I'm on Mac, working on Android development from the terminal. I have successfully created the HelloWorld project and now I'm trying to run it from the command line in the Android emulator. Which command runs the emulator for my HelloWorld project?
I already have the Android tools and platform-tools in my PATH.
Edit:
How do I tell the emulator to run my HelloWorld project from the command line? I've already built the project with ant.
I assume that you have built your project and just need to launch it, but you don't have any AVDs created and have to use command line for all the actions. You have to do the following.
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 .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 .install
target. However, you can install the application manually using command adb install <path-to-your-APK>
.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.List all your emulators:
emulator -list-avds
Run one of the listed emulators with -avd
flag:
emulator -avd @name-of-your-emulator
where emulator
is under:
${ANDROID_SDK}/tools/emulator
cd ~/Library/Android/sdk/emulator
./emulator -avd {AVD_NAME}
./emulator -list-avds
Just to add here, whenever you get "error: device offline" means that connection with emulator & adb bridge has been broken due to time taken in emulator startup.
Rather than re-starting emulator at this point try below two commands which stops & start adb bridge again.
adb kill-server
adb start-server
Here you can check the options to execute this command via command-line:
emulator -avd avd_name [-option [value]] ... [-qemu args]
For example, I use it like this below:
emulator -avd ICS_ARM -wipe-data -no-boot-anim -cpu-delay 0
If you are strictly trying to run the emulator from the command line try this in OSX.
"/Applications/Android Studio.app/sdk/tools/emulator" -avd <NAMEOFDEVICE> -netspeed full -netdelay none
You can simplify it by adding an alias to the .bash_profile, and sending it to a background job.
alias android='/Applications/Android\ Studio.app/sdk/tools/emulator <NAMEOFDEVICE> -netspeed full -netdelay none &'
Let Bash know about the changes.
source ~/.bash_profile
Open command prompt and go to <android-Home>\\sdk\\tools>emulator -avd <AVD_NAME>
Here "emulator"
is the command used to open your Android Virtual Device .
If you have Git Bash you can open your emulator with a double-click, with some initial setup (tested in Windows 10 only) :
cd ~/AppData/Local/Android/sdk/emulator
./emulator -list-avds
and keep note of the emulator's name. MY_EMULATOR
for example. Open Notepad and add these two lines (insert your emulator's name instead of MY_EMULATOR
):
cd ~/AppData/Local/Android/sdk/emulator; ./emulator -avd MY_EMULATOR
Save the file somewhere convinient as myfile. sh . You can change "myfile" as suits you best, but the extension .sh is needed.
chmod +x myfile.sh
. Remember to put your file's name instead of myfile .And that's it! From now on, everytime you need to start that emulator, just locate your myfile.sh and double click on it and wait for your Android emulator to launch!
Instructions for Mac with zsh :
Open terminal window (CTRL+ALT+T) Run command nano ~/.zshrc
to edit your profile Add following lines in the opened file:
export ANDROID_SDK_HOME="~/Library/Android/Sdk"
alias emulator="$ANDROID_SDK_HOME/emulator/emulator"
Save the file (CTRL+O, CTRL+X) Source the profile by running command source ~/.zshrc or just log out and log back in Test by running the command:
emulator -help
or emulator -list-avds
to show your simulator in terminal and run Android emulator with command:
emulator -avd <name>
NOTE: Should be same for bash by replacing .zshrc with .bashrc
(Linux) In you terminal Copy & Paste and changing the three fields in blue
/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)
you can view the emulators in you folder home cd /home/Youuser/.android/avd/
Nowadays asuming you have Android Studio installed (2.2) in my case and just 1 emulator you might use this one liner
export ANDROID_SDK_ROOT=~/Library/Android/sdk/ && emulator '@'`emulator -list-avds`
If you do this often, make it easier:
$ echo 'export ANDROID_SDK_ROOT=~/Library/Android/sdk/' >> ~/.profile
Add an alias to ~.aliases
alias androidup="emulator '@'`emulator -list-avds`"
Recall to source ~/.profile ~/.aliases
before testing it
Next time just $ androidup
The android create avd
command is deprecated. It's now recommended to use avdmanager
instead to launch emulators from the command line.
