Ionic empty when running at android

Hello there, i just want to ask something.
I have make a ionic app, in browser is still fine. But when i run at android, my app not show and look like blank. when i rotate screen too the app look like broke. I’m beginner with ionic.

Sorry for my bad english.

How do you run your application? An emulator or a real device?

If it is Android 4.4+ then you can debug with Chrome inspector to see if there’s any console errors.

at real device. i’m debuging using logcat, and there is nothing wrong.
and my device only 4.3.