iOS 协议使用（二）

14-09-24 来源：[db:作者]

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ShowViewController在PopViewController拿值。注意设置代理（委托）？就像，我没有委拖你替我办事，你去银行，或者去政府替我办事，人家当然不会处理你

（1）PopViewController.h
#import

//定义协议
@protocol popNextDeleage

-(void)passPopReport:(NSString*)string;

@end

@interface PopViewController : UIViewController

@property(nonatomic,retain)NSObject *popDeleage;//声明一个代理

- (IBAction)reportAction:(UIButton *)sender;

@end

（2）PopViewController.m - (IBAction)reportAction:(UIButton *)sender {

[self.popDeleage passPopReport:@"举报"];//赋值

}

（3）ShowViewController.h遵守协议popNextDeleage
@interface ShowViewController : UIViewController{

UIView *moreView;

}

（4）ShowViewController.m //实现协议（拿到值）
-(void)passPopReport:(NSString *)string{

if ([string isEqualToString:@"举报"]) {
ReportViewController *report = [[ReportViewController alloc] init];
[self.navigationController pushViewController:report animated:YES];
}
}

（5）ShowViewController.m设置deleage

-(void)pop:(id)sender{

PopViewController *pop = [[PopViewController alloc] init];
pop.popDeleage = self;//设置deleage（谁实现了delegate方法就指定给谁）
FPPopoverController *basePop = [[FPPopoverController alloc] initWithViewController:pop];
basePop.tint = FPPopoverLightGrayTint;
basePop.arrowDirection = FPPopoverArrowDirectionAny;
[basePop presentPopoverFromView:sender];

}

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