“无法找到类'android.support.v4.app.FragmentActivity'”错误

Question

I'm getting the following error:

> 02-06 23:10:24.104: E/dalvikvm(912): Could not find class
> 'android.support.v4.app.FragmentActivity', referenced from method
> com.robotium.solo.Waiter.getSupportFragment

When running a project I'm using for Programming Mobile Applications for Android Handheld Systems on Coursera.I believe this error is somehow related to my output answer being considered incorrect. if I can fix this error,I can fix my output.

I didn't have the latest version of Android Support Repository (not installed) when I initially ran my tests,but I now have the latest version of Android Support Repository according to the SDK Manager (v4),and have even restarted Eclipse and the emulator,but I'm still getting the error.

How can I fix the LogCat claiming ASR doesn't exist when it's installed according to the SDK?

Answer 1

If there is no "libs" folder then create one

then click

Project> Android Tools >Add support Library.

This will help you. Finally clean the project and restart Eclipse

Answer 2

You need to add the support library com.android.support:support-v4

On Android Studio, go in the menu File > Project Structure (Ctrl + Alt + Shift + S) Select app , tab Dependecies , and in the + and search for the Maven libraries that you will use. In your case, the com.android.support:support-v4

Answer 3

Either create a "libs" folder and put the "android-support-v4.jar" file

else

import the " android-support-v4.jar" to Android Private Libraries folder, and restart the IDE to take effect.

Answer 4

Please Perform these two steps: 1)It's better to create libs folder and add "android-support-v4.jar" and dont forget to check checkbox mentioning "system library " . 2) Copy "android-support-v4.jar" from "adt-bundle-linux-x86-20140702/sdk/extras/android/support/v4" folder to your "/home/vinny/workspace/appcompat_v7/libs" appcompat libs folder.You can add "android-support-v7-appcompat.jar" this jar also to this folder from "adt-bundle-linux-x86-20140702/sdk/extras/android/support/v7"

Note: Don't forget to perform this step, properties->Android->Library-> add