i'm trying to open an app in appstore from an UIAlertView When the otherButtonTitle. The problem is nothing is happening.
I've checked when the otherButton is pressed if this method is called and it is. The problem lies in the openURL i guess. the appId contain an name of an app without any whiteSpace like "youtube". How come the link is not opening? i've tried looking in other threads and this is the code that should open an app in appstore
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex: (NSInteger)buttonIndex
{
if (buttonIndex == 1)
{
NSString *appId = [[otherArray objectAtIndex:currentRow] objectForKey:#"link"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat: #"itms-apps://itunes.apple.com/app/%#?mt=8", appId]]];
}
}
You need to break it down into smaller steps and debug the steps.
First, is the didDismiss method being called.
Next, is the code inside the if statement being executed.
The easiest way to figure this out is to set a breakpoint on the code that assigns appID and then make sure your code breaks there.
After that line executes, make sure appId contains the string you expect it to.
Net, you should rewrite the last line into steps that first create the URL, THEN call openURL. Step through the code that creates the URL to make sure it is being created correctly.
You might want to copy the URL string and paste it into a browser to see if it works from there.
Related
Posting after finding answer
After "rubber duck debugging" this answer a bunch, I finally came across the correct answer on a question that appears to me to be unrelated. I think this question (and its answer) are still relevant, so I'm posting the question and will post my own answer to hopefully help others like me.
I am creating a PDF in my iOS app that I would like to allow the user to export. For the purposes of this testing, I'm trying to save it to my personal Dropbox on a physical device.
I have turned on iTunes file sharing, and I can verify that the PDF file is being generated correctly, and when I copy it off of my device (iPad Pro Gen. 2 running iOS 11), I can open the PDF and it has the expected content and appearance.
I am able to get the document pop-up to display correctly, and I have options to share via:
Line 1: AirDrop
Line 2: Message, Mail, Add to Notes, (Facebook) Messenger, etc.
Line 3: Copy, Print, Save to Files, Save to Dropbox, etc.
No matter what I try to select (Save to Dropbox is the one I want to solve, but the issue seems universal), it fails. Of note, when I click Save to Dropbox, I do see the Dropbox panel display, but there is immediately a modal over top of the Save to Dropbox modal that says, "An unknown error occurred."
I have tried to look around and see how to get more information about this error, but I'm stumped. I'm not sure if it's correlated, but I get this message in the console:
[AXRun-PID] Client requesting unsuspension of PID:813 Name:<redacted>
Trying to google that error has proved unfruitful.
Here's the code where I generate the PDF and show the menu:
#pragma mark • Sharing Methods
- (void)showShareMenu {
NSArray *bookList = [BookManager bookList];
NSURL *pdfUrl = [PdfGenerator generatePdfFromBooks:bookList];
UIDocumentInteractionController *vc = [[UIDocumentInteractionController alloc] init];
vc.name = #"Booklet.pdf";
vc.URL = pdfUrl;
vc.UTI = #"com.adobe.pdf";
[vc presentOptionsMenuFromBarButtonItem:self.navigationItem.leftBarButtonItem animated:YES];
}
I've tried using UIDocumentInteractionController *vc = [UIDocumentInteractionController interactionControllerWithURL:pdfUrl]; instead of the one above, but the results are the same.
I tried making self the delegate of vc and then tried to implement the following methods:
- (void)documentInteractionController:(UIDocumentInteractionController *)controller
willBeginSendingToApplication:(nullable NSString *)application;
- (void)documentInteractionController:(UIDocumentInteractionController *)controller
didEndSendingToApplication:(nullable NSString *)application;
Neither of those methods ever fired.
Interestingly, though I think I've supplied the file name correctly based on what I've read, the name in the File textbook in the Save to Dropbox modal is a current timestamp (e.g., File Oct 28, 11 12 22 PM). The Dropbox modal stays up until I click "OK" on the "An unknown error occurred" modal, and then disappears immediately.
It seems like I'm somehow not providing the right information, but I'm not sure how. It seems like there ought to be a delegate method to indicate an error to me, but I don't see anything like that in the docs. (It is late, and I have been looking at this for hours, including reading several related tutorials, so I could have missed something obvious.)
I came across this answer as an example question while asking this current question.
It doesn't really ask the same question I have, nor did that user have the same error outputs I did. But, the linked answer did work for me, too.
