一次在两个活动的视图控制器中更改NSImageview [英] NSImageview change in two active viewcontrollers at a time

问题描述

我有两个视图控制器1)Profile.h& .m，2)settings.h& .m. 两者都有NSimageview，所以当我在设置上更改imageview时，thenn同时如何在打开的viewcontroller配置文件上更改imageview.

I have two viewcontrollers 1) Profile.h &.m, 2) settings.h &.m. Both have NSimageview, so when i change imageview on settings,thenn at same time how change imageview on opened viewcontroller profile.

推荐答案

使用通知或代理方法.

通知方法:

profile.m

profile.m

-(viewDidLoad) {
   [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(changeImageview) name:@"changeImage" object: nil];
 }


-(changeimageView) {
  //Change Image here
 }

settings.m

settings.m

-(void)changeImageForSettingsView{
     [[NSNotificationCenter defaultCenter] postNotificationName:@"changeImage" object: nil];
 }

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