1. Create keystore library
Command line input:
keytool -genkeypair -alias crazyit.keystore -keyalg RSA -validity 400 -keystore crazyit.keystoreenter
Enter the keystore password, enter
Enter the password (ie password) again, enter
first and last name, enter
unit name, enter
organization name, enter
city, enter
province, enter
Country code (zh),enter
keystore password, enter
-genkeypair: Specify the generation of digital certificate
-alias: Specify the alias for generating the digital certificate
-keyalg: Specify the algorithm for generating the digital certificate, using the RSA algorithm
-validity: Specify the validity period of the generated digital certificate
-keystore: Specify the storage path of the generated digital certificate
2. Generate unsigned Apk installation package
Right-click the Android project in Eclipse -> Android Tools -> Export Onsigned Application Package..., Eclipse pops up a save file dialog box, click Finish.
3. Use the jarsigner command to sign the unsigned APK installation package
Enter the command in the command line window:
jarsigner -verbose -keystore crazyit keystore -signedjar HelloWorld_crazyit.apk HelloWorld.apk crazyit.keystoreenter, which will ask the user to enter a password
-verbose: Specifies to generate detailed output
-keystore: Specifies the storage path of the digital certificate
-signedjar: The three parameters of this option are the signed APK package, the unsigned APK package, and the alias of the digital certificate
4. Use the zipalign.exe tool to optimize the APK installation package
zippalign.exe is a file organization tool that comes with android. It is used to optimize the apk installation package to improve the interaction efficiency between the android application and the system, and improve the running speed of the application. Command line input:
zipalign -f -v 4 HelloWord_crazyit.apk HelloWorld_crazyit_zip.apk-f: Specifies to force overwriting of existing files
-v: Specifies to generate detailed output
4: Specifies the number of bytes on which the file is sorted, usually specified as 4, that is, sorting based on 32 bits
HelloWorld_crazyit.apk and HelloWorld_crazyit_zip.apk are specified respectively Apk before sorting and apk after sorting