How to sign my already made android app/.apk file

Question

I have made an Android Live wallpaper application using a software and the app is running perfectly on my device so I thought about uploading it to Playstore.When I uploaded my app it game me following error :

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"You uploaded an APK signed with a certificate that expires too soon. You need to sign your APK with a certificate that expires farther into the future."

Now how I can sign my certificate again ? Please I need detailed tutorial !

Answer 1

您必须创建一个新的签名密钥，该密钥将在25年左右到期，并为您的应用程序签署该密钥

Answer 2

to generate map key:=

go to C:\\users....android. keytool -list -alias androiddebugkey -keystore C:\\users....android\\debug.keystore -storepass android -keypass android MD5 finger print: 79:9F:B9:2B:F0:51:C8:48:2E:39:5B:72:AB:42:24:91 map key: 0lujtKtuh8x_MfEUSN5OpCj6HVCxX9lvBDgCT2w

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to generate certificate:=

keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000 password1- ...,123

password2- ....,1234

previous map key generated : 0Vd9Hpw3AaaLfuaYgC8btoNu8OkuZe4bPXD9oPg

Answer 3

You need to:

• Create a release.keystore (it not already done):
  keytool -genkey -v -keystore release.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000

• Remove the old signature:
  zip -d foo.apk META-INF/\\*

• Sign with the new key:
  jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore release.keystore my_application.apk alias_name

• Verify the signature:
  jarsigner -verify -verbose -certs my_application.apk