在没有第二个线程的情况下调用 Objective-C 中延迟的函数

发布于 2024-10-30 07:16:24 字数 825 浏览 2 评论 0原文

我想调用一个函数，即发送一个句子，延迟，以模拟数据流。数据存储在文本文件中。文本文件的每一行包含一个句子。我尝试通过使用 sleep(x) 早些时候获得延迟的调用行为，但这冻结了整个应用程序。我是否必须使用单独的线程，或者是否可以让它与 NSTimer 或其他东西一起工作。像 [self PerformSelector:@selector(parseSentence:) withObject:s afterDelay:2] 吗？

- (void) simulateStream
{
    NSArray *sentences;

NSString *path = [[NSBundle mainBundle] pathForResource:@"Sentence_File" ofType:@"txt"];
NSString *st;

if (path) 
{
st=[NSString stringWithContentsOfFile:pfad 
    encoding:NSUTF8StringEncoding 
    error:nil];

sentences=[[st substringFromIndex:[st rangeOfString:@"$"].location+1]
componentsSeparatedByString:@"$"];  
}

for(int i=0; i<[sentences count]; i++) 
{
    //----CALL THIS WITH A DELAY OF 2 SECONDS----
[sentenceHandler parseSentence:[sentences objectAtIndex:i]]; 

}}

感谢您的帮助。问候

原文

I want to call a function, that is sending a sentence, delayed, in order to simulate a stream of data. The data is stored in a textfile. Each line of the textfile contains one sentence. I tried to get a delayed calling behaviour earlier by using sleep(x) but this freezed the whole application. Do I have to use a seperate thread or is it possible to get it working with NSTimer or sth. like [self performSelector:@selector(parseSentence:) withObject:s afterDelay:2] ?

- (void) simulateStream
{
    NSArray *sentences;

NSString *path = [[NSBundle mainBundle] pathForResource:@"Sentence_File" ofType:@"txt"]; NSString *st; if (path) { st=[NSString stringWithContentsOfFile:pfad encoding:NSUTF8StringEncoding error:nil]; sentences=[[st substringFromIndex:[st rangeOfString:@"$"].location+1] componentsSeparatedByString:@"$"]; } for(int i=0; i<[sentences count]; i++) { //----CALL THIS WITH A DELAY OF 2 SECONDS---- [sentenceHandler parseSentence:[sentences objectAtIndex:i]]; }}

Thanks for help. Greetings

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

弃爱 2024-11-06 07:16:24

您可以增加每次传递的延迟间隔：

NSTimeInterval delay = 2;
for (NSString* sentence in sentences) {
   [sentenceHandler performSelector:@selector(parseSentence:)
                         withObject:sentence
                         afterDelay:delay];
   delay += 2;
}

You could increase the delay interval in each pass:

NSTimeInterval delay = 2;
for (NSString* sentence in sentences) {
   [sentenceHandler performSelector:@selector(parseSentence:)
                         withObject:sentence
                         afterDelay:delay];
   delay += 2;
}

回复收藏 0 原文

~没有更多了~