[英]How to print in iOS 4.2?
我想在我的應用程序中集成打印功能。
我要打印的文檔將采用.doc或.txt格式。 我在iPhone開發方面還不是很有經驗,因此很難通過Apple文檔來實現它。
如果有人可以通過發布一些示例代碼來幫助我,那將是一個很大的幫助。
查看適用於iOS的繪圖和打印指南 - 我鏈接到打印部分。 這里有示例代碼和更多示例代碼的良好鏈接。
編輯 :我現在看到您表明您發現難以遵循的文檔。
Word文檔很復雜 - 您需要解析數據,這非常困難。
文本和HTML更容易。 我拿了Apple的HTML示例並將其更改為純文本:
- (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;
UISimpleTextPrintFormatter *textFormatter = [[UISimpleTextPrintFormatter alloc]
initWithText:yourNSStringWithContextOfTextFileHere];
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);
}
};
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[pic presentFromBarButtonItem:sender animated:YES completionHandler:completionHandler];
} else {
[pic presentAnimated:YES completionHandler:completionHandler];
}
}
首先添加UIPrintInteractionControllerDelegate並創建變量
UIPrintInteractionController *printController;
下面的代碼打印所有圖像,文檔,excel,powerpoint,pdf文件適合我:
[self printItem:SomeData withFilePath:YourFilePath];
在上面的代碼中,您提供了文檔/圖像和URL(文件路徑 )的 NSData ,以及printItem的更多代碼:withFilePath: method
-(void)printItem :(NSData*)data withFilePath:(NSString*)filePath{
printController = [UIPrintInteractionController sharedPrintController];
printController.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = [NSString stringWithFormat:@""];
printInfo.duplex = UIPrintInfoDuplexLongEdge;
printController.printInfo = printInfo;
printController.showsPageRange = YES;
//If NSData contains data of image/PDF
if(printController && [UIPrintInteractionController canPrintData:data]) {
printController.printingItem = data;
}else{
UIWebView* webView = [UIWebView new];
printInfo.jobName = webView.request.URL.absoluteString;
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]]];
printController.printFormatter = webView.viewPrintFormatter;
}
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);
}
};
// Check wether device is iPad/iPhone , because UIPrintInteractionControllerDelegate has different methods for both devices
if([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
[printController presentFromRect:self.view.frame inView:self.view animated:YES completionHandler:completionHandler];
}
else {
[printController presentAnimated:YES completionHandler:completionHandler];
}
}
我希望它會有所幫助。 謝謝
//對於Swift以及如果您只想打印圖像首先為圖像創建IBoutlet
@IBOutlet var qrImage : UIImageView?
然后點擊打印按鈕只需添加以下代碼
//In your view controller
@IBAction func printButton(sender: AnyObject) {
let printInfo = UIPrintInfo(dictionary:nil)
printInfo.outputType = UIPrintInfoOutputType.general
printInfo.jobName = "My Print Job"
// Set up print controller
let printController = UIPrintInteractionController.shared
printController.printInfo = printInfo
// Assign a UIImage version of my UIView as a printing iten
printController.printingItem = self.qrImage?.image
// Do it
printController.present(from: self.view.frame, in: self.view, animated: true, completionHandler: nil)
}
嗨這可以幫助你嘗試它並發布如果有任何疑問。
-(IBAction)printFromIphone:(id)sender {
UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = self.documentName;
pic.printInfo = printInfo;
UISimpleTextPrintFormatter *textFormatter = [[UISimpleTextPrintFormatter alloc]
initWithText:yourNSStringWithContextOfTextFileHere];
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);
}
};
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[pic presentFromBarButtonItem:sender animated:YES completionHandler:completionHandler];
} else {
[pic presentAnimated:YES completionHandler:completionHandler];
}
}
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