iOS设备和模拟器的构建实际上有何不同？ [英] How does building for iOS device and simulator actually differ?

问题描述

由于iOS模拟器是模拟器，为什么我需要专门为它构建？在某种VM /沙箱中运行真实代码的模拟器不是重点吗？

Since the iOS simulator is a simulator, why do I need to build specifically for it? Isn't the point of a simulator that it runs the real code in some sort of VM/sandbox?

那么实际差异是什么如何构建设备/模拟器，以及生成的应用程序如何不同？

So what are the actual differences in how building for device/simulator works, and how the resultant built apps differ?

推荐答案

在iOS设备上本机运行的应用程序是ARM程序。
但是，在iOS模拟器中运行的应用程序是一个普通的
32位（i386架构）Mac OS X程序。换句话说，
模拟器不会将iOS设备模拟到硬件级别。
它提供了iOS环境的忠实副本，重新实现为在Mac上本机运行的
。

An application running natively on an iOS device is an ARM program. However, an application running in the iOS Simulator is an ordinary 32-bit (i386 architecture) Mac OS X program. In other words, the Simulator doesn’t simulate an iOS device down to the hardware level. It provides a faithful copy of the iOS environment, reimplemented to run natively on the Mac.

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