Different resolution support android

Question

Edited Question:

Mobile Resolution:
I would like to design different screen dpi like following resolutions.
320x480,
48

Answer 1

First your application design for one resolution .

example : suppose your mobile resolution 380*480

       mobile screen width:380

       textView size is 80dp   
       Assume : if width is 380dp then 100 % then

               textview width 80dp then how many %(per).

            ower answer is: 25 %

find screen size programmatically using belove formula

    DisplayMetric  displaymetrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
    ScreenHeight = displaymetrics.heightPixels;
    ScreenWidth = displaymetrics.widthPixels;
        txt_height = (int)((ScreenHeight*14.58)/100);
    txt_width = (int)((ScreenWidth*37.5)/100);


    LinearLayout.LayoutParams normal_param = new LinearLayout.LayoutParams(txt_height ,txt_width );

    txt_Name.setLayoutParams(normal_param);