Is there a better way to write android toolbar repeated methodes rather than writing the same code in every activity

Question

I have 3 activities, they all have a toolbar,they are all working fine,but all of them have a slight difference in their toolbar, so I had to write a lot of similar lines in every activity,is it possible to make a class for the toolbar custom xml layout the same as php ,in php when you make a header that is shared with all pages you program the header in a way that it dynamically changes depending on the page you are in,do note the code is working fine if they are separate my only problem is I want to keep my toolbar methods separate from my activity methods.

Answer 1

you can create you own toolbar that extends from android.support.v7.widget.Toolbar. like that

public class YourToolbar extends android.support.v7.widget.Toolbar{

public YourToolbar (Context context) {
    super(context);
    initViewComponents(context);
}


public YourToolbar (Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
    initViewComponents(context);
}

public YourToolbar (Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    initViewComponents(context);
}
private void initViewComponents(Context context) {
   //here the shared code between all activities
     if(context instanceof FirstActivity){
    //code fore just the first Acitivity
     }if(context instanceof SecondActivity){
      //code fore just the secondAcitivity
     }else if(context instanceof ThreardActivity){
      }
    //here the shared code between all activities
  }
 }

in your xml views replace the default tolbar by yours

in the ativities classes replace the default toolbar by yours