Adjust Text size in All Android Devices?

Today iam try to solve Text size in all Android Devices, last one week am struggle to solve this issue finally found the solution of this issue.

STEP : 1
   first in   ` res` folder =>  values => dimensions.xml=> create  `dimensions.xml`  file to  `values folder`  in that create like below code depending on textsize

         <?xml version="1.0" encoding="utf-8"?>
           <resources>
               <dimen name="textsize">8sp</dimen>
               <dimen name="text">10sp</dimen>
               <dimen name="comments">7sp</dimen>
           </resources>

STEP : 2
   in java file write this line

    TextView textviewtwo = (TextView)findViewById(R.id.sponsertwo_txt);
   textviewtwo.setText("brought to you by");
   textviewtwo.setTextSize(TypedValue.COMPLEX_UNIT_PX,
getResources().getDimension(R.dimen.textsize));
          // in place of textsize use text and comments what ever we want depending on size. use like text size                  adjust automatically in all devices