Can not start android emulator from command line

Question

Windows 7, Android Studio 2.3

I has 3 emulators. And all success start from Android Studio.

But I want to start them from command line. So my steps (from command lines):

1. emulator -list-avds

Success show all my emulators:

1. Nexus_3_7_API_17_ver_4_2_1
2. Nexus_3_7_hdpi_API_24_7_0
3. Nexus_5_96_xxhdpi_API_24_7_0

So I want to start one of them:

emulator -avd Nexus_3_7_API_17_ver_4_2_1

But I get error:

[8648]:ERROR:./android/qt/qt_setup.cpp:28:Qt library not found at ..\emulator\lib64\qt\lib
Could not launch '..\emulator/qemu/windows-x86_64/qemu-system-i386.exe': No such file or directory

Answer 1

Adding emulator path in Environmental Variables solved my problem. Now, I can run emulator command from anywhere.

You can achieve this by following these steps:

1. Open 'Advanced System Settings'.
2. Click 'Environmental Variables'.

3. Add the following to Path variables in both boxes:

   %USERPROFILE%\AppData\Local\Android\Sdk\emulator

4. Restart Command Prompt.

Note: Your path could be different than the one mentioned above. If this is the case, then you have to search for your emulator path.

Answer 2

For Mac user, similar to Pascal's answer, in Terminal type:

cd /Users/myname/Library/Android/sdk/tools
./emulator -adv mydevicename

For other mac users below might be what's needed.

cd ~/Library/Android/sdk/emulator
./emulator -avd Nexus_S_API_31 -change-locale fr-CA

my error when executing the followings:

emulator -avd Pixel_2_API_28

[4809612736]:ERROR:android/android-emu/android/qt/qt_setup.cpp:28:Qt library not found at ../emulator/lib64/qt/lib
Could not launch '/Users/myname/.android/../emulator/qemu/darwin-x86_64/qemu-system-x86_64': No such file or directory

Answer 3

I had the exact same issue and I am using a workaround. Let me explain:

There is a 'bug' in the emulator: it is not able to find the relative path

..\emulator\lib64\qt\lib

Incredibly awesome since this is so simple to fix... whatever.

Just cd to c:\path\to\your\android-sdks\emulator, typically something like

cd c:\Users\userName\android-sdks\emulator

then, in this directory, run any emulator command you want, for instance your command:

emulator.exe -avd Nexus_3_7_API_17_ver_4_2_1

in your teminal this will look like this:

c:\Users\userName\android-sdks\emulator> emulator.exe -avd Nexus_3_7_API_17_ver_4_2_1

and it will work.