My app run in chrome it was not working in mobile or emulator . how can i solve it

after setting up the background color of the searchBar wdget, it still remains with a lighter blue color within it.When another color is set, it apply those colors as well.Then creates a awful color
see the image here
In above image ,
The above search bar is the one with problem.The below one is custom input field**.See the color difference even though both set to the Colors.transparent **

i am new developer but i tried various methods like
update flutter
reinstall android
and etc
at the end i reinstall window 10
but problem not solved so any one can help me ?
error opening emulator WARNING | Failed to process .ini file C:Usersumar.androidavdINFO | Storing crashdata in: C:UsersumarAppDataLocalTempAndroidEmulatoremu-crash-34.2.13.db, detection is enabled for process: 5472.ini for reading. (2x) WARNING | Failed to process .ini file (null)config.ini for reading. WARNING | Failed to process .ini file (null)config.ini for reading. WARNING | Failed to process .ini file C:Usersumar.androidavdINFO | Storing crashdata in: C:UsersumarAppDataLocalTempAndroidEmulatoremu-crash-34.2.13.db, detection is enabled for process: 5472.ini for reading. WARNING | Failed to process .ini file (null)config.ini for reading. WARNING | Failed to process .ini file (null)config.ini for reading. WARNING | Failed to process .ini file C:Usersumar.androidavdINFO | Storing crashdata in: C:UsersumarAppDataLocalTempAndroidEmulatoremu-crash-34.2.13.db, detection is enabled for process: 5472.ini for reading. WARNING | Failed to process .ini file (null)config.ini for reading. WARNING | Failed to process .ini file (null)config.ini for reading. WARNING | emulator has searched the above paths but found no valid sdk root directory. PANIC: Cannot find AVD system path. Please define ANDROID_SDK_ROOT INFO | Android emulator version 34.2.13.0 (build_id 11772612) (CL:N/A) INFO | AVD INFO | Storing crashdata in: C:UsersumarAppDataLocalTempAndroidEmulatoremu-crash-34.2.13.db, detection is enabled for process: 5472 has path empty INFO | trying to check whether C:UsersumarAppDataLocalAndroidSdk is a valid sdk root

I am using youtube_player_flutter plugin version 9.0.1 to play youtube videos in my app, but it gives following error –

I have the most strange behaviour in Flutter, and I can’t for the life of me figure out why it happens. It is not a critical bug in any way, I am just so annoyed that I can’t find the reason for it!

On compiling a Flutter App to APK and looking in the APK analyser I find that 68% of the size of my app is accounted for by one library libVkLayer_khronos_validation.so

On compiling a Flutter App to APK and looking in the APK analyser I find that 68% of the size of my app is accounted for by one library libVkLayer_khronos_validation.so