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 循环数组来替换值。
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 WebView 中仅显示最后一个值。我想在 WebView 中显示所有替换的值。
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]];
最佳答案
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,因此会丢失之前的替换。
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 !!!
}
并转储毫无意义的 HtmlReportName
方法。
注意您从后到前使用了 valueArray
和 myValue
数组,请给它们更好的名字!
关于ios - 如何在 Objective-C 中使用 for 循环替换 HTML 值?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14644445/