how to publish an update to application on the android market?

I already have an application on the android market and now开发者_StackOverflow I want to upload an update to that application. I have made the new application with the same package name, I have incremented the version code and name , I have signed with the same key-store...etc. Now I want to know how to publish an update.

Do I upload the update as a separate application? or how else do I do it?

EDIT: Does the apk name need to be same as the previous version? I mean if my apk name for the original version is abc.apk can my update name be xyz.apk?

You need to upload your new app as the same app as previous version except you need to increment the version number in manifest xml.

So if you have manifest file like following:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"   
          android:versionCode="1"  
    . . .  
</manifest>

You will need following:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"   
          android:versionCode="2"  
    . . .  
</manifest>

@knoguchi is rite.

for that you should:

1) Unpublished app from market(Your published apk can't delete it will be deactive only.)

2) after that in you Latest menifest add

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="1"
android:versionName="1.0"
. . .
</manifest>

You will need following:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="2"
android:versionName="1.1"
. . .
</manifest>

3) And sign again your apk from eclipde->Android tools->Export singed application package-> sign it->

4) Upload that Apk to market.

Hope it will help.

Might be too late but:
Once you're logged into the Android market for publishers, click on your app under "All Android Market listings", and click on the tab "APK files".
Then you need to deactivate the current published apk version (click on "deactivate"), upload your new APK (click on "upload APK"), activate it (click on "activate"), and click on "save".
You don't need to unpublish-publish at all (if all you want to do is update your apk).

So, you don't need to upload your app as a new app, you just update the existing one.

Note: You can't delete the older versions of your apk, they're staying there for you to be able to reactivate one of them is need be.

To upload an update first of all make changes in Android Manifest as described in other answers. Then go to Home screen of Google Play Developer Console. Click on app whose update you have to upload in "All Applications" section. On left panel list, there will be options for APK, Store Listing, Pricing and Distribution,etc. Go to APK section. There in center you will find button "Upload new APK to Production". Thats It! Upload your new version of App and click Publish.