Imitation of the Idios status bar color and title bar color are consistent

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import .;
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public class StatusBarCompat {
 private static final int INVALID_VAL = -1;
 //Judge version @TargetApi(Build.VERSION_CODES.LOLLIPOP)
 public static View compat(Activity activity, int statusColor) {
  //Default color  int color = (activity, );
  //If the version is greater than or equal to 21, set the color to the status bar  if (.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
   if (statusColor != INVALID_VAL) {
    color = statusColor;
   }
   ().setStatusBarColor(color);
   return null;
  }
  //If the version is greater than or equal to 19 and less than 21  if (.SDK_INT >= Build.VERSION_CODES.KITKAT
    && .SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
   //Get contentView   ViewGroup contentView = (ViewGroup) ();
   if (statusColor != INVALID_VAL) {
    color = statusColor;
   }
   //Get the first view in the contentView, that is, the status bar   View statusBarView = (0);
   if (statusBarView != null && () == getStatusBarHeight(activity)) {
    (color);
    return statusBarView;
   }

   statusBarView = new View(activity);
    lp = new (.MATCH_PARENT,
     getStatusBarHeight(activity));
   (color);
   (statusBarView, lp);
   return statusBarView;
  }
  return null;
 }
 public static void compat(Activity activity) {
  compat(activity, INVALID_VAL);
 }
 public static int getStatusBarHeight(Context context) {
  int result = 0;
  int resourceId = ().getIdentifier("status_bar_height", "dimen", "android");
  if (resourceId > 0) {
   result = ().getDimensionPixelSize(resourceId);
  }
  return result;
 }
}

import .;
import ;
import .;
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public class MainActivity extends AppCompatActivity {
 protected boolean statusBarCompat = true;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  (savedInstanceState);
  setContentView(.activity_main);
  if (statusBarCompat) {
   (this, (this, ));
   transparent19and20();
  }
 }
 protected void transparent19and20() {
  if (.SDK_INT >= Build.VERSION_CODES.KITKAT
    && .SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
   getWindow().addFlags(.FLAG_TRANSLUCENT_STATUS);
  }
 }
}