The command line and eclipse methods can be used to achieve APK signature and APK file optimization.

Signature steps:

1. Create a key

2. Use the key in step 1 to sign the APK

 

Implementation of key creation in command line

Keytool.exe in JDK, which is used in the JDK directory

Command line:

Keytool-genkey-alias demo. keystore-keyalg RSA-validity 40000-keystore demo. keystore

Parameter description:

-Genkey generation key

-Alias zhanglei. keystore alias zhanglei. keystore

-Keyalg RSA uses the RSA algorithm to encrypt the signature

-Validity 40000 validity period: 4000 days

-Keystore zhanglei. keystore name

 

Steps:

Use the key created in the command line to sign the APK:

 

Command line:

jarsigner -verbose -keystore zhanglei.keystore -signedjar demo_signed.apk demo.apk demo.keystore

 

 

Parameter description:

-Verbose outputs detailed signature information

-Keystore zhanglei. keystore location

-Signedjar zhanglei_signed.apk demo.apk zhanglei. keystore and key library zhanglei. keystore

 

 

 

The following shows how to create a keystore for eclipse and export the signed APK.

 

The operation directory is as follows:

Right-click Android project à export Android Application à

The steps are as follows:

 

Create a key and set a password:

 

Set some attributes of the keystore, including aliases:

 

Export an APK File

 

When releasing a new version, remember to sign it with the same keystore. As follows:

Select an existing keystore and sign it.

 

Enter the password for submission:

 

Finish:

 

Use the zipalign command to compress and optimize the APK.

 

Command line:

Zipalign-V 4 D: \ androidkeystore \ qtgxw.apk final.apk

Note:

-V [verbose output] Detailed output

 

So far, the key and optimization of the APK have ended.