
    android:indeterminate="true"
    android:layout_centerInParent="true"
    /></RelativeLayout>