Build file apk to submit

Right click to project, Android Tools, Export Singed Appilaction Package.

Press Next.

Choose Create new keystore, Browse to save disc, name it key, enter password, Next. File key use to Update app, if lose this file, there no way to update app on Play Store.

Enter alias, password, validity year up to 1000, name, leave 4 next fields blank, country code, Next.

Choose disc save file apk, should be same position with file key, Finish.

Wait a minute and you have apk file ready to upload.

For Android Studio, choose Build, Generate Signed Apk, Create new keystore, fill in the blanks, Next.

Fill in the blanks, press OK, save file, finish.