Is it possible to present a UIDocumentInteractionController for multiple items? - ios

The Photos app in iOS 7 allows you to select multiple photos, tap "Share" and be presented with a document interaction controller with the appropriate options for multiple items.
The Camera app goes one further and even updates the document interaction controller's options in real time as you select and deselect photos.
However, the UIDocumentInteractionController class seems only to allow for a single URL parameter.
Is it possible to do what the Photos and Camera apps do using public API?

- (void)showShareDialog
{
UIImage *image = [UIImage imageWithCGImage:self.imgView.image.CGImage];
NSArray* dataToShare = #[image, image2, image3]; // ...or whatever pieces of data you want to share.
UIActivityViewController* activityViewController =
[[UIActivityViewController alloc] initWithActivityItems:dataToShare
applicationActivities:nil];
[self presentViewController:activityViewController animated:YES completion:^{
}];
}
I think this should help

Store the URLs of the selected items in an array. You can change the actions displayed depending upon the number of elements in the array. After the user makes his/her selection, you can loop through the URLs and apply the selected action.

Related

Sharing functionality for an rss feed article

My rss app is almost complete but I need to have a "share" button on the top right corner of the web view for the articles. I have the code setup so far to show the "action" button right next to the title of the article but since there is no real code implemented it doesn't do anything :
I implemented that by basing it on code that was used for the table view cells where there is a "refresh" option implemented and I just changed the icon. I used a free open source project to put this app together and i'm having a little bit of trouble figuring out how to make that button show the share sheet that pulls up from the bottom of the app, like this:
(image from google)
I tried to implement a button dirtectly into the nav bar but I can't since the web view covers the whole screen:
So, since I couldn't put a button directly into the controller I had to encode it in like so:
In my RSSDetail.m class inside the " -(void)viewDidLoad { " :
self.navigationItem.rightBarButton = [[UIBarButtonItem = [[UIBarButtonItem
alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemAction target:self
action#selector(shareButton)];
and I also have this inside the same class file :
-(void) shareButton {
self.webView.userInteractionEnabled = YES;
self.webView.aplha = 0.3;
}
So as you can see, this little bit of code in that class puts the icon where I want it. But my question is, is there code i can implement into my " -(void) shareButton " method that will implement the sharing functionality?
Also, I need for the button to actually say "Share" as opposed to the icon, is there anyway I can change the code for the "Action" rightBarButton method to allow me to input the word instead of an icon?
Thanks in advance
As I understand you want to implement iOS native sharing functionality. Here is an example of implementation:
- (void)shareButtonPressed {
// 1
// If you want to use UIImage, make sure you have image with that name, otherwise it will crash.
NSArray *activityItems = #[#"Message to share", [UIImage imageNamed:#"imageToShare"]];
// 2
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];
// 3
activityViewController.excludedActivityTypes = #[UIActivityTypeCopyToPasteboard, UIActivityTypeAirDrop, UIActivityTypeAssignToContact, UIActivityTypeAddToReadingList, UIActivityTypePrint, UIActivityTypeSaveToCameraRoll, UIActivityTypeMessage, UIActivityTypeMail];
// 4
[activityViewController setCompletionHandler:^(__unused NSString *activityType, __unused BOOL completed){
// Custom completion implementation
}];
[self presentViewController:activityViewController animated:YES completion:NULL];
}
Description:
Prepare activity items which you want to share such string, image, URL.
Initialize activity view controller with the items you want to share + custom activities (only if needed). Custom activities means that you will create your own buttons using UIActivity with own actions, images, titles (more info here). For example, implement sharing to a third party app which does not have share extension.
Here you can specify excluded activity types. In this example I have removed everything such as copy, airdrop and etc.
In completion block you can see which activityType was selected and whether user cancelled or not.
More information on UIActivityViewController can be found here.
Regarding second part of your question about UIBarButtonItem. UIBarButtonItem can be initialised with custom title using this:
UIBarButtonItem *shareButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Share" style:UIBarButtonItemStylePlain target:self action:#selector(shareButtonPressed)];
self.navigationItem.rightBarButtonItem = shareButtonItem;
Be aware that UIBarButtonItem has UIBarButtonItemStyle which you can change. UIBarButtonItemStylePlain (will create a button with a regular font) and UIBarButtonItemStyleDone (will create a button with a bold font).

