Adding external library in Android studio

1- Choose project view

2- Copy your JAR file in app -> lib folder

3- Right click on your JAR file and choose add as library

 

4- Check it in build.gradle

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Approach 2)

1- File -> New -> New Module

2- Import .JAR/.AAR Package

3- Browse your JAR File

4- Finish

5- File -> Project Structure -> Dependencies

6- You should click on + button and then click on Module Dependency

7- You will see your library here

8- choose your library and click ok

9- Then, you will see that your library is added.

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Approach 3) Android is using https://bintray.com/ as remote library. If you can find your libraries in this website, you can try this approach.

1- File -> Project Structure -> Dependencies

2- Click on + button and choose library dependency

 

3- find your library and select it, then click OK.