如何延迟摇动通知

Question

我想延迟震动5秒钟，因为如果用户持续摇动设备，则响应显示为空。所以这就是为什么我要把震动推迟到n，除非响应还活着。

这是我的代码

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event {

    if (motion == UIEventSubtypeMotionShake) {

        [FlurryAnalytics logEvent:@"User shaked to update"];

        [[NSNotificationCenter defaultCenter] postNotificationName:@"CheckWeather" object:nil];

        [[NSNotificationCenter defaultCenter] postNotificationName:@"startWeatherNeue" object:nil];

        if ( [super respondsToSelector:@selector(motionEnded:withEvent:)] )

            [super motionEnded:motion withEvent:event];

    }
}

Answer 1

要稍后执行某些选择器，您可以使用：

- (void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(NSTimeInterval)delay

Answer 2

在目标c中我使用 sleep（6）进行停止处理， 把睡眠（6）放在你被解雇的通知代码中： -

-(void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event {

if (motion == UIEventSubtypeMotionShake) {

 sleep(6);

[FlurryAnalytics logEvent:@"User shaked to update"];

[[NSNotificationCenter defaultCenter] postNotificationName:@"CheckWeather" object:nil];

[[NSNotificationCenter defaultCenter] postNotificationName:@"startWeatherNeue" object:nil];

if ( [super respondsToSelector:@selector(motionEnded:withEvent:)] )

    [super motionEnded:motion withEvent:event];

    } 
 }

然后处理停止6秒钟，然后在6次借调后通知点火可能对你有帮助

其他

你也使用NSTimer： -

在NSTimer中你在if else条件下检查你的响应数组计数＆gt; 0，当你的响应数组＆gt;时，用1秒调用方法0然后调用NSNOtification方法

这里是我的例子： - 使用NSTimer

  -(void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event 
 {

  self.TimeOfActiveUser = [NSTimer scheduledTimerWithTimeInterval:01.0  target:self   selector:@selector(checkInfoString) userInfo:nil repeats:YES];
 }


 -(IBAction)checkInfoString
 {

    if([responsearray count]>0)
    {
    [FlurryAnalytics logEvent:@"User shaked to update"];

    [[NSNotificationCenter defaultCenter] postNotificationName:@"CheckWeather" object:nil];

    [[NSNotificationCenter defaultCenter] postNotificationName:@"startWeatherNeue" object:nil];

        if ( [super respondsToSelector:@selector(motionEnded:withEvent:)] )
        {
          [super motionEnded:motion withEvent:event];
         } 

    }
   else
    {

     NSLOG
    }
 }