First, create a new emulator if one doesn't already exist:
avdmanager create avd --name "MyEmulator" -k "system-images;android-
26;google_apis;x86"
This assumes that you already have an X86 system image installed that matches API 26, and has the Google APIs installed.
You can then launch the emulator with emulator @MyEmulator
.
list of avd name available on
.android/avd
/SDK_PATH/tools/emulator -netdelay none -netspeed full -avd "AVD_NAME"
In windows, I use this PowerShell script to start it up.
$em = $env:USERPROFILE+"\AppData\Local\Android\sdk\tools\emulator.exe";
Start-Process $em " -avd Nexus_5X_API_24" -WindowStyle Hidden;
Go to the directory where emulator is located
${ANDROID_SDK}/tools/emulator
Check emulator list from CLI
emulator -list-avds
Run a AVD from the list
emulator -avd {avd_name}
I am late, here but want to share so may be it help some one and me too when ever needed later :) , So below is the way to open emulator from command line with one command using bash script. I am using MX Linux but process is same on all operating systems
1- First Check the installed emulators
emulator -list-avds
it will result like below
emulator -list-avds
Nexus_4_API_28
Pixel_2_API_28
2- open any plain text or code editor and create a new file and write as below
#!/bin/sh
emulator -avd Nexus_4_API_28
Nexus_4_API_28 is the emulator that i want to open you write yours which you got from first step
save this file with .sh extension
3- Then, change the permissions on the file to make it executable:
chmod u+x emu.sh
4- Now open the emulator just executing this bash script file with following command
./emu.sh
On Mac (and Linux I think), after you have created your AVD, you can make an alias: alias run-android='~/Library/Android/sdk/tools/emulator -avd ${YOUR_AVD_NAME} &'
Note : the execution of the alias will not lock your terminal, if you want that, just remove the last '&' .
Run emulator
it self will give you an error because he expect that, in your current position, you have: /emulator/qemu/${YOUR_PATFORM}/qemu-system-x86_64'
to start the emulator.
I wrote this simple shell script using Zenity that lets you pick which avd you want to run. If you don't have ANDROID_HOME defined, you can just replace that with the full path to emulator. This would be easy to do with select instead of Zenity also, but I opted for Zenity since I'm running it from the xfce-application menu (though a .desktop-file).
#!/bin/sh
opt=$(zenity --title="Choose AVD" --text="Choose which emulator to start" --list \
--column="Devices" --separator="\n" `$ANDROID_HOME/emulator/emulator -list-avds`);
$ANDROID_HOME/emulator/emulator -avd $opt
运行第一个可用的模拟器:
~/Library/Android/sdk/tools/emulator -avd `~/Library/Android/sdk/tools/emulator -list-avds | awk '{print $1}'`
For one-click ( BATCH file) launch, this is what I've done:
c: cd C:\\Program Files (x86)\\Android\\android-sdk\\emulator\\ emulator -avd Pixel_2_API_28
Explanations:
Using:
emulator -list-avds
This will list all the devices installed inside your Android Studio.
emulator -avd device_name
For example, if you got Pixel_3a_API_30_x86
after running the command in option 1, then your command to run emulator will be: emulator -avd Pixel_3a_API_30_x86
Starting emulator from command line with dns help
Emulator program location : /Users/{{UserName}}/Library/Android/sdk/tools
Check existing avd :- emulator -list-avds
Start emulator with dns set /Users/{{UserName}}/Library/Android/sdk/tools/emulator -avd Pixel_API_26 -dns-server 8.8.8.8
nano ~/.zshrc
to edit your profileexport ANDROID_SDK_HOME="~/Android/Sdk"
alias emulator="$ANDROID_SDK_HOME/emulator/emulator"
source ~/.zshrc
or just log out and log back inemulator -help
in terminalNOTE : Should be same for bash
by replacing .zshrc
with .bashrc
A launcher script which lists existing AVDs and lets you pick the one you want. Requires python3
( at least v3.4
) and a valid environment variable ANDROID_HOME
or ANDROID_SDK
pointing to the Android SDK dir.
