android 版本和 api level 的对应关系

Platform Version	API Level	VERSION_CODE	Notes
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`