Category: iOS

Fastlane Frameit Tips

Published May 5, 2016 by doug

Here are few tips I learned when setting up Fastlane Frameit.

When I first ran fame it, I got this error:

$ frameit white

iconv: /Users/doug/src/my-ios-project/fastlane/screenshots/en-US/title.strings:1:252: incomplete character or shift sequence
[16:37:51]: Could not get title for screenshot ./iPhone6-0.png. Please provide one in your Framefile.json

iconv: /Users/doug/src/my-ios-project/fastlane/screenshots/en-US/title.strings:1:252: incomplete character or shift sequence
[16:37:52]: Could not get title for screenshot ./iPhone6-1.png. Please provide one in your Framefile.json

iconv: /Users/doug/src/my-ios-project/fastlane/screenshots/en-US/title.strings:1:252: incomplete character or shift sequence
[16:37:53]: Could not get title for screenshot ./iPhone6-2.png. Please provide one in your Framefile.json
ç
iconv: /Users/doug/src/my-ios-project/fastlane/screenshots/en-US/title.strings:1:252: incomplete character or shift sequence
[16:37:55]: Could not get title for screenshot ./iPhone6-3.png. Please provide one in your Framefile.json
√
iconv: /Users/doug/src/my-ios-project/fastlane/screenshots/en-US/title.strings:1:252: incomplete character or shift sequence
[16:37:56]: Could not get title for screenshot ./iPhone6-4.png. Please provide one in your Framefile.json

As the documentation clear states: “.strings files MUST be utf-16 encoded (UTF-16 LE with BOM).”

I fixed this by saving the file ast UTF-16 in TextWrangler.
textwrangler_utf-16

Then I ran into a strange error:

$ frameit white
[16:42:10]: `mogrify -gravity Center -pointsize 55 -draw text 0,0 ‘Text 1′ -fill #000000 /var/folders/rf/yz3fgzq17sbgkjcxfq_x6lh40000gn/T/mini_magick20160324-45310-1yizv31.png` failed with error:
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: non-conforming drawing primitive definition `text’ @ error/draw.c/DrawImage/3165.

[16:42:12]: `mogrify -gravity Center -pointsize 55 -draw text 0,0 ‘Text 2′ -fill #000000 /var/folders/rf/yz3fgzq17sbgkjcxfq_x6lh40000gn/T/mini_magick20160324-45310-qp00up.png` failed with error:
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: non-conforming drawing primitive definition `text’ @ error/draw.c/DrawImage/3165.

[16:42:13]: `mogrify -gravity Center -pointsize 55 -draw text 0,0 ‘Text 3′ -fill #000000 /var/folders/rf/yz3fgzq17sbgkjcxfq_x6lh40000gn/T/mini_magick20160324-45310-eu9yaq.png` failed with error:
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: non-conforming drawing primitive definition `text’ @ error/draw.c/DrawImage/3165.

[16:42:15]: `mogrify -gravity Center -pointsize 55 -draw text 0,0 ‘Text 4′ -fill #000000 /var/folders/rf/yz3fgzq17sbgkjcxfq_x6lh40000gn/T/mini_magick20160324-45310-1ie72eo.png` failed with error:
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: non-conforming drawing primitive definition `text’ @ error/draw.c/DrawImage/3165.

[16:42:16]: `mogrify -gravity Center -pointsize 55 -draw text 0,0 ‘Text 5′ -fill #000000 /var/folders/rf/yz3fgzq17sbgkjcxfq_x6lh40000gn/T/mini_magick20160324-45310-ji9gyl.png` failed with error:
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: unable to read font `(null)’ @ error/annotate.c/RenderFreetype/1153.
mogrify: non-conforming drawing primitive definition `text’ @ error/draw.c/DrawImage/3165.

I came across a forum thread that said I needed to install ghostscript. So I installed Ghostscript with Homebrew like:

$ brew install gs
==> Installing dependencies for ghostscript: libtiff, little-cms2
==> Installing ghostscript dependency: libtiff
==> Downloading https://homebrew.bintray.com/bottles/libtiff-4.0.6.el_capitan.bottle.tar.gz
######################################################################## 100.0%
==> Pouring libtiff-4.0.6.el_capitan.bottle.tar.gz
🍺 /usr/local/Cellar/libtiff/4.0.6: 259 files, 3.4M
==> Installing ghostscript dependency: little-cms2
==> Downloading https://homebrew.bintray.com/bottles/little-cms2-2.7.el_capitan.bottle.tar.gz
######################################################################## 100.0%
==> Pouring little-cms2-2.7.el_capitan.bottle.tar.gz
🍺 /usr/local/Cellar/little-cms2/2.7: 16 files, 1M
==> Installing ghostscript
==> Downloading https://homebrew.bintray.com/bottles/ghostscript-9.18.el_capitan.bottle.tar.gz
######################################################################## 100.0%
==> Pouring ghostscript-9.18.el_capitan.bottle.tar.gz
🍺 /usr/local/Cellar/ghostscript/9.18: 709 files, 61M

