信号基本流程:

　　

//1:创建信号    RACSignal *signal = [RACSignal createSignal:^RACDisposable * _Nullable(id
      
         _Nonnull subscriber) {                //subscriber 对象不是一个对象        //3:发送信号        [subscriber sendNext:@"Cooci"];                //请求网络 失败 error        NSError *error = [NSError errorWithDomain:NSURLErrorDomain code:10086 userInfo:@{
    @"key":@"10086错误"}];                [subscriber sendError:error];        //        [subscriber sendCompleted];                //4.RACDisposable 销毁                return [RACDisposable disposableWithBlock:^{                        NSLog(@"销毁了");        }];    }];            //2:订阅信号    [signal subscribeNext:^(id  _Nullable x) {                NSLog(@"%@",x);    }];        //订阅错误信号        [signal subscribeError:^(NSError * _Nullable error) {                NSLog(@"%@",error);    }];
      

 

一: KVO

[RACObserve(self, name) subscribeNext:^(id  _Nullable x) {                NSLog(@"%@",x);            }];

二: 通知

[[[NSNotificationCenter defaultCenter] rac_addObserverForName:UIKeyboardWillShowNotification object:nil] subscribeNext:^(NSNotification * _Nullable x) {                NSLog(@"%@",x);    }];

 

三: 代理

[[self rac_signalForSelector:@selector(textFieldDidEndEditing:) fromProtocol:@protocol(UITextFieldDelegate)] subscribeNext:^(RACTuple * _Nullable x) {            }];

 

四: target

//Button    [[self.button rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(__kindof UIControl * _Nullable x) {            }];        //UITextField    [[self.textField rac_textSignal] subscribeNext:^(NSString * _Nullable x) {        //x 为textField 中输入的text    }];        //UITapGestureRecognizer    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] init];    self.label.userInteractionEnabled = YES;    [self.label addGestureRecognizer:tap];        [[tap rac_gestureSignal] subscribeNext:^(__kindof UIGestureRecognizer * _Nullable x) {            }];

 

五: timer

[[RACSignal interval:1 onScheduler:[RACScheduler scheduler]] subscribeNext:^(NSDate * _Nullable x) {                NSLog(@"%@",[NSThread currentThread]);            }];

 

六: 结构

//数组    NSArray *array = @[@"Kobe",@"laker",@"34"];        [array.rac_sequence.signal subscribeNext:^(id  _Nullable x) {        //子线程        NSLog(@"%@",[NSThread currentThread]);        NSLog(@"数组%@",x);    }];        /**     2018-11-21 18:53:24.318270+0800 001---RAC初探[12854:18767540] 
      
       {number = 3, name = (null)}     2018-11-21 18:53:24.318529+0800 001---RAC初探[12854:18767540] 数组Kobe     2018-11-21 18:53:24.319043+0800 001---RAC初探[12854:18767540] 
       
        {number = 3, name = (null)}     2018-11-21 18:53:24.319139+0800 001---RAC初探[12854:18767540] 数组laker     2018-11-21 18:53:24.319340+0800 001---RAC初探[12854:18767540] 
        
         {number = 3, name = (null)}     2018-11-21 18:53:24.319398+0800  
         
          {number = 4, name = (null)}     2018-11-21 18:53:24.319444+0800 001---RAC初探[12854:18767540] 数组34     */        NSDictionary *dict = @{
    @"name":@"James",@"age":@"18",@"gender":@"1"};        [dict.rac_sequence.signal subscribeNext:^(id  _Nullable x) {                NSLog(@"%@",[NSThread currentThread]);        //元祖        NSLog(@"字典%@",x);                RACTwoTuple *tuple = (RACTwoTuple *)x;                NSLog(@"key == %@ , value = %@",tuple[0],tuple[1]);            }];        /**     2018-11-21 18:53:24.319584+0800  字典
          
            (     name,     James     )     2018-11-21 18:53:24.319666+0800  key == name , value = James     2018-11-21 18:53:24.319899+0800  
           
            {number = 4, name = (null)} 2018-11-21 18:53:24.320207+0800 字典
            
              ( age, 18 ) 2018-11-21 18:53:24.320494+0800 key == age , value = 18 2018-11-21 18:53:24.342978+0800 
             
              {number = 4, name = (null)} 2018-11-21 18:53:24.343114+0800 字典
              
                ( gender, 1 ) 2018-11-21 18:53:24.343201+0800 key == gender , value = 1 */