#!/usr/bin/env python3
import os
import subprocess
from pathlib import Path
android_emulator_dir: Path = Path(os.environ['ANDROID_HOME'] or os.environ['ANDROID_SDK']) / 'emulator'
if android_emulator_dir.exists():
emulator_dir = android_emulator_dir.absolute()
print(f'SDK emulator dir: {emulator_dir}', end='\n\n')
proc = subprocess.Popen(['./emulator', '-list-avds'], stdout=subprocess.PIPE, cwd=emulator_dir, text=True)
avds = {idx: avd_name.strip() for idx, avd_name in enumerate(proc.stdout, start=1)}
print('\n'.join([f'{idx}: {avd_name}' for idx, avd_name in avds.items()]))
avd_idx = input("\nType AVD index and press Enter... ")
avd_name = avds.get(int(avd_idx))
if avd_name:
subprocess.Popen(['./emulator', '-avd', avd_name, '-no-boot-anim'], cwd=emulator_dir)
else:
print('Invalid AVD index')
else:
print(f'Either $ANDROID_HOME or $ANDROID_SDK must be defined!')
osascript -e '
set avds to paragraphs of (do shell script "~/Library/Android/sdk/emulator/emulator -list-avds")
set avd to (choose from list avds with prompt "Please select an AVD to start" default items "None" OK button name {"Start"} cancel button name {"Cancel"})
do shell script "~/Library/Android/sdk/emulator/emulator -avd " & avd & " -no-boot-anim > /dev/null 2>&1 &"
'
The script above can also be run from the
Script Editor.app
or fromAutomator.app
(the bit between the single quotes). Also you can use Script Editor to save it as a native macos app: select File on the menu, press and hold the ⌥ (Option) key, select Save As and then select File Format : Application .
windows 10 what helped me:
1 cd C:\\Users\\xxx\\AppData\\Local\\Android\\Sdk\\emulator
2 list all the available: emulator -list-avds
3 start as NON-GUI mode: emulator -avd Pixel_3a_API_30_x86 -no-window
For automation (CI) we did something like below steps:
Frist, find SDK's tools location, and store in variable for later use.
tools=$ANDROID_HOME/cmdline-tools/latest/bin arch="x86_64" package="system-images;android-23;google_apis;$arch"
Ensure Android-image's downloaded.
$tools/sdkmanager "$package"
Accept the licenses.
echo yes | $tools/sdkmanager --licenses
Create AVD.
echo no | $tools/avdmanager create avd --force --name MyAVD --abi google_apis/$arch --package "$package"
Says "no" to "Do you wish to create a custom hardware profile? ..."
Launch emulator parallel.
$ANDROID_HOME/emulator/emulator -netdelay none -netspeed full -no-snapshot-load -no-snapshot -avd MyAVD > /dev/null &
Build APK.
./gradlew assembleDebug
At last, Android-tests (Instrumented tests) automatically detect and run on Emulator.
./gradlew connectedAndroidTest
Note that because we launch Emulator parallel, you need to wait until Emulator is ready, and that before Step #7.
Maybe count build-time with script, and if build takes less than what Emulator-launch takes, call
sleep
.
For Windows:
Search Environment in Windows Search Bar and choose "Edit the System Environment Variable"
In the System Properties window, click on Environment Variable and specify the value of the PATH environment variable:
C:\Users\{ USER }\AppData\Local\Android\Sdk\emulator.
Now open CMD or Powershell and type: emulator -list-avds
This will show list of all AVDs. To run specific AVD, type in CMD/Powershell: emulator -avd {EmulatorName}
If you have added correct path of the android emulator, AVD will open.
If you already have emulator and wanted to use that using command just use this 1 line code only
cd C:\Users\yourUserName\AppData\Local\Android\Sdk\emulator | ./emulator -avd Pixel_5_API_32
Thanks me Later...
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