Phonegap iOS plugin- how to access callback in didFinishWithResult - ios

Question

This is some code from my sms plugin for phonegap. I'm trying to make callbacks work properly: https://github.com/aharris88/phonegap-sms-plugin/issues/11
Here's the code I'm working on. You can see that I get the callback function at the beginning of the send method like this:
NSString* callback = command.callbackId;
Then I present an MFMessageComposeViewController and I need to call that callback when it finishes. So I'm using the messageComposeViewController:didFinishWithResult:, but how can I access that callback function that I need to call?
#import "Sms.h"
#import <Cordova/NSArray+Comparisons.h>
#implementation Sms
- (CDVPlugin *)initWithWebView:(UIWebView *)theWebView {
self = (Sms *)[super initWithWebView:theWebView];
return self;
}
- (void)send:(CDVInvokedUrlCommand*)command {
NSString* callback = command.callbackId;
if(![MFMessageComposeViewController canSendText]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Notice"
message:#"SMS Text not available."
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
return;
}
MFMessageComposeViewController* composeViewController = [[MFMessageComposeViewController alloc] init];
composeViewController.messageComposeDelegate = self;
NSString* body = [command.arguments objectAtIndex:1];
if (body != nil) {
[composeViewController setBody:body];
}
NSArray* recipients = [command.arguments objectAtIndex:0];
if (recipients != nil) {
[composeViewController setRecipients:recipients];
}
[self.viewController presentViewController:composeViewController animated:YES completion:nil];
[[UIApplication sharedApplication] setStatusBarHidden:YES];
}
#pragma mark - MFMessageComposeViewControllerDelegate Implementation
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result {
int webviewResult = 0;
CDVPluginResult* pluginResult = nil;
switch(result) {
case MessageComposeResultCancelled:
webviewResult = 0;
break;
case MessageComposeResultSent:
webviewResult = 1;
break;
case MessageComposeResultFailed:
webviewResult = 2;
break;
default:
webviewResult = 3;
break;
}
[self.viewController dismissViewControllerAnimated:YES completion:nil];
[[UIApplication sharedApplication] setStatusBarHidden:NO];
if (webviewResult == 1) {
pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK];
} else {
pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR messageAsString:#"Arg was null"];
}
[self.commandDelegate sendPluginResult:pluginResult callbackId:callback];
}
#end

Answer 1

You'll want to store the callback ID as a property on the class.
#interface Sms
#property (nonatomic, strong) NSString *callbackId
#end
And then store it when you are in your send method.
- (void)send:(CDVInvokedUrlCommand*)command {
self.callbackId = command.callbackId;
You can then access it again from your delegate method:
NSString *callbackId = self.callbackId;
You should be good to go.