Then it ran successfully:

$ frameit white
[16:45:21]: Added frame: ‘/Users/doug/src/my-ios-project/fastlane/screenshots/en-US/iPhone6-0_framed.png’
[16:45:23]: Added frame: ‘/Users/doug/src/my-ios-project/fastlane/screenshots/en-US/iPhone6-1_framed.png’
[16:45:25]: Added frame: ‘/Users/doug/src/my-ios-project/fastlane/screenshots/en-US/iPhone6-2_framed.png’
[16:45:28]: Added frame: ‘/Users/doug/src/my-ios-project/fastlane/screenshots/en-US/iPhone6-3_framed.png’
[16:45:30]: Added frame: ‘/Users/doug/src/my-ios-project/fastlane/screenshots/en-US/iPhone6-4_framed.png’
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Managing where rows can be moved to in UITableView

Published March 5, 2016 by doug

In an app I was working on, I needed to prevent users from moving rows from section 1 to section 0. After reading the docs, I found Apple has just the API: Reordering Table Rows.

Here’s how I used the API. If the proposed destination section is 0, then return the current indexPath. As a result the user will be unable to draw a row from section 1 to section 0.


func tableView(tableView: UITableView, targetIndexPathForMoveFromRowAtIndexPath sourceIndexPath: NSIndexPath, toProposedIndexPath proposedDestinationIndexPath: NSIndexPath) -> NSIndexPath
{
    
    if proposedDestinationIndexPath.section == 0 {
        return sourceIndexPath
    }
    
    return proposedDestinationIndexPath;
}

My problem was simple, but this API could be used for all kinds of reordering problems.

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Xcode 7 crashing when toggling Assistant editor

Published February 25, 2016 by doug

I had a Xcode project which was crashing whenever I tried to close the Assistant editor. Here is what I did to fix it.

Close the project in XCode
Delete the following files using the Terminal. Where “myproject” is the name your project.

rm -rf myproject.xcworkspace/xcuserdata

rm -rf myproject.xcodeproj/xcuserdata

rm -rf myproject.xcodeproj/project.xcworkspace

If you don’t feel comfortable using the Terminal, you can also right click on the file and choose “Show Package Contents” and delete the files.

If you don’t use CocoaPods, you may not have a myproject.xcworkspace

This solution may fix other Xcode crashing issues.

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Migrate NSUserDefaults to App Groups – Swift

Published January 9, 2016 by doug

I needed migrate my NSUserDefaults to using App Groups. I came across this post Migrating to App Groups, which was doing exactly what I wanted in Objective-C. Here’s the version I rewrote in Swift:


func migrateUserDefaultsToAppGroups() {
	
	// User Defaults - Old
	let userDefaults = NSUserDefaults.standardUserDefaults()
	
	// App Groups Default - New
	let groupDefaults = NSUserDefaults(suiteName: "group.myGroup")
	
	// Key to track if we migrated
	let didMigrateToAppGroups = "DidMigrateToAppGroups"
	
	if let groupDefaults = groupDefaults {
		if !groupDefaults.boolForKey(didMigrateToAppGroups) {
			for key in userDefaults.dictionaryRepresentation().keys {
				groupDefaults.setObject(userDefaults.dictionaryRepresentation()[key], forKey: key)
			}
			groupDefaults.setBool(true, forKey: didMigrateToAppGroups)
			groupDefaults.synchronize()
			print("Successfully migrated defaults")
		} else {
			print("No need to migrate defaults")
		}
	} else {
		print("Unable to create NSUserDefaults with given app group")
	}
	
}

Gist

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Cocoapods – Generated duplicate UUIDs

Published November 10, 2015 by doug

I recently added another target to my Podfile to support tvOS. Here is an example of what the Podfile looks like:

source ‘https://github.com/CocoaPods/Specs.git’
use_frameworks!

target ‘AppiOS’ do
platform :ios, ‘9.0’
pod ‘AFNetworking’, ‘3.0.0-beta.1’
end

target ‘AppTV’ do
platform :tvos, ‘9.0’
pod ‘AFNetworking’, ‘3.0.0-beta.1’
end

I got this really long error complaining of duplicate UUIDS. Here is a shortened version:

[!] [Xcodeproj] Generated duplicate UUIDs:

PBXFileReference —
…. /Products/AFNetworking.framework

From what I understand, this deterministic UUIDs is a harmless warning and can be disabled by running the following command in the terminal. Then run pod install again.

$ export COCOAPODS_DISABLE_DETERMINISTIC_UUIDS=YES
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Downgrading Cocoapods

Published September 24, 2015 by doug

I recently had some issues with a pre-release version of Cocoapods. To fix it, the suggestion was to downgrade Cocoapods to a previous version. It wasn’t obvious how to do that, but this is what I learned.

