Develop Reference

Android Emulator doesnt load the App(Crash Report)

I am having a problem in running my app in Emulator. There are no errors or warnings in the code, its running perfect in device, but when it comes to emulator, it always crashes and the error message would be like this
[2012-01-16 16:13:55 - MyApp] Failed to install MyApp.apk on device 'emulator-5554!
[2012-01-16 16:13:55 - MyApp] (null)
[2012-01-16 16:13:55 - MyApp] Launch canceled!
I have tried the following things:
Run configurations > Target > Wipe user data > Run
Uninstalling the app and run it again
Restarting the emulator
adb kill-server && adb start-server
Creating a new Emulator and running the app in it
Restarting ADB
Restarting Eclipse
Starting the Eclipse after the emulator is launched completely
Increasing the ADB connection time-out to 1000
Restarting the System
Deleted the emulators and created new emulators and run in it after they are completely loaded
I don't know what else should I do. Sometimes if I run in a new Emulator the app runs for the first time and if I run it again after sometime, its the same crash report. I am not able to understand what is the problem.
Can anyone please suggest me what should I do now and where is the problem?
The Emulator used to work well before. This problem started a few days back.
Any help will be appreciated. Thanks All.

Have you defined all of your Activities correctly and completely in AndroidManifest.xml?
Can you paste the definition of your AndroidManifest.xml here?
Try that.

More possibilities:
Real refresh of AVD. It is funny, but Eclipse remembers your emulator. And if you turn it off and on it will be the same old good (or bad) one. You could reinstall all Eclipse for a real refresh. Or use a shorter, but tricky way. Change the max VM app heap size of the emulator. (Android SDK and AVD manager - Virtual device - Edit) Create it. Now you have a brand new emulator. Funny, isn't it? Now you can change the heap size back, if you wish.
Really, I think, you can maybe change any emulator parameter for the effect. Only I stumbled upon it by heap size and stuck to do it this way.
Try to repair the path.
Set the path environment variable with the path of "platform-tools" and "tools" found in the "sdk-home".
On windows(vista):- 1.Go to "Control Panel\System". 2.Select "Advanced System Settings". 3.Select the "Environment variable". 4.Set the path environment variable under the system variable with values "SDKHOME\platform-tools;SDKHOME\tools". Where "SDKHOME" is the home folder of Android sdk.
Check,if APK version of the application sits with that of the
emulator.
Try to set a longer waiting time for launch.
Increase AVD heap and SD card
Maybe, it would be good to try to recall all the changes that were done before the problem appeared?
Oh! One more: Don't you have by accident simultaneously launched emulator and connected device? If you have the same application (ssame name) on both, they could conflict in a similar way! They simply won't let each other to be launched
If nothing helps:
I was already so tired of Eclipse errors, that I have installed the IntelliJ Idea IDE, too. Now, if for the same project applications behave idself differently on both IDES, the problem is in IDE setting or emulator. If the problem is the same on both, I look for a bug in my application or the external device. Once I had a problem in OS - had to restart Linux. But in your case it is the most probable, that the problem is in AVD. I am afraid, the only variant you haven't try yet is to reinstall Eclipse. Uninstall, remove everything from the application except code, layouts and Manifest, and install Eclipse anew. Or make other Eclipse installation, with its own workshop. You can try the last version. But if the problem is in some setting, you can set it again...
Sorry, I have put here all methods I used or found.

here you can find a similar problem and the proposed accepted solution:
Honeycomb preview - can not install my app on emulator under Eclipse
I hope this helps.

This could be due to Antivirus/Firewall software installed on your PC. Have you tried to disable it?
You should also ensure that versions of Eclipse, ADT and Android SDK are up-to-date and compatible. Have you tried to contact update sites in Eclipse and in Android SDK manager? By the way, what versions of the that software do you use?

Let's go step by step.....
1º- You should try to start the emulator without the application installed.
2º- Once it is running correctly, try to install another .apk(like for example one default one....)
3º- Now, try to run the .apk. If the problem continues, try to delete the current VM and install another new one.

