Develop Reference

Time out waiting for emulator to come online in android studio

I am new in android and trying to run a simple Hello world! program using android studio. I defined an AVD which is a Pixel device with API version 28 (Pie). When I run the program, the emulator gets up, but it doesn't load the application. I have tried following, but none of them worked:
Restarting avd server from command-line.
Changing skin to QVGA.
Creating a new emulator.
Setting graphics to software.
Any idea on the issue?

I think you do not enabled USB Debugging in your AVD.
Try this steps:
1- go to your AVD setting
2- System
3- About Device
4- Multiple Clicks on Build Number
5- Go back to setting
now you see Developer Options
6- goto developer options
7- check USB Debugging
Hope to be useful

Have you enabled USB debugging inside the emulator?
Before you create an Android emulator, you need to install an Android system image that your emulators can use.
Note: If you installed the Android SDK and NDK during RAD Studio installation, a valid Android system image (such as Android 4.2.2 API 17) should already be shown as Installed in the Android SDK Manager. In this case, you do not need to install another Android system image.
Still, if you are not able to run the emulator then try this Memu Emulator
This is a very small and simple emulator to use and install. It works perfectly on every pc.

Unable to create Android Virtual Devices

I'm developing a hybrid app using ionic2.
I have installed android SDK, JDK, ant and necessary things but I'm not able to create avd.
I ran this command- android avd
i see the window to create virtual devices. But even after setting every value, I'm not able to click OK.
Here's a screenshot.
Where did I go wrong?

As
No system images installed for this target.
indicates you need to open the Android SDK Manager and install the SDK Platform / System image for the Android version you are targeting.

You need to install these two from sdk.

For creating an Android emulator you must have the system image installed. You can do it either from sdk manager or during the installation.
for doing from sdk manager:
open sdkmanager (from android studio File->settings->Appearence and behaviour -> System settings -> Android Sdk)
Check more packages checkbox
Click on your desired Android version
Check the checkboxes of the system images you want
Click appy
For downloading during installation
open the AVD Manager
Create Virtual Device
choose the device and press next
download the system image

Running Android emulator via Cordova - AVD Manager missing from Android Studio

I have spent a 2 days trying to set up a Cordova App and to run it in an android emulator following the instructions on this page (https://cordova.apache.org/docs/en/latest/guide/cli/index.html) and relating pages. I have encountered countless issues, the latest one being that the android emulator wont run. When I run:
cordova emulate android
I get the following message which just stays there:
No emulator specified, defaulting to Nexus_5x_API_23_x86
Waiting for emulator.....
After searching for answers it seems I need to set up an Android Virtual Device (AVD). I have therefore started following these instructions (https://developer.android.com/studio/run/managing-avds.html) as told to do so by the Cordova instructions but I dont have the AVD Manager option available in my Android Studio.
I have the path to the SDK set up as shown below.
Can anyone help with this? I am so fed up and confused by it all...
***********UPDATE**************
After the help below, I launched the AVD Manager from the Android SDK folder but came across the following error:

Dont create the emulator in Android Studio. Instead create it with AVD Manager.exe
I suppose you have an android SDK folder (appart from the one created by Android Studio). In that SDK folder, you'll have AVD Manager.exe
Run the AVD Manager from there, create the virtual machine (emulator) and launch it.
Then use the appropriate cordova command to launch the app (in the running emulator ; created as I suggested)
In my case this is how the things work :
Steps :
I have downloaded android SDK package (for instance from here http://www.filehippo.com/download_android_sdk) and saved for instance at C:\Android_SDK
In that folder, you can download specific API level with SDK Manager.exe
and create emulators with AVD Manager.exe
Next create an emulator via AVD Manager.exe located where you saved the SDK package (here C:\Android_SDK)
Launch (start) the emulator
WHEN THE EMULATOR IS DONE LOADING, run cordova build android and cordova emulate android
(Don't forget to be in the working directory of your cordova project)
VOILA !!!

Looks like you're missing the whole "Android" option in the Tools subsection, so I would start by checking if the Menus and Toolbars to check if everything is ok. This is how it looks on my computer (it's the macOS version, but should be similar)
If you're missing that section, try "Adding after" the options you're missing. Anyway, you should be able to run the Android Virtual Device manager by running the AVD.exe command on the binary folder

Android Virtual Device Manager Requirments?

Can any one say what is the basic requirements (i.e) HardWare Specificaion needed to run the AVD Manager in Eclipse
I already Installed Eclipse and AVD Manager but it responding very slow
I did not install any other software apart from JDK,eclipse and ADT Bundle Its a Fresh System.
Only one thing I do when runs the AVD that Chrome and Mozila in open state
My System Specification is
Processor: i3 (3.30Ghz)
RAM :4Gb
My Question Is
Using above configuration but AVD is responding slow . What I want to do to make AVD fatser?

Try Manymo online emulator For More Details click here

Your system is fine, there are two ways that made my emulator faster:
While creating a virtual device using AVD, Use X86 instead of ARM. Now download the HAXM tool from the SDK manager in the extras section and install it. Now your new emulator based on intel will me as fast as a phone.(Only for intel based chips supporting Virtualization.)
For more on this option.
If option one does not work for you. Just start using genymotion emulator(Free for personal use). Its awesome.

Use an Android emulator image on multiple machines

I've created a custom build of Android and got it running as an emulator image on the development machine. I need to be able to use that image on another computer running Windows (it was built on the Mac). I've found the image files that the emulator uses (ramdisk.img, userdata.img and system.img) but I'm not sure how to create a new target that I can access from the SDK and AVD manager. Anybody have experience with this?
Thanks

You should perform the following steps:
Create a new AVD in AVD Manager with the version equal to your custor ROM.
Go to %userprofile%/.android/avd/your_avd_name.avd and substitute system.img with your built ROM
Run created AVD.