objective-c - 屏幕适配的问题

Question

公司很老的项目了,因为导入了@3x的启动图片,所以整个项目变成了这个样子

把项目看了很久 ,不明白为什么屏幕的尺寸固定在了320 * 480 上,求大家帮忙解答一下

我目前想给整个项目适配,为什么屏幕只局限于320 * 480 呢?

Answer 1

It should be that xib chose a fixed 3.5-inch screen, you can check it

Answer 2

I guess min-width and max-width are set

Answer 3

The meta tag has fixed width written in it!
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">