android中对服务的应用管理

在android的组织结构图中，可以看到，在service的上一层为manager层，包括activitymanager, windowmanager, packagemanager, telephonymanager, resourcemanager, locationmanager, notificationmanager.

至于这个结构图中的manager和实际中的service是否一一对应，还要看。

现在一个个的来找对应。

1 statusbarservice 对应statusbarmanager

/frameworks/base/core/java/android/app/StatusBarManager.java

在statusbarmanager的构造函数中，会实例化一个IStatusBar mService，同时向外暴露几个接口，

disable， expand， collapse， toggle， addIcon， updateIcon ，removeIcon，这几个向外暴露的方法都是通过调用mService的方法，也即是statusbarservice中的方法来实现。

SDK中并没有找到该类，可见该类并没有暴露给用户使用，只是给android内部使用。

2. powermanagerservice与powermanager对应

通过powermanager向外暴露接口。具体的接口用法，用途可以看响应的方法注释。

SDK中可以看到其类 android.os.PowerManager

其中说明用途的一句：This class gives you control of the power state of the device.

具体的使用可以看SDK的说明。

3. ActivityManagerService这里的对应实现方法有区别，ActivityManagerService是通过继承binder的类ActivityManagerNative来实现的。

ActivityManagerService与ActivityManager相对应。ActivityManager向外暴露接口方法。

SDK中有其类 ， android.app.ActivityManager 提供给用户使用。

说明 ：Interact with the overall activities running in the system. 具体的用法参见SDK。

4.TelephonyRegistry对应暴露的接口的manager没有找到，也许没有暴露，也许通过其他的方法。

5.PackageManagerService.java 与PackageManager.java

/frameworks/base/core/java/android/content/pm/PackageManager.java

SDK：android.content.pm.PackageManager 抽象类

SDK中注释：

Class for retrieving various kinds of information related to the application packages that are currently installed on the device. You can find this class throughgetPackageManager().

6.ContentService

没有找到对应的manager，可能由provider提供接口。

7.BatteryService 对应BatteryManager

SDK：android.os.BatteryManager

SDK中注释：

The BatteryManager class contains strings and constants used for values in theACTION_BATTERY_CHANGEDIntent.

8.HardwareService 没有找到对应的类来暴露其接口，可能没有做

9.AlarmManagerService对应AlarmManager.java

/frameworks/base/core/java/android/app/AlarmManager.java

SDK：android.app.AlarmManager

SDK中注释：This class provides access to the system alarm services. These allow you to schedule your application to be run at some point in the future.

10.SensorService 对应 SensorManager.java

/frameworks/base/core/java/android/hardware/SensorManager.java

SDK：android.hardware.SensorManager

SDK中注释：Class that lets you access the device's sensors. Get an instance of this class by callingContext.getSystemService()with an argument ofSENSOR_SERVICE.

11.WindowManagerService 对应 WindowManager.java

/frameworks/base/core/java/android/view/WindowManager.java

SDK：android.view.WindowManager 接口

SDK中注释：

The interface that apps use to talk to the window manager.

UseContext.getSystemService(Context.WINDOW_SERVICE)to get one of these.

12. BluetoothDeviceService对应 BluetoothDevice(待验证)

13.StatusBarService对应StatusBarManager

SDK中没有

14.ClipboardService 对应ClipboardManager.java

/frameworks/base/core/java/android/text/ClipboardManager.java

SDK： android.text.ClipboardManager

SDK中注释：

Interface to the clipboard service, for placing and retrieving text in the global clipboard.

You do not instantiate this class directly; instead, retrieve it throughgetSystemService(String).

15.InputMethodManagerService对应InputMethodManager

frameworks/base/core/java/android/view/inputmethod/InputMethodManager.java

SDK中居然没有！！

16.NetStatService NetStat.java

frameworks/base/core/java/android/os/NetStat.java

SDK中没有。

17.ConnectivityService ConnectivityManager.java

/frameworks/base/core/java/android/net/ConnectivityManager.java

SDK： android.net.ConnectivityManager

SDK中注释：

Class that answers queries about the state of network connectivity. It also notifies applications when network connectivity changes. Get an instance of this class by callingContext.getSystemService(Context.CONNECTIVITY_SERVICE).

The primary responsibilities of this class are to:

1. Monitor network connections (Wi-Fi, GPRS, UMTS, etc.)
2. Send broadcast intents when network connectivity changes
3. Attempt to "fail over" to another network when connectivity to a network is lost
4. Provide an API that allows applications to query the coarse-grained or fine-grained state of the available networks

18.AccessibilityManagerService AccessibilityManager.java

/frameworks/base/core/java/android/view/accessibility/AccessibilityManager.java

SDK中没有。

19. NotificationManagerService NotificationManage

SDK： android.app.NotificationManager

SDK中注释：

Class to notify the user of events that happen. This is how you tell the user that something has happened in the background.

Notifications can take different forms:

• A persistent icon that goes in the status bar and is accessible through the launcher, (when the user selects it, a designated Intent can be launched),
• Turning on or flashing LEDs on the device, or
• Alerting the user by flashing the backlight, playing a sound, or vibrating.

20.MountService 没有找到对应

21.DeviceStorageMonitorService 没有找到对应

22. LocationManagerService 没有对应，自身就是一个manager

23.SearchManagerService SearchManager.java

SDK：android.app.SearchManager

SDK中注释：

This class provides access to the system search services.

In practice, you won't interact with this class directly, as search services are provided through methods inActivitymethods and the theACTION_SEARCHIntent. This class does provide a basic overview of search services and how to integrate them with your activities. If you do require direct access to the SearchManager, do not instantiate this class directly; instead, retrieve it throughcontext.getSystemService(Context.SEARCH_SERVICE).

24.WallpaperService

25.AudioService

26.BackupManagerService

27. AppWidgetService 对应 AppWidgetManager.java

SDK中没有

以上为android提供的基本service，也许有对应的manager向外暴露接口，也许有对应的provider提供数据，也许没有暴露，需要用到的时候进一步查看。