android-工具栏与LinearLayout的GridView重叠

工具栏与线性布局的GridView重叠,因此第一行中的80％以上的内容被其上方的工具栏隐藏.

我在activity_main中添加了FloatingActionButton之后,就发生了这种情况.我试图将Toolbar包含在LinearLayout中,但它给了我一个强制转换例外.如果可以在LinearLayout中包含工具栏,则可以.另外,我尝试不通过使用marginTop或paddingTop静态地处理它.

这是现在的样子：Screenshot

这是xml文件：

activity_main.xml

<?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"
android:fitsSystemWindows="true"
tools:context="edu.ahduni.seas.gyapak.MainActivity">

<android.support.design.widget.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>

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

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_margin="@dimen/fab_margin"
    android:src="@android:drawable/ic_dialog_email" />

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

content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/textlayout"
tools:context="edu.ahduni.seas.gyapak.MainActivity">

    <GridView xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/grid"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:columnWidth="90dp"
        android:numColumns="auto_fit"
        android:verticalSpacing="10dp"
        android:horizontalSpacing="10dp"
        android:stretchMode="columnWidth"
        android:gravity="center"
        android:padding="10dp" />
</LinearLayout>

解决方案

显然,对此有许多解决方案：(信用转到答案和评论讨论中)

1.在content_main.xml的LinearLayout中包含android：layout_marginTop =“？attr / actionBarSize” android：paddingTop =“ AnydpThatYouFurtherWantToAdjust”信誉：@VladimirJovanović

2.包含app：layout_behavior =“ @ string / appbar_scrolling_view_behavior”
content_main.xml的LinearLayout中的android：paddingTop =“ AnydpThatYouFurtherWantToAdjust”信誉：@Burhanuddin Rashid

3.这很长,请检查@AbhayBohra的答案,然后在content_main.xml的LinearLayout中包含android：paddingTop =“ AnydpThatYouFurtherWantToAdjust”信誉：@Abhay Bohra和@Rahul Sharma

解决方法:

尝试将appBarLayout放入并在LinearLayout中以垂直方向包含语句

<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:fitsSystemWindows="true"
    tools:context="edu.ahduni.seas.gyapak.MainActivity">

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

        <android.support.design.widget.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>

        <include layout="@layout/content_main" />
    </LinearLayout>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_dialog_email" />

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