问题
In Android there are a collection of Environment paths available at Android.OS.Environment. However, when keeping cross platform capabilities in mind, I want to store pictures in a pictures folder and so thought to use System.Environment.GetFolderPath instead. However, my question is where these all point to in an Android environment. Can I get a useful pictures folder from the following?
string path = Environment.GetFolderPath (Environment.SpecialFolder.MyPictures);
回答1:
After stepping through some code, I've summarised the locations given by Xamarin Android for each of the different System.Environment variables below. I don't have an iOS project available, but if anyone could post the iOS equivalents I'd be grateful.
ApplicationData "/data/data/ProjectName.ProjectName/files/.config"
CommonApplicationData "/usr/share"
CommonProgramFiles ""
Cookies ""
Desktop "/data/data/ProjectName.ProjectName/files/Desktop"
DesktopDirectory "/data/data/ProjectName.ProjectName/files/Desktop"
Favorites ""
History ""
InternetCache ""
LocalApplicationData "/data/data/ProjectName.ProjectName/files/.local/share"
MyComputer ""
MyDocuments "/data/data/ProjectName.ProjectName/files"
MyMusic "/data/data/ProjectName.ProjectName/files/Music"
MyPictures "/data/data/ProjectName.ProjectName/files/Pictures"
MyVideos "/data/data/ProjectName.ProjectName/files/Videos"
Personal "/data/data/ProjectName.ProjectName/files"
ProgramFiles ""
Programs ""
Recent ""
SendTo ""
StartMenu ""
Startup ""
System ""
Templates "/data/data/ProjectName.ProjectName/files/Templates"
回答2:
Turns out this isn't available in iOS or Windows phone.
http://docs.xamarin.com/guides/cross-platform/application_fundamentals/building_cross_platform_applications/part_4_-_platform_divergence_abstraction_divergent_implementation (see section 3.1.4).
来源：https://stackoverflow.com/questions/16918307/monodroid-environment-variables