带定时器的UIAlertView

Question

我正试图UIAlertView用一个timer.例如:用户设置时间,用户点击按钮,UIAlertView弹出,在alertView中有一个计时器,显示用户在操作开始前必须等待多长时间.

在搜索网络时,我只找到了如何显示已经过了多少时间.有没有办法每秒更新UIAlertView以显示计时器？时间过后,UIAlertView需要被解雇,并且必须调用空白.

Answer 1

尝试喜欢它.

UIAlertView *autosaveAlert = [[UIAlertView alloc]initWithTitle:@"Close" message:@"Autosave in (%d) seconds" delegate:self cancelButtonTitle:@"Press to cancel" otherButtonTitles:nil];
[autosaveAlert show];

for(int i = 10; i>=0; i--){
    NSString *tmp = @"Close in (%d) seconds";
    NSString *str = [NSString stringWithFormat:tmp, i];
    [autosaveAlert setMessage:str];
    CFRunLoopRunInMode(kCFRunLoopDefaultMode,1, false);
}

[autosaveAlert dismissWithClickedButtonIndex:0 animated:TRUE];