java - Android- Logic behind setOnClickListener -


i new java/android programming , unfortunately don't under stand logic behind piece of code: 

         button.setonclicklistener(new view.onclicklistener() {          public void onclick(view v) {              // perform action on click          }      });

i have alredy read whole lot of tutorials unfortunately in no 1 far code gets explained in detail. maybe because it's basic every decent object oriented programmer understand reason structure right away.

i wondering why need use new view.onclicklistener()as parameter? setonclicklistener method. in other words why doesn't like

         button.setonclicklistener(          public void onclick(view v) {              // perform action on click      });

this work?

besides not quite sure why onclick method requires paramterer of view v.

i quite thankful since rather puzzled.

view.onclicklistener interface need implement when want handle click events. in code, doing doing new view.onclicklistener(). here creating anonymous class implements view.onclicklistener. , class implements view.onclicklistener must implement methods declared in (e.g. onclick method). also, in public void onclick(view v) {..}, view v denotes view or button clicked can perform whatever want it. example, it's id, change it's color etc.


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