android - Support Library Froyo to Lollipop -


how, , need implement support-libraries in order app working on older android-versions.
need implement app running on lollipop on froyo?

before starting make sure have android support library , android support repository downloaded on sdk manager.

eclipse

  1. create directory named libs/ in root of project directory.
  2. copy jar file sdk installation libs/ folder.
  3. in eclipse right click jar , choose build path > add build path.

android studio

  1. open build.gradle file in application module. (usually named app).
  2. in dependencies part add following line: 
    compile 'com.android.support:appcompat-v7:22.0.0'
  3. finally gradle sync

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