【发布时间】：2015-06-27 18:33:36
【问题描述】：
所以我已经成功地将一个按钮变成了一个可以改变标签的开关。
我还能够让它在发生这种情况时启动定时处理设置，并且它能够关闭定时处理。
无论如何，我需要关闭定时过程，我想知道是否有办法在不使用一次性用品的情况下停止它。使用第二个 takeUntil 信号。
编辑我认为我试图做的有点误导，让我展示我当前有效的解决方案。
-(RACSignal*) startTimer {
return [[RACSignal interval:1.0
onScheduler:[RACScheduler mainThreadScheduler]]
startWith:[NSDate date]];
}
-(void) viewWillAppear:(BOOL)animated {}
-(void) viewDidLoad {
self.tableView.delegate = self;
self.tableView.dataSource = self;
RACSignal* pressedStart = [self.start rac_signalForControlEvents:UIControlEventTouchUpInside];
@weakify(self);
RACSignal* textChangeSignal = [pressedStart map:^id(id value) {
@strongify(self);
return [self.start.titleLabel.text isEqualToString:@"Start"] ? @"Stop" : @"Start";
}];
// Changes the title
[textChangeSignal subscribeNext:^(NSString* text) {
@strongify(self);
[self.start setTitle:text forState:UIControlStateNormal];
}];
RACSignal* switchSignal = [[textChangeSignal map:^id(NSString* string) {
return [string isEqualToString:@"Stop"] ? @0 : @1;
}] filter:^BOOL(id value) {
NSLog(@"Switch %@",value);
return [value boolValue];
}];
[[self rac_signalForSelector:@selector(viewWillAppear:)]
subscribeNext:^(id x) {
}];
static NSInteger t = 0;
// Remake's it self once it is on finished.
self.disposable = [[[textChangeSignal filter:^BOOL(NSString* text) {
return [text isEqualToString:@"Stop"] ? [@1 boolValue] : [@0 boolValue];
}]
flattenMap:^RACStream *(id value) {
NSLog(@"Made new Sheduler");
@strongify(self);
return [[self startTimer] takeUntil:switchSignal];
}] subscribeNext:^(id x) {
NSLog(@"%@",x);
@strongify(self);
t = t + 1;
NSLog(@"%zd",t);
[self updateTable];
}];
[[self rac_signalForSelector:@selector(viewWillDisappear:)] subscribeNext:^(id x) {
NSLog(@"viewWillAppear Dispose");
[self.disposable dispose];
}];
}
-(BOOL) isGroupedExcercisesLeft {
BOOL isGroupedLeft = NO;
for (int i =0;i < [self.excercises count]; i++) {
Excercise* ex = [self.excercises objectAtIndex:i];
if(ex.complete == NO && ex.grouped == YES) {
isGroupedLeft = YES;
break;
}
}
return isGroupedLeft;
}
-(void) updateTable {
// Find the
NSInteger nextRow;
if (([self.excercises count] > 0 || self.excercises !=nil) && [self isGroupedExcercisesLeft]) {
for (int i =0;i < [self.excercises count]; i++) {
Excercise* ex = [self.excercises objectAtIndex:i];
if(ex.complete == NO && ex.grouped == YES) {
nextRow = i;
break;
}
}
NSIndexPath* path = [NSIndexPath indexPathForItem:nextRow inSection:0];
NSArray* indexPath = @[path];
// update //
Excercise* ex = [self.excercises objectAtIndex:nextRow];
[self.tableView scrollToRowAtIndexPath:path atScrollPosition:UITableViewScrollPositionTop animated:YES];
if (ex.seconds <= 0) {
RLMRealm* db = [RLMRealm defaultRealm];
[db beginWriteTransaction];
ex.complete = YES;
[db commitWriteTransaction];
}
else {
// Update Seconds
RLMRealm* db = [RLMRealm defaultRealm];
[db beginWriteTransaction];
ex.seconds = ex.seconds - 1000;
NSLog(@"Seconds: %zd",ex.seconds);
[db commitWriteTransaction];
// Update table
[self.tableView reloadRowsAtIndexPaths:indexPath withRowAnimation:UITableViewRowAnimationNone];
}
} else {
NSLog(@"Done");
SIAlertView *alertView = [[SIAlertView alloc] initWithTitle:@"Deskercise" andMessage:@"Excercises Complete"];
[alertView addButtonWithTitle:@"Ok"
type:SIAlertViewButtonTypeDefault
handler:^(SIAlertView *alert) {
}];
alertView.transitionStyle = SIAlertViewTransitionStyleBounce;
[alertView show];
NSLog(@"Dispose");
[self.disposable dispose];
}
}
【问题讨论】：
标签： ios reactive-cocoa