Develop Reference

AVD is online, but doesn't show anything

I am developing an Android app in Android Studio. When I try to run it on an AVD, the AVD screen shows nothing.
The device frame is visible, but there is nothing inside it. The message "waiting for target device to come online" doesn't show up either.
Furthermore, I am unable to edit the graphics in the AVD settings. I have tried running the program both normally and from the AVD manager, but it doesn't work either way.
Other solutions which I have tried (and failed) are removing C:\Windows\System32\Wbem from the PATH environment variable, ending the ADB process in Task Manager, and wiping data from the AVD in AVD manager. Oh, and I even uninstalled and reinstalled Android Studio but it still doesn't work, even for a basic Hello World program. Any help would be greatly appreciated.
https://imgur.com/a/rzMmz3E

I faced this problem due to my ram several times and even after upgrading I had to make several changes. The best solution is to set up a new avd. use Nexus S, and a light image. Start with API 16 and when it works go ahead and create your desired AVD. Keep your eye on the pop up errors AVD shows like HAXM

It may seem silly but have you checked if the emulator is not locked?

Ok, when Emulator is not displaying anything and saying like, waiting for online,
after click on power button then what you have to do is Go to,
AVD Manager then in Actions section click on bottom triangle button and click on "Cold Boot Now" to make working your Emulator.

facing problems with my android emulator

I'm new to android developing, and when I finally sit down to learn, my android emulator wouldn't run. Well, some button is tellimg me the AVD: Nexus_5_API_23_x86 is running, but I don't get any emulator screen popping up even after leaving my laptop in overnight.
it's the first time I'm running the emulator, and the emulator screen has never appeared before.
Also, I always get this message displayed:
C:\Users\HUBERT\Application\Local1\Android\sdk1\Tools\emulator.exe -netdelay none -netspeed full -avd Nexus_ 5_API_23_x86
Also, if I click to run an app, I get the device chooser pop up, I select the Nexus and hit OK, but nothing happens. I still don't get the emulator screen.
Please help

You need to use the adv manager to get something that will work on your laptop. On the second bar down, the one under your "file, edit, view bar..., select the AVD manager. It's the third icon from the "?" icon traveling left. Try x86 and arm setups to see what will work. remember that the initial load will take some time. 2-3 minutes with 4 gig of RAM. what OS and how much RAM do you have?

finally, I did it by unchecking the emulated performance from Use Host GPU to Store a snapshot for faster startup, and that worked fine..
. at least for now.
I also downgraded the API from API 23 to API 15. Everything now seems to be OK.

DDMS Screen capture does not work

I cannot get the "Devices" screen capture (as shown in DDMS perspective) to work with my Archos A80 (it works with a Samsung Galaxy).
I tried the suggestions mentioned in Android screen capture problem in Eclipse . When the running DDMS stand-alone as suggested there, I see i nthe windows console: W/ddms: Unable to get frame buffer: time out. I have already set the time out to 35000 in the DDMS options to no avail.
Any other suggestions?

I had the same problem. After I disabled "Use host GPU" it works like a charm.

I also cross-posted this answer in the question you linked: This works for me, also when Logcat ceases to work: When I disable and re-enable the debug mode on the device, everything is working again.

I think you should try this on eclipse
Go to Window -> show view -> other -> android -> devices, then click **OK**
Now select the device which you want to take screen shots and then click Capture Screen button on the rightside of the Devices screen.

Screen Size in Eclipse Simulator

I'm going through a simple example - I'm using Eclipse -
When I click on the "run" toolbar icon, my app start screen is shown (as I was hoping for) but the entire droid simulator is huge / too large.
I searched and found that I should go to Window - Android SDK and SDK Manager. The highlight my simulator and select start then click Scale Display to Size and then enter the dimension. Then Click Launch.
When I do this procedure I get a generic android window -I can slide the start bar and so forth but I do not get my start screen of my program (set up in the main.xml).
Can you help resolve this?

In Eclipse if you Select the Android SDK and AVD Manager in the Window drop down menu.
You should be able to change the screen size of your Android Virtual Device (Emulator) there.
Look up the resolution of the device you're targeting. E.g. QVGA for the HTC Wildfire.

If the emulator resolution is correct, you can ask the emulator to scale itself down using a command line option -scale
From eclipse, you would add this as Additional Emulator Command Line Options
Project | Properties
Select Run/Debug Setting
Choose the Launch configuration, select Edit
Select the Target Tab
You may need to grow the dialog here to see the additional Emulator launch options.
Here you can add a -scale option.
-scale .5
works for me

Project | Properties Select Run/Debug Setting Choose the Launch configuration, select Edit Select the Target Tab You may need to grow the dialog here to see the additional Emulator launch options.
Here you can add a -scale option.
-scale 0.55
works for me PERFEKT^^

Ooor..
You can download the HTC Wildfire skin (like I just did) with all of it's sweet keys and stuff all over the skin :) I'm lovin' it
Link to the skin and instructions to use
Now I have to figure out how to make it look just like the original device's OS. I believe that the last version for that HTC is 2.2.1 (API 8), but somehow looks quite different..

Another "on the fly" solution would be to start your emulator from the Android SDK & AVD Manager :
select your AVD, press start, check "Scale Display to real size", and have fun finding the size you want !
I use this often for debugging as the execution is a bit smoother on slow PCs like mine.
Hope this helps !

You can use the command line option -skin [height x width], for example -skin 320x480

You can start the emulator using the desired AVD from Android SDK & AVD Manager, then with Scale display to real size set the desired size.
Your application will not be launched, but next time you launch it, it will be done using the existing AVD if required properties match.
If it doesn't happen, select your project and Run -> Run As -> Run Configurations... -> Android Application -> Your application -> Target -> Deployment Target selection mode -> Manual

How to create a Virtual Android device 800x400 that I can see on my laptop?

I want to create a virtual device (nexus one) with wvga800, 800x480 but when I do, I can't see the whole screen on my 13" macbook pro, and I can't scroll down to see the bottom of the screen. How can I see the bottom of my virtual phone screen???
thanks,

You can scale your emulator window, to more closely match the actual device size. This is an option when you run the emulator from the Android SDK and AVD Manager. This is the window you get from running the android command, or from Window|Android SDK and AVD Manager in Eclipse.
Not only will this give you an emulator window closer in size to what the actual device is (so you do not assume people can necessarily click on too-small buttons, etc.), but it will also fit your screen.

This is actually possible from your project as well, no need to start the emulator through the manager:
1) go to Run > Run Configurations... > (Select your application on the left hand side) > (Click the "Target" tab on the right hand side).
2) At the bottom there, you'll see 'Emulator launch parameters'. In the 'additional emulator command line options', add '-scale 0.75' (to make the screen 75% of full size)
Next time you start the emulator it will have scaled properly, hooray!

Ok, I found it, you have to START the emulator from the AVD Manager, after you hit the 'START' button, another window pops up allowing you to set the size of the emulator display.
If you run a project from eclipse, you will not get that screen to set the size of the emulator.

To view full emulator make use of it's full screen mode using alt+enter keys on windows & Linux. But, for mac I'm not sure b'cos i have not checked for it; it has to be same like making your media player window full screen. Please do check for mac & update my post.