My application required to post an image to Instagram, I used UIDocumentInteractionController to open image file saved in the Documents directory with an extension .igo. Set com.instagram.exclusivegram as the UIDocumentInteractionController's UTI property. That all worked fine, my problem is that when I use
[dic presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
to open the UIDocumentInteractionController, it shows PDF reader, DropBox etc. I have to hide the other options than Instagram or show Instagram only. And also how to identify the Cancel button press in the presented menu.
Why is my UIDocumentInteractionController showing other options?
If you're using some code snippet from the Internet, make sure you implemented the delegate method correctly.
-(UIDocumentInteractionController *)setupControllerWithURL:(NSURL *)fileURL
usingDelegate:(id<UIDocumentInteractionControllerDelegate>) interactionDelegate
{
// if you're creating a new instance here,
// make sure you set the properties correctly
UIDocumentInteractionController *interactionController = [UIDocumentInteractionController interactionControllerWithURL:fileURL];
// remember to set it again here
interactionController.UTI = #"com.instagram.exclusivegram";
interactionController.delegate = interactionDelegate;
return interactionController;
}
How can I know if a user cancel the action or proceed to Instagram?
Please refer to the answer of this thread: UIDocumentInteractionController Open Menu Cancelled Callback.
Related
I use this piece of code, but it shows other apps.
NSURL *URL = [[NSBundle mainBundle] URLForResource:#"ABC" withExtension:#"png"];
if (URL)
{
self.documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:URL];
[self.documentInteractionController setDelegate:self];
CGRect rect = self.view.frame;
[self.documentInteractionController presentOpenInMenuFromRect:rect inView:self.view animated:YES];
How can I show the WhatsApp icon only?
Here are the WhatsApp developer docs: https://www.whatsapp.com/faq/iphone/23559013
Here is the relevant bit:
Alternatively, if you want to show only WhatsApp in the application
list (instead of WhatsApp plus any other public/*-conforming apps) you
can specify a file of one of aforementioned types saved with the
extension that is exclusive to WhatsApp:
images - «.wai» which is of type net.whatsapp.image
videos - «.wam» which is of type net.whatsapp.movie
audio files - «.waa» which is of type net.whatsapp.audio
So in order to share an image you would set the UTI of your UIDocumentInteractionController to net.whatsapp.image and append the extension .wai to your filepath.
Additionally, this question may have some helpful example code.
Heres the UIDocuemtnInteractionController from my application(does not show mail option)
Here the one that Apples sample project uses
Here are the respective codes
My application
docInteractionController = [UIDocumentInteractionController interactionControllerWithURL:fileURL];
[docInteractionController presentOpenInMenuFromBarButtonItem:(UIBarButtonItem*)sender animated:YES];
Apple Sample Project
NSURL *fileURL;
if (cellIndexPath.section == 0)
{
// for section 0, we preview the docs built into our app
fileURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:documents[cellIndexPath.row] ofType:nil]];
}
else
{
// for secton 1, we preview the docs found in the Documents folder
fileURL = [self.documentURLs objectAtIndex:cellIndexPath.row];
}
self.docInteractionController.URL = fileURL;
[self.docInteractionController presentOptionsMenuFromRect:longPressGesture.view.frame
inView:longPressGesture.view
animated:YES];
WHAT SHOULD I DO TO GET THE MAIL OPTION?
To provide the Mail option, -presentOpenInMenuFromBarButtonItem: needs to be -presentOptionsMenuFromRect:
As per the Apple Docs on UIDocumentInteractionController
For -presentOpenInMenuFromBarButtonItem:animated: it says:
This method is similar to the
presentOptionsMenuFromBarButtonItem:animated: method, but presents a
menu restricted to a list of apps capable of opening the current
document. This determination is made based on the document type (as
indicated by the UTI property) and on the document types supported by
the installed apps.
...
If there are no registered apps that support opening the document, the
document interaction controller does not display a menu.
