1.代理 ，具体见Jianshu
2.代替KVO
- (void)viewDidLoad {
[super viewDidLoad];
[_redView rac_observeKeyPath:@"frame" options:NSKeyValueObservingOptionNew observer:nil block:^(id value, NSDictionary *change, BOOL causedByDealloc, BOOL affectedOnlyLastComponent) {
}];
[[_redView rac_valuesForKeyPath:@"frame" observer:nil] subscribeNext:^(id x) {
// x:修改的值
NSLog(@"%@",x);
}];
[_redView rac_observeKeyPath:@"bounds" options:NSKeyValueObservingOptionNew observer:nil block:^(id value, NSDictionary *change, BOOL causedByDealloc, BOOL affectedOnlyLastComponent) {
}];
3.监听事件
- (void)viewDidLoad {
[super viewDidLoad];
[[_btn rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
NSLog(@"按钮点击了");
}];
4.代替通知
[[[NSNotificationCenter defaultCenter] rac_addObserverForName:UIKeyboardWillShowNotification object:nil] subscribeNext:^(id x) {
NSLog(@"%@",x);
}];
5.监听文本框
[_textField.rac_textSignal subscribeNext:^(id x) {
NSLog(@"%@",x);
}];