Network Sharing Apps within the App

I am enable to get the answer from last couple of Weeks that
Actually I have 1 tableview contains some text, and I have Sharing bar button if iClicked that Sharing Barbutton At Index i need to Share that text to Email,FB,WhatsuP,and other that are Installed and supported to send text.
finally my requirement is when I clicked the bar button, i need to open the view that contains the list of Installed Apps in our device(Email,FB,WhatsUp,etc)That are supported to send text.
and When I clicked The Item in the List, text should send to That App.
I have no idea and I am searching for it from few couple of weeks
Please Help me
Thanks
Use UIActivityViewController
NSString *shareText = #"some text to share";
NSURL *url = [NSURL URLWithString:#"http://www.someurl.com"];
NSArray *itmes = #[shareText, items];
UIActivityViewController *activityVC = [[UIActivityViewController alloc]initWithActivityItems:items applicationActivities:nil];
If you wish you can also exlude some of the items in the activityVC like
activityVC.excludeActivityTypes = #[UIActivityTypePostToFlickr, UIActivityTypePostToTensentWeibo];
// and as many more you like

How to send text (or URL) AND image with AirDrop at the same time

I am trying to share a text (or an URL) and an image with AirDrop and it seems it sends only the image. It works fine with other sharing activities (Facebook, Twitter, Mail, Message etc.). Is it possible to share two items with AirDrop?
Here is how I use the UIActivityViewController:
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:#[self.activityItem, self.attachedImage] applicationActivities:nil];
self.attachedImage is an UIImage and self.activityItem is a subclass of UIActivityItemProvider which returns different text for different activity types in delegate method
- (id)activityViewController:(UIActivityViewController *)activityViewController itemForActivityType:(NSString *)activityType
Does anyone have an idea? Thanks!
EDIT:
I also tried without subclassing UIActivityItemProvider and passed directly some text. Didn't work.
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:#[#"some text", self.attachedImage] applicationActivities:nil];
As a note, it works if I want to share multiple texts OR multiple images (UIImage):
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:#[#"text 1", #"text 2"] applicationActivities:nil];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:#[attachedImage1, attachedImage2] applicationActivities:nil];
Try this code
NSString *text= #"text to share";
CustomActivityItemProvider *textToShare = [[CustomActivityItemProvider alloc]
initWithStandardText:text];
NSArray *activityItems = #[textToShare,self.attachedImage];
Use activityItems array in activity view controller.
Posted the same question on Apple Dev Forums: https://devforums.apple.com/message/937697#937697
Got this answer:
Currently not possible. AirDrop only lets you send sets of single
items. If you are trying to send it to an instance of your own app on
the other side, you could instead create a fileformat (a
bundle/package would probably be suitable here) and embed all the
different types with the file. Then on the receiving side you can
extract the different types out of the file.

Provide different content to different services within a single UIActivityViewController

