具体CKEditor怎么加入到项目中并引用，我就不多说了，很简单。
http://ckeditor.com/ 官网，或者google都能找到
下面是引入后的目录结构，供参考，其中iOS5Editor.html是自己创建的，随便起名字。
iOS5Editor.html的代码如下：
<head>
<title>Replace Textareas by Class Name — CKEditor Sample</title>
<meta content="text/html; charset=utf-8" http-equiv="content-type" />
<script type="text/javascript" src="ckeditor.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
function getData()
{
alert(CKEDITOR.instances.editor1.getData()); ;
}
</script>
</head>
<body>
<p>
<label for="editor1">
Editor 1:</label>
<textarea class="ckeditor" cols="80" id="editor1" name="editor1" rows="10" style="margin-top:199px;"><p>This is some <strong>sample text</strong>. You are using <a href="http://ckeditor.com/">CKEditor</a>.</p></textarea>
</p>
<script type="text/javascript">
//<![CDATA[
CKEDITOR.replace( 'editor1',
{
toolbar : 'MyToolbar'
});
//]]>
</script>
<p>
<!--input type="button" value="Button" onMouseDown="getData()">
</p-->
</body>
ViewController中代码片段如下。
读取iOS5Editor.html，然后放到UIWebView中，这时候就能看到效果了。
NSString *path = [[NSBundle mainBundle] pathForResource:@"iOS5Editor" ofType:@"html"];
NSString *htmlString = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
NSURL *url = [NSURL fileURLWithPath:path];
_webView = [[UIWebView alloc] initWithFrame:CGRectMake(20, 50, self.view.frame.size.width-40, self.view.frame.size.height-200)];
_webView.backgroundColor = [UIColor grayColor];
[_webView loadHTMLString:htmlString baseURL:url];
_webView.delegate = self;
[self.view addSubview:_webView];
如果想获取html中的内容，写个button事件，看下面代码：
- (void)sendMail:(id)sender
{
NSString *msg = [_webView stringByEvaluatingJavaScriptFromString:@"CKEDITOR.instances.editor1.getData()"];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:msg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
[alert release];
}
