Android program released

Android requires allProgramA signature is required. Otherwise, the program will not be installed. During our development process, ADT uses debug keystore and sets it in preference-> Android-> buid. By default, the debug keystore is valid for one year. If you developed an android program from a year ago, the debug keystore may expire and you cannot generate an APK file. After I adjusted the system time, the following error occurs. Now you only need to delete the debug keystore, and the system will generate a private key valid for one year for you.

[19:47:03-helloworld] Error generating final archive: Debug certificate expired on 10-6-18 pm!

When you release, you can right-click the project-> Android tools-> export signed Android package to generate a signed package. In this process, if you do not have your own private key, ADT will automatically call keytool to generate it for you. Please protect your private key; otherwise, your signature program will be attacked.

Pay attention to the version number before release, in manifest. XML contains two fields: Android: versioncode = "1" and Android: versionname = "1.0". The former is used by a program or Android and increases by 1. The latter is for the user to see, here you can use the main version number build lamp string.

 

See: http://developer.android.com/guide/publishing/app-signing.html