So:
To present options to open the file, use -presentOpenInMenuFromBarButtonItem:
To present all possible options applicable on the file, use -presentOptionsMenuFromBarButtonItem: or the generic -presentOptionsMenuFromRect:
Also... for any file, it would be better to specify the UTI type:
Example:
docInteractionController = [UIDocumentInteractionController interactionControllerWithURL:fileURL];
//[docInteractionController setDelegate:self];
[docInteractionController setUTI:#"public.data"];
[docInteractionController presentOptionsMenuFromBarButtonItem:(UIBarButtonItem*)sender
animated:YES];
//or a generic method
//[docInteractionController presentOptionsMenuFromRect:sender.frame
// animated:YES];
I'm sharing a PDF to other apps through the UIDocumentInteractionController. Prior to adding this functionality, I had a custom 'send to email' button using the MFMailComposeViewController - yet now there's also a Mail button in my UIDocumentInteractionController, which I'd like to make use of, to avoid having duplicate buttons.
My issue is, through the old mail controller, I used to set a subject, and content text, whereas if I use the UIDocumentInteractionController - I only get a blank email with the PDF attachment. Does anyone know a way I could work round this and get my custom subject and content when using the UIDocumentInteractionController?
I couldn't find anything obvious in the documentation, and clearly I can't meddle with the Mail app to make it communicate with my app - but wondered if anyone else had encountered the problem, and sussed out a 'back-door' solution.
Below is the code for how I'm currently creating and initalising my UIDocumentInteractionController:
-(void)openDocumentIn:(NSString*)filepath
{
//NSString * filePath = [[NSBundle mainBundle]
pathForResource:filePath ofType:#"pdf"];
documentController = [UIDocumentInteractionController
interactionControllerWithURL:[NSURL fileURLWithPath:filepath]];
documentController.delegate = self;
documentController.UTI = #"com.adobe.pdf";
[documentController presentOptionsMenuFromBarButtonItem:
[self.imageViewController exportQuote] animated:YES];
}
You can do this through the following code
[self.documentInteractionController setName:#"My Email Subject"];
I'm putting a UIDocumentInteractionController into my app, which can download arbitrary file types from a server.
It's there for two purposes:
To allow the user to 'Open In' the file in another app that may be able to view the file.
To preview files that the built-in UIDocumentInteractionController is able to preview.
What I'd like to so is to only attempt to display the preview for file types that the system is able to preview. For example, if it's a zip file, the system can't preview that so I want to go straight to the 'Open In'.
I can't find anywhere a list of the types that are supported for preview.
Here's my code:
self.docController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:path]];
[self.docController setDelegate:self];
// I'd like to skip this line if the system can't preview the file.
BOOL isOpen = [self.docController presentPreviewAnimated:YES];
if (!isOpen) {
BOOL canOpen = [self.docController presentOpenInMenuFromRect:CGRectMake(300, 300, 100, 100)
inView:self.view
animated:NO];
if (!canOpen) {
// tell user to install an app that's able to open this file.
return;
}
}
The method presentPreviewAnimated: returns a BOOL value (YES if it manages to preview and NO for not managing) so you can:
if (![self.docController presentPreviewAnimated:YES])
{
//present openIn
}
I have a test PDF file that I want to open in iBooks through my app. I saved it in my temp directory and I use this code to load it to iBooks:
NSURL *targetURL = [NSURL fileURLWithPath:tempFullPath];
NSLog(#"Path is %#", tempFullPath);
UIDocumentInteractionController *controller = [UIDocumentInteractionController interactionControllerWithURL:targetURL];
controller.delegate = self;
controller.UTI = #"com.adobe.pdf";
[controller presentOpenInMenuFromRect:self.view.bounds inView:self.view animated:YES];
The menu pops up just fine but when I tap the iBooks button the app crashes and hangs my Xcode.
The path to the file I get in my NSLog output is like this:
Path is /private/var/mobile/Applications/65EC4182-A79B-431C-9E74-BD72D91A31AB/tmp/TestFile.pdf
What am I doing wrong? Thanks in advance!
The use of a UIDocumentInteractionController requires that you keep a reference around until it is complete. This means you should use an instance variable, not a local variable. Implement the proper delegate methods so you can reset the ivar when you are done with the controller.
Enabling zombies will help debug such an issue. Most likely you will see that a message is being sent to a deallocated object (your controller).