Android Window Utilities

Windows.java

import android.annotation.TargetApi;
import android.os.Build;
import android.support.v4.content.ContextCompat;
import android.view.Window;
import android.view.WindowManager;

public class Windows {

  private Windows() {
    //no instances
  }

  /**
   * Credit to the answer marked correct:
   * http://stackoverflow.com/questions/33668668/coordinatorlayout-not-drawing-behind-status-bar-even-with-windowtranslucentstatu
   */
  public static void setTranslucentStatusBar(Window window) {
    if (window == null) return;
    int sdkInt = Build.VERSION.SDK_INT;
    if (sdkInt >= Build.VERSION_CODES.LOLLIPOP) {
      setTranslucentStatusBarLollipop(window);
    } else if (sdkInt >= Build.VERSION_CODES.KITKAT) {
      setTranslucentStatusBarKiKat(window);
    }
  }

  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
  private static void setTranslucentStatusBarLollipop(Window window) {
    window.setStatusBarColor(
        ContextCompat.getColor(window.getContext(), android.R.color.transparent));
  }

  @TargetApi(Build.VERSION_CODES.KITKAT)
  private static void setTranslucentStatusBarKiKat(Window window) {
    window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
  }
}