找到根本原因Info.plist 没有UILaunchStoryboardName也没有UILaunchScreen。iOS 判定这是旧版小屏 App强制加黑边适配。添加空的UILaunchScreen即可让系统以全屏模式运行图一是问题的图二是正常dict keyUIApplicationSceneManifest/key dict ... !-- 告诉 iOS 这是现代全屏 App -- keyUILaunchScreen/key dict keyUIColorName/key stringLaunchBackground/string /dict /dict