Can you see Emulator in "adb devices"? If yes, can you install any .apk?
If not - you have propablly something wrong with sdk

As some people have answered already partly. Make sure of a couple things which are very important specially because of the latest Android tools releases which requires.
The latest eclipse version. Yes, very very important:
http://www.eclipse.org/downloads/packages/eclipse-classic-371/indigosr1
Make sure you update the Android ADT plugin for eclipse:
http://developer.android.com/sdk/eclipse-adt.html#installing
I've encountered similar issue and that was what has helped. Restart your computer too possible?...

Use command prompt to start emulator
emulator.exe -avd google2.2 -scale 0.7 -dns-server 8.8.8.8
it may help you.

try cleaning your project or deleting the .APK file in the bin directory of your project.

LogCat & Console stopped working with Eclipse Android Emulator

The Console and LogCat printouts stopped working in Eclipse with the Android Emulator.
I'm getting the following Exception in the Console
[2011-11-10 11:04:58 - Unexpected error while launching logcat. Try reselecting the device.]device not found
com.android.ddmlib.AdbCommandRejectedException: device not found
at com.android.ddmlib.AdbHelper.setDevice(AdbHelper.java:736)
at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:373)
at com.android.ddmlib.Device.executeShellCommand(Device.java:319)
at com.android.ddmuilib.logcat.LogCatReceiver$1.run(LogCatReceiver.java:100)
at java.lang.Thread.run(Unknown Source)
Usually when the emulator is loading or updating an apk there's a printout in the Console telling the status. Now the Console is just blank.
I made sure the emulator is selected in the DDMS Tab.
I tried deleting and recreating the emulator in the AVD Manager. I restarted eclipse and the computer. I also updated all of the android and eclipse software in hope that the problem may get fixed. But, to no avail.
It may be related to a problem I had in my code yesterday. There was an unending loop in my code, so I had to stop the emulator mid code running.

I was having a similar error and it was driving me crazy. I just got it to work by doing the following steps:
In a shell or command prompt run: adb kill-server
Unplug the USB cable from the device and plug it back in.
Open the devices view (Window -> Show View -> Other -> Android -> Devices)
Click on the device on the android devices view.
I tested this for the emulator and it works if you relaunch the emulator instead of step 2.
Another way I got it to work was to restart Eclipse. But that's not usually ideal.
Note: Logcat would stop working any time I disconnected the usb cable from my android device (similar to killing an emulator).
I recognize this might not fix your initial issue, but it might help others who stumble on this question.

I also had the same problem, install the SDK even three times as TT, but the solution is to go to the folder android-sdk-windows, then platform-tools, and double click adb and ready!

Clean project with Project/Clean...

deleting the emulator and creating a new one did the job for me.
Even in my case a faulty code or a secret infinite loop, i think is the problem. i tried out something and logcat failed to boot up since then.

Most likely you have 2 instances of Eclipse running (I did).
(On Windows) Exit eclipse then check with the Task Manager if there is another eclipse.
End it as well as any image name "adb".

Eclipse gets stuck when trying to launch Android app

I'm trying to run helloandroid application on a Motorola Milestone A853. I typed "adb devices" and the mobile is properly recognized. However, when I try to run the application Eclipse always stuck at 27% "Launching delegate".
Which could be the reason?

Had the same 27% problem with an emulator. It only got fixed after I deleted the AVD and recreated it, so this is very likely device/emulator related (and furthermore restarting the ADB did not fix the problem).
EDIT:
Found this over at project pages as Issue #21073, answered by benpar:
Update: This scenario can also be avoided if the AVD emulator is launched from the AVD Manager within Eclipse. The issue happens when launching the first emulator from the Run button in Eclipse.
To avoid:
Start Eclipse
Window -> AVD Manager
Start an emulator
Run the project

I also had this problem when running an application in the emulator. Make sure the emulator is running BEFORE launching the app and you wont have this issue.

To get further information, try installing and launching the application from the command line outside of Eclipse. You'll find your .apk in the /bin folder of your project, then use:
adb install -r <projectname>.apk
It may work and if not, you may get better information about the cause of the error. My experience with Eclipse has shown that it can be finicky at times and this should help you isolate the issue.

I had the same stuck at 27% problem. Unplugging the device and plugging it back in fixed it.

