I can not find the toolbar in the layout editor in Android Studio

I am trying to make a tutorial for Android developers.

They refer to the toolbar in the layout editor, in the training image it looks like this:

enter image description here

But this is what I see

enter image description here.

Missing toolbar with eye. As you can see, the menu has a "Toolbar" -Icon, but clicking on it does not affect.

I use Android Studio 2.3 and follow the previous tutorial lessons as required. How can I activate this toolbar?

This is the link to create the Android user interface .

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3 answers

. , . , (: - > v2.2):

activity_main.xml . , Linear_Layout Relative_Layout. " ". .
: .

, . .

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activity_main.xml content_main.xml. Android Studio 1.4. activity_main.xml - , content_main.xml :

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

, open activity_main.xml, "". Activity_main TextView, , , .

: " " 1 content_main.xml activity_main.xml. .

activity_main.xml content_main.xml . content_main.xml android studio 1.4?

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v7 appcompat gradle. android.support.v7.widget.Toolbar xml.

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Source: https://habr.com/ru/post/1671904/


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