Develop Reference

Emulator Takes Much Time and at the end it Fail

I am new to developing Android applications. My first application takes too much time to load, and fails at the end.
I'm using a Windows 8 laptop with 4GB of RAM and an Intel processor. I'm writing all of this because I saw an answer regarding Windows.
[2014-03-08 07:26:52 - Mytest] Android Launch! [2014-03-08 07:26:52 -
Mytest] adb is running normally.
[2014-03-08 07:26:52 - Mytest] Performing
com.example.mytest.MainActivity activity launch
[2014-03-08 07:26:53 - Mytest] Automatic Target Mode: launching new
emulator with compatible AVD 'nnt'
[2014-03-08 07:26:53 - Mytest] Launching a new emulator with Virtual
Device 'nnt'
[2014-03-08 07:27:15 - Mytest] New emulator found: emulator-5554
[2014-03-08 07:27:15 - Mytest] Waiting for HOME
('android.process.acore') to be launched
[2014-03-08 07:39:36 - Mytest] HOME is up on device 'emulator-5554'
[2014-03-08 07:39:36 - Mytest] Uploading Mytest.apk onto device
'emulator-5554'
[2014-03-08 07:39:36 - Mytest] Installing Mytest.apk...
[2014-03-08 07:41:51 - Mytest] Failed to install Mytest.apk on device
'emulator-5554!
[2014-03-08 07:41:51 - Mytest] (null) [2014-03-08 07:41:51 - Mytest]
Launch canceled!
Please let me know.

I have had this problem before. I have tried following steps.
Plug-in your charger, if it's not connected.
Start emulator from AVD - manager, this works for most of the time.

Try Genymotion emulator, it is free for personal use and it works smooth. You also can use Eclipse plug-in.
Get it here: Genymotion
If you having troubles with installation, here is User Guide.
I am using it and I am very happy.

Why is the emulator in eclipse restarting?

I am following http://developer.android.com/training/basics/firstapp/running-app.html
and trying to run my first android app on the emulator on my PC.
The emulator is running (started from eclipse)
I managed to lauch myFirst App via eclipse as described, although in this tutorial it should be added you have to wait minutes before the emulator is up and running.
Now my problem is that when I modify myFirstApp, and wnat to test it, that eclipse keeps starting a new emulator:
[2012-10-15 19:32:44 - MyFirstApp] ------------------------------
[2012-10-15 19:32:44 - MyFirstApp] Android Launch!
[2012-10-15 19:32:44 - MyFirstApp] adb is running normally.
[2012-10-15 19:32:45 - MyFirstApp] Performing com.example.myfirstapp.MainActivity activity launch
[2012-10-15 19:32:45 - MyFirstApp] Automatic Target Mode: Preferred AVD 'Hobbit' is not available. Launching new emulator.
[2012-10-15 19:32:45 - MyFirstApp] Launching a new emulator with Virtual Device 'Hobbit'
This is extremely annoying, because of the performance penalty to launch a complete emulator.
But what is even more frustrating that I get back the very first version of MyFirstApp in this new emulator.
When I restart myself the emulator from scratch I see this in the console:
[2012-10-15 19:55:42 - MyFirstApp] New emulator found: emulator-5554
[2012-10-15 19:55:42 - MyFirstApp] Waiting for HOME ('android.process.acore') to be launched...
[2012-10-15 19:56:57 - MyFirstApp] emulator-5554 disconnected! Cancelling 'com.example.myfirstapp.MainActivity activity launch!'
Why? The emulator is still running at this point. This cannot be the normal way of working. Can anybody help me out?

Go to Run -> Run Configuration in eclipse. Select your application and update the target tab at right side to "Always prompt to pick device"

If the emulator is running and doesnt show in Devices then try to reset adb.
In eclipse: Device tab-> Dropbown - > reset abd

hello world fails to show up in emulator

I followed Hello World tutorial exactly. Emulator comes up but fails to show Hello World text. Here's the log info:
[2011-11-26 20:06:57 - HelloAndroid] Android Launch!
[2011-11-26 20:06:57 - HelloAndroid] adb is running normally.
[2011-11-26 20:06:57 - HelloAndroid] Performing com.example.helloandroid.HelloAndroid activity launch
[2011-11-26 20:06:57 - HelloAndroid] Automatic Target Mode: launching new emulator with compatible AVD 'AndroidPhone'
[2011-11-26 20:06:57 - HelloAndroid] Launching a new emulator with Virtual Device 'AndroidPhone'
[2011-11-26 20:07:09 - HelloAndroid] New emulator found: emulator-5554
[2011-11-26 20:07:09 - HelloAndroid] Waiting for HOME ('android.process.acore') to be launched...
[2011-11-26 20:45:37 - HelloAndroid] HOME is up on device 'emulator-5554'
[2011-11-26 20:45:37 - HelloAndroid] Uploading HelloAndroid.apk onto device 'emulator-5554'
[2011-11-26 20:45:38 - HelloAndroid] Installing HelloAndroid.apk...
After about 1/2 hour, this shows up in the log...
[2011-11-26 20:48:59 - HelloAndroid] Failed to install HelloAndroid.apk on device 'emulator-5554!
[2011-11-26 20:48:59 - HelloAndroid] (null)
[2011-11-26 20:49:02 - HelloAndroid] Launch canceled!
I’ve read posts on similar problem. I’ve tried many suggested solutions including restarting Eclipse, rebooting and restarting eclipse, creating a new project in eclipse, starting emulator first with “wipe user data” box checked, increasing the emulator time-out period from 5000 to 20000, unlocking emulator by clicking and dragging mouse, clicking Menu and Home buttons on emulator, and running the Layout version. Nothing worked. I’m using Android 4.0 AVD and Eclipse Build id: 20110916-0149 and the latest JDC on a Dell Inspiron 1501 laptop.
It’s hard to believe Google would make this discouraging example as the first impression new users experience. Hopefully someone can help.

