Android获取窗体信息的Util方法

 package com.wangyi.tools;

 import android.app.Activity;
 import android.util.DisplayMetrics;

 public class DisplayUtils {

     private static DisplayUtils instance;
     private Activity mActivity;
     private DisplayUtils(Activity mActivity){
         this.mActivity=mActivity;
     }
     public static DisplayUtils getInstance(Activity mActivity){
         if(instance==null){
             instance=new DisplayUtils(mActivity);
         }
         return instance;
     }
     public final  int[] getScreenSize(){
         int[] size=new int[2];
         DisplayMetrics dm = new DisplayMetrics();
         mActivity.getWindowManager().getDefaultDisplay().getMetrics(dm);
         size[0]=dm.widthPixels;
         size[1]=dm.heightPixels;
         return size;
     }
     public final static int getWindowWidth(Activity mActivity) {
         DisplayMetrics dm = new DisplayMetrics();
         mActivity.getWindowManager().getDefaultDisplay().getMetrics(dm);
         return dm.widthPixels;
     }

     public final static int getWindowHeight(Activity mActivity) {
         DisplayMetrics dm = new DisplayMetrics();
         mActivity.getWindowManager().getDefaultDisplay().getMetrics(dm);
         return dm.heightPixels;
     }
 }