我的应用对工具栏有不同的行为。在一种情况下,它显示活动的名称,而在其他情况下则不显示。我无法发现可以解释它的xmls的差异。知道为什么他们表现得如此不同吗?
没有文字的活动
<?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=".ScreenMenu">
<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_screen_menu" />
</android.support.design.widget.CoordinatorLayout>
没有文字的行为的内容xml
<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.ce.activizor.ScreenActivities"
tools:showIn="@layout/activity_screen_menu"
android:background="@color/background">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/background"
android:weightSum="5">
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3"
android:weightSum="2">
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="Calendar"
android:id="@+id/btn_screen_menu_cal"
android:layout_weight="1" />
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="What's on"
android:id="@+id/btn_screen_menu_whatson"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:weightSum="4">
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="Friends"
android:id="@+id/btn_screen_menu_friends"
android:layout_weight="1" />
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="Notifications"
android:id="@+id/btn_screen_menu_notifications"
android:layout_weight="1" />
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="Activities"
android:id="@+id/btn_screen_menu_act"
android:layout_weight="1" />
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="Add event"
android:id="@+id/btn_screen_menu_addevent"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
对于显示标题的活动
<?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=".ScreenActivities">
<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_screen_activities" />
</android.support.design.widget.CoordinatorLayout>
content.xml中
<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.ce.activizor.ScreenActivities"
tools:showIn="@layout/activity_screen_activities"
android:background="@color/background">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/et_activity_new_activity"
android:hint="new activity"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
<Button
style="@style/AppTheme.Button_prim_sec"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add activity"
android:id="@+id/btn_activity_new_activity"
android:layout_below="@+id/et_activity_new_activity"
android:layout_alignParentStart="true" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/lv_activity_all_activities"
android:layout_below="@+id/btn_activity_new_activity"
android:layout_alignParentStart="true" />
</RelativeLayout>
另外,我没有显示文本的活动的一个问题是我必须添加相对布局作为第一层,否则,工具栏将覆盖线性布局的一部分。有更好的方法实现这个目标?
答案 0 :(得分:1)
首先检查清单文件中的活动的android:label
标记。对某些人来说,可能会提到它,有些人可能会遗漏。
要添加标题,请使用
mActionBarToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar); setSupportActionBar(mActionBarToolbar);
getSupportActionBar().setTitle("My title");
getSupportActionBar().setDisplayShowTitleEnabled(false);