How can I check API version?

Question

I want use bluetooth low energy (BLE).
In

API

lower than 21 I should use

startlescan()

and in API 21 I should use

startscan()

and its scan callback that is not for API less than 21.

how can I separate those code to have both in my app?

The error:

I want something like this:

if(api < 21) startlescan();

if(api >= 21) startscan();

Answer 1

You can use below code:-

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
    startlescan();
}
else{

    startscan();
}

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