I am trying to switch over to the new Android Studio (awesome btw) but I can' activate the "Preview" window to view my XML files like they demo'd in I/O.
我正在尝试切换到新的Android Studio（真棒btw），但我可以'激活“预览”窗口来查看我的XML文件，就像他们在I / O中演示一样。
When I navigate to View-->Tool Windows-->Preview 'Preview' is greyed out and I can't select it.
当我导航到视图 - >工具窗口 - >预览'预览'时显示为灰色，我无法选择它。
Does anyone know a fix for this?
有谁知道解决这个问题？
3 个解决方案
#1
2
I had the same problem. Then I chose a different device. I saw the error window with the ability to click "rebuild". I clicked and it worked. Try it.
我有同样的问题。然后我选择了另一种设备。我看到了错误窗口，可以单击“重建”。我点击它，它工作。尝试一下。
截图在这里
#2
2
Had the same problem, this solution worked for me File - Invalidate Caches/Restart
有同样的问题，这个解决方案适用于我File - Invalidate Caches / Restart
#3
0
Studio 2.2.1 / Build #AI-143.2821654, April 28, 2016.
Studio 2.2.1 / Build＃AI-143.2821654，2016年4月28日。
Regarding: Missing the Preview Tab or grayed out Designer from View/Tool.
关于：缺少预览选项卡或从视图/工具中淡出设计器。
From the directory tree, click on the following directory to access activity_main.xml:
从目录树中，单击以下目录以访问activity_main.xml：
app/src/main/res/layout/activity_main.xml
or (depending on your directory structure, actual location may vary)
或（取决于您的目录结构，实际位置可能会有所不同）
app/res/layout/activity_main.xml
Afterward, you should notice the Preview tab to the right.
之后，您应该注意到右侧的“预览”选项卡。
To access Designer. You'll be able to find the Design|Text tab below your code.
要访问Designer。您将能够在代码下方找到“设计”|“文本”选项卡。
P.S. My problem was the Designer was grayed out. After the fix, the Designer from Menu bar/View/Tool Window/Designer is still grayed out. But you should be able to access the designer anyway.
附：我的问题是设计师灰显了。修复后，菜单栏/视图/工具窗口/设计器中的Designer仍显示为灰色。但无论如何你应该能够访问设计师。
#1
2
I had the same problem. Then I chose a different device. I saw the error window with the ability to click "rebuild". I clicked and it worked. Try it.
我有同样的问题。然后我选择了另一种设备。我看到了错误窗口，可以单击“重建”。我点击它，它工作。尝试一下。
截图在这里
#2
2
Had the same problem, this solution worked for me File - Invalidate Caches/Restart
有同样的问题，这个解决方案适用于我File - Invalidate Caches / Restart
#3
0
Studio 2.2.1 / Build #AI-143.2821654, April 28, 2016.
Studio 2.2.1 / Build＃AI-143.2821654，2016年4月28日。
Regarding: Missing the Preview Tab or grayed out Designer from View/Tool.
关于：缺少预览选项卡或从视图/工具中淡出设计器。
From the directory tree, click on the following directory to access activity_main.xml:
从目录树中，单击以下目录以访问activity_main.xml：
app/src/main/res/layout/activity_main.xml
or (depending on your directory structure, actual location may vary)
或（取决于您的目录结构，实际位置可能会有所不同）
app/res/layout/activity_main.xml
Afterward, you should notice the Preview tab to the right.
之后，您应该注意到右侧的“预览”选项卡。
To access Designer. You'll be able to find the Design|Text tab below your code.
要访问Designer。您将能够在代码下方找到“设计”|“文本”选项卡。
P.S. My problem was the Designer was grayed out. After the fix, the Designer from Menu bar/View/Tool Window/Designer is still grayed out. But you should be able to access the designer anyway.
附：我的问题是设计师灰显了。修复后，菜单栏/视图/工具窗口/设计器中的Designer仍显示为灰色。但无论如何你应该能够访问设计师。