Crashed when applied Toolbar

Question

I\'m new in Android programming. I\'m having this issue when I applied the toolbar into my app and it crashed when I try to run the app. Here is the code:

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Answer 1

If you use Toolbar from v7-support, you should use Theme.AppCombat in your Activity.

Define your style in styles.xml

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And apply it to whole application (or specyfic Activity) in AndroidManifest.xml