NSError code错误列表信息

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Foundation Constants Reference

NSError Codes

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NSError?codes in the Cocoa error domain.

Constants
NSFileNoSuchFileError
File-system operation attempted on non-existent file
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileLockingError
Failure to get a lock on file
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadUnknownError
Read error, reason unknown
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadNoPermissionError
Read error because of a permission problem
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadInvalidFileNameError
Read error because of an invalid file name
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadCorruptFileError
Read error because of a corrupted file, bad format, or similar reason
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadNoSuchFileError
Read error because no such file was found
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadInapplicableStringEncodingError
Read error because the string encoding was not applicable.
Access the bad encoding from the?userInfo?dictionary using the?NSStringEncodingErrorKey?key.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadUnsupportedSchemeError
Read error because the specified URL scheme is unsupported
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileReadTooLargeError
Read error because the specified file was too large.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSFileReadUnknownStringEncodingError
Read error because the string coding of the file could not be determined
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSFileWriteUnknownError
Write error, reason unknown
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileWriteNoPermissionError
Write error because of a permission problem
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileWriteInvalidFileNameError
Write error because of an invalid file name
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileWriteInapplicableStringEncodingError
Write error because the string encoding was not applicable.
Access the bad encoding from the?userInfo?dictionary using the?NSStringEncodingErrorKey?key.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileWriteUnsupportedSchemeError
Write error because the specified URL scheme is unsupported
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileWriteOutOfSpaceError
Write error because of a lack of disk space
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileWriteVolumeReadOnlyError
Write error because because the volume is read only.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSKeyValueValidationError
Key-value coding validation error
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFormattingError
Formatting error (related to display of data)
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSUserCancelledError
The user cancelled the operation (for example, by pressing Command-period).
This code is for errors that do not require a dialog displayed and might be candidates for special-casing.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileErrorMinimum
Marks the start of the range of error codes reserved for file errors
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFileErrorMaximum
Marks the end of the range of error codes reserved for file errors
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSValidationErrorMinimum
Marks the start of the range of error codes reserved for validation errors.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSValidationErrorMaximum
Marks the start and end of the range of error codes reserved for validation errors.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFormattingErrorMinimum
Marks the start of the range of error codes reserved for formatting errors.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSFormattingErrorMaximum
Marks end of the range of error codes reserved for formatting errors.
Available in Mac OS X v10.4 and later.
Declared in?FoundationErrors.h.
NSPropertyListReadCorruptError
An error was encountered while parsing the property list.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSPropertyListReadUnknownVersionError
The version number of the property list is unable to be determined.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSPropertyListReadStreamError
An stream error was encountered while reading the property list.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSPropertyListWriteStreamError
An stream error was encountered while writing the property list.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSPropertyListErrorMinimum
Marks beginning of the range of error codes reserved for property list errors.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSPropertyListErrorMaximum
Marks end of the range of error codes reserved for property list errors.
Available in Mac OS X v10.6 and later.
Declared in?FoundationErrors.h.
NSExecutableErrorMinimum
Marks beginning of the range of error codes reserved for errors related to executable files.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSExecutableNotLoadableError
Executable is of a type that is not loadable in the current process.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSExecutableArchitectureMismatchError
Executable does not provide an architecture compatible with the current process.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSExecutableRuntimeMismatchError
Executable has Objective C runtime information incompatible with the current process.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSExecutableLoadError
Executable cannot be loaded for some other reason, such as a problem with a library it depends on.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSExecutableLinkError
Executable fails due to linking issues.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
NSExecutableErrorMaximum
Marks end of the range of error codes reserved for errors related to executable files.
Available in Mac OS X v10.5 and later.
Declared in?FoundationErrors.h.
FoundationErrors.h
URL Loading System Error Codes
These values are returned as the error code property of an?NSError?object with the domain “NSURLErrorDomain”.
Constants
NSURLErrorUnknown
Returned when the URL Loading system encounters an error that it cannot interpret.
This can occur when an error originates from a lower level framework or library. Whenever this error code is received, it is a bug, and should be reported to Apple.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCancelled
Returned when an asynchronous load is canceled.
A Web Kit framework delegate will receive this error when it performs a cancel operation on a loading resource. Note that an?NSURLConnection?or?NSURLDownload?delegate will not receive this error if the download is canceled.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorBadURL
Returned when a URL is sufficiently malformed that a URL request cannot be initiated
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorTimedOut
