Android 4.4.2中 Google API (x86系统图像)和 Google API (ARM 系统图像)的区别

我正在跟踪这个(http://developer.android.com/google/play-services/setup.html#Install)。它要求我为 Android API 17(或更高版本)安装 Google API，但当我打开 SDK Manager 时，它看起来是这样的:

SDK Manager

因此，我的问题是: 这两个 Google API 是什么? 它们之间的区别是什么？

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最佳答案

In the beginning the only Android system images available ran on the ARM instruction set. A system image is used to create different Android Virtual Devices (AVDs) and emulate the different Android devices in common use.

As developer workstations are usually Intel x86 based, the ARM instruction set had to be emulated as well. This resulted in poor performance from the AVDs due mainly to the amount of translation the x86 processor was doing to also emulate the ARM instruction set.

At Android 4.0.3 (API 15) Intel provided their own x86 based Android system image. This could then be used to create AVDs that did not need to do ARM translation. Combined with the Intel Hardware Accelerated Execution Manager (HAXM) the x86 AVMs were up to 10 times faster than the equivalent ARM emulators.

Support for Google specific Android APIs like the Android Google maps API, are not provided with the standard Android system images. They need to be installed separately using the Android SDK Manager. To use these APIs with an x86 system image you need to also install the Google APIs (x86 System Image) for the same API level.


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