You should use only one of these versions in the adle file dependencies or use +, for ex. Eclipse library project based on Android support appcompat-v7 AAR releases. Open folder appcompat-v7 and you see folders with all available version. for example: "ANDROID_SDK_DIRECTORY\extras\android\m2repository\com\android\support\appcompat-v7" The main features here are backwards-compatible versions of FragmentManager and LoaderManager.
In that folder there are support libraries that can’t be found. Support android.app classes to assist with development of applications for android API level 4 or later.
compile :appcompat-v7:18.0.+ into your gradle dependencies and after that, Build -> Rebuild Project. If you use Android Studio, you need to do as following: add this. Then you need to add appcompat as a dependency. Go to the real path of your Support Repository Libraries and check that the following folder exists: "ANDROID_SDK_DIRECTORY\extras\android\m2repository\com\android\support" Delete jar library from every directory you add.
For example, when creating the the v7 appcompat project, add both the. In the new library project, expand the libs/ folder, right-click file and select Build Path > Add to Build Path.
This tutorial directly expands on that base project - you can download the initial source code here.
Please refer to the base tutorial How To Get Started With Android Programming for an explanation of basic Android concepts. You now have a library project for your selected Support Library that you can use with one or more application projects. All of them can be used independently from others, so you can treat every section as a reference guide. For example, the appcompat project requires you to export both the android-support-v4.jar and android-support-v7-appcompat.jar files. The following tutorial contains an overview of the Material Design UI components with example code for including and customising them in your application. Thankfully, Google created the Design Support Library that now contains all commonly used visual components for us to use. From a programmers perspective though, some of the effects were difficult to achieve and were inconsistent across applications because of using custom solutions or third-party libraries. The comprehensive guide from Google thoroughly explains its concepts, but probably concerns designers and UI experts the most. Android as an operating system has undergone many visual overhauls over the years, and the current incarnation of those is Material Design.