Returned when an asynchronous operation times out.
NSURLConnection?will send this error to its delegate when the timeoutInterval in NSURLRequest expires before a load can complete.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorUnsupportedURL
Returned when a properly formed URL cannot be handled by the framework.
The most likely cause is that there is no available protocol handler for the URL.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotFindHost
Returned when the host name for a URL cannot be resolved.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotConnectToHost
Returned when an attempt to connect to a host has failed.
This can occur when a host name resolves, but the host is down or may not be accepting connections on a certain port.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorDataLengthExceedsMaximum
Returned when the length of the resource data exceeds the maximum allowed.
Available in Mac OS X v10.5 and later.
Declared in?NSURLError.h.
NSURLErrorNetworkConnectionLost
Returned when a client or server connection is severed in the middle of an in-progress load.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorDNSLookupFailed
See?NSURLErrorCannotFindHost
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorHTTPTooManyRedirects
Returned when a redirect loop is detected or when the threshold for number of allowable redirects has been exceeded (currently 16).
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorResourceUnavailable
Returned when a requested resource cannot be retrieved.
Examples are “file not found”, and data decoding problems that prevent data from being processed correctly.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorNotConnectedToInternet
Returned when a network resource was requested, but an internet connection is not established and cannot be established automatically, either through a lack of connectivity, or by the user's choice not to make a network connection automatically.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorRedirectToNonExistentLocation
Returned when a redirect is specified by way of server response code, but the server does not accompany this code with a redirect URL.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorBadServerResponse
Returned when the URL Loading system receives bad data from the server.
This is equivalent to the “500 Server Error” message sent by HTTP servers.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorUserCancelledAuthentication
Returned when an asynchronous request for authentication is cancelled by the user.
This is typically incurred by clicking a “Cancel” button in a username/password dialog, rather than the user making an attempt to authenticate.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorUserAuthenticationRequired
Returned when authentication is required to access a resource.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorZeroByteResource
Returned when a server reports that a URL has a non-zero content length, but terminates the network connection “gracefully” without sending any data.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotDecodeRawData
Returned when content data received during an NSURLConnection request cannot be decoded for a known content encoding.
Available in Mac OS X v10.5 and later.
Declared in?NSURLError.h.
NSURLErrorCannotDecodeContentData
Returned when content data received during an NSURLConnection request has an unknown content encoding.
Available in Mac OS X v10.5 and later.
Declared in?NSURLError.h.
NSURLErrorCannotParseResponse
Returned when a response to an NSURLConnection request cannot be parsed.
Available in Mac OS X v10.5 and later.
Declared in?NSURLError.h.
NSURLErrorFileDoesNotExist
Returned when a file does not exist.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorFileIsDirectory
Returned when a request for an FTP file results in the server responding that the file is not a plain file, but a directory.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorNoPermissionsToReadFile
Returned when a resource cannot be read due to insufficient permissions.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorSecureConnectionFailed
Returned when an attempt to establish a secure connection fails for reasons which cannot be expressed more specifically.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorServerCertificateHasBadDate
Returned when a server certificate has a date which indicates it has expired, or is not yet valid.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorServerCertificateUntrusted
Returned when a server certificate is signed by a root server which is not trusted.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorServerCertificateHasUnknownRoot
Returned when a server certificate is not signed by any root server.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorServerCertificateNotYetValid
Returned when a server certificate is not yet valid.
Available in Mac OS X v10.4 and later.
Declared in?NSURLError.h.
NSURLErrorClientCertificateRejected
Returned when a server certificate is rejected.
Available in Mac OS X v10.4 and later.
Declared in?NSURLError.h.
NSURLErrorClientCertificateRequired
Returned when a client certificate is required to authenticate an SSL connection during an NSURLConnection request.
Available in Mac OS X v10.6 and later.
Declared in?NSURLError.h.
NSURLErrorCannotLoadFromNetwork
Returned when a specific request to load an item only from the cache cannot be satisfied.
This error is sent at the point when the library would go to the network accept for the fact that is has been blocked from doing so by the “load only from cache” directive.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotCreateFile
Returned when?NSURLDownload?object was unable to create the downloaded file on disk due to a I/O failure.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotOpenFile
Returned when?NSURLDownload?was unable to open the downloaded file on disk.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotCloseFile
Returned when?NSURLDownload?was unable to close the downloaded file on disk.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotWriteToFile
Returned when?NSURLDownload?was unable to write to the downloaded file on disk.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotRemoveFile
Returned when?NSURLDownload?was unable to remove a downloaded file from disk.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorCannotMoveFile
Returned when?NSURLDownload?was unable to move a downloaded file on disk.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorDownloadDecodingFailedMidStream
Returned when?NSURLDownload?failed to decode an encoded file during the download.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLErrorDownloadDecodingFailedToComplete
Returned when?NSURLDownload?failed to decode an encoded file after downloading.
Available in Mac OS X v10.2 and later.
Declared in?NSURLError.h.
NSURLError.h其实每个FrameWork的Constants都有相关性的define值,所以以后查询相关的FrameWork的就可以如 UIKit Constants
    1 楼    sunqingquan    2012-04-22              学习啦，加油