Fresco支援的URI

特別注意：Fresco 不支援相對路徑的URI. 所有的URI都必須是絕對路徑，並且帶上該URI的格式。

Type	Scheme	Example
on network	http://, https://	HttpURLConnection
on device	file://	FileInputStream
Content provider	content://	ContentResolver
Asset	asset://	AssetManager
Resource	res:// as in res://12345	resources.openRawResource
Data in URI	data:mime/type;	-----------------