模拟器和电话代码运行良好，但当 APK 发布时它不起作用

Question

i working on a flutter app. and when it run it goes well. on the mobile phone and the emulater.here is the screenshot, emulator work fine but after i create an APK. it shows only white screen. i cant show the code now. but can you show me the wrong. after install APK screenshot a

Answer 1

You need to set internet permission in your android manifest for it to work

To do that, go to -- your-project\\android\\app\\src\\main\\AndroidManifest.xml and paste this code <uses-permission android:name="android.permission.INTERNET"/>

Answer 2

This might be an issue of build-mode, release/debug. if the apk was built in release mode and there's an issue let's say Null check error A grey screen will be used to hide it ie in release mode. This wouldn't be the case for debug mode.

So I suggest you check the logs for any error, exceptions or error you may have ignored in logs.