The corresponding relationship between Android system name, version, API level

Transferred from: http://source.android.com/source/build-numbers.html

Level

Code name	Version	API
Lollipop	5.1	API level 22
Lollipop	5.0	API level 21
KitKat	4.4-4.4.4	API level 19
Jelly Bean	4.3.x	API level 18
Jelly Bean	4.2.x	API level 17
Jelly Bean	4.1.x	API Level 16
Ice Cream Sandwich	4.0.3-4.0.4	API level, NDK 8
Ice Cream Sandwich	4.0.1-4.0.2	API level, NDK 7
Honeycomb	3.2.x	API level 13
Honeycomb	3.1	API Level 6, NDK
Honeycomb	3.0	API level 11
Gingerbread	2.3.3-2.3.7	API Level 10
Gingerbread	2.3-2.3.2	API Level 9, NDK 5
Froyo	2.2.x	API Level 8, NDK 4
Eclair	2.1	API Level 7, NDK 3
Eclair	2.0.1	API Level 6
Eclair	2.0	API Level 5
Donut	1.6	API level 4, NDK 2
Cupcake	1.5	API Level 3, NDK 1
(No code name)	1.1	API Level 2
(No code name)	1.0	API Level 1

The corresponding relationship between Android system name, version, API level