how to pass self to function in other class in objective c - objective-c

Question

Hi I am new in development of iOS. I make class named socialClass.h
#import <Social/Social.h>
#import <Accounts/Accounts.h>
- (void)facebookSharingStatusCheckCall:(NSString *)url image:(NSString *)img status:(NSString *)text viewCont:(UIViewController *)uiVew;
- (void)facebookForIosSix:(NSString *)url image:(NSString *)img status:(NSString *)text viewCont:(UIViewController *)uiVew;
and in socialClass.m
- (void)facebookSharingStatusCheckCall:(NSString *)url image:(NSString *)img status:(NSString *)text viewCont:(UIViewController *)uiVew
{
if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
NSLog(#"service available");
[self facebookForIosSix:url image:img status:text viewCont:uiVew];
} else {
// facebook for iOS 5 function will be called here
}
}
-(void)facebookForIosSix:(NSString *)url image:(NSString *)img status:(NSString *)text viewCont:(UIViewController *)uiVew
{
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
SLComposeViewController *fbcontroller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
SLComposeViewControllerCompletionHandler myBlock = ^(SLComposeViewControllerResult result){
if (result == SLComposeViewControllerResultCancelled) {
NSLog(#"Post Cancelled");
} else
{
NSLog(#"Post Done");
}
[fbcontroller dismissViewControllerAnimated:YES completion:Nil];
};
fbcontroller.completionHandler =myBlock;
//Adding the Text to the facebook post value from iOS
[fbcontroller setInitialText:text];
//Adding the URL to the facebook post value from iOS
[fbcontroller addURL:[NSURL URLWithString:url]];
//Adding the Image to the facebook post value from iOS
[fbcontroller addImage:[UIImage imageNamed:img]];
[uiVew presentViewController:fbcontroller animated:YES completion:nil];
}
else{
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:#"Sorry"
message:#"You can't Post a Status right now, make sure your device has an internet connection and you have at least one Twitter account setup"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
NSLog(#"UnAvailable");
}
}
Now I call in mainViewController.h
#import "socialClass.h"
and in mainViewController.m
- (IBAction)facebookShareBtn:(id)sender {
[[socialClass facebookSharingStatusCheckCall:[[DataPassing sharedManager] pageURL ]
image:[[DataPassing sharedManager]
pageIMGurl]
status:[[DataPassing sharedManager] pageTEXT]]
viewCont:(UIViewController*)self];
}
When I use this below code with self it gives error. Definitely because there is no self view
[self presentViewController:fbcontroller animated:YES completion:nil];
so i put uiView in function and try to pass self from mainViewController. again error in mainview
How can I use this facebook from other calls function in mainviewcontroller. thx
[EDIT]
i declare socialClass.h in mainViewController and call the function in button
[socialClass facebookForIosSix:...]
This error is comming... after updating to (UIViewController*)self

Answer 1

OK, a couple of things need to change in you function definition.
First you need a - at the front not a +. The plus denotes a class method whereas the - is for an instance method. You are using this like an instance method.
Second you need to include MainViewController.h in your SocialClass.h file. Then name the function like...
- (void)facebookForIosSix:(NSString *)url image:(NSString *)img status:(NSString *)text viewCont:(MainViewController *)mainViewController;
Then in mainViewController you can run...
[socialViewController facebookSharingStatusCheckCall:#"url" image:#"hello.png" status:#"Posting from App" viewCont:self];
this should work fine.
EDIT
If you want to run the function fro multiple places then don't import MainViewController.h and define the function like...
- (void)facebookForIosSix:(NSString *)url image:(NSString *)img status:(NSString *)text viewCont:(UIViewController *)viewController;
then run it like...
[socialViewController facebookSharingStatusCheckCall:#"url" image:#"hello.png" status:#"Posting from App" viewCont:(UIViewController*)self];
TBH, I don't think you'll need to cast it at all but just to be safe you can.
EDIT
You haven't balanced your brackets...
- (IBAction)facebookShareBtn:(id)sender {
[socialClass facebookSharingStatusCheckCall:[[DataPassing sharedManager] pageURL ]
image:[[DataPassing sharedManager] pageIMGurl]
status:[[DataPassing sharedManager] pageTEXT]
viewCont:(UIViewController*)self];
}
This will work.