使用StoryBoard：用Segue傳遞數據

A---》B

想把數據  NSString A_data   從AController傳到BController，則在BController中  @property 一個NSString data ，然后在AController中添加方法

 

- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    UIViewController *destination = segue.destinationViewController;
    if ([destination respondsToSelector:@selector(setData:)]) {
        [destination setValue:A_data forKey:@"data"];
    }
    
}