Android 带有 AppCompat-v7 的工具栏和上下文操作栏
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Toolbar and Contextual ActionBar with AppCompat-v7
提问by ariets
I am working on using the newly added Toolbar that was introduced in Lollipop and the AppCompat-v7 library. I followed this guideon setting up the Toolbar I noticed that when you invoke something that will bring up the contextual ActionBar (such as highlighting text for copy/pasting), that it will push the Toolbar down on the page. You can see what I am talking about in the image at the bottom of the page:
我正在使用 Lollipop 和 AppCompat-v7 库中引入的新添加的工具栏。我按照本指南设置工具栏我注意到，当您调用一些会显示上下文操作栏的内容（例如突出显示文本以进行复制/粘贴）时，它会将工具栏向下推到页面上。你可以在页面底部的图片中看到我在说什么：
So, essentially, I set it up like this. I have the Toolbar defined in an xml file that I use with include tags:
所以，基本上，我是这样设置的。我在与包含标签一起使用的 xml 文件中定义了工具栏：
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"/>
Then, I instantiate it in my view:
然后，我在我的视图中实例化它：
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/root"
tools:context=".MainActivity">
<include
layout="@layout/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<!-- Rest of view -->
</LinearLayout>
In code, I set it up like so:
在代码中，我是这样设置的：
// On Create method of activity:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Does anyone know how to make it so that the Contextual ActionBar comes overtop of the Toolbar?
有谁知道如何使上下文操作栏位于工具栏的上方？
回答by Jacob Ras
Update:
更新：
Solution: use the windowActionModeOverlayproperty. Set this in your theme:
解决方案：使用windowActionModeOverlay属性。在您的主题中设置：
<item name="windowActionModeOverlay">true</item>
and the actionmode will be shown over the action bar instead of pushing it down. (If you're not using the latest AppCompat then you need to add the "android:" prefix to the property). It basically lets AppCompat know that you have a toolbar located in the top of the screen and that it should draw the ActionMode on top of it.
并且动作模式将显示在动作栏上，而不是将其按下。（如果您没有使用最新的 AppCompat，则需要在属性中添加“android:”前缀）。它基本上让 AppCompat 知道你有一个位于屏幕顶部的工具栏，它应该在它上面绘制 ActionMode。
Old answer/workaround:
旧答案/解决方法：
I ran into the same problem. No matter what theme I set, it always pushes down the Toolbar I set as ActionBar. I tried with and without the support library, but it didn't matter.
我遇到了同样的问题。无论我设置什么主题，它总是将我设置为 ActionBar 的 Toolbar 下推。我尝试过使用和不使用支持库，但这并不重要。
Unfortunately I was not able to fix it so I have built a workaround instead. In my ActionModeCallback's onCreateActionModeI hide the action bar:
不幸的是我无法修复它，所以我建立了一个解决方法。在 my 中ActionModeCallback，onCreateActionMode我隐藏了操作栏：
actionBarToolbar.setVisibility(View.GONE);
and in onDestroyActionModeI show it again:
在onDestroyActionMode我再次展示它：
actionBarToolbar.setVisibility(View.VISIBLE);
The hiding/showing happens so quickly it is not noticeable on my test devices. There is of course a downside: although the enter-animation still works, the exit-animation of the contextual action bar gets lost because the Toolbar immediately pops over it. But until we come across a better solution I guess we are stuck with this.
隐藏/显示发生得如此之快，在我的测试设备上并不明显。当然有一个缺点：虽然进入动画仍然有效，但是上下文操作栏的退出动画会丢失，因为工具栏会立即弹出它。但是，在我们遇到更好的解决方案之前，我想我们会坚持这一点。
(My Activity is actually extending a custom BaseActivityclass which has a method called getActionBarToolbar(), taken from the Google I/O 2014 app source code, so I can easily get fetch the Toolbar:
（我的 Activity 实际上是扩展一个自定义BaseActivity类，它有一个名为 的方法getActionBarToolbar()，取自Google I/O 2014 应用程序源代码，因此我可以轻松获取工具栏：
BaseActivity activity = (BaseActivity) getActivity();
activity.getActionBarToolbar().setVisibility(View.GONE);
Too bad the I/O app does not use the contextual action bar.)
太糟糕了 I/O 应用程序不使用上下文操作栏。）
回答by Frank
Do not start it on your activity, but on your toolbar. In you activity:
不要在您的活动中启动它，而是在您的工具栏上启动它。在你的活动中：
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.startActionMode(mActionModeCallback)
and you have to use
你必须使用
<item name="windowActionModeOverlay">true</item>
回答by Daniel Veihelmann
Just a small addition: For
只是一个小小的补充：对于
<item name="windowActionModeOverlay">true</item>
super.onCreate(savedInstanceState)super.onCreate(savedInstanceState)BEFORE在调用setContentView(R.layout.your_activity)setContentView(R.layout.your_activity)您的活动之前。在这种情况下，这真的很重要！回答by Jenkyn
In my case,
<item name="windowActionModeOverlay">true</item>did not work,
but this work:<item name="android:windowActionModeOverlay">true</item>,the androidis the key.
在我的情况下，
<item name="windowActionModeOverlay">true</item>没有工作，但这项工作：<item name="android:windowActionModeOverlay">true</item>这android是关键。
回答by Pete
Jacob's solution worked for me but the contextual ActionBar was transparent and the Toolbar visible through it. This can be resolved as follows:
Jacob 的解决方案对我有用，但上下文 ActionBar 是透明的，并且工具栏通过它可见。这可以解决如下：
<style name="AppTheme.Base" parent="Theme.AppCompat.Light">
....
....
<item name="actionModeStyle">@style/CustomActionMode</item>
</style>
<style name="CustomActionMode" parent="@style/Widget.AppCompat.ActionMode">
<item name="background">@color/primary_material_light</item>
</style>
The theme "AppTheme.Base" must be the one applied to the Toolbar.
主题“AppTheme.Base”必须是应用于工具栏的主题。
More details regarding contextual ActionBar styling:
有关上下文 ActionBar 样式的更多详细信息：
how to Customize the Contextual Action Bar using appCompat in material design
回答by Andreas Wenger
Another small addition: make sure to set at least an empty screen in the activity via setContentView(R.layout.empty_screen)if you load the whole ui in fragments (ft.replace(android.R.id.content, fragment)).
另一个小补充：setContentView(R.layout.empty_screen)如果您在片段 ( ft.replace(android.R.id.content, fragment)) 中加载整个 ui，请确保在 Activity 中至少设置一个空屏幕。
回答by kunal.c
Very useful method to bring toolbar to front toolbar.bringToFront()
将工具栏置于最前面的非常有用的方法 toolbar.bringToFront()
