DensityUtil.java

package cn.edu.njupt.allgo.util;

import android.content.Context;

public class DensityUtil {
	
	public static int dip2px(Context context , float dpValue)
	{
	      final float scale = context.getResources().getDisplayMetrics().density;
	        
	      return (int)(dpValue*scale+0.5f);

	}

	public static int px2dp(Context context , float pxValue)
	{
		final float scale = context.getResources().getDisplayMetrics().density;
	        
	      return (int)(pxValue/scale+0.5f);

	}
}