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AirPrint 的 Objective-C 代码

发布于 2024-11-01 19:55:49 字数 64 浏览 0 评论 0原文

如何在 Objective-C 中使用 IBAction 方法使用 AirPrint 打印 UITextView？

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顾冷 2024-11-08 19:55:49

检查是否可以打印：

if ([UIPrintInteractionController isPrintingAvailable])
{
    // Available
} else {
    // Not Available
}

单击按钮后打印：

-(IBAction) buttonClicked: (id) sender;
{
    NSMutableString *printBody = [NSMutableString stringWithFormat:@"%@, %@",self.encoded.text, self.decoded.text];
    [printBody appendFormat:@"\n\n\n\nPrinted From *myapp*"];

     UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
     pic.delegate = self;

     UIPrintInfo *printInfo = [UIPrintInfo printInfo];
     printInfo.outputType = UIPrintInfoOutputGeneral;
     printInfo.jobName = self.titleLabel.text;
     pic.printInfo = printInfo;

     UISimpleTextPrintFormatter *textFormatter = [[UISimpleTextPrintFormatter alloc] initWithText:printBody];
     textFormatter.startPage = 0;
     textFormatter.contentInsets = UIEdgeInsetsMake(72.0, 72.0, 72.0, 72.0); // 1 inch margins
     textFormatter.maximumContentWidth = 6 * 72.0;
     pic.printFormatter = textFormatter;
     [textFormatter release];
     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);
     }
     };

    [pic presentFromBarButtonItem:self.rightButton animated:YES completionHandler:completionHandler];

}

最初由 '87vert' 在 iPhone Dev SDK 发布： Airprint 教程 - 简单打印文件

Check whether printing is available:

if ([UIPrintInteractionController isPrintingAvailable])
{
    // Available
} else {
    // Not Available
}

Print after button click:

-(IBAction) buttonClicked: (id) sender;
{
    NSMutableString *printBody = [NSMutableString stringWithFormat:@"%@, %@",self.encoded.text, self.decoded.text];
    [printBody appendFormat:@"\n\n\n\nPrinted From *myapp*"];

     UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
     pic.delegate = self;

     UIPrintInfo *printInfo = [UIPrintInfo printInfo];
     printInfo.outputType = UIPrintInfoOutputGeneral;
     printInfo.jobName = self.titleLabel.text;
     pic.printInfo = printInfo;

     UISimpleTextPrintFormatter *textFormatter = [[UISimpleTextPrintFormatter alloc] initWithText:printBody];
     textFormatter.startPage = 0;
     textFormatter.contentInsets = UIEdgeInsetsMake(72.0, 72.0, 72.0, 72.0); // 1 inch margins
     textFormatter.maximumContentWidth = 6 * 72.0;
     pic.printFormatter = textFormatter;
     [textFormatter release];
     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);
     }
     };

    [pic presentFromBarButtonItem:self.rightButton animated:YES completionHandler:completionHandler];

}

Originally posted by '87vert' at iPhone Dev SDK: Airprint Tutorial - Simple Print File

回复收藏 0 原文

陌上芳菲 2024-11-08 19:55:49

以下方法使用要打印的文件的名称以及您希望显示airprint 弹出窗口的条形按钮代码。
它对我有用，我确信会有帮助

-(void)printJob:(int)jobType:(NSString*)jobName:(UIBarButtonItem *)barButton{

NSString *path;
if ([jobName isEqualToString:@"Printout.png"]) {
    path= [self documentsPathForFileName:@"Printout.png"];
}

NSData *mydata=[NSData dataWithContentsOfFile:path];
UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = [path lastPathComponent];
printInfo.duplex = UIPrintInfoDuplexLongEdge;
pic.printInfo = printInfo;
pic.showsPageRange = YES;
pic.printingItem = mydata;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
    if (!completed && error) {
        NSLog(@"Printing could not complete because of error: %@", error);
    }
};

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

}

The following method uses the name of the file to be printed and also the bar button code from where you want the airprint popup to be shown.
It works for me and im sure will be helpfull

-(void)printJob:(int)jobType:(NSString*)jobName:(UIBarButtonItem *)barButton{

NSString *path;
if ([jobName isEqualToString:@"Printout.png"]) {
    path= [self documentsPathForFileName:@"Printout.png"];
}

NSData *mydata=[NSData dataWithContentsOfFile:path];
UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = [path lastPathComponent];
printInfo.duplex = UIPrintInfoDuplexLongEdge;
pic.printInfo = printInfo;
pic.showsPageRange = YES;
pic.printingItem = mydata;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
    if (!completed && error) {
        NSLog(@"Printing could not complete because of error: %@", error);
    }
};

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

}

回复收藏 0 原文

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