兩種方法設置：??
一 . LaunchScreen.storyboard??
在LaunchScreen.storyboard中拖拽imageView并設置約束踊餐，勾選右側(cè)Use?as?launch?Screen??
工程—General—App?Icons?and?Launch?Images選項中設置Launch?Screen?File為所制作的LaunchScreen.storyboard或者LaunchScreen.xib??
二 . Assets.xcassets??
設置LaunchImage??
各種尺寸啟動圖：640?×?960锅劝，640?×?1136，750?×?1334疫粥，1242?×?2208茬斧，1125?x?2436
iPhone?X?Portrait??iOS?11+?(3x:1125?x?2436?pixels) ?
iPhone?Portrait?iOS8+(Retina?HD?5.5”:1242?×?2208?pixels,?Retina?HD?4.7”:750?×?1334?pixels) ?
iPhone?Landscape?iOS?8+(Retina?HD?5.5”:2208?×?1242?pixels) ?
iPhone?Portrait?iOS7+(2x:640?×?960?pixels,?Retina?4:640?×?1136?pixels) ?
iPhone?Portrait?iOS5,6(1x:320?×?480?pixels,?2x:640?×?960?pixels,?Retina?4:640?×?1136?pixels)??
配置???
工程—General—App?Icons?and?Launch?Images選項中設置Launch?Image?Source?為LaunchImage??
取消勾選Use?as?Launch?Screen??
置空路徑Launch?Screen?File