I've found that the quickest way is to check with the Android Debug Bridge on the command line. Sometimes all it takes is stopping and starting the adb server. That is:
adb kill-server
Will stop the server. Then:
adb start-server
That should do it. Check the attached devices ( but it's not necessary )
adb devices
and it lists the devices attached.
Then go back to eclipse and start debugging again.
This can also be done in the Devices view through Eclipse.

I got the solution of this problem bit silly one. What i did was started emulator from one instance of eclipse.. Closed eclipse. Closing eclipse wont stop the emulator. Now re-launch eclipse. Now run your application in the emulator already running.

Very annoying problem. I was having to close down eclipse and the emulator and then start up again which became time consuming. Came here and read what Anna Lear and Vinay posted. Worked! I think in my case this problem happened because I exited eclipse while the emulator was still running. To correct, as Anna and Vinay posted, do this...
Make sure eclipse and emulator are shut down, then...
start elipse
start emulator
quit eclipse (do not quit the emulator)
start eclipse
now run your program (should load 100% and not get stuck)

For me it was the ADB which had hung. No amount of quitting either eclipse or the emulator had any effect.
Terminate the emulator
Terminate the ADB, (I simply killed its process using task manager.
Start the emulator again, (also causes the ADB to restart)
Run your program
It should no longer get stuck.

I was using Samsung Galaxy to run the app. I wasted a lot of time in running app but it was not launching and i had to restart eclipse every time.
For me, i just follow these steps and there was no problem any more
removed my device from my PC
Run the app
When it asks for attach your device or create AVD.
I reconnect my device and select for output.
Finally i resolved the issue

How to resolve "Waiting for Debugger" message?

I have HTC Comet connected to Eclipse with SDK 2.2. I do a debug build - the application does not run; though it does get installed on the device. On the device I get this message box on the Comet screen
Waiting for Debugger
Application HunyDew (process com.airvine.hunydew) is waiting for the debugger to attach.
[Force Close]
Whereas in the Eclipse console I get these set of messages
[2010-12-07 01:42:29 - hunydewprj] Android Launch!
[2010-12-07 01:42:29 - hunydewprj] adb is running normally.
[2010-12-07 01:42:29 - hunydewprj] Performing com.airvine.hunydew.HunyDewAAStartsHere activity launch
[2010-12-07 01:42:47 - hunydewprj] Application already deployed. No need to reinstall.
[2010-12-07 01:42:47 - hunydewprj] Starting activity com.airvine.hunydew.HunyDewAAStartsHere on device 308730C861BC
[2010-12-07 01:42:49 - hunydewprj] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.airvine.hunydew/.HunyDewAAStartsHere }
[2010-12-07 01:42:49 - hunydewprj] Attempting to connect debugger to 'com.airvine.hunydew' on port 8601
[2010-12-07 01:43:09 - hunydewprj] Launch error: Failed to connect to remote VM. Connection timed out.
The application runs fine in the Emulator - please help - what is it that I am missing here? Any hints/suggestions? Thanks

Some devices will only let the debugger attach if the application has the android.permission.SET_DEBUG_APP permission set in its manifest file:
<manifest>
<uses-permission android:name="android.permission.SET_DEBUG_APP"></uses-permission>
</manifest>

The Dialog Waiting for Debugger is shown if you are building a debug application or somewhere in your source code, you called Debug.waitingForDebugger();
Inside Android Studio 2.0 and above, there is an option of Attach Debugger to Android Process. It is the last menu item in the Run menu.

Not sure if this is what you are looking for, but try putting:
android:debuggable="true"
in the application tag in the AndroidManifest.xml

