工具栏标题未显示

Question

两种情况下都没有显示工具栏标题是否已折叠.下面是我的布局

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

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

            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/collapsing_toolbar"
                android:layout_width="match_parent"
                android:layout_height="@dimen/collapsing_toolbar_height"
                app:layout_scrollFlags="scroll|exitUntilCollapsed"
                app:contentScrim="?attr/colorPrimary"
                app:expandedTitleTextAppearance="@android:color/transparent"
                android:fitsSystemWindows="true">

                <ImageView
                    android:id="@+id/header_image"
                    android:layout_width="match_parent"
                    android:layout_height="@dimen/collapsing_toolbar_height"
                    android:scaleType="centerCrop"
                    android:fitsSystemWindows="true"
                    android:contentDescription="@string/app_name"
                    android:src="@mipmap/ic_launcher"
                    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"
                    android:title="@string/app_name"
                    app:layout_collapseMode="pin" />

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

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



    <android.support.v4.widget.NestedScrollView
        android:id="@+id/scroll"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:clipToPadding="false"
        android:layout_marginBottom="100dp"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

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

            <FrameLayout
                android:id="@+id/container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"></FrameLayout>


        </RelativeLayout>



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

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <android.support.design.widget.BottomNavigationView
            android:id="@+id/bottom_navigation"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            app:itemBackground="@color/faint_black"
            app:itemIconTint="@color/white"
            app:itemTextColor="@color/menu_item_color_change"
            app:menu="@menu/menu" />
    </RelativeLayout>




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

Answer 1

CollapsingToolBarLayout的标题具有优先权ToolBar(是的,即使你没有设置它).加

 app:titleEnabled="false"

要CollapsingToolBarLayout禁用它,并且ToolBar应该显示的那个.它应该是

  app:title

而不是android:title因为您正在使用支持库中的ToolBar