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android support library

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The Android Support Library is a collection of code libraries that developers can use to provide backward compatibility for new Android features and to simplify the development of Android applications. The Support Library includes libraries for user interface widgets, support for the latest features and APIs of Android, and support for older versions of Android.

The Support Library includes the following major libraries:

  1. AppCompat: The AppCompat library provides backward compatibility for Material Design elements and other new features introduced in recent versions of Android. It includes support for the Action Bar, RecyclerView, ViewPager, and other UI elements.

  2. Design: The Design library provides support for Material Design components, such as the FloatingActionButton, NavigationView, Snackbar, and TabLayout.

  3. RecyclerView: The RecyclerView library provides a more flexible and efficient way to display large data sets in a list or grid format.

  4. CardView: The CardView library provides a Material Design card-style container for displaying content.

  5. Palette: The Palette library provides support for extracting color palettes from images.

  6. Percent: The Percent library provides support for specifying layout dimensions and positions as percentages of the screen size.

  7. VectorDrawable: The VectorDrawable library provides support for vector graphics, which are resolution-independent and can be scaled to any size without loss of quality.

To use the Android Support Library in your Android project, you need to include it in your app's build.gradle file. You can include the entire library by adding the following line to the dependencies section of your build.gradle file:

implementation 'com.android.support:support-v4:28.0.0'

This will include the entire Support Library version 28.0.0 in your app. You can also include specific libraries by replacing support-v4 with the name of the library you want to use, such as appcompat-v7 or design.

Note that as of Android 28, the Support Library has been replaced by AndroidX, which is an improved version of the Support Library that uses a new package namespace to avoid conflicts with existing code. If you are starting a new project or updating an existing project, it is recommended that you use AndroidX instead of the Support Library.