WebView动态插入/修改内容 [英] WebView Insert / Modify Content dynamically
问题描述
在我的应用程序中，我使用WebView显示内容，
现在可以动态修改内容，需求是这样的，
In my application, i am using WebView to display the content, Now is it possible to modify the content dynamically, the requirement is something like this,
i将从网络获取信息，根据他们，我需要设置style / font /属性，或者当连接的设备没有响应时，我可能需要添加新的文本，
i will get info from network and depending upon them i need to set the style/font/attribute or probably i need to append the new text when the connected device is not responding,
到目前为止我使用下面的代码，
So far i am using following code,
-(void)modifyString:(NSString *)string{
[sourceString stringByAppendingString:errorString :string]
}
-(void)reloadPage{
[[pWebView mainFrame] loadHTMLString:htmlString baseURL:nil];
}
我不认为它的正确方式来实现它，我试图使用
I don’t think its correct way to implement it, i am trying to make use of
[pWebView replaceSelectionWithMarkupString:@"<html><body><p>Hi there </p></br></body></html>"];
没有显示，因为，我没有选择和选择我的问题是
如何设置选择？
but nothing is displaying because, i have not selected and to select my question is How can i set the selection ?
亲爱的
罗汉
推荐答案
不介意
以这种方式解决
在AwakeFromNib方法中，添加以下代码：
Never Mind
Solved it by this way
In AwakeFromNib Method, added following code,
-(void)awakeFromNib{
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"about:blank"]];
//URL Requst Object
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
//Load the request in the UIWebView.
[[pWebView mainFrame ]loadRequest:requestObj];
[pWebView setEditable:YES];
[pWebView setNeedsDisplay:YES];
}
并添加此函数以追加body元素， p>
and added this function to append the body element,
-(void)appendTagToBody:(NSString *)tagName InnerHTML:(NSString *)innerHTML
{
// Gets a list of all <body></body> nodes.
DOMNodeList *bodyNodeList = [[[pWebView mainFrame] DOMDocument] getElementsByTagName:@"body"];
// There should be just one in valid HTML, so get the first DOMElement.
DOMHTMLElement *bodyNode = (DOMHTMLElement *) [bodyNodeList item:0];
// Create a new element, with a tag name.
DOMHTMLElement *newNode = (DOMHTMLElement *) [[[pWebView mainFrame] DOMDocument] createElement:tagName];
// Add the innerHTML for the new element.
[newNode setInnerHTML:innerHTML];
// Add the new element to the bodyNode as the last child.
[bodyNode appendChild:newNode];
}
，只要想更改内容，
-(void)appendString:(NSString *)pString{
[self appendTagToBody:@"div" InnerHTML:@"<div><p> Hi there </p></div>"];
[self setNeedsDisplay:YES];
}
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