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Generate api key for google map while publishing the app

I am trying to do dis more than an hour but unable to find the apt solution.
My app is ready, so i am trying to export it using signed application option in eclipse IDE.
the apk file is getting generated
But the problem is the google map inside map whose API Key was generated using default debug keystore is not working.
So i need to create a new API key by creating a new keystore.
How does it go?
please explain

using your new keystore find the SHA1 key from eclipse and create a new API key for google map.

You don't need another API key anymore, you just have to add the SHA1 finger print of the keystore you use for creating the signed APK to the existing API key:
Supposing you have created your API key in the API Console, go there again and click the 'Edit allowed Android Applications' button below your already existing API Key.
There, add a new line with the SHA1 finger print of the keystore you used to create the signed APK and the package name of your app (it's explained anyways when you hit that button) and you're done.

The Eclipse debug key for signing your application can be found in the userhome/.android/debug.keystore file.
To create the SHA-1 for your debug keystore you use the keytool command from your JDK installation pointing to the debug.keystore file.
keytool -list -v -alias androiddebugkey \
-keystore <path_to_debug_keystore>debug.keystore \
-storepass android -keypass android
Copy the SHA-1 output, as you need this later.

In the console, You need to create a new Android key in pulbic api acccess.
You need to get the SHA1
keytool -list -v -keystore mystore.keystore

You can use this command to get SHA-1 to get Api-Key. Here's link
keytool -list -keystore your_keystore_name
If you don't want to regenerate or re assign the key, then go to Google APi console and Enable the Api-Key for all application either signed or unsigned

Cannot see Google Maps in signed application

I make use of Google Maps Android V2 in my application. When I run my app without signing things are perfect but when I sign my app I cannot see maps. I get lattitude and longitude but I cannot see my maps. All I could see is some blank white space. Please Help. I need to release the project soon..
EDIT
thanks guys i missed the part where I should sign with the app keystore i tried some commands but they didnt work. Tried these
1. C:\Program Files\Java\jdk1.6.0_19\bin>keytool.exe -list -alias compny -keystore
"C:\Users\PC8\Desktop\Sign Key" -storepass compny -keypass compny
and got this error
keytool error: java.lang.Exception: Keystore file exists, but is empty: C:\Users
\PC8\Desktop\Sign Key
2. C:\Program Files\Java\jdk1.6.0_19\bin>keytool -exportcert -alias androiddebugkey
-keystore "C:\Users\PC8\Desktop\Sign Key" -list -v
and got this error
keytool error: java.lang.Exception: Keystore file exists, but is empty: C:\Users
\PC8\Desktop\Sign Key
java.lang.Exception: Keystore file exists, but is empty: C:\Users\PC8\De
sktop\Sign Key
at sun.security.tools.KeyTool.doCommands(KeyTool.java:559)
at sun.security.tools.KeyTool.run(KeyTool.java:172)
at sun.security.tools.KeyTool.main(KeyTool.java:166)

This problem is because of map api key.
You need to sign your app and find .keystore for signed app. Right click on project Android Tools->Export Signed application pachage->next -> create new keystore then use this new keysore to find new SHA1 Now find new API key for your app. And replace the old map API key with this in manifest.
https://developers.google.com/console/help/new/#installedapplications
Next time whenever you want new signed app just use this keystore no need to create new again.

You are now probably trying to work with debug api-key which generated with debug.keystore file. You will have a private keystore file after signing your app. With this keystore file, you should get api-key which is private and named release api-key. Add this api-key to your projects meta-data then it will work.

What is Release key for Android Map v2? How it would be generated?

I am confused from the thing which I have experienced
I use Google Map API v2 for my application. I have use the map
fragment to display the map. It works fine on many of devices above to
2.2. It works perfectly when running direct to device but when I export application to a *.apk and then install into the device, run
the application, It only show white screen.....
I have search for this problem, the solution comes that use API KEY with the signing of apk. I dont know how to sign the apk? And what is the release key?
Please help me I am stuck from last 2 days. Thanks in advance..
Facing this error..
UPDATE :
My mistake is that I have not used the SHA fingerprint which is
generated when apk is created. It is displayed first time in the console
and next time on to the apk export screen.
Here are screen shots of the same
FIRST TIME OF APK CREATION :
NEXT TIME :
Thanks everyone for your valuable suggestions and responses. Thanks.

You need to do the following things to get your Maps Visible for both Debug Mode and release mode
-1 Add debug key to package combination at Google API console
-2 Add release key to page combination at Google API Console
Note : you need to add at lease 2 combination to get your maps visible when you are testing and when you generate *.apk file.
What you are missing right now is not adding the release key to application package combination to API console add this and after that do the following:
replace your debug map key with release key and generate your *.apk and install aplication to your device you will get your maps
there are several Tutorial available on net i would to suggest you the following one
Google Maps
To Generate the Release key do the following steps
Open CMD (in Windows) terminal (in Linux?MAC os) find the path to your jdk dir and then to bin like following:
C:\path-to-jdk\jdk1.7.0_07\bin>keytool -v -list -alias tt -keystore path-to-keystore -storepass password -keypass passowrd
for me the path is following for Jdk/bin and that for key store
C:\Program Files\Java\jdk1.7.0_07\bin>keytool -v -list -alias tt -keystore D:\ke
yStore -storepass password -keypass password
you need to give the following things of your own
-1 path to jdk
-2 path to keystore
-3 keystore passoword
-4 keypass password

