从同一网络但不同子网中的 iOS 应用程序访问 wifi 打印机
Access wifi printer from iOS app in same network but different subnet
在我的项目中有一个打印选项,我们使用以下代码打印一个简单的 pdf 文件:
UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
if (pic && [UIPrintInteractionController canPrintData: self.myPDFData] ) {
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = @"PrintPdf";
printInfo.duplex = UIPrintInfoDuplexLongEdge;
pic.printInfo = printInfo;
pic.showsPageRange = YES;
pic.printingItem = self.myPDFData;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {
if (!completed && error)
NSLog(@"FAILED! due to error in domain %@ with error code %ld",
error.domain, (long)error.code);
};
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[pic presentFromRect:self.printButton.frame inView:self.view animated:YES completionHandler:^(UIPrintInteractionController *printInteractionController, BOOL completed, NSError *error) {
}];
} else {
[pic presentAnimated:YES completionHandler:completionHandler];
}
}
当我在打印机模拟器中测试时,它工作正常。我的要求是打印机可能位于同一 wifi 的另一个子网上。我该怎么做?
无需更改代码 UIPrintInteractionController 中的任何内容,如果打印机将在同一网络中,则 UIPrintInteractionController
可以发现它,并且您可以从弹出窗口中 select打印机。
在我的项目中有一个打印选项,我们使用以下代码打印一个简单的 pdf 文件:
UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
if (pic && [UIPrintInteractionController canPrintData: self.myPDFData] ) {
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = @"PrintPdf";
printInfo.duplex = UIPrintInfoDuplexLongEdge;
pic.printInfo = printInfo;
pic.showsPageRange = YES;
pic.printingItem = self.myPDFData;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {
if (!completed && error)
NSLog(@"FAILED! due to error in domain %@ with error code %ld",
error.domain, (long)error.code);
};
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[pic presentFromRect:self.printButton.frame inView:self.view animated:YES completionHandler:^(UIPrintInteractionController *printInteractionController, BOOL completed, NSError *error) {
}];
} else {
[pic presentAnimated:YES completionHandler:completionHandler];
}
}
当我在打印机模拟器中测试时,它工作正常。我的要求是打印机可能位于同一 wifi 的另一个子网上。我该怎么做?
无需更改代码 UIPrintInteractionController 中的任何内容,如果打印机将在同一网络中,则 UIPrintInteractionController
可以发现它,并且您可以从弹出窗口中 select打印机。