手势密码后显示控制

gistfile1.m

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    NSDate* end = [NSDate date];
    NSTimeInterval distanceBetweenDates = [self.current timeIntervalSinceDate:end];
    //if time is more than LOCK_DISPLAY_TIME(30s)
    if (fabs(distanceBetweenDates) > LOCK_DISPLAY_TIME)
    {
        UIViewController *root = [UIApplication sharedApplication].keyWindow.rootViewController;
        while (root.presentedViewController)
        {
            root = root.presentedViewController;
        }
        //check if is the sepcific view controller
        if (![root isKindOfClass:[GuideViewController class]]
                && ![root isKindOfClass:[LoginController class]]
                && ![root isKindOfClass:[SecurityCodeController class]]
                && ![root isKindOfClass:[GesturePasswordController class]]
            )
        {
        //这里是因为有个弹出窗比较特殊需过滤掉
            NSArray *windows = [UIApplication sharedApplication].windows;
            for (Dialog * dialog in windows)
            {
                if ([dialog isKindOfClass:[Dialog class]])
                {
                    [dialog hide];
                }
            }
            
            UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
            GesturePasswordController *controller = [storyboard instantiateViewControllerWithIdentifier:GESTURE_STORY_BORD];
            controller.isLogin = YES;
            controller.backToFront = YES;
            
            [root presentViewController:controller animated:YES completion:nil];
        }
    }
    self.current = [NSDate date];
}

//在GesturePasswordController.m中上面最终会调用下面这个方法
- (void)display
{
    if (_backToFront)
    {
        //显示关闭前的界面
        [self dismissViewControllerAnimated:YES completion:nil];
    }
    else if (_hasSecurity)
    {   //
        [self performSegueWithIdentifier:@"GestureToHome" sender:self];
    }
    else
    {
        [self performSegueWithIdentifier:@"GestureToSecurity" sender:self];
    }
}