// KVO 监听属性
[[self rac_valuesAndChangesForKeyPath:@"age" options:NSKeyValueObservingOptionNew observer:self] subscribeNext:^(RACTwoTuple<id,NSDictionary *> * _Nullable x) {
NSLog(@"%@ - %@", x.first, x.second);
}];
// 监听button点击事件
[[self.button rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(__kindof UIControl * _Nullable x) {
self.age++;
}];
// 监听textField的变化
[[self.textField rac_textSignal] subscribeNext:^(NSString * _Nullable x) {
NSLog(@"%@", x);
}];
// textField 文字发生变化时, label也变
RAC(self.label, text) = self.textField.rac_textSignal;
// RAC 手势
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] init];
[[tap rac_gestureSignal] subscribeNext:^(__kindof UIGestureRecognizer * _Nullable x) {
NSLog(@"");
}];
[self.view addGestureRecognizer:tap];
// RAC 过滤器
[[self.textField.rac_textSignal filter:^BOOL(NSString * _Nullable value) {
return value.length > 3; // 满足这个条件就发送信号, 执行订阅的内容
}] subscribeNext:^(NSString * _Nullable x) {
NSLog(@"%@", x);
}] ;
// RAC bind 绑定/包装
[[self.textField.rac_textSignal bind:^RACSignalBindBlock _Nonnull{
return ^RACSignal *(id value, BOOL *stop) {
// 做好处理，通过信号返回出去.
// 需要引入头文件 #import <ReactiveObjC/RACReturnSignal.h>
return [RACSignal return:[NSString stringWithFormat:@"hello : %@", value]];
};
}] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x); // hello : x
}];
// RAC flattenMap 映射
[[self.textField.rac_textSignal flattenMap:^__kindof RACSignal * _Nullable(NSString * _Nullable value) {
return [RACSignal return:[NSString stringWithFormat:@"hello : %@", value]];
}] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x); // hello : x
}];
// RAC Map 映射
[[self.textField.rac_textSignal map:^id _Nullable(NSString * _Nullable value) {
return [NSString stringWithFormat:@"%@", value];
}] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x); // hello : x
}];
// RAC concat 合并: 按一定顺序拼接信号，当多个信号发出的时候，有顺序的接收信号
// 有多少个信号, 订阅就执行多少次
RACSignal *signalA = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"信号A"];
[subscriber sendCompleted];
return nil;
}];
RACSignal *signalB = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"信号B"];
[subscriber sendCompleted];
return nil;
}];
// signal 必须要有信号发送
[[signalA concat:signalB] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x);
}];
// RAC then : 当第一个信号完成，才会连接then返回的信号, 只会接收到后面的信号数据
[[[RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"1"];
[subscriber sendCompleted];
return nil;
}] then:^RACSignal * _Nonnull{
return [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"2"];
[subscriber sendCompleted];
return nil;
}];
}] subscribeNext:^(id _Nullable x) { // 只接受到后面的信号数据
NSLog(@"%@", x); // 2
}];
// RAC merge 合并 相当于 ||, 任何信号有新值都会调用, 与concat的不同, concat 的signalA 必须要发送信号
RACSignal *signalA = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"1"];
[subscriber sendCompleted];
return nil;
}];
RACSignal *signalB = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"2"];
[subscriber sendCompleted];
return nil;
}];
[[signalA merge:signalB] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x);
}];
// zipWith 压缩, 必须同时发出信号内容
RACSignal *signalA = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"1"];
[subscriber sendCompleted];
return nil;
}];
RACSignal *signalB = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"2"];
[subscriber sendCompleted];
return nil;
}];
[[signalA zipWith:signalB] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x);
}];
// RAC combineLatest 结合, 与zipWith相同, 必须2个信号同时发送
RACSignal *signalA = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"1"];
[subscriber sendCompleted];
return nil;
}];
RACSignal *signalB = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"2"];
[subscriber sendCompleted];
return nil;
}];
[[signalA combineLatestWith:signalB] subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x);
}];
// RAC reduce 聚合 2个信号必须都发送, 先把信号聚集再发送 订阅
RACSignal *signalA = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"1"];
[subscriber sendCompleted];
return nil;
}];
RACSignal *signalB = [RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"2"];
[subscriber sendCompleted];
return nil;
}];
RACSignal *reduceSignal = [RACSignal combineLatest:@[signalA, signalB] reduce:^id (NSString *num1, NSString *num2){
return [NSString stringWithFormat:@"%@, %@", num1, num2];
}];
[reduceSignal subscribeNext:^(id _Nullable x) {
NSLog(@"%@", x);
}];
// RAC ignore 忽略
// 当self.textField.text = 6 时不发送信号
[[self.textField.rac_textSignal ignore:@"6"] subscribeNext:^(NSString * _Nullable x) {
NSLog(@"%@", x);
}];
// RAC 定时器
[[RACSignal interval:1 onScheduler:[RACScheduler currentScheduler]] subscribeNext:^(NSDate * _Nullable x) {
NSLog(@"%@", x);
}];
// RAC delay 延迟
[[[RACSignal createSignal:^RACDisposable * _Nullable(id<RACSubscriber> _Nonnull subscriber) {
[subscriber sendNext:@"1"];
[subscriber sendCompleted];
return nil;
}] delay:5] subscribeNext:^(id _Nullable x) { // 5秒后执行
NSLog(@"%@", x);
}] ;
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