从NSHomeDirectory（）在UIWebView中加载文件？

Question

我如何在UIWebview中从NSHomeDirectory（）加载文件？这是可能的 ？我的意思是从/ Documents /文件夹加载.pdf文件。

谢谢！

Answer 1

我不知道该怎么DOWS NSHomeDirectory()作品，但你可以看看this post来看看如何获​​得这些文件的完整路径和this other看看如何将一个PDF加载到UIWebView

Answer 2

这里是你如何可以下载，阅读和本地存储PDF的iPhone应用程序：

首先创建一个UIWebView并包括< < UIWebViewDelegate >>

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES); 
    NSString *documentsPath = [paths objectAtIndex:0]; 
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"YourPDF.pdf"]; 
if(![[NSFileManager defaultManager] fileExistsAtPath:filePath]){ 
      // download file , here "https://s3.amazonaws.com/hgjgj.pdf" = pdf downloading link 
     NSData *pdfData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:@"https://s3.amazonaws.com/hgjgj.pdf"]]; 
      //Store the downloaded file in documents directory as a NSData format 
     [pdfData writeToFile:filePath atomically:YES]; 
    } 

    NSURL *url = [NSURL fileURLWithPath:filePath]; 
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; 
    [yourWebView setUserInteractionEnabled:YES]; 
    [yourWebView setDelegate:self]; 
    yourWebView.scalesPageToFit = YES; 
    [yourWebView loadRequest:requestObj]; 

或者，如果你只是想从你的资源文件夹读/加载PDF然后简单地做到这一点：

 NSString* filePath= [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"pdf"]]; 
    /// or you can even read docs file as : pathForResource:@"sample" ofType:@"docx"] 
    NSURL *url = [NSURL fileURLWithPath:filePath]; 
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; 
    [yourWebView setUserInteractionEnabled:YES]; 
    [yourWebView setDelegate:self]; 
    yourWebView.scalesPageToFit = YES; 
    [yourWebView loadRequest:requestObj];