Android版本和API Level对应关系

http://developer.android.com/intl/zh-cn/guide/topics/manifest/uses-sdk-element.html

The table below specifies the API Level supported by each version of the Android platform. For information about the relative numbers of devices that are running each version, see the Platform Versions dashboards page.

Platform Version	API Level	VERSION_CODE	Notes
Android 6.0	23	`M`	API Changes
Android 5.1	22	`LOLLIPOP_MR1`	Platform Highlights
Android 5.0	21	`LOLLIPOP`	Platform Highlights
Android 4.4W	20	`KITKAT_WATCH`	KitKat for Wearables Only
Android 4.4	19	`KITKAT`	Platform Highlights
Android 4.3	18	`JELLY_BEAN_MR2`	Platform Highlights
Android 4.2, 4.2.2	17	`JELLY_BEAN_MR1`	Platform Highlights
Android 4.1, 4.1.1	16	`JELLY_BEAN`	Platform Highlights
Android 4.0.3, 4.0.4	15	`ICE_CREAM_SANDWICH_MR1`	Platform Highlights
Android 4.0, 4.0.1, 4.0.2	14	`ICE_CREAM_SANDWICH`	Platform Highlights
Android 3.2	13	`HONEYCOMB_MR2`
Android 3.1.x	12	`HONEYCOMB_MR1`	Platform Highlights
Android 3.0.x	11	`HONEYCOMB`	Platform Highlights
Android 2.3.4 Android 2.3.3	10	`GINGERBREAD_MR1`	Platform Highlights
Android 2.3.2 Android 2.3.1 Android 2.3	9	`GINGERBREAD`	Platform Highlights
Android 2.2.x	8	`FROYO`	Platform Highlights
Android 2.1.x	7	`ECLAIR_MR1`	Platform Highlights
Android 2.0.1	6	`ECLAIR_0_1`
Android 2.0	5	`ECLAIR`
Android 1.6	4	`DONUT`	Platform Highlights
Android 1.5	3	`CUPCAKE`	Platform Highlights
Android 1.1	2	`BASE_1_1`
Android 1.0	1	`BASE`