与其他应用程序打开PDF(Open pdf with other apps)

我在显示一个应用程序的PDF文件。我想说明安装在iPhone上唠叨栏上的选项显示的应用程序，可以打开相同的PDF，如果用户选择的任何应用程序（例如对于PDF查看器）的，则PDF应该得到与PDF浏览器应用中打开“打开方式”。

我该怎么做呢？

请帮忙

提前致谢。

Answer 1:

此代码将呈现你正在寻找的OpenIn互动。它适用于iPhone和iPad。 iPad上它的酥料饼。我生成PDF，但如果你仅仅使用一个你有没有需要将writeToFile，在文件路径只手。

// In your header. MyViewController.h
@interface MyViewController : UIViewController <UIDocumentInteractionControllerDelegate>
{
    UIDocumentInteractionController *docController;
}

// In your implementation. MyViewController.m Open Results is hooked up to a button.
- (void)openResults
{
    // Generate PDF Data.
    NSData *pdfData = [self makePDF];

    // Create a filePath for the pdf.
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"Report.pdf"];

    // Save the PDF. UIDocumentInteractionController has to use a physical PDF, not just the data.
    [pdfData writeToFile:filePath atomically:YES];

    // Open the controller.
    docController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:filePath]];
    docController.delegate = self;
    docController.UTI = @"com.adobe.pdf";
    [docController presentOpenInMenuFromBarButtonItem:shareButton animated:YES];
}