blocks|key|789739|text|[webView+loadata:data+MIMEType:@"application/pdf"+textEncodingName:@"UTF-8"+baseURL:nil];|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|789740|这应该对你有用，如果没有，你可以像V1ru8建议的那样把它写到一个文件中，但在大多数情况下这是一个额外的步骤。|unstyled|789741|希望这能有所帮助|789742|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>[webView loadata:data MIMEType:@"application/pdf" textEncodingName:@"UTF-8" baseURL:nil];
</code></pre>

That should do the trick for you, if it doesn't you can write it to a file as V1ru8 suggests, but that is an extra step in most of the cases. 

Hope this will helps

blocks|key|5012040|text|我在打字的时候已经回答了自己的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5012041|所以我假设我没有给它一个正确的NSData对象。|offset|length|style|CODE|5012042|5012043|我的Base64解码错误。|5012044|使用下面这句话就像是一种魔力：|5012045|[webview+loadData:fileData+MIMEType:@"application/pdf"+textEncodingName:@"utf-8"+baseURL:nil];|code-block|syntax|javascript|5012046|我只是张贴，以便其他人可以看到它，他们有同样的问题。|5012047|entityMap^0|0|F|6|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|10|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|12|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|13|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|U|$]]

I already answered my own question when I was typing it.

<blockquote>
 So I assume I'm not giving it a correct <code>NSData</code> object.
</blockquote>

My Base64 decoding was wrong.

Using this statement works like a charm:

<pre><code>[webview loadData:fileData MIMEType:@"application/pdf" textEncodingName:@"utf-8" baseURL:nil];
</code></pre>

I'm just posting so other people can look at it of they have the same problem.

blocks|key|5012091|text|除了已经提供的答案之外，我还发现在包含UIViewController的初始化器函数中将NSData*加载到UIWebView中是不起作用的，并且不会出现错误。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5012092|需要在viewDidLoad函数中将NSData*加载到UIWebView中。|5012093|entityMap^0|18|7|1I|9|0|3|B|I|7|S|9|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|I|$]]

In addition to the already provided answers, I've found that loading <code>NSData*</code> into a <code>UIWebView</code> in the initializer function of a containing UIViewController doesn't work and there'll be no error.

The <code>NSData*</code>needs to be loaded into the <code>UIWebView</code> in the <code>viewDidLoad</code> function.

blocks|key|786145|text|最简单的方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|786146|UIWebView+*webview+=+[[UIWebView+alloc]+init];
[self.view+addSubview:webview];
NSString+*path+=+[[NSBundle+mainBundle]+pathForResource:@"pdfFileName"+ofType:@"pdf"];
NSURL+*targetURL+=+[NSURL+fileURLWithPath:path];
NSURLRequest+*request+=+[NSURLRequest+requestWithURL:targetURL];
[webview+loadRequest:request];|code-block|syntax|javascript|786147|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The easiest way to do that:

<pre><code>UIWebView *webview = [[UIWebView alloc] init];
[self.view addSubview:webview];
NSString *path = [[NSBundle mainBundle] pathForResource:@"pdfFileName" ofType:@"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webview loadRequest:request];
</code></pre>

blocks|key|5012143|text|UIWebView已弃用，请使用WKWebView+https://developer.apple.com/documentation/webkit/wkwebview?language=objc|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5012144|Objective-C示例：|5012145|#import+<WebKit/WebKit.h>|code-block|syntax|javascript|5012146|..。|5012147|CGRect+screen+=+[[UIScreen+mainScreen]+bounds];
CGFloat+width+=+CGRectGetWidth(screen);
CGFloat+height+=+CGRectGetHeight(screen);


WKWebView+*wkwebView+=+[[WKWebView+alloc]+initWithFrame:CGRectMake(0,+0,+width,+height)];
//UIWebView+*webView+=+[[UIWebView+alloc]+initWithFrame:CGRectMake(0,+0,+width,+height)];+//DEPRECATED

NSURL+*targetURL+=+[[NSBundle+mainBundle]+URLForResource:@"fileName"+withExtension:@"pdf"];
NSURLRequest+*request+=+[NSURLRequest+requestWithURL:targetURL];
//[webView+loadRequest:request];+//DEPRECATED
[wkwebView+loadRequest:request];

//[self.view+addSubview:webView];+//DEPRECATED
[self.view+addSubview:wkwebView];|5012148|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/documentation/webkit/wkwebview?language=objc^0|Q|20|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

UIWebView is DEPRECATED, use WKWebView
<a href="https://developer.apple.com/documentation/webkit/wkwebview?language=objc" rel="nofollow noreferrer">https://developer.apple.com/documentation/webkit/wkwebview?language=objc</a>

Objective-C Example:

<pre><code>#import &lt;WebKit/WebKit.h&gt;
</code></pre>

...

<pre><code>CGRect screen = [[UIScreen mainScreen] bounds];
CGFloat width = CGRectGetWidth(screen);
CGFloat height = CGRectGetHeight(screen);


WKWebView *wkwebView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, width, height)];
//UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, width, height)]; //DEPRECATED

NSURL *targetURL = [[NSBundle mainBundle] URLForResource:@"fileName" withExtension:@"pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
//[webView loadRequest:request]; //DEPRECATED
[wkwebView loadRequest:request];

//[self.view addSubview:webView]; //DEPRECATED
[self.view addSubview:wkwebView];
</code></pre>

EDIT:
There was something wrong with my Base64 decoding. I searched for a external Base64 decoder and it working just like this:

This is the case:
I have a Base64 encoded byte array I get from a webservice and convert it to NSData:

<pre><code>NSData *data = [Base64 decodeBase64WithString:response];
</code></pre>

And in my Webview Controller I declared:

<pre><code>[webview loadData:fileData MIMEType:@"application/pdf" textEncodingName:@"utf-8" baseURL:nil];
</code></pre>

fileData is the decoded data.

When I run this I get a gray screen.
So I assume I'm not giving it a correct <code>NSData</code> object.

Objective C Load PDF file in UIWebView

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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编辑:我的Base64解码有问题。我搜索了一个外部的Base64解码器，它是这样工作的：情况是这样的:我有一个从webservice获得的Base64编码字节数组，并将其转换为NSData：NSData *data = [Base64 decodeBase64WithString:response];在我的Webvie...

问目标C在UIWebView中加载PDF文件
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