I literally tried for two weeks to get an icon to expand the action, but absolutely nothing works.
I have seen past questions such as the size of the iOS 8 extension icon icons , and this is why my iOS8 Extension Application Extension icon appears? but they are useless.
I created an Xcode template project to try every combination of the things mentioned in other questions, but to no avail.
1) The first thing that was mentioned is that the extension of the action should have its own catalog of assets, normal, here it is:
2) Secondly, it should contain a set of images of application icons, this is what:
3) Thirdly, people say that they needed to add their targeted membership to the extension and to the application. Here it is too (in all these things I tried options like membership as just an extension, just an application, both)
4) Fourth, people mention that they had to add it to the compilation sources, like this, and also copy it to the package resources:
5) Some say that it also needs to be copied to the application package for containers, that’s what, and for good measure, it was also added as a compilation resource:
6). One person says that you need to add container application assets to the expansion pack, I don’t see how it will work, because the icons in the container application are colored and do not meet the requirements of the extension icons, but what the hell can try everything right, and for now we are on it, let's add resources everywhere:
7) The asset icon is very important, color icons are not displayed, but I tried anyway. A simple black and white image is described as white parts that look gray, but I tried it anyway. Trying unsupported icons was just despair and experimenting, of course, I actually use the icon with a transparent background. When placed here, it appears on this web page, like all white but not black parts are actually completely transparent and have alpha 0:
But, despite the many combinations of all the above steps, it looks like on the device:
This uses iOS 10.n, the latest 10.7 (it did not work with any beta version) and Xcode 8.6. If I download an application from the application store that uses action extensions, then their icons appear, so there are no problems with 10 beta versions. The problem is either creating the application using Xcode beta, or in some step that I skipped - if so, then what?