Apk can't installed

when I made my apk, I try to install, but don’t install in my Android device

How do you mean, it won’t install? What error message do you get?

Remember you need to turn on developer mode on your Android device. And you have to copy the apk onto the device into a directory you can access from the device, and install it from there. You may also need to over-ride a setting to allow non app-store apks to be installed.