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大家好我有一個奇怪的問題,我在綁定方法推杆驗證碼:當觀察項目的值改變時,RACObserve subscribeNext沒有執行?
[RACObserve(self.viewModel,contacts) subscribeNext:^(id x) {
[self.contactsTableView reloadData];
}];
但是當我的視圖模型的接觸改變,subscribeNext沒有執行! ,我檢查了是否通過調試改變了值,並且它正常改變了!
這是其價值在我看來模型(簡體)改爲:
我這裏initilized它:
- (instancetype)init {
self.contacts = [[NSMutableArray <Contact *> alloc]init];
}
,並改變了這裏
#pragma mark - load and filter methods
- (RACCommand *)loadContactsCommand {
ContactsNetworkManager *contactNetworkManager = [ContactsNetworkManager sharedManager];
return [[RACCommand alloc] initWithSignalBlock:^RACSignal *(id input) {
return [[contactNetworkManager getAllContactsSignal] map:^id(NSMutableArray<Contact *> * value) {
NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"firstName" ascending:YES];
[value sortUsingDescriptors:[NSArray arrayWithObject:descriptor]];
[_contacts removeAllObjects];
[_contacts arrayByAddingObjectsFromArray:value];
return value;
}];
}];
}
#pragma mark - Actions
- (void)loadContacts {
[self.loadContactsCommand execute:nil];
}
@end