Android Toolbar class not found

Question

I upgraded Android Studio to 1.2 today and I got this error.

The following classes could not be found: android.support.v7.widget.Toolbar (Fix Build Path, Create Class)

My build.gradle contains the following dependencies

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:cardview-v7:22.1.1'
    compile 'com.android.support:recyclerview-v7:22.1.1'
    compile 'com.android.support:appcompat-v7:22.1.1'
}

Would someone please resolve this issue for me?

Hmmm I cannot find the post that helped me out for references, but what fixed it for me was changing — Bart de Ruijter, May 07 '15 at 14:25
I believe it is AS 1.2 [known issue](http://tools.android.com/knownissues)! — eliasah, May 07 '15 at 16:03
Instantiated and not found two very different things. I tried those workarounds also — Adarsh, May 07 '15 at 16:05
@Aadi try deleting C:\Users\[USER_NAME]\.AndroidStudioPreview1.2\system\caches or C:\Users\[USER_NAME]\.AndroidStudio\system\caches depending on the version of Android Studio being used — Kai, May 08 '15 at 04:56

score 2 · Answer 1 · answered May 07 '15 at 14:16

2

This problem can (occasionally) be resolved by invalidating caches

File > Invalidate Caches / Restart > Invalidate and Restart

See below:

Invalidate Caches

answered May 07 '15 at 14:16

Ed Holloway-George

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score 1 · Answer 2 · answered May 12 '15 at 14:24

Android Known Issue: This is bug 170841 which will be fixed in version 1.2.3 of the Android Gradle plugin.

Workaround 1: First manually build the project, then manually sync the project (using the Sync with Gradle files in the toolbar, or from the Tools > Android menu), then finally press Refresh in the toolbar above the layout editor. Workaround 2: Switch the Android Gradle plugin from 1.2.x to 1.1.3 for now. When 1.2.3 is released you can switch back to the 1.2.x versions.

score 0 · Answer 3 · edited May 14 '15 at 12:14

0

Do you have android-support-v7-appcompat.jar inside your project folder (/lib, /libs etc.)? Delete it! Then try remove it and make Run - Clear project.

edited May 14 '15 at 12:14

SMR

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answered May 14 '15 at 11:56

Tapa Save

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Android Toolbar class not found

3 Answers3