<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.telephony.TelephonyManager;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.List;
import java.util.UUID;

public class DeviceUtils {
   protected static final String TAG = DeviceUtils.class.getSimpleName();

   // 移动  
   private static final int CHINA_MOBILE = 1;
   // 联通 
   private static final int UNICOM = 2;
   // 电信 
   private static final int TELECOMMUNICATIONS = 3;
   // 失败  
   private static final int ERROR = 0;

   /**
    * 手机唯一标识
    * 
    * @param context
    * @return
    */
   public static String getDeviceId(Context context) {
      final TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
      final String tmDevice, tmSerial, androidId;
      tmDevice = "" + tm.getDeviceId();
      tmSerial = "" + tm.getSimSerialNumber();
      androidId = "" + android.provider.Settings.Secure.getString(context.getContentResolver(), android.provider.Settings.Secure.ANDROID_ID);
      UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
      String uniqueId = deviceUuid.toString();
      return uniqueId;
   }

   /**
    * 手机MAC地址
    * @param context
    * @return
    */
   public static String getMacAddressInfo(Context context) {
      WifiManager manager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
      WifiInfo info = manager.getConnectionInfo();
      return info.getMacAddress();
   }

   /**
    * TelephonyManager对象
    * @param context
    * @return
    */
   private static TelephonyManager getTelphoneManager(Context context) {
      return (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
   }

   /**
    * DeviceId
    * @param context
    * @return
    */
   public static String getDeviceID(Context context) {
      return getTelphoneManager(context).getDeviceId();
   }

   /**
    * IMSI号
    * @param context
    * @return
    */
   public static String getImis(Context context) {
      return getTelphoneManager(context).getSubscriberId();
   }

   /**
    *  厂商信息
    * @return
    */
   public static String getProductInfo() {
      return android.os.Build.MODEL;
   }

   /**
    * release版本
    * @return
    */
   public static String getReleaseVersion() {
      return android.os.Build.VERSION.RELEASE;
   }

   /**
    * SDK_INT 版本
    * @return
    */
   public static int getSDKVersion() {
      return android.os.Build.VERSION.SDK_INT;
   }

   /**
    * 手机号码
    * @param context
    * @return
    */
   public static String getPhoneNum(Context context) {
      return getTelphoneManager(context).getLine1Number();
   }

   /**
    * 当前运营商
    * @param context
    * @return 返回0 表示失败 1表示为中国移动 2为中国联通 3为中国电信
    */
   public static int getProviderName(Context context) {
      String IMSI = getImis(context);
      if (IMSI == null) {
         return ERROR;
      }
      if (IMSI.startsWith("46000") || IMSI.startsWith("46002")) {
         return CHINA_MOBILE;
      } else if (IMSI.startsWith("46001")) {
         return UNICOM;
      } else if (IMSI.startsWith("46003")) {
         return TELECOMMUNICATIONS;
      }
      return ERROR;
   }

   /**
    * 手机CPU名字
    * @return
    */
   public static String getCpuName() {
      FileReader fileReader = null;
      BufferedReader bufferedReader = null;
      try {
         // 读取文件CPU信息
         fileReader = new FileReader("/pro/cpuinfo");
         bufferedReader = new BufferedReader(fileReader);
         String string = bufferedReader.readLine();
         String[] strings = string.split(":\\s+", 2);
         return strings[1];
      } catch (FileNotFoundException e) {
         Logger.e(TAG, e.getLocalizedMessage());
      } catch (IOException e) {
         Logger.e(TAG, e.getLocalizedMessage());
      } finally {
         if (bufferedReader != null) {
            try {
               bufferedReader.close();
            } catch (IOException e) {
               Logger.e(TAG, e.getLocalizedMessage());
            }
         }
         if (fileReader != null) {
            try {
               fileReader.close();
            } catch (IOException e) {
               Logger.e(TAG, e.getLocalizedMessage());
            }
         }
      }
      return null;
   }

   /**
    * 检查程序是否运行
    * @param context
    * @param packageName
    * @return
    */
   public static boolean isAppRunning(Context context, String packageName) {
      boolean isAppRunning = false;
      ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
      List<RunningTaskInfo> list = am.getRunningTasks(100);
      for (RunningTaskInfo info : list) {
         if (info.topActivity.getPackageName().equals(packageName) && info.baseActivity.getPackageName().equals(packageName)) {
            isAppRunning = true;
            // find it, break
            break;
         }
      }
      return isAppRunning;
   }

   /**
    * 是否在最前面
    * 
    * @param context
    * @param packageName
    * @return
    */
   public static boolean isTopActivity(Context context, String packageName) {
      ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
      List<RunningTaskInfo> tasksInfo = activityManager.getRunningTasks(1);
      if (tasksInfo.size() > 0) {
         System.out.println("---------------包名-----------" + tasksInfo.get(0).topActivity.getPackageName());
         // 应用程序位于堆栈的顶层
         if (packageName.equals(tasksInfo.get(0).topActivity.getPackageName())) {
            return true;
         }
      }
      return false;
   }
}