UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = self.label.text;
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = self.label.text;
IOS AirPrint功能實現必要條件: 設備 A、移動設備 iPad(所有型號) iPhone(3GS 或者 之後的版本) iPod touch