First you can figure out which version of Cocoapods you are on with the command:

pod –version

You can also see all the version of Cocoapods you have installed with this command:

sudo gem list cocoapods

Next uninstall Cocoapods. If you have multiple version, you will have the choice of uninstalling all or a specific version.

sudo gem uninstall cocoapods

Finally you can install the specific version with this command:

sudo gem install cocoapods -v 0.39.0.beta.3
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WWDC 2015 – Wish list

Published June 4, 2015 by doug

Last year I made a WWDC 2014 Wish List. I got at least one thing I wanted. But Apple also gave me a whole bunch of things that I didn’t know I wanted.

Here is an updated list for WWDC 2015.

Bug Fixes – I’d be very happy if there were less new features and more bug fixes with the current products. For example please fix the networking issues. And I’m still having issues with Gmail in OS X Mail.
3rd Party Complications on Apple Watch – Complications are awesome. I’d like to be able to expose a complication from my app.
Complications on iOS Home Screen – Having complications on the Apple Watch, makes me want them on the iOS home screen.
Siri Extensibility – I’d like to see Apple open up Siri to third party apps. For example if I have RunKeeper on my iPhone, I’d like to be able to tell Siri “Start my run”, “End my run”. When Apple announced HomeKit in 2014, it allowed custom names for things in your house. A step forward, but I’d like to see more.
AppleTV SDK – I’d love to be able to write apps for the AppleTV.
Sandboxing – I’m glad that Apple has sandboxing in the Mac App Store. But it’s too restrictive. Apps like Coda should be able to run. Apple should start by sandboxing Xcode.
Filesystem – Mac OS X and iOS are due for a new filesystem. ZFS was rumored for awhile but fell through.
Extensions – I love extensions, but there are a few problems. The difference between a share and action extension is confusing. It’s hard to tell when new extension are available. There should be more trigger points for extensions.
Default Applications on iOS – On OS X you can set a default application for things like mail and web browser. I wish you could do the same on iOS.
Multiple profiles on iOS – It would be nice if iOS supported multiple users, so a family could share an iPad.

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iOS File Size Formatter

Published December 11, 2014 by doug

iOS has a handy formatter for file sizes. Here is an example of formatting at long into a readable string:

// Get file size
unsigned long long size = [[NSFileManager defaultManager]
attributesOfItemAtPath:path error:nil].fileSize;
NSLog(@"size: %@", @(size));

// Format file size to a readable string
NSString * fileSize = [NSByteCountFormatter stringFromByteCount:size
countStyle:NSByteCountFormatterCountStyleFile];
NSLog(@"fileSize: %@", fileSize);

Output:

size: 65346
fileSize: 65 KB

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UIDocumentInteractionController vs UIActivityViewController

Published November 26, 2014 by doug

When I first released WebPDF, I used an UIActivityViewController to share the PDF. This only gave me a few apps to share to. I expected to see other apps that supported PDFs. Here is the code I used:

UIActivityViewController *activityViewController =
[[UIActivityViewController alloc] initWithActivityItems:activityItems
applicationActivities:nil];
activityViewController.popoverPresentationController.barButtonItem = _shareButton;

[activityViewController setCompletionHandler:^(NSString *activityType, BOOL completed) {
[self dismissViewControllerAnimated:YES completion:nil];
}];

[self presentViewController:activityViewController
animated:YES
completion:nil];

Here is what the share sheet looked like:

After searching around I found the UIDocumentInteractionController. I updated my code:

NSString* fileName = [NSString stringWithFormat:@"%@.pdf",
[self.detailItem valueForKey:@"pdfFilename"]];
NSString* filePath = [WebPDFUtils pathWithFilename:fileName];
self.documentInteractionController = [UIDocumentInteractionController
interactionControllerWithURL:[NSURL fileURLWithPath:filePath]];
self.documentInteractionController.delegate = self;
self.documentInteractionController.UTI = @"com.adobe.pdf";
[self.documentInteractionController presentOptionsMenuFromBarButtonItem:sender
animated:YES];

Here is what the share sheet looked like:

When should you use a UIActivityViewController vs a UIDocumentInteractionController. You should really read the Developer docs:

UIActivityViewController

The UIActivityViewController class is a standard view controller that you can use to offer various services from your application. The system provides several standard services, such as copying items to the pasteboard, posting content to social media sites, sending items via email or SMS, and more. Apps can also define custom services.

UIDocumentInteractionController

A document interaction controller, along with a delegate object, provides in-app support for managing user interactions with files in the local system. For example, an email program might use this class to allow the user to preview attachments and open them in other apps. Use this class to present an appropriate user interface for previewing, opening, copying, or printing a specified file.

In general if you’re sharing an image or url, you might want to use a UIActivityViewController. If you’re sharing a document, you might want to use a UIDocumentInteractionController.

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WebPDF 1.1.0

Published November 23, 2014 by doug

WebPDF has been updated to include support for saving a PDF from Safari.

In Safari, choose the share icon. Then tap on WebPDF. The page is saved as a PDF to WebPDF.

Source is available on GitHUB: https://github.com/dougdiego/WebPDF

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