How do I call an Objective-C method from Javascript in UIWebView?

Question

I\'m developing a native iPhone app using Phonegap, so everything is done in HTML and JS. I am using the Flurry SDK for analytics and want to use the

[FlurryAPI         


        

Answer 1

PhoneGap has functionality for adding native plugins, to add a Flurry log event plugin for iOS I would do something like this:

Add a PGFlurry PhoneGap plugin class:

PGFlurry.h

#import 

@interface PGFlurry : PGPlugin
- (void)logEvent:(NSArray*)arguments withDict:(NSDictionary*)options;
@end

PGFlurry.m

#import "PGFlurry.h"
#import "FlurryAPI.h"

@implementation PGFlurry
// if you init Flurry somewhere else you can remove this method
- (PGPlugin*) initWithWebView:(UIWebView*)theWebView {
  self = [super init];
  if (self == nil) {
    return nil;
  }

  // init and start Flurry
  [FlurryAPI startSession:@"API key"];

  return self;
}

- (void)logEvent:(NSArray*)arguments withDict:(NSDictionary*)options {
  [FlurryAPI logEvent:[arguments objectAtIndex:0]];
}
@end

Add a JavaScript plugin helper to the www folder:

Flurry.js

PhoneGap.addConstructor(function() {
  if(!window.plugins) {
    window.plugins = {};
  }

  window.plugins.flurry = {
    logEvent: function(name) {
      return PhoneGap.exec("PGFlurry.logEvent", name);
    }
  }
});

Add the plugin to PhoneGap.plist by adding a key/value pair with both the key and value being "PGFlurry" to the "plugins" dictionary.

Now you should be able to use it like this: