1.此處使用https://github.com/ReactiveCocoa/ReactiveObjC.git
platform :ios,'8.0'
target? 'RacDemo'? do?
pod? 'ReactiveObjC'
end
2.使用
1)引入頭文件
#import <ReactiveObjC.h>
2)文本輸入框監(jiān)聽
UITextField *field = [[UITextField alloc] initWithFrame:CGRectMake(0, 64, self.view.bounds.size.width, 36)];
? ? field.text = @"placeholder";
? ? field.backgroundColor = [UIColor cyanColor];
? ? [self.viewaddSubview:field];
? ? [field.rac_textSignal subscribeNext:^(NSString * _Nullable x) {
? ? ? ? NSLog(@"%@",x);// 第一次返回為已經(jīng)賦值的文本
? ? }];
3)多條件判斷
RACSignal*signalFirst = [field.rac_textSignalmap:^id_Nullable(NSString*_Nullablevalue) {
? ? ? ? if(value.length>5&& value.length<10) {
? ? ? ? ? ? return@(YES);
? ? ? ? }
? ? ? ? return@(NO);
? ? }];
? ? RACSignal*signalSecond = [fieldSecond.rac_textSignalmap:^id_Nullable(NSString*_Nullablevalue) {
? ? ? ? if(value.length>5&& value.length<10) {
? ? ? ? ? ? return@(YES);
? ? ? ? }
? ? ? ? return@(NO);
? ? }];
? ? RAC(btn,enabled) = [RACSignalcombineLatest:@[signalFirst, signalSecond]reduce:^(NSNumber*valueFirst,NSNumber*valueSecond){
? ? ? ? return@(valueFirst.boolValue&& valueSecond.boolValue);
? ? }];
4)綁定label和textFiled
_label= [[UILabelalloc]initWithFrame:CGRectMake(0,151+16+(36+16)*2,self.view.bounds.size.width,36)];
? ? [self.view addSubview:_label];
? ? RAC(_label,text) = self.textField.rac_textSignal;
5)kvo
? ? self.textString = @"123";
? ? self.textString = @"456";
? ? self.textString = @"ddd";// 這里開始返回
? ? [RACObserve(self,textString)subscribeNext: ^(NSString*newString){
? ? ? ? NSLog(@"newString = %@", newString);
? ? }];
? ? self.textString = @"ads";
? ? self.textString = @"adsmmmm";
6)nofication
?? //NSNotification 添加信號
? ? [[[NSNotificationCenter defaultCenter] rac_addObserverForName:@"MYNOTIFICATION" object:nil] subscribeNext:^(NSNotification *noti) {
? ? ? ? NSLog(@"*****? Notification Received? %@ *****",noti.userInfo[@"data"]);
? ? }];
? ? NSNotification *noti1 = [[NSNotification alloc]initWithName:@"MYNOTIFICATION" object:nil userInfo:@{@"data":[NSString stringWithFormat:@"%d",arc4random()%100]}];
? ? [[NSNotificationCenter defaultCenter] postNotification:noti1];
? ? NSNotification *noti2 = [[NSNotification alloc]initWithName:@"MYNOTIFICATION" object:nil userInfo:@{@"data":[NSString stringWithFormat:@"%d",arc4random()%100]}];
? ? [[NSNotificationCenter defaultCenter] postNotification:noti2];
7)target_action
? ? UIButton *bu = [UIButton buttonWithType:UIButtonTypeCustom];
? ? bu.frame=CGRectMake(0,151+16+36+16,self.view.bounds.size.width,36);
? ? bu.backgroundColor = [UIColor orangeColor];
? ? [self.viewaddSubview:bu];
? ? [[burac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
? ? ? ? NSLog(@"*****? 響應RAC button的點擊? *****");
? ? }];
? ? //手勢
? ? self.view.userInteractionEnabled = YES;
? ? UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] init];
? ? [[taprac_gestureSignal] subscribeNext:^(UITapGestureRecognizer * tap) {
? ? ? ? NSLog(@"*****? 響應單擊手勢? *****");
? ? }];
? ? [self.view addGestureRecognizer:tap];
8)延遲
? ? [[RACScheduler mainThreadScheduler] afterDelay:2 schedule:^{
? ? ? ? NSLog(@"*****? first 延時rac寫法? *****");
? ? }];// 單次
? ? [[RACSignal interval:1 onScheduler:[RACScheduler mainThreadScheduler]] subscribeNext:^(NSDate * date) {
? ? ? ? NSLog(@"***** second 延時rac寫法? *****");
? ? }];// 重復
9)組
- (void)group {
? ? // 處理多個請求，都返回結果的時候，統(tǒng)一做處理.
? ? RACSignal *request1 = [RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
? ? ? ? // 發(fā)送請求1
? ? ? ? [subscribersendNext:@"發(fā)送請求1"];
? ? ? ? returnnil;
? ? }];
? ? RACSignal *request2 = [RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
? ? ? ? // 發(fā)送請求2
//? ? ? ? [subscriber sendNext:@"發(fā)送請求2"];
? ? ? ? returnnil;
? ? }];
? ? // 使用注意：幾個信號，參數(shù)一的方法就幾個參數(shù)，每個參數(shù)對應信號發(fā)出的數(shù)據(jù)。
? ? [selfrac_liftSelector:@selector(totalFuctonR1:R2:)withSignalsFromArray:@[request1,request2]];
}
-(void)totalFuctonR1:(id)data1 R2:(id)data2{
? ? NSLog(@"總方法觸發(fā):data1 = %@? ? -----? data2 = %@",data1,data2);
}
10)元組
? ? // 把參數(shù)中的數(shù)據(jù)包裝成元組
? ? RACTuple *tuple = RACTuplePack(@"xmg",@20,@"m",@(999),@[@"a"],@{@"key":@"value"});
? ? RACTupleUnpack(NSString *name,NSNumber *age,NSString *sex,NSNumber *price,NSArray *arr,NSDictionary *dic) = tuple;
? ? NSLog(@"name:%@? age:%@? sex:%@? price:%@ arr:%@? dic:%@",name,age,sex,price,arr,dic);