I've got this problem for long that I cant get my android emulator or device connect to the debugger while both the console and the emulator were displaying waiting for connecting to the debugger.
And configuration for debug inside eclipse also confused me so much before, but today, i got this problem solved, by the following steps:
When you want to debug a android project, for instance, mypro. you would right click on it in the "Package Explorer". Then choose "Debug as"-->"Android Application".
Then the emulator might stop at the "Waiting for connecting to debugger"(or something else similar to this).
Then you need to connect to the debugger yourself by click "DDMS" to open the DDMS perspective, and click "Devices" tab.
Then you can see a list of processes that are running on your emulator or device.
Double click on the one which you are debugging, then change to the Debug perspective, you can see the debugger is connected and you could debug your program. That's how I solved this problem.
By the way, my OS is Win7 32-bit. Eclipse's version is Helios Service Release 2. Android SDK is rev. 16 and platform-tools' 10.
Update.
I found that it is the problem of my TCP/IP configuration. The debugger can't be connected when i assign a static IP address(for access to internet).
So every time when the debugger is unable to connect, I always do the following steps:
1.close current eclipse window.
2.change the config of IP address to dynamic, it means getting a IP address by DHCP.
3.open up the eclipse again.
then the debugger is able to be connected. I thought it might be a issue of the internal mechanism of java debugger which is using socket connection.

I get this if I switch the usb cable to a difference port on my PC, odd but it works when I switch it back again. Also I think I've got this when there's been another device or emulator running at the same time, or two instances of Eclipse open.

For those getting this annoying behavior in 4.2.2 you have to un-check the setting for "wait for debugger" in the developer options. Of course, those options were hidden by Google, and you have to do a sneaky trick to get them to show back up. I had set them before they disappeared, and couldn't for the life of me find them again.
This page explains the procedure

Running Android Studio, I ran into this problem and after trying various remedies restarting Android Studio is what appeared to fix the problem.

My solution is to use the Dalvik Debug Monitor. Sometimes there is a red or green bug beside a process. Click on the device you're trying to load to. Select the Actions tab and reset adb. This usually attaches the debugger for me. I find that doing debugging through this Monitor works better for me than using the Android Eclipse plugin Logcat.

Closing the emulator and closing eclipse. Reopening Eclipse and starting the simulator worked for me.
The key thing to look for is in the Devices pane of Eclipse. If you start the emulator or device and it shows up in the device name list but says [null] and no running processes show beneath it, then it won't work correctly with loading your app into it.
If the name of the device comes up and is Online then things seem to work smoothly.
Don't know why it doesn't work out all the time though.

In my case, the problem is caused by adb connected with another device.
If several devices are connected in PC, remove other devices except required one.

I end up going into "Debug" perspective.
Then in the "Debug" frame, there are debug list or running list.
You have to decide which one is your current one that has this problem (Waiting
for debug...)
Then do right-click and choose "Terminate and Remove".
Then you try to run again. And that warning box will be gone.

I solved this issue this way:
Go to Run menu ====> click on Edit Configurations ====> Micellaneous and finaly uncheck the option Skip installation if APK has not changed

Rebooting the phone was the solution for me.

If your development environment is Windows make sure the USB drivers are correctly installed.
One way to ensure that the USB drivers are installed correctly is to get the PDANet Windows installer and let it install the USB drivers.
You can find the PDANet page here.

I would try to connect to the phone with ddms on its own without Eclipse. You might be running an emulator inside eclipse that you dont see or have some other problems with Eclipse.
Just run ddms from a command prompt and see if the device appears and you can connect to it.
You can also see if appears when you run adb devices and see that your phone is listed (and maybve something else..)

I got the same problem, I know I wasn't running any other instances, and I could see it with adb devices. I just did a restart of eclipse and it worked.

Rebooting the PC was the only thing that worked for me. It worked when I had this problem with an Android 2.2 phone, and also an Android 3.1 tablet.

I ran into this problem today. After spending most of the day trying to fix it, the only thing that ended up working was to create a new workspace and import my project into it. I hope this helps someone avoid all the trouble that I went through.

I also enounter this problem. In my environment, I use a tomcat as server and android as client. I found,
If tomcat is started, this error " Launch error: Failed to connect to remote VM. Connection timed out." will occur.
If tomcat is not run, adb works well.

I tried all the solutions above, it fixes the issue sometimes, but still from time to time I happened to get stuck with the "Waiting for the debugger to attach" message box.
The final solution in my case was to unplug all the Android devices but the one I want to debug on. I don't know which one is the culprit: the Nexus 7 running JB 4.2, the HTC One X running ICS, the HTC Desire S running Gingerbread, or the combintation of the 3, but as soon as I only have one device plugged in, it runs smooth as silk.

