从ObjectiveC调用javascript函数 [英] Calling javascript function from objectiveC

问题描述

我在.html文件中有一个函数/方法，我需要从目标C代码中调用该函数.我有一个包含UIWebView的页面，我们需要调用一些参数并将其传递给.html文件中的javascript函数.如果有人有任何答案，请告诉我.谢谢.

I have a function/method in .html file and I need to call that function from objective C code. I have a page with UIWebView and we need to call and pass few parameters to javascript function in .html file. Please let me know if anybody has any answers. Thanks.

推荐答案

假设您在Javascript中具有以下功能

Assuming you have a function like below in Javascript

function getTheName(id)
{
//Some stuff
return name;
}

您可以调用，传递参数并从中获取一个值，如下所示:

You can call , pass parameters and get back a value from it like below

NSString *ID = @"THE_ID";
NSString *theJSMethod = [NSString stringWithFormat:@"getTheName('%@')", ID ];
NSString *returnedValueFromJSMethod = [yourWebViewInstance stringByEvaluatingJavaScriptFromString:theJSMethod];

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