iphone - How can i terminate my application in iPhone depends on time

Question

Iam displaying time in my application using NSTimer Class starting with 00:00.00 (mm:ss.SS) when my application launched. I want to terminate my application when time reaches to 75:00.00 (mm:ss.SS) in iPhone.

Answer 1

启动计时器后，下一行立即调用以下方法：

[self performSelector:@selector(stopTimer) withObject:nil afterDelay:75.0];

stopTimer 方法应该是这样的：

-(void) stopTimer
{
    [timer invalidate];
    timer = nil;
}

Answer 2

下面的代码片段将为您完成工作。但不建议使用 exit() 方法退出应用程序，因为它看起来应用程序已经崩溃给最终用户。我建议您在 75 分钟后显示警报并要求用户退出应用程序。

[NSTimer scheduledTimerWithTimeInterval:270000
                                     target:self
                                   selector:@selector(quitTheApp)
                                   userInfo:nil
                                    repeats:NO];

- (void)quitTheApp
{
    exit(0);
}