The creation and use of the Android signature tool

The cmd command is located in C:\Windows\System32\cmd.exe.

Use the SET command to view all environment variables and their corresponding values, and use echo%SystemRoot% to view the values of the environment variables.

The Android Signature tool is located in D:\Java\jdk1.8.0_45\bin\keytool.exe.

1. Create a signature file

At the command line, enter

Keytool-genkey-v-keystore debug.keystore-alias androiddebugkey-storepass android-keypass android-keyalg Rsa-validi Ty 14000

To create a signature tool. If you want to use this signature file as eclipse by default, ensure that the password is android,alias to Androiddebugkey.

2. Sign an unsigned apk

The signature command is located in D:\Java\jdk1.8.0_45\bin\jarsigner.exe. Use the Android Tools->export Unsigned application package to export an unsigned apk.

Where-verbose can see the details of the signature, the-signedjar parameter specifies the name of the file after the signature

3. Use Zipalign to optimize the signed apk

At the command line, type

D:\Android\sdk\build-tools\21.1.2\zipalign-v 4 dbtest_signed.apk dbtest_signed_align.apk

-V indicates output details, 4 provides 32-bit alignment

The creation and use of the Android signature tool