objective-c - Expected Identifier with NSTimer

Question

I have a block of code that calls an NSTimer from a singleton class. this is Viewcontroller.m

-(IBAction) start
{
[[[ApplicationManager instance].ticker [[NSTimer scheduledTimerWithTimeInterval:1.0     target:self selector:@selector(showActivity) userInfo:nil repeats:YES]];

I have an error that says: Expected identifier Can anyone see why? or where i can add something to fix it? Thanks

Answer 1

你会想要一本关于 Objective-C 的书，因为这一切都搞砸了。代码应该看起来像这样。（至少如果你想做我认为的那样）

- (IBAction) start
{
    [ApplicationManager instance].ticker = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(showActivity) userInfo:nil repeats:YES];
}

您在行首、计时器实例的开头和行尾有多余的括号，您缺少语句的右大括号，并且在ticker 和 [NSTimer..

Answer 2

看起来你那里有一个错字。是的应该是