You can generate api key here: https://code.google.com/apis/console/‎
About release key, it's this article: http://developer.android.com/tools/publishing/app-signing.html But this is not required, default sign by debug.keystore. Below nice tutorial about this.
Here is official Google tutorial about map v.2: https://developers.google.com/maps/documentation/android/start

I have a good tutorial regarding this, each step is explained via screenshot
http://androidstudies.wordpress.com/2013/05/30/view-map-in-you-android-applicatiopn/
actually Api key is for security purpose so that no fake requests are sent to google server(some times hackers do such things)

There are two keys.Debug and release key. Debug key works for unsigned apk and release key works for signed apk. If you signed your apk by means of debug key, then your map looks blank.
So if you export your application, use release key.
Release key procedure, you can follow here.
Google Map Android API v2 can't display map in play store application

Follow this step by step process:
step1:Create key store
C:\Program Files\Java\jdk1.7.0_21\bin>keytool -genkey -v -keystore keystorename.ke
ystore -alias pwd -keyalg RSA -keysize 2048 -validity 10000
step2: convert all required android projects to ant project to run 'ant release'
E:\myworkspace\sample\myproject>android update project --path .
step3:Run ant release
E:\myworkspace\sample\myproject>ant release
Step 4: Sign apk
E:\myworkspace\sample\myproject>jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore path\to\keystore path\to\generate\unsigned.apk pwd
Step 5: verify signed jar
E:\myworkspace\sample\myproject>jarsigner -verify -verbose -certs path\to\generate\unsigned.apk
Step 6: align apk
E:\myworkspace\sample\myproject>zipalign -v 4 path\to\generate\unsigned.apk "path\to\final\released\final.apk"
Refer this link: http://developer.android.com/tools/publishing/app-signing.html

Google maps v2 doesn't showing after publishing in play market

i have some problem, my app works fine, but when i load it in Play market, maps does not works correctly. I make next:
Get SHA1 keytool -list -v -keystore C:\User\Name/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android
In Google console i create API KEY. SHA1;com.kostya.app
Rigth click on project - Android tools - Export signed application packuage
Create new keystore and new *.apk file.
Load it into market.
Where is my mistake? I read this article. Together we can create nice tutorial how to sign app using google maps v2. How to test application at once after loading in play market, without weithing some ours.

When your are creating keystore for creating signed apk you have to do this.
change debug.keystore to your created keystore
change alias name to your project name
set the password the same like in your created keystore (not android as in debug mode)
keytool -list -v -keystore ~/.android/ YOUR_KEYSTORE -alias YOUR_PROJECT_NAME
more help find here

after publishing the app on play store.
on Google Play Console
Goto:
Release Management >App Signing
from "App signing certificate" copy SHA1 and paste it on Google cloud platform API console.

You have to create a production keystore, you should not use the debug.keystore.
Check out the documentation.

Just Add the apikey to debug>res>values>google_maps_api.xml
add in release>res>values>google_maps_api.xml files.

Just generate SHA1 using
keytool -list -v -keystore mystore.keystore
go and add the package name and SHA1 fingerprint to the already generated

I used Android studio to generate the release keystore. After tried many ways for two days I finally got this to work. The problem is that when generating signed APK in Android Studio either by choosing the existing keystore or creating a new one, the default format for the keystore file is ".jks". That is the problem. After I changed that to ".keystore" and generated the release apk, and then copied the SHA1 into google console. The map can finally be showing.

Map tile not loading only with release certifcate android?

I have checked a lot of questions around map tiles not loading on android device. I have not been able to fix the same error I have.
I am able to test on both emulator and device my mapsview in my application with the debug key. It works absolutely fine. I had generated a maps api key for my debug certificate.
I then created a maps api key for my release certificate with its MD5. I have added that to my maps view and now the application is not working.
I have added android internet permission in the correct place in manifest file.
I have correctly generated the MD5 finger print as I did for debug key.
I have only one mapview in my app so I have just changed that api key in the layout xml.
Only difference in generating key for debug and release is this: In the command options for keytool for the release certificate I was asked passsword only once which I presume is the store pass. my key pass was never asked (actually they are the same)
I generated debug keystore MD5 like this
$ keytool -list -alias androiddebugkey \
-keystore <path_to_debug_keystore>.keystore \
-storepass android -keypass android
I created the release key MD5 like this
$ keytool -list -alias myalias_name -keystore "mykeystorepath"
I have also tested the app with the android store still no luck. What am I missing? Any help is greatly appreciated, thanks guys!

use eclipse for generating the key and exporting, also don't rely on the DEBUG variable( Android: automatically choose debug/release Maps api key? ) to switch at runtime the keys because that's broken at the moment, you have to export the app, get the md5, get the key based on this new md5, switch the map key, reexport
edit:
important steps of https://developers.google.com/maps/documentation/android/mapkey
1) $ keytool -list -alias alias_name -keystore my-release-key.keystore (NOT DEBUG KEY)
2) https://developers.google.com/android/maps-api-signup
3) update code with new key
4) clean project & build (important to clean, eclipse doesn't always do it)
5) export with eclipse

Ok all, here is how silly it was. All was fine except for the fact that I placed the key in a layout file that I was not using. Probably I was out of my mind. So quickly
The maps application will work with release key even if you just export signed application. It is not necessary that the application be put in Android store for it to work. There are some misleading comments in stack overflow that state this.
The keytool will ask for password of the keystore and it will use the same to unlock the alias key too. Only if it is different it will ask again.
The maps application with release key will work with emulator too. Just rmbr to use install adb ""