xcode 无法将 '(Bool, NSError!) -> Void' 类型的值转换为预期的参数类型 'ACAccountStoreRequestAccessCompletionHandler!'
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Cannot convert value of type '(Bool, NSError!) -> Void' to expected argument type 'ACAccountStoreRequestAccessCompletionHandler!'
提问by Devhess
Since upgrading on Xcode 8 (Beta 1) and Swift 3 I have an error in this line:
自从在 Xcode 8 (Beta 1) 和 Swift 3 上升级后，我在这一行出现错误：
account.requestAccessToAccounts(with: accountType, options: nil, completion: {(success: Bool, error: NSError!) -> Void in
It says:
它说：
Cannot convert value of type '(Bool, NSError!) -> Void' to expected argument type 'ACAccountStoreRequestAccessCompletionHandler!'
无法将 '(Bool, NSError!) -> Void' 类型的值转换为预期的参数类型 'ACAccountStoreRequestAccessCompletionHandler!'
Before that line, I defined "account" and "accountType":
在该行之前，我定义了“account”和“accountType”：
let account = ACAccountStore()
let accountType = account.accountType(
withAccountTypeIdentifier: ACAccountTypeIdentifierTwitter)
This is my (with Xcode 7 and Swift 2 working) code:
这是我的（使用 Xcode 7 和 Swift 2 工作）代码：
func getTimeline() {
//https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=twitterapi&count=2
let account = ACAccountStore()
let accountType = account.accountType(
withAccountTypeIdentifier: ACAccountTypeIdentifierTwitter)
account.requestAccessToAccounts(with: accountType, options: nil,
completion: {(success: Bool, error: NSError!) -> Void in
if success {
let arrayOfAccounts =
account.accounts(with: accountType)
if arrayOfAccounts.count > 0 {
let twitterAccount = arrayOfAccounts.last as! ACAccount
let requestURL = URL(string:
"https://api.twitter.com/1.1/statuses/user_timeline.json")
let parameters = ["screen_name": self.userName!,
"count" : "20"]
let postRequest = SLRequest(forServiceType:
SLServiceTypeTwitter,
requestMethod: SLRequestMethod.GET,
url: requestURL,
parameters: parameters)
postRequest.account = twitterAccount
postRequest.perform(
handler: {(responseData: Data!,
urlResponse: HTTPURLResponse!,
error: NSError!) -> Void in
if error != nil {
Crashlytics.sharedInstance().recordError(error)
}
do {
self.dataSource = try JSONSerialization.jsonObject(with: responseData, options: JSONSerialization.ReadingOptions.mutableLeaves) as! [AnyObject]
if self.dataSource.count != 0 {
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
} catch {
print("catching")
}
})
}
} else {
print("Failed to access account")
}
})
}
回答by Stéphane de Luca
You should update your code as follows:
您应该按如下方式更新您的代码：
account.requestAccessToAccounts(with: accountType, options: [:]) {
(success: Bool, error: Error?) -> Void in
// blah blah: the rest of the code
}
This version is for Xcode 8 GM Swift3 (regular version)
此版本适用于 Xcode 8 GM Swift3（普通版）
回答by ShervinJam
In xcode 8.2 and swift 3 , I checked this method. Remove Bool and NSError infront of success and error and it will be okey.
在 xcode 8.2 和 swift 3 中，我检查了这个方法。删除成功和错误前面的 Bool 和 NSError 就可以了。
account.requestAccessToAccounts(with: accountType, options: nil,
completion: {(success, error) -> Void in
I hope it will help you, Good Luck :)
希望能帮到你，祝你好运:)
