dp和px转换

public int Dp2Px(Context context, float dp) {      final float scale = context.getResources().getDisplayMetrics().density;      return (int) (dp * scale + 0.5f);  }  public int Px2Dp(Context context, float px) {      final float scale = context.getResources().getDisplayMetrics().density;      return (int) (px / scale + 0.5f);  
}  
原文：http://outofmemory.cn/code-snippet/2910/Android--xiangsu-px-dp-zhuanhua