This has been an amazingly exasperating and non-transparent process.
So far, from this question I have figured out the different dimensions of launch images I needed and that I can safely not use launch xibs / storyboards if I already have the launch images, and from various posts I have determined that the naming convention (APPARENTLY??) should be Default@2x.png
for iPhone 4s, Default-568h@2x.png
for iPhone 5, Default-667h@2x.png
for iPhone 6, and Default-Portrait@3x.png
for iPhone 6+, although I have seen conflicting information on this so I'm not even sure....do I need ~iphone
appended to the names?
BUT THEN, I go to add them to xcode so I go to my images.xcassets thing and select "new launch image" and this chart thing appears that makes zero sense to me....it only has space for one landscape picture, "Retina HD 5.5", but not for the other landscapes....even though the project is supposed to be portrait-only anyway...and if this thing is keeping track of my images then what do I need the naming convention for? This is so confusing.