Develop Reference

My android emulator doesnt launch

I installed the Android Development Tool and created my first app but when I run the app, the emulator doesnt launch.The console reads:
[2013-06-18 14:36:57 - MyFirstApp] Android Launch!
[2013-06-18 14:36:57 - MyFirstApp] adb is running normally.
[2013-06-18 14:36:57 - MyFirstApp] Performing com.example.myfirstapp.MainActivity activity launch
[2013-06-18 14:37:19 - MyFirstApp] Launching a new emulator with Virtual Device 'AVD'
Unfortunately, it never launches. The following is what I have tried to do to solve the problem:
I created AVD both by graphical user interface and command line but it didnt run.
I tried to open task manager and stop the adb.exe process then run it again but no.
I tried to kill the adb server and restart it by command line but again no, didnt run.
I finally tried to launch the emulator on command line and this is what it says (directly translated): "a problem interrupted the program, trouble-free operation. Windows will close the program and notify you if a solution to the problem is available."
Please help.

After a long struggle, I decided to install a new Operating System. The emulator can now launch.

Need help about android basic things that confused me for a few days

I'm a freshman for the android developing, and I met a question that confuse me for a few days.
I run the simple "hello world" code (I promise there is no error in the code, cause I copy it directly from the homepage of SDK), then the emulator runs but my app is not installed in it. and the console is like this:
[2012-06-12 23:05:50 - HelloPig] ------------------------------
[2012-06-12 23:05:50 - HelloPig] Android Launch!
[2012-06-12 23:05:50 - HelloPig] adb is running normally.
[2012-06-12 23:05:50 - HelloPig] Performing com.example.hellopig.HelloPigActivity activity launch
[2012-06-12 23:05:50 - HelloPig] Automatic Target Mode: launching new emulator with compatible AVD 'aaa'
[2012-06-12 23:05:50 - HelloPig] Launching a new emulator with Virtual Device 'aaa'
[2012-06-12 23:05:55 - Emulator] emulator: emulator window was out of view and was recentered
[2012-06-12 23:05:55 - Emulator]
It just keep holding there, I think there should be something like installing app and success. I firstly thought the problem is eclipse cannot find my emulator, but there is no error. I have checked the build debug keystore path, it is the place where my emulator is.
I also have checked the environment variables, but I think there is no problem with them
(I can run java and adb in cmd)
I really have no idea, so could anyone help me?
following are the versions of the softwares:
jdk 1.6
ADT 18.0.0
SDK platform 1.5
eclipes java EE IDE for developers
Looking forward to hearing from anyone of you :)

I would suggest starting your emulator before trying to install your app. It looks like you are waiting for Android to start your emulator for you.
Otherwise there isn't enough information here. I would suggest running logcat (open a command prompt, and type 'adb logcat') which will give you more verbose logging information.
Post the output from your logcat (if your problem isn't immediately obvious).

android app won't install

I recently bought a couple of books on android programming and have been having a terrible time getting anything to work. I finally got one of the books sample code to show up. I noticed that when it worked that in the eclipse console it showed installation logging. In everything else I've tried it never gets to that point. All I ever get is what is shown below. Does anyone know why it doesn't continue to the installation point?
I also noticed that in the code that does work, there's a folder structure in the bin directory that matches the src directory.
src>com.deitel.doodlz
bin>com>deitel>doodlz - contains all the class files
In my project, there is no folder structure like this in my bin directory. Is there something else I need to do besides just hitting the run button? Do I have to do some type of build first? Thanks.
[2012-03-12 21:21:52 - Now2] ------------------------------
[2012-03-12 21:21:52 - Now2] Android Launch!
[2012-03-12 21:21:52 - Now2] adb is running normally.
[2012-03-12 21:21:52 - Now2] Performing my.android.stuff.Now2Activity activity launch
[2012-03-12 21:21:52 - Now2] Automatic Target Mode: Preferred AVD 'android_2_3_3' is not available. Launching new emulator.
[2012-03-12 21:21:52 - Now2] Launching a new emulator with Virtual Device 'android_2_3_3'
[2012-03-12 21:21:57 - Emulator] emulator: WARNING: Unable to create sensors port: Unknown error
[2012-03-12 21:21:57 - Emulator] emulator: emulator window was out of view and was recentered
[2012-03-12 21:21:57 - Emulator]

cannot start Android emulator on Eclipse even though there are no errors

I'm trying to run one of the Android sample apps in Eclipse. I've been through all the possible errors, and now I was finally able to run without any of them. But still, nothing works, and the emulator just has the "android" sign shining on it.
The log I have is:
[2011-12-26 21:18:50 - AccelerometerPlayActivity] ------------------------------
[2011-12-26 21:18:50 - AccelerometerPlayActivity] Android Launch!
[2011-12-26 21:18:50 - AccelerometerPlayActivity] adb is running normally.
[2011-12-26 21:18:50 - AccelerometerPlayActivity] Performing com.example.android.accelerometerplay.AccelerometerPlayActivity activity launch
[2011-12-26 21:19:26 - AccelerometerPlayActivity] Uploading AccelerometerPlayActivity.apk onto device 'emulator-5554'
[2011-12-26 21:19:26 - AccelerometerPlayActivity] Installing AccelerometerPlayActivity.apk...
[2011-12-26 21:19:28 - AccelerometerPlayActivity] Success!
[2011-12-26 21:19:28 - AccelerometerPlayActivity] Starting activity com.example.android.accelerometerplay.AccelerometerPlayActivity on device emulator-5554
I already changed the configuration of the AVD, created a new one, etc. Nothing seems of any help
Does anyone have any idea?
Thanks

I would try to 'downgrade' the emulator.
I'm assuming you aren't programming for the newest android 4.0+ or something like that,
(Samsung galexy s is 2.0 or 2.2, I think).
When I had that problem it helped me alot.
try it :)

I had similar problem a long time ago. Make sure that path to your android sdk (or adb) doesn't contain any national symbols (cyrillic in my case) except English.
If you using Windows, also check your profile name.

Wait a little more.... in some computers, the emulator wait up to 10 minutes to run first time. Its a lot of time, but, next compile time, don´t close it, just clear proyect, build all and run, and it will work.

Emulator not opening in Android

When I am running my app on emulator it dont open and gives the following Error.
[2011-01-08 16:16:56 - AudApp] ------------------------------
[2011-01-08 16:16:56 - AudApp] Android Launch!
[2011-01-08 16:16:56 - AudApp] adb is running normally.
[2011-01-08 16:16:56 - AudApp] Performing com.a1technology.AppingActivity activity launch
[2011-01-08 16:17:00 - AudApp] Launching a new emulator with Virtual Device 'avd_2.3'
[2011-01-08 16:17:00 - Emulator] emulator: ERROR: the user data image is used by another emulator. aborting

In : yourusername.android\avd\youremulatorname\
the folders:
cache.img.lock, sdcard.img.lock and userdata-qemu.img.lock
are created when the emulator starts and should be deleted when it closes. If the exit wasn't clean for some reason, then they aren't deleted. Delete them manually and it should fix your problem.

I solved the problem by restarting Eclipse with no emulator running.