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;

     }

 }