Get Android API level of phone currently running my application [duplicate]

Check android.os.Build.VERSION, which is a static class that holds various pieces of information about the Android OS a system is running.

If you care about all versions possible (back to original Android version), as in minSdkVersion is set to anything less than 4, then you will have to use android.os.Build.VERSION.SDK, which is a String that can be converted to the integer of the release.

If you are on at least API version 4 (Android 1.6 Donut), the current suggested way of getting the API level would be to check the value of android.os.Build.VERSION.SDK_INT, which is an integer.

In either case, the integer you get maps to an enum value from all those defined in android.os.Build.VERSION_CODES:

SDK_INT value        Build.VERSION_CODES        Human Version Name           1                  BASE                      Android 1.0 (no codename)    2                  BASE_1_1                  Android 1.1 Petit Four    3                  CUPCAKE                   Android 1.5 Cupcake    4                  DONUT                     Android 1.6 Donut    5                  ECLAIR                    Android 2.0 Eclair    6                  ECLAIR_0_1                Android 2.0.1 Eclair                      7                  ECLAIR_MR1                Android 2.1 Eclair    8                  FROYO                     Android 2.2 Froyo    9                  GINGERBREAD               Android 2.3 Gingerbread   10                  GINGERBREAD_MR1           Android 2.3.3 Gingerbread   11                  HONEYCOMB                 Android 3.0 Honeycomb   12                  HONEYCOMB_MR1             Android 3.1 Honeycomb   13                  HONEYCOMB_MR2             Android 3.2 Honeycomb   14                  ICE_CREAM_SANDWICH        Android 4.0 Ice Cream Sandwich   15                  ICE_CREAM_SANDWICH_MR1    Android 4.0.3 Ice Cream Sandwich   16                  JELLY_BEAN                Android 4.1 Jellybean   17                  JELLY_BEAN_MR1            Android 4.2 Jellybean   18                  JELLY_BEAN_MR2            Android 4.3 Jellybean   19                  KITKAT                    Android 4.4 KitKat   20                  KITKAT_WATCH              Android 4.4 KitKat Watch   21                  LOLLIPOP                  Android 5.0 Lollipop   22                  LOLLIPOP_MR1              Android 5.1 Lollipop   23                  M                         Android 6.0 Marshmallow   24                  N                         Android 7.0 Nougat   25                  N_MR1                     Android 7.1.1 Nougat   26                  O                         Android 8.0 Oreo   27                  O_MR1                     Android 8 Oreo MR1   28                  P                         Android 9 Pie   29                  Q                         Android 10  10000                CUR_DEVELOPMENT           Current Development Version

Note that some time between Android N and O, the Android SDK began aliasing CUR_DEVELOPMENT and the developer preview of the next major Android version to be the same SDK_INT value (10000).

Integer.valueOf(android.os.Build.VERSION.SDK);

Values are:

Platform Version   API LevelAndroid 9.0        28Android 8.1        27Android 8.0        26Android 7.1        25Android 7.0        24Android 6.0        23Android 5.1        22Android 5.0        21Android 4.4W       20Android 4.4        19Android 4.3        18Android 4.2        17Android 4.1        16Android 4.0.3      15Android 4.0        14Android 3.2        13Android 3.1        12Android 3.0        11Android 2.3.3      10Android 2.3        9Android 2.2        8Android 2.1        7Android 2.0.1      6Android 2.0        5Android 1.6        4Android 1.5        3Android 1.1        2Android 1.0        1

CAUTION: don't use android.os.Build.VERSION.SDK_INT if <uses-sdk android:minSdkVersion="3" />.

You will get exception on all devices with Android 1.5 and lower because Build.VERSION.SDK_INT is since SDK 4 (Donut 1.6).

android.os.Build.VERSION.SDK_INT

Here you can find the possible values: VERSION_CODES.