I am looking for way to receive opened file's URL from Finder of macOS.
I implemented ZIP document type association into info.plist of an Mac-Catalyst app. So If user once associated ZIP file to my app for default app, user can double click ZIP file and launch my app.
But currently my app can't receive that opened file URL because I don't know which place/delegate function is good to receive that URL.
I believe I should implement that delegate function in SceneDelegate or AppDelegate, and I should also implement launch first viewcontroller with Storyboard manually.
This app window launching chain (that is from file double-click, to end of call viewcontroller) is very difficult for me.
Is there any help document or sample code?
Thank you.
Related
ERROR ITMS-90475: "Invalid Bundle. Your app supports Multitasking on iPad, so you must include the UILaunchStoryboardName key in your bundle, 'com.Thunder-Flare.Expenses’. Learn more (https://developer.apple.com/library/content/documentation/General/Reference/InfoPlistKeyReference/Articles/iPhoneOSKeys.html#//apple_ref/doc/uid/TP40009252-SW40)."
This application was made with SwiftUI interface and SwiftUI lifecycle
Click on new file and Launch Screen. Then get rid of the existing launch screen details on the plist file and add Launch screen interface file name, in string area add the file name.
Then design your storyboard however you like!
I am building an app for Mac which logs into a website based on login and password collected from textfield and secure text field, then app opens an url which is created in my app based on date range selection with use of two date picker cell calendars. Next app displays html data in webWiev (using WKWebView), converts html to string using extension NSAttributedString and then saves retrieved data as txt file. Everything works as expected as long as app is run from Xcode "play" button. Problem is if I archive this app and launch it, it will bring up an empty window without any button, calendar or textfield. There are no errors, no crash logs on organizer, nothing.
I decided to perform a little test. I build another view controller with only one button which upon clicking will show my app main view controller. After archiving this modified app and running it outside of Xcode a window shows view controller with one button which is correct. But after clicking it nothing happens. App works great if running "inside" Xcode, a pushbutton shows main ViewController correctly. Do You have any clue what can be wrong? thank You!
Edit 1. So I found a discussion on apple which mention this problem. It is associated with IB WKWebView and problem is already known since some time. Now I have to get around the problem. Apple forum link: https://forums.developer.apple.com/thread/116047
Did you embed WebKit.framework to your app?
After comment that I wrote, I founded a solution and solved with this method.
Please check it out.
I want to make "Open in.." function in my iOS application.
Is there any way to check if any app on this device is associated with file extension that i want to share?
If there are no apps on current device to open file with such an extension than UIDocumentInteractionController will not be displayed after clicking on "Open in.." button, but i want not to show this button in such case.
So the question is: how to check if any app on device can open some file with specific extension?
Update:
For example UIDocumentInteractionController has NSArray property icons.
It contains images of all aplications that can open the file with my extension. But if there are no applications it contans image of empty application.
So i can't check it using docInteractionController.icons.count == 0 for example. I am looking for other tricks.'
Thanks, in advance.
Although UIDocumentInteractionController does not offer a way to discover in advance whether there are any applications that can handle a document, -presentOpenInMenuFromRect: will return a flag indicating whether there were any applications that could open a document. This requires you to have already set up and presented the controller, which is not optimal.
There is a workaround for this, a little hacky but is functional: Before you invoke the "real" interaction controller, create a dummy one using a dummy document, and present it from the rect of the window's bounds. This guarantees that it will "appear" offscreen, so your user won't see it. At that point, you have the flag returned from -present, and you can immediately dismiss the dummy controller, and the proceed to show your UI appropriately.
On OSX, you can get a list of application bundle identifiers capable of handling a specific content type using LSCopyAllRoleHandlersForContentType. But on iOS, I don't think there is such a way.
If I find, I'll edit my answer.
Considering you are looking for other tricks, you can check if that one image in the icons array is the generic document icon.
If it is then you know that there is no app associated to handle that file type. But this approach will be OS version dependent as generic file icon may change.
From the official documentation:
To declare its support for file types, your app must include the
CFBundleDocumentTypes key in its Info.plistproperty list file. (See
“Core Foundation Keys”.) The system adds this information to a
registry that other apps can access through a document interaction
controller.
To me this indicates that the registry can only be accessed through UIDocumentInteractionController and so no, you would not be able to know in advance if there are any available apps for the file format (which would be totally in line with Apple's philosophy of not letting apps interact directly with each other).
UPDATE:
as you said the icons property contains an image even with no applications present. I checked and all the other methods and properties of the controller do not give an hint about the apps that may open the current file format.
You said in case that no app can open the specified file format there is an "image of empty application". Maybe you can extract that icon and when the array icons only has one image check if the extracted image and the icon are the same?
I am trying to create MAC application.
My input is --> Source Code Folder of an existing iPhone Application.
Using my application I want to insert an extra screen in the existing application. The extra screen will be always the first screen.
Since I want to Automate this, I have written a MAC application which browses through the Source code folder and replaces the first screen of app with my extra screen. This is working perfectly for Single View Application where I get the AppDelegate class name from the main.m file ( by parsing UIApplicationMain(argc,argv,MyAppDelegate,nil) ) line.
The application fails when the third argument is 'nil' in some of the applications (which may depend on the implementer or type of project).
Is it possible to make my application generic for all kind of applications?
Regards,
Nirav
Looks like you would only have to search (recursively) the folder for all .h files, and then detect the name of the class that implements UIApplicationDelegate. There should not usually have more than one, and would work with the defaults templates I guess.
I did a cocoa application in which the file dialog box is opening when a button is tapped with the use of NSOpenPanel controller in cocoa applications.For ipad applications we are using UISplitViewController.
I want to know that for developing the applications in iphone,what controller to be used for opening a file dialog box when a button is tapped.
For example in composing a mail.In composing a mail,if we want to attach any files from the local drive,we click the "Attach a File" button. Then it will opens a file open dialog box for selection of file what we want.
Can any one help me or suggest me what controller to be used for opening a file in iphone applications?For opening a file dialog box ,in
cocoa applications --------- Controller used is NSOpenPanel
ipad applications --------- Controller used is UISplitViewController
Like wise for i phone applications ------- ??????
Please help me out of this?
iOS doesn't have a concept of browsing arbitrary local files.
It does have the ability to browse for images from the photo library — for that you can use UIImagePickerController.
Other than photos, the only files you can even open are ones that are inside your own sandbox folder (i.e. ones that you've put there yourself). There isn't a built in view controller that will display them — you'd have to write your own that will read the list of files using something like NSFileManager contentsOfDirectoryAtPath:error:, and display them in an appropriate UI.