Different sdk versions in one app

if you find some deprecated method, and the newest method does not work in your oldest SDK targets use this:

if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){
    if (workStarted){
        button.setText(R.string.mainSignOut);
        button.setBackgroundColor(getResources().getColor(R.color.appRed,null));
        button.setTextColor(getResources().getColor(R.color.appWhite,null));
    }
    else{
        button.setText(R.string.mainSignIn);
        button.setBackgroundColor(getResources().getColor(R.color.appGreen,null));
        button.setTextColor(getResources().getColor(R.color.appBlack,null));
    }
}
else{
    if (workStarted){
        button.setText(R.string.mainSignOut);
        button.setBackgroundColor(getResources().getColor(R.color.appRed));
        button.setTextColor(getResources().getColor(R.color.appWhite));
    }
    else{
        button.setText(R.string.mainSignIn);
        button.setBackgroundColor(getResources().getColor(R.color.appGreen));
        button.setTextColor(getResources().getColor(R.color.appBlack));
    }