I used Task Manager to kill adb.exe to solve this problem. Adb.exe will automatically start after being killed.
Killing adb.exe has solved a lot of problems related to debug and emulators for me so far.

For Android Studio users I encountered this problem first time while trying to run a bare
bone project just after updating my jdk location. So I stumbled across this post. In my case simple Build->Clean Project did the job.

I was also having the same problem when using Android Studio and GenyMotion.
I am able to solve this problem by pausing the program and resuming it again after "Waiting for debugger" message is shown. It may work while using other IDEs and emulators as well.

Android Studio 1.2.2 on Mac OS 10.10
Same problem as others have reported.
I closed Android Studio, then checked from command line in terminal:
ps -efw|grep -i android
This reported a java process (.gradle/daemon) associated with Android Studio. I killed this process, restarted Android Studio, and the problem went away.

disable you developer option in your phone.
Settings > Developer option > Disable
This worked for me, when i tried to use my application without debugging it.

What solved the problem for me was going to:
"Run"->"Attach Debugger to Android process" and then select your process.
You do this in Android Studio.

I had the same issue, fixed it by explicitly selecting desired device in debug configuration. Unfortunately, even after that log sometimes stops when debugger tries to connect. In this case in DDMS perspective find the desired process. It will be highlighted with green bug. Click stop and then debug it again.

This may be old, but for Genymotion's latest update 2.7.1, go to Developer options, if in case you dont know how to open that option, go to About phone and click Build number few times and Developer options will be enabled. Turn ON Developer option, check USB debugging.
Tested on Genymotion 4.4 and up.
Weird solution eh ? But definitely works. Hope it helps.
Happy codings.

In Debug mode Android Studio connects to your Device via socket(:8600). Somehow your socket connection is choked and thus not responding to incoming connections.
Restart Android Studio and your problem will be resolved

"Wait for debugger"in Developer options may have been set to wait your application.Please clear that option and application should run normally.

IOException everytime I try to upload anything to android emulator

I'm using Windows 7 Ultimate 64 bit edition and Eclipse 3.5 with the Android plugin. Every time I create a new project and try to publish it, I get an error like this:
[2010-02-15 22:48:10 - EPG3]Uploading EPG3.apk onto device 'emulator-5554'
[2010-02-15 22:48:15 - EPG3]Failed to upload EPG3.apk on device 'emulator-5554'
[2010-02-15 22:48:15 - EPG3]java.io.IOException: Unable to upload file: timeout
[2010-02-15 22:48:15 - EPG3]Launch canceled!
The emulator is working perfectly, adb can see it, I can even logcat from it, but it can't push or pull anything from it. Nothing appears in logcat to suggest the emulator even received any command. It doesn't matter if I have the Firewall on or off, or if I try invoking adb install to bypass the plugin. Nothing works even with a blank app.
Any ideas?

Not sure if this helps but I had the same exception when I tried uploading a project to the device and fixed it by increasing the value of "adb connection time out (ms)"
PC: (eclipse -> window -> settings -> android -> ddms)
MAC: (eclipse -> preferences -> android -> ddms)
I was pretty pissed at myself that it took me so long to find the setting so I thought I'd share.

I just ran into this error. To resolve it, I deleted my .apk file and built the project again. Voila! Upload works now.

Isnt this a problem with resources loading? Tried all the hello examples without problems, now the first with drawables and now I/O problem as you had.
I think its the reason that in the example they speak of a drawable folder, but in my default project structur there are 3 drawable folders.
Keep on debugging ;)

I got this error about every 30-40 compilations. I don't how, but this solution work for me.
Go to bin/ folder and rename your EPG3-debug.apk file to EPG3.apk (if you are using debug mode) or EPG3-release.apk to EPG3.apk (in Run mode), return to Eclipse, now you can Debug/Run your application. This should "unchoke" this whole situation, so you can make changes in your code and next time Debug/Run program normally (until you get this error once again, then you must repeat this tip).

See this question — Windows 7 and Android don't seem to get on so well initially it seems: Failed to parse the output of 'adb version'?
Are you able to telnet to localhost 5037? That's where the adb server listens for incoming connections from adb clients.

Did you try to add the path of the tools directory to your system PATH as described here ?