Objective-C 延遲與取消呼叫Function

1. 呼叫與延遲方法如下

GitHub:

https://github.com/f40706/delay_and_call_method

2. 程式碼

按下onDelayMethodPressed，10秒後會呼叫execute Function

按下onCancelMethodPressed，會"取消"延遲呼叫的execute Function

2022-03-22 22:37:18.903931+0800 delay_and_call_method[3968:102311] delay call
2022-03-22 22:37:28.905523+0800 delay_and_call_method[3968:102311] execute
2022-03-22 22:37:34.219536+0800 delay_and_call_method[3968:102311] delay call
2022-03-22 22:37:35.618120+0800 delay_and_call_method[3968:102311] cancel execute
2022-03-22 22:37:56.714777+0800 delay_and_call_method[3968:102311] delay call
2022-03-22 22:37:58.981749+0800 delay_and_call_method[3968:102311] cancel execute
2022-03-22 22:38:24.482147+0800 delay_and_call_method[3968:102311] delay call
2022-03-22 22:38:34.483330+0800 delay_and_call_method[3968:102311] execute

實際功能，可以下載GitHub範例

- (IBAction)onDelayMethodPressed:(UIButton *)sender {
    [self delayMethod:10];
}

- (IBAction)onCancelMethodPressed:(id)sender {
    [self cancelDelayMethod];
}

- (void) delayMethod:(int)delay   {
    [self performSelector:@selector(execute) withObject:nil afterDelay:delay];
    NSLog(@"delay call");
}

- (void) cancelDelayMethod {
    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(execute) object:nil];
    NSLog(@"cancel execute");
}

- (void) execute {
    NSLog(@"execute");
}

---

Objective-C

Objective-C 應用內多語言切換

1. 多語言切換範例程式碼 GitHub: https://…

作者: John 2022 年 3 月 23 日2022 年 3 月 23 日

---

訂閱Codeilin的旅程，若有最新消息會通知。

廣告