How can I check the system version of Android?

Does anyone know how can I check the system version (e.g. 1.0, 2.2, etc.) programatically?

Example how to use it:

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD) {
     // only for gingerbread and newer versions
}

Check android.os.Build.VERSION.

CODENAME: The current development codename, or the string "REL" if this is a release build.

INCREMENTAL: The internal value used by the underlying source control to represent this build.

RELEASE: The user-visible version string.

Build.Version is the place go to for this data. Here is a code snippet for how to format it.

public String getAndroidVersion() {
    String release = Build.VERSION.RELEASE;
    int sdkVersion = Build.VERSION.SDK_INT;
    return "Android SDK: " + sdkVersion + " (" + release +")";
}

Looks like this "Android SDK: 19 (4.4.4)"

For checking device version which is greater than or equal to Marshmallow ,use this code.

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M){

    }

for ckecking others just change the VERSION_CODES like,
K for kitkat,
L for loolipop N for Nougat and so on...

Build.VERSION.RELEASE;

That will give you the actual numbers of your version; aka 2.3.3 or 2.2. The problem with using Build.VERSION.SDK_INT is if you have a rooted phone or custom rom, you could have a none standard OS (aka my android is running 2.3.5) and that will return a null when using Build.VERSION.SDK_INT so Build.VERSION.RELEASE will work no matter what!

How can I check the system version of Android?

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