I recently started to create an iOS version of my Android app and I've found myself struggling to find a method of extracting dominant colours from an image.
Over in Android there's a palette library provided by Google that allows you to do just that. (https://developer.android.com/reference/android/support/v7/graphics/Palette.html)
I'm can't seem to find any libraries that will allow me to that in iOS however.
It seems my friend use this library: https://github.com/pixelogik/ColorCube
Take a tour, it seems that they do what you are expected.
Related
The user should be allowed to select an image from more than just their device.
Countless services provide this functionality, Slack is a great example. Is there a library that can assist in this as my searching has turned up blank.
I really don't mind if it's in Objective C or Swift.
In answer to your question, the library used to generate the action sheet included in the image you attached is a native iOS library / class called UIDocumentMenuViewController.
I have just started working on Tizen. I want to know is there any built in support or library for image manipulating like contrast,color,crop etc to develop native application in Tizen.
After Tizen 2.3 you can use Cairo for modify or manipulate image.
You can find many samples and snippets with google search easily.
It's easy to control contrast, color, crop etc with cairo.
Additionaly Cairo in Tizen provide some additional function and not support some functions.
check the following document.
https://developer.tizen.org/development/api-references/native-application?redirect=https://developer.tizen.org/dev-guide/2.4.0/org.tizen.native.mobile.apireference/group__OPENSRC__CAIRO__FRAMEWORK.html
And refer this document for using cairo with evas image object in tizen native app.
https://developer.tizen.org/development/api-guides/native-application/graphics/cairo?langredirect=1
I found some image include in iOS framework, How can I use this image in my program?
You could extract the images using https://github.com/0xced/UIKit-Artwork-Extractor.
Please note, however, that Apple might not like it if you use their images in your app.
For example, using the GameCenter icon on a custom view/control is prohibited.
If the image is just part of UIKit, it won't be such a big problem, I guess.
Hope this helps
No . That's not possible and legal
Because of we cannot use third party and default framework images it's based on the legal issue in AppStore. So better to use control and views. Don't alter default framework images.
I have no idea how to call these and so I'm having a hard time googling for it. I've seen these a several times in iOS and MacOS apps to think they might be an OS feature. I'm talking about the blue tags or groups in text field controls. See the images below.
That's an NSTokenField on Mac. On iOS there's no official implementation (file a request if you want one) so you'd have to go with a third-party implementation. If I remember correctly, the Three20 framework has one...
Googling found these iOS versions:
JSTokenField
TTMessageRecipientField (I think)
This helper class is SO much better... https://github.com/thermogl/TITokenFieldView
I'm working on a BlackBerry app which will be used in cafes and restaurants, and one of the features is QR code scanning
Is there any way to make the camera autofocus the QR code?
Searching, I found FocusControl, which looks like the one I'm looking for. Unfortunately, it's only available since OS 5.0.
I wonder how to achieve the same thing on OS 4.5, 4.6, and 4.7.
Any suggestions?
You can't.
In OSs prior to 4.5, you can launch the native camera app and listen for recently created image files (FileSystemJournalListener). This way, if the BB has autofocus, the image has more definition.
However, there's no way to do this for every BB. Unless you apply some image algorithm of your own after taking the image.