Question

我一直在寻找这个答案，但我无法找到解决方案。任何人都可以告诉我，由于用户与应用程序进行任何交互，我们如何计算后台的时间。在少数网站中如果您暂时不与网页交互，您将被注销。我正在寻找这个功能。

我非常感谢你的时间。谢谢

Answer 1

我认为您可以通过UIApplication自定义子类捕获事件。您可以在那里重新启动空闲计时器而不会破坏所有代码。这是如何做到的：

制作您自己的UIApplication子类：

@interface MyUIApplication : UIApplication {
  NSTimer *idleTimer;
}
@property(nonatomic,retain) NSTimer *idleTimer;

在你的主要（）

int retVal = UIApplicationMain(argc, argv, @"MyUIApplication", nil);

在您的应用程序subclass.m中，重写sendEvent：和sendAction：。请参阅Apple文档here：

- (void)sendEvent:(UIEvent *)event {
  [super sendEvent:event];
  [self. idleTimer invalidate];
  self. idleTimer = [NSTimer scheduledTimerWithTimeInterval:kIDLE_TIME target:self selector:@selector(logout:) userInfo:nil repeats:NO];}

......发送动作相同。您也可以将退出逻辑放在此类中：

- (void)logout:(NSTimer *)timer {
  // do logout
}

当应用程序辞职时，您仍应在应用委托中注销（并使计时器无效）：

- (void)applicationWillResignActive:(UIApplication *)application {
  [application logout:nil];
}

Answer 2

您保存上次交互的UNIX时间戳，然后将其与当前交互进行比较。如果它们之间的差异大于您的时间限制，则将用户注销。

Answer 3

我会记录- (void)applicationWillEnterForeground:(UIApplication *)application的时间，当- (void)applicationWillEnterBackground:(UIApplication *)application计算不同的时间时，检查它是否超过某个值，从上一个会话中注销用户。

Answer 4

// Extend method of UIApplication 
- (void)sendEvent:(UIEvent *)event {
    [super sendEvent:event];

    // Only want to reset the timer on a Began touch or an Ended touch, to reduce the number of timer resets.
    NSSet *allTouches = [event allTouches];
    if ([allTouches count] > 0) {
        // allTouches count only ever seems to be 1, so anyObject works here.
        UITouchPhase phase = ((UITouch *)[allTouches anyObject]).phase;
        if (phase == UITouchPhaseBegan || phase == UITouchPhaseEnded) {
            [self resetIdleTimer:NO];
        }
    }
}

- (void) resetIdleTimer:(BOOL)force {
    // Don't bother resetting timer unless it's been at least 5 seconds since the last reset.
    // But we need to force a reset if the maxIdleTime value has been changed.
    NSTimeInterval now = [NSDate timeIntervalSinceReferenceDate];
    if (force || (now - lastTimerReset) > 5.0) {
        // DebugLog(@"Reset idle timeout with value %f.", maxIdleTime);
        lastTimerReset = now;
        // Assume any time value less than one second is zero which means disable the timer.
        // Handle values > one second.
        if (maxIdleTime > 1.0) {
            // If no timer yet, create one
            if (idleTimer == nil) {
                // Create a new timer and retain it.
                idleTimer = [[NSTimer scheduledTimerWithTimeInterval:maxIdleTime target:self selector:@selector(idleTimeExceeded) userInfo:nil repeats:NO] retain];
            }
            // Otherwise reset the existing timer's "fire date".
            else {
                [idleTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:maxIdleTime]];
            }
        }
        // If maxIdleTime is zero (or < 1 second), disable any active timer.
        else {
            if (idleTimer) {
                [idleTimer invalidate];
                [idleTimer release];
                idleTimer = nil;
            }
        }
    }
}

- (void) idleTimeExceeded {
    NSLog(@"Idle time limit of %f seconds exceeded -- ending application", maxIdleTime);
    // Force application to end
    // self.dealloc; -- There's a dealloc in StartProcessViewController.m, but I'm not sure we ought to dealloc the UIApplication object.
    _Exit(0);
}

Answer 5

存档的一种方法是设置一个带有登录哈希的cookie，每次用户请求页面时，该哈希的过期时间为X分钟。如果cookie不存在，则用户将被注销。这也可以是会话cookie。当然，这只有在你谈论webapp时才有效：）

根据用户活动退出

5 个答案: