UIView on ReactiveObjC

gistfile1.m

// 監聽 UITextField 當內文有改變的時候，會執行內部 function
[[self.textView rac_signalForControlEvents:UIControlEventEditingChanged] subscribeNext:^(__kindof UIControl * _Nullable x) {
        NSLog(@"text change");
}];

// 監聽 button UIControlEventTouchUpInside 狀態
[[self.btnButton rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(__kindof UIControl * _Nullable x) {
    NSLog(@"button click");
}];

// 3秒後，執行 block 裡面程式碼
[[RACScheduler mainThreadScheduler] afterDelay:3 schedule:^{
    NSLog(@"execute after 3 sec");
}];

// 每 2秒，執行 block 裡面程式碼
[[RACSignal interval:2 onScheduler:[RACScheduler mainThreadScheduler]] subscribeNext:^(id x) {
    NSLog(@"execute per 2 sec");
}];