xcode11废弃了 asset里的 Launch Images Source 所以这种配置启动页的方法就不能用了。苹果强制要求使用Launch Screen.storyboard来适配启动页。
1.创建Launch Screen.storyboard
创建后里面添加一张全屏图片
2.给asset里添加一张图片，然后show in finder 把Contents.json 的东西替换成
{
"images" : [
{
"idiom" : "iphone",
"scale" : "1x"
},
{
"idiom" : "iphone",
"scale" : "2x"
},
{
"idiom" : "iphone",
"scale" : "3x"
},
{
"idiom" : "iphone",
"filename" : "640.png",
"subtype" : "retina4",
"scale" : "1x"
},
{
"idiom" : "iphone",
"filename" : "640_960.png",
"subtype" : "retina4",
"scale" : "2x"
},
{
"idiom" : "iphone",
"subtype" : "retina4",
"scale" : "3x"
},
{
"idiom" : "iphone",
"filename" : "1242.png",
"subtype" : "736h",
"scale" : "3x"
},
{
"idiom" : "iphone",
"filename" : "750.png",
"subtype" : "667h",
"scale" : "2x"
},
{
"idiom" : "iphone",
"filename" : "1125_2436.png",
"subtype" : "2436h",
"scale" : "3x"
},
{
"idiom" : "iphone",
"filename" : "1242_2688.png",
"subtype" : "2688h",
"scale" : "3x"
},
{
"idiom" : "iphone",
"filename" : "828_1792.png",
"subtype" : "1792h",
"scale" : "2x"
}
],
"info" : {
"version" : 1,
"author" : "xcode"
}
}
3.把相应的图片添加上。如
4.GeneRal -> Launch Screen File 选择创建的Launch Screen StoryBoad
5.在 targets中 buildsetting下 删除 Launch screen interface file base name 里的东西（双击 删除）。
6.删掉APP，重新运行 就可以了。
最后附一个 iphone12 机型对照 传送门 https://www.jianshu.com/p/0954bc320b1d
