How to Create a Custom Uiactivity in Ios

How can I create a custom UIActivity in iOS?

First, create the files. I chose to name mine ActivityViewCustomActivity

Make ActivityViewCustomActivity.h look like this:

#import <UIKit/UIKit.h>

@interface ActivityViewCustomActivity : UIActivity

@end

Make ActivityViewCustomActivity.m look like this:

#import "ActivityViewCustomActivity.h"

@implementation ActivityViewCustomActivity

- (NSString *)activityType
{
    return @"yourappname.Review.App";
}

- (NSString *)activityTitle
{
    return @"Review App";
}

- (UIImage *)activityImage
{  
    // Note: These images need to have a transparent background and I recommend these sizes:
    // iPadShare@2x should be 126 px, iPadShare should be 53 px, iPhoneShare@2x should be 100 
    // px, and iPhoneShare should be 50 px. I found these sizes to work for what I was making.

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
    {
        return [UIImage imageNamed:@"iPadShare.png"];
    }
    else
    {
        return [UIImage imageNamed:@"iPhoneShare.png"];
    }
}

- (BOOL)canPerformWithActivityItems:(NSArray *)activityItems
{
    NSLog(@"%s", __FUNCTION__);
    return YES;
}

- (void)prepareWithActivityItems:(NSArray *)activityItems
{
    NSLog(@"%s",__FUNCTION__);
}

- (UIViewController *)activityViewController
{
    NSLog(@"%s",__FUNCTION__);
    return nil;
}

- (void)performActivity
{   
    // This is where you can do anything you want, and is the whole reason for creating a custom 
    // UIActivity

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=yourappid"]];
    [self activityDidFinish:YES];
}

@end

This is what my image looked like:
Here is the .PSD I made: -- malicious link removed --
And here is the original 250 px .png http://i.imgur.com/pGWVj.png

Now in your view controller do this:

#import "ActivityViewCustomActivity.h"

And now wherever you want to display your UIActivityViewController:

   NSString *textItem = @"Check out the yourAppNameHere app: itunes http link to your app here";
   UIImage *imageToShare = [UIImage imageNamed:@"anyImage.png"];

   NSArray *items = [NSArray arrayWithObjects:textItem,imageToShare,nil];

   ActivityViewCustomActivity *aVCA = [[ActivityViewCustomActivity alloc]init];

   UIActivityViewController *activityVC =
   [[UIActivityViewController alloc] initWithActivityItems:items
                                                  applicationActivities:[NSArray arrayWithObject:aVCA]];

   activityVC.excludedActivityTypes = @[UIActivityTypePostToWeibo, UIActivityTypeAssignToContact, UIActivityTypePrint, UIActivityTypeCopyToPasteboard, UIActivityTypeSaveToCameraRoll];

   activityVC.completionHandler = ^(NSString *activityType, BOOL completed)
   {
        NSLog(@"ActivityType: %@", activityType);
        NSLog(@"Completed: %i", completed);
   };

   if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
   {
      self.popoverController = [[UIPopoverController alloc] initWithContentViewController:activityVC];

      CGRect rect = [[UIScreen mainScreen] bounds];

      [self.popoverController
                     presentPopoverFromRect:rect inView:self.view
                     permittedArrowDirections:0
                     animated:YES];
   }
   else
   {
       [self presentViewController:activityVC animated:YES completion:nil];
   }

How can you customize UIActivityViewController to ONLY include custom UIActivity types?

My colleague was able to figure this out. For anyone wondering how to display only the applicationActivities (custom activities) on the share sheet, this is how I did it.

For activityItems rather than creating an array of strings, create an array of your custom data objects. Then override the canPerform(withActivityItems activityItems: [Any]) method in your custom UIActivity (subclass of UIActivity) to return true if activityItems[o] is CustomItem. Since your activityItems are custom, system will not display other apps on the share sheet. That's it.

In the example below, only your CustomUIActivity will be displayed on the share sheet.

let items = [CustomItem("Hello world")]

let activitySheet = UIActivityViewController(
            activityItems: items,
            applicationActivities: [
                CustomUIActivity()
            ]
        )

class CustomItem {

    let value: String

    required init(value: String) {
        self.value = value
    }

    func getValue() -> String {
        return self.value
    }
}

@objc(CustomUIActivity)
class CustomUIActivity: UIActivity {

    override class var activityCategory: UIActivity.Category {
        return .share
    }

    override var activityType: UIActivity.ActivityType? {
        return .customuiactivity
    }

    override var activityTitle: String? {
        return "Custom"
    }

    override var activityImage: UIImage? {
        return UIImage(named: "custom-icon")
    }

    override func canPerform(withActivityItems activityItems: [Any]) -> Bool {
        if activityItems.count == 1 && activityItems[0] is CustomItem {
            return true
        }
        return false
    }

    var textToShare: String?

    override func prepare(withActivityItems activityItems: [Any]) {
        if let activityItem = activityItems.first as? CustomItem {
            self.textToShare = activityItem.getValue
        }
    }

    override func perform() {
        // perform your custom activity with `textToShare`
        activityDidFinish(true)
    }
}

extension UIActivity.ActivityType {
    static let customuiactivity =
        UIActivity.ActivityType("com.ceylonese.mobile.customuiactivity")
}

Add custom UIActivity for standard apps

As of iOS 6, there is no way to add a custom UIActivity item to built-in apps like Photos, Notes, or Safari.

Custom UIActivity items can only be added to third-party apps.

UIActivity from UIActivityType

Reading through the Apple documentation about this and I read:

“Subclassing Notes

This class must be subclassed before it can be used. The job of an
activity object is to act on the data provided to it and to provide
some meta information that iOS can display to the user. For more
complex services, an activity object can also display a custom user
interface and use it to gather additional information from the user. “

That means you’ll need to create a custom implementation of UIActivity and override its functionality to create the method you wish to use. Like creating a custom implementation of a CollectionViewCell.

UIActivity View Controller with custom row (Like what's App did in edit photo)

You can use an UIAlertController for this:

let alert = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)

let cancel = UIAlertAction(title: "Cancel"), style: .cancel)
{
    _ in
}
alert.addAction(cancel)

let take = UIAlertAction(title: "Take Photo", style: .default)
{
    _ in

    // TODO Do something
}
alert.addAction(take)

let choose = UIAlertAction(title: "Choose Photo", style: .default)
{
    _ in

    // TODO Do something
}
alert.addAction(choose)

let deletePhoto = UIAlertAction(title: "Delete Photo", style: .destructive)
{
    _ in

    // TODO Do something
}
alert.addAction(deletePhoto )

self.present(alert, animated: true, completion: nil)

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