In Appcelerator module, ENSURE_UI_THREAD crashes on device - ios

Question

My code is not working on device, could anyone please help..?
- (id) TweetPost : (id) args {
NSArray *arr = args;
_post = [args objectAtIndex: 0];
NSLog(_post, nil);
[_post retain];
ENSURE_UI_THREAD(Tweet, args);
}
- (id) Tweet : (id) args {
NSLog(#"Routine Twitter Module", nil)
if (![_engine isAuthorized]) {
UIViewController *controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine:_engine delegate:self];
if (controller) {
[[TiApp app] showModalController:controller animated: YES];
}
} else {
[_engine sendUpdate: _post];
}
}
While executing this code, on simulator, it works fine but on device the App crashes, instantly after NSLog(_post, nil); in TweetPost method. I think this is due to ENSURE_UI_THREAD(Tweet, args);. Can anyone help me out..?

Answer 1

I have replaced the above both functions with:
- (void) TweetPost : (id) args {
NSArray *arr = args;
_post = [arr objectAtIndex: 0];
[_post retain];
NSLog(_post, nil);
[self Tweet: args];
}
- (void) Tweet : (id) args {
NSLog(#"Routine Twitter Module", nil);
ENSURE_UI_THREAD(Tweet, args);
if (![_engine isAuthorized]) {
UIViewController *controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine:_engine delegate:self];
if (controller) {
[[TiApp app] showModalController:controller animated: YES];
}
} else {
[_engine sendUpdate: _post];
}
}
And this is working fine. I don't know what was the error.