这个错误意味着什么？[__NSCFNumberlength]:unrecognizedselectorsenttoinstance0x6d21350这是我的代码:NSString*urlString=@"http://api.twitter.com/1/statuses/update.json";NSURL*url=[NSURLURLWithString:urlString];NSMutableDictionary*params=[[NSMutableDictionaryalloc]init];[paramssetObject:statusforKey:@"status"];[para
这个错误意味着什么？[__NSCFNumberlength]:unrecognizedselectorsenttoinstance0x6d21350这是我的代码:NSString*urlString=@"http://api.twitter.com/1/statuses/update.json";NSURL*url=[NSURLURLWithString:urlString];NSMutableDictionary*params=[[NSMutableDictionaryalloc]init];[paramssetObject:statusforKey:@"status"];[para
我在应用程序中创建了一个SQLite数据库，填充了它，现在我正在尝试从中读取。该应用程序不断崩溃，这是我收到的logcat:12-3005:53:18.008:E/AndroidRuntime(6205):java.lang.RuntimeException:UnabletostartactivityComponentInfo{com.example.testparsing/com.example.testparsing.Urnik}:android.database.sqlite.SQLiteException:unrecognizedtoken:"4c"(code1):,while
我在应用程序中创建了一个SQLite数据库，填充了它，现在我正在尝试从中读取。该应用程序不断崩溃，这是我收到的logcat:12-3005:53:18.008:E/AndroidRuntime(6205):java.lang.RuntimeException:UnabletostartactivityComponentInfo{com.example.testparsing/com.example.testparsing.Urnik}:android.database.sqlite.SQLiteException:unrecognizedtoken:"4c"(code1):,while
今天在创建java项目时，运行报错，说无法成功创建java程序。Unrecognizedoption:--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMEDError:CouldnotcreatetheJavaVirtualMachine.Error:Afatalexceptionhasoccurred.Programwillexit.解决办法：1、使用最新的jdk版本2、在第三处，选择最新的jdk版本3、选择download会自动下载最新的4、保存后再次运行程序5、等待运行完就可以了。如果运行时还有什么问题，欢迎留言交流。
尝试使用NSCoder时出现错误Player.swift:classPlayer:NSObject,NSCoding{privatevar_playerName:String!privatevar_playerScore:Int!privatevar_playerColor:PlayerColor!//PlayerColorisanenumvarplayerName:String{get{return_playerName}set{_playerName=newValue}}varplayerScore:Int{get{return_playerScore}set{_playerSco
尝试使用NSCoder时出现错误Player.swift:classPlayer:NSObject,NSCoding{privatevar_playerName:String!privatevar_playerScore:Int!privatevar_playerColor:PlayerColor!//PlayerColorisanenumvarplayerName:String{get{return_playerName}set{_playerName=newValue}}varplayerScore:Int{get{return_playerScore}set{_playerSco
我在fabric中看到了数十次崩溃FatalException:NSInvalidArgumentException-[LAContextbiometryType]:unrecognizedselectorsenttoinstance0x1c066aa00这很奇怪，因为我只在iOS11+的LAContext上调用了biometryType。代码:privatestaticvarbiometryType:BiometryType?{letcontext=LAContext()guardcontext.canEvaluatePolicy(.deviceOwnerAuthentication
我在fabric中看到了数十次崩溃FatalException:NSInvalidArgumentException-[LAContextbiometryType]:unrecognizedselectorsenttoinstance0x1c066aa00这很奇怪，因为我只在iOS11+的LAContext上调用了biometryType。代码:privatestaticvarbiometryType:BiometryType?{letcontext=LAContext()guardcontext.canEvaluatePolicy(.deviceOwnerAuthentication
我似乎无法弄清楚我做错了什么会产生以下错误:2015-02-0212:48:17.029InputStreams[14816:221224]-[InputStreams.CustomStreaminitWithData:]:unrecognizedselectorsenttoinstance0x7fda2e1aac30这是我的CustomStream子类。importFoundationclassCustomStream:NSInputStream{letstreamName="MyCustomStream"overrideinit(data:NSData){super.init(da
