dp px 互转工具类

public class DensityUtils {
    public static int dpToPx(Context context,int dp){
        float density = context.getResources().getDisplayMetrics().density;
        return (int) (dp*density+0.5f);
    }

    public static int pxToDp(Context context,int px){
        float density = context.getResources().getDisplayMetrics().density;
        return (int) (px/density+0.5f);
    }
}