Android版本和API Level对应关系

Name	API Level	VERSION_CODE
Android 7.1.1	25	Nougat
Android 7.0	24	Nougat
Android 6.0	23	Marshmallow
Android 5.1	22	Lollipop_MR1
Android 5.0	21	Lollipop
Android 4.4W	20	KitKat Wear
Android 4.4	19	KitKat
Android 4.3	18	JellyBean_MR2
Android 4.2，4.2.2	17	JellyBean_MR1
Android 4.1，4.1.1	16	JellyBean
Android 4.0.3，4.0.4	15	IceCreamSandWich_MR1
Android 4.0，4.0.1，4.0.2	14	IceCreamSandWich
Android 3.2	13	HoneyComb_MR2
Android 3.1.X	12	HoneyComb_MR1
Android 3.0.X	11	HoneyComb
Android 2.3.4，2.3.3	10	GingerBread_MR1
Android 2.3.2，2.3.1，2.3	9	GingerBread
Android 2.2.X	8	Froyo
Android 2.1.X	7	Eclair_MR1
Android 2.0.1	6	Eclair_0_1
Android 2.0	5	Eclair
Android 1.6	4	Donut
Android 1.5	3	CupCake
Android 1.1	2	Base_1_1
Android 1.0	1	Base