Global Variable グローバル変数

NSFileHandleDataAvailableNotification

Posted when the file handle determines that data is currently available for reading in a file or at a communications channel.

Declaration 宣言 

const NSNotificationName NSFileHandleDataAvailableNotification;

Discussion 議論

The observers can then issue the appropriate messages to begin reading the data. To cause the posting of this notification, you must send either waitForDataInBackgroundAndNotify or waitForDataInBackgroundAndNotifyForModes: to an appropriate NSFileHandle object. オブザーバは、そのとき適切なメッセージを発行してデータの読み出しを開始できます。この通知の投函をもたらすには、あなたはwaitForDataInBackgroundAndNotifyまたはwaitForDataInBackgroundAndNotifyForModes:のどちらかを適切なNSFileHandleオブジェクトに送らなければなりません。

The notification object is the NSFileHandle object that sent the notification. 通知オブジェクトは、通知を送ったNSFileHandleオブジェクトです。 This notification doesn’t contain a userInfo dictionary.

See Also 参照

Notifications 通知

NSFileHandleConnectionAcceptedNotification
Posted when a file handle object establishes a socket connection between two processes, creates a file handle object for one end of the connection, and makes this object available to observers.
NSFileHandleReadCompletionNotification
Posted when the file handle reads the data currently available in a file or at a communications channel.
NSFileHandleReadToEndOfFileCompletionNotification
Posted when the file handle reads all data in the file or, in a communications channel, until the other process signals the end of data.