navbar.java

public void chanceColorStatusBar(){ 
     if (android.os.Build.VERSION.SDK_INT >= 21) { 
         Window window = this.getWindow(); 
         window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); 
         window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); 
         window.setStatusBarColor(this.getResources().getColor(R.color.colorPrimaryDark)); 
     } 
}