打开命令提示符，进入<android-Home>\sdk\tools>emulator -avd <AVD_NAME>

这里“emulator”是用来打开Android虚拟设备的命令。

我迟到了，在这里，但想要分享，所以它可能会帮助别人和我以后需要的时候:)， 下面是使用bash脚本从命令行打开模拟器的方法。 我使用MX Linux，但在所有操作系统上的过程是相同的

1-首先检查已安装的仿真器

emulator -list-avds

结果如下所示

emulator -list-avds
Nexus_4_API_28
Pixel_2_API_28

2-打开任何纯文本或代码编辑器，创建一个新文件，并如下所示

#!/bin/sh
emulator -avd Nexus_4_API_28

Nexus_4_API_28是模拟器，我想打开你写你从第一步得到的

以.sh扩展名保存此文件

3-然后，更改文件的权限，使其可执行:

chmod u+x emu.sh

4-现在打开模拟器，用下面的命令执行这个bash脚本文件

./emu.sh

如果您严格地试图从命令行运行模拟器，请在OSX中尝试此操作。

"/Applications/Android Studio.app/sdk/tools/emulator" -avd <NAMEOFDEVICE> -netspeed full -netdelay none

您可以通过向.bash_profile添加别名并将其发送到后台作业来简化它。

alias android='/Applications/Android\ Studio.app/sdk/tools/emulator <NAMEOFDEVICE> -netspeed full -netdelay none &'

让Bash知道这些变化。

source ~/.bash_profile

(Linux) 在你的终端复制粘贴和改变三个蓝色的字段

/home/YouUser/Folder/adt-bundle-linux-x86_64-20140702/sdk/tools/emulator64-x86 -avd Android5.1.1

YouUser = user of session in linux
Folder = path of folfer
Android5.1.1 = You version of android in the emulator,for example (Android4.4.2)

你可以在你的文件夹home中查看模拟器 cd /home/Youuser/.android/avd/

我假设你已经构建了你的项目，只需要启动它，但你没有创建任何avd，必须使用命令行进行所有操作。你必须做以下事情。

Create a new virtual device (AVD) for the platform you need. If you have to use command line for creating your AVD, you can call android create avd -n <name> -t <targetID> where targetID is the API level you need. If you can use GUI, just type in android avd and it will launch the manager, where you can do the same. You can read more about AVD management through GUI and through command line. Run the AVD either by using command emulator -avd <name> or through previously launched GUI. Wait until the emulator fully loads, it takes some time. You can read about additional options here. Now you have to install the application to your AVD. Usually during development you just use the same Ant script you used to build the project, just select install target. However, you can install the application manually using command adb install <path-to-your-APK>. Now switch to emulator and launch your application like on any normal device, through the launcher. Or, as an alternative, you can use the following command: adb shell am start -a android.intent.action.MAIN -n <package>/<activity class>. For example: adb shell am start -a android.intent.action.MAIN -n org.sample.helloworld/org.sample.helloworld.HelloWorld. As a commenter suggested, you can also replace org.sample.helloworld.HelloWorld in the line above with just .HelloWorld, and it will work too.

现在假设你已经安装了Android Studio(2.2)在我的情况下，只有一个模拟器，你可能会使用这一行

export ANDROID_SDK_ROOT=~/Library/Android/sdk/ && emulator '@'`emulator -list-avds`

如果你经常这样做，让它变得更容易:

$ echo 'export ANDROID_SDK_ROOT=~/Library/Android/sdk/' >> ~/.profile

向~.aliases添加别名

alias androidup="emulator '@'`emulator -list-avds`" 

召回到源~/。概要文件~ /。在测试之前使用别名

下次只需要$ androidup