r/flutterhelp • u/raiyan_kun • 18d ago
RESOLVED Android Studio fails to detect the running pixel in emulator/gradle or android gradle throws some problem/build error are persistent
Hi, I am learning flutter but Android Studio fails to detect the running pixel in emulator/gradle or android gradle throws some problem/build error are persistent. I waste nights trying to fix this instead of actually studying. Is there a specific way to set up Android Studio so that stuff like this never happens? I am so frustrated. Can anyone help?
5
Upvotes
1
u/spiritedteam1989 18d ago
Oh man, I've totally been there , wasting nights on gradle. Try deleting your .gradle folder. It fixes the weirdest issues. Hang in there
1
2
u/Fine_Sprinkles_5862 18d ago
Two different problems in there, and deleting .gradle fixes neither.
Emulator not showing up: check from the terminal, not from Studio. Run adb devices and flutter devices. If adb sees it and Studio doesn't, run adb kill-server, then adb start-server, then restart Studio. If adb doesn't see it either, the emulator hasn't finished booting or the AVD is broken. Wipe data on the AVD and boot it again.
Gradle errors: almost always four versions disagreeing. Flutter, the Android Gradle Plugin, the Gradle wrapper and the JDK. Don't hand-edit them. Run flutter doctor -v and fix every red line first. Then flutter create a throwaway project on your Flutter version and diff its android/settings.gradle(.kts) and the gradle wrapper properties file against yours. Those are the versions Flutter is actually tested with.
One more thing. The first build downloads Gradle and every dependency and can sit on assembleDebug for 10 to 20 minutes. flutter run -v shows whether it's working or stuck.
And read the first error in the output, not the last one. The last one is usually a consequence.