I'd like to provide different content to the different services in a UIActivityIndicatorView. For example, an HTML string for email, standard string for Facebook/Twitter, and an image for Copy. All of this happens within a single popover window.
I don't think this is possible. As I was playing around with all of the involved classes, I notices that the services that appear in the activity view change as the content type I provided it changed. In other words, when I provided a string, set A of services appeared. When I provided an image, set B of services appeared.
Next I tried adding both string and image thinking that possibly it would provide different content, however this just adds both the string and image to the services (for example an email is created with a string, then the image below).
Here is how I am providing string values (which are html links):
-(void)shareButtonTouchUpInside:(SMActionToolbarViewController*)sender{
// Reposition anchor view for UIPopoverController to point at
[self repositionAnchorViewToButtonFrame:self.actionToolbarViewController.shareButtonFrame];
// Asynch download of image
[SMUtility downloadAsset:self.selectedAsset completion:^(UIImage *image) {
// Create image source
SMActivitySource *activityImageSource = [[SMActivitySource alloc]initWithImage:image];
// Create string source
NSString *assetsString = [SMUtility assetsString:[NSArray arrayWithObject:self.selectedAsset]];
SMActivitySource *activityStringSource = [[SMActivitySource alloc]initWithString:assetsString];
// Present UIActiviyViewController within an UIPopoverController
NSArray *items = [#[activityImageSource, activityStringSource]mutableCopy];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc]initWithActivityItems:items applicationActivities:nil];
[activityViewController setCompletionHandler:^(NSString *activityType, BOOL completed){
// TODO: Populate mixpanel data
[SMMixPanel eventSharePhotoMethod:#"Unknown"];
}];
self.buttonPopoverController = [[UIPopoverController alloc] initWithContentViewController:activityViewController];
[self.buttonPopoverController presentPopoverFromRect:self.anchorView.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}];
}
You should subclass UIActivityItemProvider or create objects that conform to UIActivityItemSource. Pass in an array of those (one for each thing you want to share), and have some of them return nil depending on the chosen activity in the activityViewController:itemForActivityType: call.
This Question has been asked time and time again, the only way to fix it is to make your own UIActivity, see apple documentation on how to do that. Here is a link: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIActivity_Class/Reference/Reference.html

Certain UIActivityViewController services missing from my app

I have implemented UIActivityViewController within my app and can successfully share both strings and images. However, I notice that when you share an image within the iOS Photos app, there are some services that do not appear in my app. Namely Print, Use as Wallpaper, and Assign To Contact, and Photo Stream. My app is able to use Mail, Message, Facebook, Twitter, and Copy just fine.
I am thinking that either:
1.) These extra services have been implemented as custom services within the Photos app using UIActivityItemProvider, UIActivityItemSource, etc..
2.) The data that I am providing is not in the correct format to be used with these services.
I have read through the documentation a few times, but don't seem to see anything about it.
Edit: Showing code as requested:
#define SM_SHARE_IMAGE_AND_STRING 1
-(void)actionToolbarViewControllerUserTappedShareButton:(SMActionToolbarViewController*)sender{
// Reposition anchor view for UIPopoverController to point at
[self repositionAnchorViewToButtonFrame:self.actionToolbarViewController.shareButtonFrame];
// Asynch download of image
[SMUtility downloadAsset:self.selectedAsset completion:^(UIImage *image) {
// Create image source
SMActivitySource *activityImageSource = [[SMActivitySource alloc]initWithImage:image];
#if defined(SM_SHARE_IMAGE_AND_STRING)
// Create string source
NSString *assetsString = [SMUtility assetsString:[NSArray arrayWithObject:self.selectedAsset]];
SMActivitySource *activityStringSource = [[SMActivitySource alloc]initWithString:assetsString];
// Present UIActiviyViewController within an UIPopoverController
NSArray *items = [#[activityImageSource, activityStringSource]mutableCopy];
#else
NSArray *items = [#[activityImageSource]mutableCopy];
#endif
UIActivityViewController *activityViewController = [[UIActivityViewController alloc]initWithActivityItems:items applicationActivities:nil];
[activityViewController setCompletionHandler:^(NSString *activityType, BOOL completed){
[SMMixPanel eventSharePhotoMethod:#"Share"];
}];
self.buttonPopoverController = [[UIPopoverController alloc] initWithContentViewController:activityViewController];
[self.buttonPopoverController presentPopoverFromRect:self.anchorView.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}];
}
The Print, and Assign To Contact activities are standard activities shown by the UIActivityViewController as long as you provide the proper data.
You must provide a UIImage for the Assign To Contact activity. See the docs for UIActivityTypeAssignToContact. See the docs for UIActivityTypePrint for details on what it accepts.
The "Use As Wallpaper" seems to be a custom activity shown only in the Photos app.

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