How to remove “Call requires API level” error?

Add the line @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH) above the method signature, where Build.VERSION_CODES.ICE_CREAM_SANDWICH evaluates to 14, the API version code for Ice Cream Sandwich.

Like so:

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public void yourMethod() {
    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        getActionBar().setHomeButtonEnabled(false);
    }
}