The problem I had in the code above was that I was not keeping the UIDocumentInteractionController around after I created it. Adding a private property fixed this issue. So, the following code now works:
#pragma mark • Sharing Methods
- (void)showShareMenu {
NSArray *bookList = [BookManager bookList];
NSURL *pdfUrl = [PdfGenerator generatePdfFromBooks:bookList];
self.docController = [UIDocumentInteractionController interactionControllerWithURL:pdfUrl];
self.docController.name = #"Booklet.pdf";
self.docController.UTI = #"com.adobe.pdf";
[self.docController presentOptionsMenuFromBarButtonItem:self.navigationItem.leftBarButtonItem animated:YES];
}
I would like to provide the ability for users to tap the Action button and up pops the usual share sheet, which should include other apps to the right of the Messages, Facebook, etc icons - applications that can work with .txt files, or just an NSString.
I am currently displaying a Share sheet via UIActivityViewController, which is working great but it does not include other apps in the list. From reading other SO questions I concluded it's only possible to get those other apps to appear if you use UIDocumentInteractionController instead. I looked into creating a .txt file in a temp directory to share that file (instead of just sharing an NSString), but only Mail (no Copy) shows up when I tap the Share button. [Do note that if I run it on a real device not the simulator more apps other than Mail will appear and AirDrop too.] When I tap Mail, the app crashes: Unable to get data for URL: The operation couldn’t be completed. (Cocoa error 260.) Something is wrong with the way I'm creating/retrieving the .txt file.
My questions are:
Why is my code resulting in a crash when attempting to share the .txt file?
How can I get the Copy option to appear in the same Share sheet as the one that includes other apps?
To summarize: I need a share sheet that includes: Copy, AirDrop, Messages, Mail, Facebook, Twitter, Pages, Dropbox, etc for a simple string of text. Thanks!
The following lines of code lie inside my IBAction share button tap function:
UIActivityViewController approach:
UIActivityViewController *activityView = [[UIActivityViewController alloc] initWithActivityItems:#[self.myUITextField.text] applicationActivities:nil];
[self presentViewController:activityView animated:YES completion:nil];
Result:
UIDocumentInteractionController approach:
NSString *fileName = [NSString stringWithFormat:#"%#mytextfile.txt", NSTemporaryDirectory()];
[self.myUITextField.text writeToFile:fileName
atomically:NO
encoding:NSStringEncodingConversionAllowLossy
error:nil];
NSURL *textFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:#"mytextfile.txt"]];
UIDocumentInteractionController *documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:textFileURL];
[documentInteractionController presentOptionsMenuFromBarButtonItem:sender animated:YES];
Result (will show more apps and AirDrop if I run on a real device):
Example of what I want to obtain - minus the 3 extra options at the bottom:
If I cannot obtain the above screenshot with a string (instead of a photo) for some reason, I am willing to implement it how Dropbox has done it. They added an Open In button at the bottom that presents a different sheet that only shows additional apps. Note that I would still need a Copy option on the original sheet.
Question 1: Why is my code resulting in a crash
Cocoa error 260 is an NSFileReadNoSuchFileError according to the Foundation Constants Reference document. Looking at your code, the only way how I can see that file creation might fail is if self.myUITextField is nil.
I suggest that you check this first. If the property is not nil, then check whether writeToFile:atomically:encoding:error: returns an error.
Question 2: How can I get the Copy option to appear
First, assign a delegate to the controller:
documentInteractionController.delegate = self;
Then implement the following two delegate methods:
- (BOOL) documentInteractionController:(UIDocumentInteractionController*)controller canPerformAction:(SEL)action
{
if (#selector(copy:) == action)
return YES;
else
return NO;
}
- (BOOL) documentInteractionController:(UIDocumentInteractionController*)controller performAction:(SEL)action
{
if (#selector(copy:) != action)
return NO;
// Perform the copy: action
return YES;
}
Both methods are marked deprecated since iOS 6, but they still seem to work in iOS 7. Unfortunately, I have no idea how to implement the copy: action without those two methods - and neither does Apple, or so it seems to me, since they do not offer a replacement, and the official Document Interaction Programming Topics for iOS document still happily refers to the methods without indication that they are deprecated.
Anyway, here's a simple but complete implementation of the second delegate method:
- (BOOL) documentInteractionController:(UIDocumentInteractionController*)controller performAction:(SEL)action
{
if (#selector(copy:) != action)
return NO;
NSStringEncoding usedEncoding;
NSError* error;
NSString* fileContent = [NSString stringWithContentsOfURL:controller.URL
usedEncoding:&usedEncoding
error:&error];
UIPasteboard* pasteboard = [UIPasteboard generalPasteboard];
[pasteboard setString:fileContent];
return YES;
}
I am taking an Android programming course at my University only I have been allowed by the teacher to do IOS but I have to implement the same projects. This project is to have two apps. The first app is a color picker from a previous assignment. The second app is to call the colorpicker and allow the user to choose a color and when done return it too the second app to be displayed.
