java - Changing color of a button in an array of buttons and return the other buttons to default - 


@override public void onclick(view v) {     switch(v.getid()) {         case r.id.btna:             runonuithread(new thread(new runnable() {                 @override                 public void run() {                     btna.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.button_pressed));                     btnb.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                     btnc.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                     btnd.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                 }             }));             break;         case r.id.btnb:             runonuithread(new thread(new runnable() {                 @override                 public void run() {                     btnb.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.button_pressed));                     btna.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                     btnc.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                     btnd.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                                 }             }));             break;  }

so implementing code job fine, have 6 buttons have 6 times. i've read array of buttons , tried implement not make work. isn't clear me how know button clicked , changed color while other button not clicked goes default color.

edit:
sorry if wasn't clear, buttons used multiple choices. buttons set default on creation. not using switch statement make 2 buttons same color if click on button after other, same color. it's more of display problem..

i guess fredk meant that:

    @override     public void onclick(view v) {         runonuithread(new thread(new runnable() {             @override             public void run() {                 // reset buttons                 btna.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                 btnb.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                 btnc.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                 btnd.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                 .                 .                 .                 btnz.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));                  // set clicked button                 v.setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.button_pressed));             }         }));     }

update:

you can iterate on viewgroup won't need write down each button manually.

    viewgroup viewgroup = (viewgroup) v.getparent();     for(int i=0;i<viewgroup.getchildcount();i++){         object child = viewgroup.getchildat(i);         if(child instanceof button){             ((button) child).setbackgroundcolor(contextcompat.getcolor(getapplicationcontext(), r.color.colorprimary));         }     }

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