I currently have a fragment tab host, made by this tutorial http://maxalley.wordpress.com/2013/05/18/android-creating-a-tab-layout-with-fragmenttabhost-and-fragments/
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Inorder to include viewpager library to the project ,you should import the library
"Existing Project” to your current one.
Step 1:-Download source code from GitHub.(https://github.com/JakeWharton/Android-ViewPagerIndicator)
Step2 :-In your Android Studio Project: File -> Project Structure -> add (+ symbol) -> Import Existing Project. Import just the folder called ”library”, not the entire project (leave the import options as Android Studio suggests).
step 3:-If the "compileSdkVersion" specified in your build.gradle doesn’t match with the one specified in the Android-ViewPagerIndicator project, change the second one. The same apply with any other property, such as "minSdkVersion" or even the current support library.
Step 4:-Add Android-ViewPagerIndicator project as a dependency to your build.gradle module: dependencies { compile project(':library') }
Step 5:- Sync project with gradle files.