打開外部PDF閱讀器

Question

我的應用程序創建一個PDF，可以在常規menü打開，然後查看，但不是在應用程序。如何以編程方式在ipad reader中打開pdf？

Answer 1

您必須設置委託在頭的視圖控制器：

@interface YourViewController : UIViewController <UIDocumentInteractionControllerDelegate> 

那麼你就必須實現這個方法：

- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller 
{ 
    return self; 
} 

然後，當你發現它的PDF有被打開：

NSString *sPathPDF = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:@"name.pdf"]]; //path example for a local stored pdf 
    NSURL *urlPDF = [NSURL fileURLWithPath:sPathPDF]; 
    UIDocumentInteractionController *dicPDF = [UIDocumentInteractionController interactionControllerWithURL: urlPDF]; 
    [dicPDF setDelegate:self]; 
    [dicPDF presentPreviewAnimated: YES];