splash screen error with xcode 9.2

Question

I want to upload app to the store, but i'm facing this problem:

this is the images uploaded to LaunchImage :

and this is app general properties:

i have these warning:

: You're targeting iOS 8.0, but named colors can only be accessed from an Asset Catalog in iOS 11.0 and later.

and

 An iPhone Retina (4-inch) launch image for iOS 7.0 and later is required.

i don't know which additional sizes needed and how to add them, what should i do?

Answer 1

Use below size images 

Portrait
iPhone

3.5 Inch => 640 x 960  
4.0 Inch => 640 x 1136 
4.7 Inch => 750 x 1334
5.5 Inch => 1242 x 2208
5.8 Inch => 1125 x 2436

iPad

1536 x 2048


[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/eD6gh.png

Answer 2

Please follow below steps: 

1. Project Target settings remove Launch Screen File
2. Enable Launch Image Source with Assets.xcassets
3. Add LaunchImage set in Assets.xcassets and assign correct size images

For ex Portrait Sizes:


iPhone

3.5 Inch => 640 x 960  
4.0 Inch => 640 x 1136 
4.7 Inch => 750 x 1334
5.5 Inch => 1242 x 2208
5.8 Inch => 1125 x 2436

iPad

1536 x 2048

4. Project Target change Launch Image Source to LaunchImage

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/ukSHj.png