2.eclipse has signature function: right-click the project name->; Android tools-> Export the signed application package ... 3. When releasing the next version of apk, you must use the same key to sign it, otherwise you will be prompted that the signature is inconsistent. If you encounter such a prompt, you need to check the fingerprint information of the key in the key store you are using. You can use the following command: keytool-list-v-keystore signature _ mantapps. Store displays the following results: keytool-list-v-keystore signature _ mantapps. Store input. Keystore password: keystore type: JKS keystore provider: SUN Your keystore contains 1. Enter the alias: * * * * * * * * * * * * *