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我创建了 html 文件并替换了 html 文件中的一些值。没事。但我想使用 for 循环并替换值。但我的问题是它只替换最终值。

我的html代码：

<body bgcolor="#F5DA81">
<h1><center>Simple Report</center></h1>
<p> This report contais about comapny details according to contact details.</p>
<center><b><u><h3>Company Details</h3></u></b></center>
    <table>
        <tr><td>Company Name:</td><td><!--company--> </td></tr>
        <tr><td>Company Id  :</td><td><!--companyId--></td></tr>
    </table>
<center><b><u><h3>Contact Details</h3></u></b></center>
    <table>
        <tr><td>Contact Name:</td><td><!--contact--></td></tr>
        <tr><td>Contact Id  :</td><td><!--contactId--></td></tr>
    </table>
</body>

我的 for 循环数组替换值。

NSMutableArray *valueArray = [[NSMutableArray alloc]init];
NSString *va = @"NU";
NSString *va1 = @"My Name";
NSString *va2 = @"WEB";
NSString *va3 = @"My Web System";

[valueArray addObject:va];
[valueArray addObject:va1];
[valueArray addObject:va2];
[valueArray addObject:va3];

NSMutableArray *myValue = [[NSMutableArray alloc]init];
NSString *val = @"<!--company-->";
NSString *val1 = @"<!--companyId-->";
NSString *val2 = @"<!--contact-->";
NSString *val3 = @"<!--contactId-->";

[myValue addObject:val];
[myValue addObject:val1];
[myValue addObject:val2];
[myValue addObject:val3];

NSMutableString *html1=[[NSMutableString alloc]init];

    for(int i = 0 ; i < 4; i++) {

        NSString *myFinalString = [myValue objectAtIndex:i];
        NSString *myVal = [valueArray objectAtIndex:i];
        html1 =[self HtmlReportName:@"myFirst" withReplaceId:myFinalString withValue:myVal];
        i = i + 1;
    }    

    [webView loadHTMLString:html1 baseURL:[[NSBundle mainBundle] resourceURL]];

Html替换方法。

-(NSMutableString *) HtmlReportName:(NSString *)reportName withReplaceId:(NSString *)replaceId withValue:(NSString *)value {
NSMutableString *html;
html = [NSMutableString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:reportName ofType:@"html"] encoding:NSUTF8StringEncoding error:nil];
[html replaceOccurrencesOfString:replaceId withString:value options:0 range:NSMakeRange(0, [html length])];
return html;

}

在我的网络视图中只显示最后一个值。我想在 Web 视图中显示所有替换值。

我编辑的代码::

NSMutableString *html12 = [NSMutableString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"myFirst" ofType:@"html"]                                                           encoding:NSUTF8StringEncoding error:nil];

for (NSUInteger i = 0; i < [valueArray count]; i++) {

    NSString *myFinalString = [myValue objectAtIndex:i];
    NSString *myVal= [valueArray objectAtIndex:i];
    [html12 replaceOccurrencesOfString:myVal
                          withString:myFinalString
                          options:0
                          range:NSMakeRange(0, [html12 length])];
}

 [webView loadHTMLString:html12 baseURL:[[NSBundle mainBundle] resourceURL]];
4

1 回答 1

1

问题是您没有将修改后的 HTML 传递回下一个替换，而是每次都重新加载原始 HTML，因此丢失了上一个替换。

试试这个：

NSMutableString *html = [NSMutableString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:reportName ofType:@"html"]
                                                         encoding:NSUTF8StringEncoding
                                                            error:nil];
NSAssert([myValue count] == [valueArray count], @"Doh!");
for (NSUInteger i = 0; i < [valueArray count]; i++)
{
    NSString *myFinalString = [valueArray objectAtIndex:i];
    NSString *myVal= [myValue objectAtIndex:i];
    [html replaceOccurrencesOfString:myVal
                          withString:myFinalString
                             options:0
                               range:NSMakeRange(0, [html length])];
    // Remove i=i+1 !!!
}

并转储无意义的HtmlReportName方法。

注意你使用了valueArray和myValue数组从后到前，请给他们更好的名字！

于 2013-02-01T10:47:50.883 回答