ios - 在IOS本地保存pdf

Question

您好，我在 IOS 中使用 Quartz 框架创建了 pdf 文件。我需要在本地文件夹中下载该 pdf 文件，就像在模拟器中保存图像一样。任何人都可以告诉我如何执行此操作。

我创建pdf的代码

     -(NSString*)getPDFFileName
     {
     NSString* fileName = @"Invoice.PDF";

     NSArray *arrayPaths =
     NSSearchPathForDirectoriesInDomains(
                                    NSDocumentDirectory,
                                    NSUserDomainMask,
                                    YES);
     NSString *path = [arrayPaths objectAtIndex:0];
     NSString* pdfFileName = [path stringByAppendingPathComponent:fileName];

     return pdfFileName;

    }

    -(void)showPDFFile


    {
    NSString* fileName = @"Invoice.PDF";

    NSArray *arrayPaths =
    NSSearchPathForDirectoriesInDomains(
                                    NSDocumentDirectory,
                                    NSUserDomainMask,
                                    YES);
    NSString *path = [arrayPaths objectAtIndex:0];
    NSString* pdfFileName = [path stringByAppendingPathComponent:fileName];

    UIWebView* webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

    NSURL *url = [NSURL fileURLWithPath:pdfFileName];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [webView setScalesPageToFit:YES];
    [webView loadRequest:request];

    [self.view addSubview:webView];    
     }

  - (void)viewDidLoad
   {
  NSString* fileName = [self getPDFFileName];

  [PDFRenderer drawPDF:fileName];
  [self showPDFFile];

  [super viewDidLoad];
} 

提前致谢..

Answer 1

这将满足您的需求。

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectoryPath = [paths objectAtIndex:0];
    NSString *pdfDirectoryString = [NSString stringWithFormat:@"%@/YOUR_FILE_NAME", documentsDirectoryPath];

    NSError *error = nil;
    if (![YOUR_PDF_DATA writeToFile:pdfDirectoryString options:NSDataWritingAtomic error:&error])
        NSLog(@"Error: %@", [error localizedDescription]);