I have defined a custom URL scheme in my ColorPicker which works fine. In my second app I have a changeColor button that has the following IBAction method.
- (IBAction)colorChangePressed:(UIButton *)sender {
UIApplication *test = [ UIApplication sharedApplication ];
BOOL found =
[ test openURL:[ NSURL URLWithString:#"colorPicker://" ] ];
if (found) NSLog( #"Resource was found" );
else NSLog(#"unable to locate resource" );
}
This indeed launches the color picker app and it behaves as expected. My question is, after the color has been selected how do I return to the calling app with the selected color? I will add a finished button in my colorPicker to be clicked when the user is done selecting the color and I will capture the values I need but I can't figure out how to get this data back to the calling app. Is there some protocol/delegate pattern I need to implement?
The complete code is on git hub at. https://github.com/jnels124/CS390H
Thanks in advance for any insight as to how to solve my problem.
You need to have both apps with unique schemes. Encode the scheme of app1 and use it as a part of app1->app2 URL. When app2 is finished, you'll have a app2->app1 URL, use itto open app1 and send it required information (encoded).
It is similar as if you've put a String extra to app2 Intent with the name of app1 Intent, but instead of Intent you use URL and parse it as needed.
I defined a custom scheme in the other project as stated in the first answer but I was unsure how to generate the query string in the called URL and return it to the calling application to be parsed. I had this resolved in the following post.
Syntax for passing NSArray to other application with custom URL Scheme
I added MSTextView in my project. It is working fine in every manner except some of the links e.g. http://www.t-mobileadvantagedirect.com/L.aspx?d=Vb4UseqIl9QYojIAqfjNqw==. I am not having any idea of link regex. Please help me...I finished my whole app, only this issue is bothering me..
In line 190 of MSTextView.m, return the following instead:
return #"(\\bhttps?:\\/\\/[-A-Z0-9+&##\\/%?=~_|!:,.;]*[-A-Z0-9+&##\\/%=~_|])";
You also need to specify the NSRegularExpressionCaseInsensitive option when creating the NSRegularExpression object.
Also, be a good person, fork the repository, make the changes in your fork and submit a pull request to the original author.
Source of the regular expression: https://stackoverflow.com/a/8943487/350272
I've no idea with the MSTextView, but I can help you! I believe that you've all URLs like in question, and it's not showing up with the textview, right?
What you've to do is,
Show normal url inside your text with MSTextView, something like,
Check out my website, here's the link, http://www.t-mobileadvantagedirect.com
okay, now in, MSTextViewdelegate,
You've to check for the URL tapped,
- (void) handleURL:(NSURL*)url
{
if([url.absoluteString isEqualToString:#"http://www.t-mobileadvantagedirect.com"])
{
WebViewController *webview = [[WebViewController alloc] initWithURL:[NSURL urlWithString:#"http://www.t-mobileadvantagedirect.com/L.aspx?d=Vb4UseqIl9QYojIAqfjNqw=="]];
[self.navigationController pushViewController:webview animated:YES];
[webview release];
}
}
I know this isn't a solution if you've the same domain url for multiple paths!
Basically, what I want is a function that executes this function [self.navigationController popViewControllerAnimated:YES]; when a certain button is pressed and if you are on a Google page. But the function happens even if I am not on a Google page. Is there something I might be missing?
- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType
{
if(wasClicked)
{
if([[request.URL absoluteString] rangeOfString:#"google"].location!=NSNotFound)
{
[self.navigationController popViewControllerAnimated:YES];
}
}
return YES;
}
You should check within this method if button is clicked with UIWebViewNavigationTypeFormSubmitted or link is clicked UIWebViewNavigationTypeLinkClicked,
if (navigationType == UIWebViewNavigationTypeLinkClicked) {
}
you should at least read the documentation of the UIWebViewDelegate before posting the question for every single step. I am writing this because in the previous question you asked about how it works, you got answer in other post and you copied the answer and pasted as a question here instead of trying it yourself.
If you're on a Google page, there's a strong likelihood that most links will initiate a load request for a URI that contains "google" somewhere in the string. I'm not sure of this, but I think even Google search results first load a Google URL for tracking before redirecting to the actual page clicked.
Try adding NSLog(#"URL: %#", [request.URL absoluteString]); to your function and see why that statement is evaluating to YES.