1. First find the location of the SDK
2. After finding the SDK on the computer, click ->bulid-tools
3. Click 23.0.3 and copy the apk to be optimized to the directory of 23.0.3 (such as aa.apk)
4. After returning to 23.0.3, hold down shift, right-click to open the command line window, enter ->zipalign -v 4 aa.apk bb.apk
Remind the optimization success after completion
5. You can see bb.apk in the 23.0.3 directory
