Should the Cover image be .jpg?

[masarapmabuhay]

I used .png instead of .jpg for the Cover image. It seems to produce a Warning when I RUN the app.

[chrisamanse]

Should the Cover image be .jpg?

No.

However, if you simply replaced it in the Finder in LIKHA/Assets.xcassets/Cover.imageset AND with a different filename (cover.jpg -> cover.png), then it won't work.

• It will only work if it has the same filename, cover.jpg (simply renaming the file from .png to .jpg may not work since Xcode will try to read the PNG file as a JPG format, which is different).

The reasoning behind this is that the filename is hardcoded in LIKHA/Assets.xcassets/Cover.imageset/Contents.json, which is automatically managed by Xcode. This is the current contents of Contents.json:

{
  "images" : [
    {
      "idiom" : "universal",
      "filename" : "cover.jpg",
      "scale" : "1x"
    },
    {
      "idiom" : "universal",
      "scale" : "2x"
    },
    {
      "idiom" : "universal",
      "scale" : "3x"
    }
  ],
  "info" : {
    "version" : 1,
    "author" : "xcode"
  }
}

With this, if you manually replaced the image in the Finder in LIKHA/Assets.xcassets/Cover.imageset with a different filename, then you also have to update the value of "filename" in Contents.json. Alternatively, if you don't want to manually edit Contents.json, you can go to Xcode and Assets.xcassets -> Cover, you'll see your new image with its filename and a title "unassigned". Simply drag this unassigned image to the Universal 1x slot, then Xcode will update Contents.json automatically.

To avoid doing this, you must drag-and-drop the new image in Assests.xcassets -> Cover in Xcode. Normally, developers don't manually edit files inside Assets.xcassets, and only let Xcode handle the files inside it.

[masarapmabuhay]

D'accord. I can see that Contents.json is also present in the AppIcons folder. I was under the impression that there was only 1 Contents.json.

Merci bien!