android中getSystemService详解

• WINDOW_SERVICE                      WindowManager                    管理打开的窗口程序
  
• LAYOUT_INFLATER_SERVICE             LayoutInflater                   取得xml里定义的view
  
• ACTIVITY_SERVICE                    ActivityManager                  管理应用程序的系统状态
  
• POWER_SERVICE                       PowerManger                      电源的服务
  
• ALARM_SERVICE                       AlarmManager                     闹钟的服务
  
• NOTIFICATION_SERVICE                NotificationManager              状态栏的服务
  
• KEYGUARD_SERVICE                    KeyguardManager                  键盘锁的服务
  
• LOCATION_SERVICE                    LocationManager                  位置的服务，如GPS
  
• SEARCH_SERVICE                      SearchManager                    搜索的服务
  
• VEBRATOR_SERVICE                    Vebrator                         手机震动的服务
  
• CONNECTIVITY_SERVICE                Connectivity                     网络连接的服务
  
• WIFI_SERVICE                        WifiManager                      Wi-Fi服务
  
• TELEPHONY_SERVICE                   TeleponyManager                  电话服务

• WINDOW_SERVICE ("window") 
  The top-level window manager in which you can place custom windows. The returned object is a WindowManager. 
  
• LAYOUT_INFLATER_SERVICE ("layout_inflater")
  A LayoutInflater for inflating layout resources in this context. 
  
• ACTIVITY_SERVICE ("activity")
  A ActivityManager for interacting with the global activity state of the system. 
  
• POWER_SERVICE ("power")
  A PowerManager for controlling power management. 
  
• ALARM_SERVICE ("alarm")
  A AlarmManager for receiving intents at the time of your choosing. 
  
• NOTIFICATION_SERVICE ("notification")
  A NotificationManager for informing the user of background events. 
  
• KEYGUARD_SERVICE ("keyguard")
  A KeyguardManager for controlling keyguard. 
  
• LOCATION_SERVICE ("location")
  A LocationManager for controlling location (e.g., GPS) updates. 
  
• SEARCH_SERVICE ("search")
  A SearchManager for handling search. 
  
• VIBRATOR_SERVICE ("vibrator")
  A Vibrator for interacting with the vibrator hardware. 
  
• CONNECTIVITY_SERVICE ("connection")
  A ConnectivityManager for handling management of network connections. 
  
• WIFI_SERVICE ("wifi")
  A WifiManager for management of Wi-Fi connectivity. 
  
• INPUT_METHOD_SERVICE ("input_method")
  An InputMethodManager for management of input methods. 
  
• UI_MODE_SERVICE ("uimode")
  An UiModeManager for controlling UI modes. 
  
• DOWNLOAD_SERVICE ("download")
  A DownloadManager for requesting HTTP downloads

在android 获取手机信息的时候用到这样一段代码：

public class BasicInfo {

        public String getPhoneNumber()

        {

                // 获取手机号 MSISDN，很可能为空

                TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

                StringBuffer inf = new StringBuffer();

                switch(tm.getSimState()){ //getSimState()取得sim的状态  有下面6中状态  

                        case TelephonyManager.SIM_STATE_ABSENT :inf.append("无卡");return inf.toString();   

                        case TelephonyManager.SIM_STATE_UNKNOWN :inf.append("未知状态");return inf.toString(); 

                        case TelephonyManager.SIM_STATE_NETWORK_LOCKED :inf.append("需要NetworkPIN解锁");return inf.toString();  

                        case TelephonyManager.SIM_STATE_PIN_REQUIRED :inf.append("需要PIN解锁");return inf.toString();  

                        case TelephonyManager.SIM_STATE_PUK_REQUIRED :inf.append("需要PUK解锁");return inf.toString();  

                        case TelephonyManager.SIM_STATE_READY :break;  

        }

        String phoneNumber = tm.getLine1Number();

        return phoneNumber;

}

在另外一个activity类里面调用的时候 总是出现进程关闭 无法获取手机信息。后来发现

于是：

1. 给BasicInfo 添加一个带参数Context的构造函数：

public BasicInfo (Context context)

{

        this.context = context;

}

2. getPhoneNumber()函数里面改成：

context.getSystemService(Context.TELEPHONY_SERVIC);

3. 在调用类里面 BasicInfo bi = new BasicInfo(this);

bi.getPhoneNumber();