如何解决错误“无法使用类型为((AnyObject !, NSError！)-> Void)的参数列表调用'findObjectInBackgroundWithBlock' [英] How to fix error "Can't invoke 'findObjectInBackgroundWithBlock' with an argument list of type ((AnyObject!, NSError!) -> Void)

问题描述

对于以下代码，出现Can't invoke 'findObjectInBackgroundWithBlock' with an argument list of type ((AnyObject!, NSError!) -> Void)错误，并且无法在后台运行解析查询.有什么想法吗?

For below code, getting Can't invoke 'findObjectInBackgroundWithBlock' with an argument list of type ((AnyObject!, NSError!) -> Void) error and not able to run the parse query in background. Any thoughts?

var data = Query.findObjectsInBackgroundWithBlock(
        {(object:AnyObject!, error:NSError!) -> Void in

})

推荐答案

如果您使用的是Swift 1.2(Xcode 6.3)，则需要通过以下方式调用该函数:

If you are using swift 1.2 (Xcode 6.3) you need to call the function by:

var data = Query.findObjectsInBackgroundWithBlock({(objects:[AnyObject]?, error:NSError?) -> Void in

})

如果您使用的是Swift 1.1(Xcode 6.1、6.2)，则需要通过以下方式调用该函数:

And if you are using swift 1.1 (Xcode 6.1, 6.2) you need to call the function by:

var data = Query.findObjectsInBackgroundWithBlock({(objects:[AnyObject]?, error:NSError!) -> Void in

})

这是不同的，因为快速更新1.2(使用可选选项进行了更改).

This is different because of the swift update 1.2 which has changes with using optionals.

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