使用IOS AirPrint实现打印功能详解-移动开发

这篇文章主要介绍了使用IOS AirPrint实现打印功能详解，想了解无线打印的同学，一定要看一下

内容

1.什么是AirPrint

其实就是将iOS（iphone,ipad）上的内容，使用支持AirPrint的打印机打印出来。打印过程无线控制，非常方便。

2.第一手资料

学习iOS, 第一手资料肯定非苹果官方文档莫属.
here。（我下面叙述的内容基本上是对文档的总结，英语可以的建议直接看文档。。。）

3.Printer Simulator,使用打印模拟器进行测试

既然涉及打印功能，那么就需要有一台支持AirPrint 功能的打印机进行测试喽，你没有？没关系！苹果已经为我们准备好了模拟器。这个模拟器在Xcode中没有，需要自己到官网下载


- (IBAction)printContent:(id)sender {

    UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];

    if (pic && [UIPrintInteractionController canPrintData: self.myPDFData] ) {

    pic.delegate = self;

     
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];

    printInfo.outputType = UIPrintInfoOutputGeneral;

    printInfo.jobName = [self.path lastPathComponent];

    printInfo.duplex = UIPrintInfoDuplexLongEdge;

    pic.printInfo = printInfo;

    pic.showsPageRange = YES;

    pic.printingItem = self.myPDFData;

     
    void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =

    ^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {

    self.content = nil;

    if (!completed && error)

    NSLog(@"FAILED! due to error in domain %@ with error code %u",

    error.domain, error.code);

    };

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

    [pic presentFromBarButtonItem:self.printButton animated:YES

    completionHandler:completionHandler];

    } else {

    [pic presentAnimated:YES completionHandler:completionHandler];

    }

}

通过在iPhone上测试，显示出的全部是英文的，不要担心，因为这是系统的控件，也就是说系统会自动帮你作国际化处理，你不用作任何事情！
你唯一要作的事–––将Info.plist文件中的第一项 Localization native development region(CFBundleDevelopmentRegion)的值设为 China(zh_CN);

UISimpleTextPrintFormatter—automatically draws and lays out plain-text documents. This formatter allows you to set global properties for the text, such a font, color, alignment, and line-break mode.

UIMarkupTextPrintFormatter—automatically draws and lays out HTML documents.

英文介绍已经很详细了，就不啰嗦了，直接展示出打印HTML文档的代码：


- (IBAction)printContent:(id)sender {

    UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];

    pic.delegate = self;

     
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];

    printInfo.outputType = UIPrintInfoOutputGeneral;

    printInfo.jobName = self.documentName;

    pic.printInfo = printInfo;

     
    UIMarkupTextPrintFormatter *htmlFormatter = [[UIMarkupTextPrintFormatter alloc]

    initWithMarkupText:self.htmlString];

    htmlFormatter.startPage = 0;

    htmlFormatter.contentInsets = UIEdgeInsetsMake(72.0, 72.0, 72.0, 72.0); // 1 inch margins

    pic.printFormatter = htmlFormatter;

    pic.showsPageRange = YES;

     
    void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =

    ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {

    if (!completed && error) {

    NSLog(@"Printing could not complete because of error: %@", error);

    }

    };

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

    [pic presentFromBarButtonItem:sender animated:YES completionHandler:completionHandler];

    } else {

    [pic presentAnimated:YES completionHandler:completionHandler];

    }

}

将UIWebView 界面上显示的内容打印出来。


- (void)printWebPage:(id)sender {

    UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];

    void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =

    ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {

    if(!completed && error){

    NSLog(@"FAILED! due to error in domain %@ with error code %u",

    error.domain, error.code);

    }

    };

    UIPrintInfo *printInfo = [UIPrintInfo printInfo];

    printInfo.outputType = UIPrintInfoOutputGeneral;

    printInfo.jobName = [urlField text];

    printInfo.duplex = UIPrintInfoDuplexLongEdge;

    controller.printInfo = printInfo;

    controller.showsPageRange = YES;

     
    UIViewPrintFormatter *viewFormatter = [self.myWebView viewPrintFormatter];

    viewFormatter.startPage = 0;

    controller.printFormatter = viewFormatter;

     
    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

    [controller presentFromBarButtonItem:printButton animated:YES completionHandler:completionHandler];

    }else

    [controller presentAnimated:YES completionHandler:completionHandler];

}