I open database in android with a 20mb size, and it succeeds.but the same code can not work on ios, for ios only permit 5mb in uiwebview.
Is there any way to make this same code work both on android and ios? or create a 20mb db in uiwebview?
The short answer is no - I believe iOS should prompt the user when you're opening a larger database, but if it isn't doing that, there's no way to work around it (without writing a native plugin).