Currently developing an application that involves sending data from JavaScript to a native iOS controller. Wondering what is the best method for sending an array from the iOS controller to a JavaScript file.
Appreciate any guidance, thank you.
Currently developing an application that involves sending data from JavaScript to a native iOS controller. Wondering what is the best method for sending an array from the iOS controller to a JavaScript file.
Appreciate any guidance, thank you.
If you want to trigger your JavaScript function using an array as input, make sure to follow these steps:
NSArray *inputArray = @[@"apple", @"orange", @"banana"];
NSMutableArray *formattedArray = [NSMutableArray array];
// Wrap strings in quotes
for (NSString *item in inputArray) {
[formattedArray addObject:[NSString stringWithFormat:@"\"%@\"", item]];
}
NSString *jsCallString = [NSString stringWithFormat:@"yourJSFunction([%@]);", [formattedArray componentsJoinedByString:@","]];
[webView stringByEvaluatingJavaScriptFromString:jsCallString]; // For UIWebView
This code will execute the JavaScript function
myJSFunction(["apple","orange","banana"]);I suggest taking a look at this informative NSHipster article for further understanding.
In essence, it is recommended to utilize WKWebView and explore the concept of User Scripts for Injecting Behavior.
Snippet from the mentioned resource:
let script = "document.body.style.background = \"#777\";"
let userScript = WKUserScript(source: script, injectionTime: .AtDocumentEnd, forMainFrameOnly: true)
let userContentController = WKUserContentController()
userContentController.addUserScript(userScript)
let webViewConfig = WKWebViewConfiguration()
webViewConfig.userContentController = userContentController
self.webView = WKWebView(frame: self.view.bounds, configuration: webViewConfig)
It would help to provide more specific details when seeking assistance in the future.
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