When you have the "Failed to install HelloAndroid.apk on device 'emulator-5554!", try to wait some seconds,
dont close the VM and
reclick on "Launch Buton"

When you create a new Activity project, it effectively creates a Hello World app. Create a new project. Don't modify it. Just run it. If you don't see a Hello world message, check your install.

problem with emulator failing to start correctly

Since last week when I run a project it starts the emulator but sooner I got this message and I have to close and restart again otherwise it refuse to install the apk. Does someone know some reasons and what I have to do beside destroy and rebuild the Avd cause it doesn't make any change. Thank you. Here's the console lines
[2011-07-30 19:39:24 - NewStavanger] ------------------------------
[2011-07-30 19:39:24 - NewStavanger] Android Launch!
[2011-07-30 19:39:24 - NewStavanger] adb is running normally.
[2011-07-30 19:39:24 - NewStavanger] Performing com.wocmultimedia.NewStavanger.Main activity launch
[2011-07-30 19:39:24 - NewStavanger] Automatic Target Mode: launching new emulator with compatible AVD 'avdGooglemarket'
[2011-07-30 19:39:24 - NewStavanger] Launching a new emulator with Virtual Device 'avdGooglemarket'
[2011-07-30 19:39:31 - NewStavanger] New emulator found: emulator-5554
[2011-07-30 19:39:31 - NewStavanger] Waiting for HOME ('android.process.acore') to be launched...
[2011-07-30 19:40:46 - NewStavanger] emulator-5554 disconnected! Cancelling 'com.wocmultimedia.NewStavanger.Main activity launch'!

A lot of times wiping the user data off the emulator will fix those types of problems, I've had emulators get pretty buggy sometimes, especially if you constantly open and reclose them. Reinstalling the emulator would likely fix the issue. If its setup is fairly simple, that should only take a few minutes.

Try this site:
http://phonedevelopment.blogspot.com/2010/09/android-emulator-5554-disconnected.html

Cannot run Android apps with eclipse on OS X 10.6

Running Eclipse 3.5.2 (Classic) in OS X 10.6.7 with the ADT plugin. I have the SDK installed and have run the SDK and AVD Manager to install all available platforms and tools. I have an AVD setup with Android 2.2 as the target API, and have configured the example 'Hello, Android' app for Android 2.1 Update 1, so compatibility should not be an issue. When I Run the application, it starts up the emulator, but gives me an error before the android startup animation appears. Here is the output in the Console window of Eclipse:
[2011-04-10 06:45:40 - HelloAndroid] ------------------------------
[2011-04-10 06:45:40 - HelloAndroid] Android Launch!
[2011-04-10 06:45:40 - HelloAndroid] adb is running normally.
[2011-04-10 06:45:40 - HelloAndroid] Performing com.twopoint7.testing.HelloAndroid activity launch
[2011-04-10 06:45:40 - HelloAndroid] Automatic Target Mode: launching new emulator with compatible AVD 'testDroid'
[2011-04-10 06:45:40 - HelloAndroid] Launching a new emulator with Virtual Device 'testDroid'
[2011-04-10 06:46:04 - Emulator] 2011-04-10 06:46:04.613 emulator[997:903] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
[2011-04-10 06:46:04 - HelloAndroid] New emulator found: emulator-5554
[2011-04-10 06:46:04 - HelloAndroid] Waiting for HOME ('android.process.acore') to be launched...
[2011-04-10 06:47:22 - HelloAndroid] emulator-5554 disconnected! Cancelling 'com.twopoint7.testing.HelloAndroid activity launch'!
Any advice on what might be going wrong would be greatly appreciated. I've found lots of posts (here and on other forums) that seem to indicate the NSQuickDrawView vs. Quartz warning seems to be a problem across the board but doesn't have a solution yet. I'm more concerned with the "emulator-5554 disconnected..." bit and the fact that I can't seem to run any apps in the emulator. Any other info I can provide which would be helpful? Any insight?
Thanks in advance for your time!

I guess you need to reset your adb after launch the emulator. In eclipse, go to window -> show view -> other -> device(under android folder).
In the device view, find and reset adb. Then run your apps.