px dp 互转

 1 /**
 2  *
 3  *   px   dip 转换
 4  */
 5 public class DensityUtil {
 6 
 7     /**
 8      *   根据手机分辨率  dip 转 px
 9      */
10     static  public  int dip2px(Context context,float dpValue){
11         final  float scale = context.getResources().getDisplayMetrics().density;
12         return  (int) (dpValue*scale+0.5f);
13     }
14     /**
15      *   根据手机分辨率  px 转 dip
16      */
17     static  public  int px2dip(Context context, float pxValue){
18         final  float scale = context.getResources().getDisplayMetrics().density;
19         return  (int)(pxValue/scale+0.5f);
20     }
21 }