Context这个类下去找,

Summary

Constants
String	ACCESSIBILITY_SERVICE	Use with `getSystemService(String)` to retrieve a `AccessibilityManager` for giving the user feedback for UI events through the registered event listeners.
String	ACCOUNT_SERVICE	Use with `getSystemService(String)` to retrieve a `AccountManager` for receiving intents at a time of your choosing.
String	ACTIVITY_SERVICE	Use with `getSystemService(String)` to retrieve a `ActivityManager` for interacting with the global system state.
String	ALARM_SERVICE	Use with `getSystemService(String)` to retrieve a `AlarmManager` for receiving intents at a time of your choosing.
String	AUDIO_SERVICE	Use with `getSystemService(String)` to retrieve a `AudioManager` for handling management of volume, ringer modes and audio routing.
int	BIND_ABOVE_CLIENT	Flag for `bindService(Intent, ServiceConnection, int)`: indicates that the client application binding to this service considers the service to be more important than the app itself.
int	BIND_ADJUST_WITH_ACTIVITY	Flag for `bindService(Intent, ServiceConnection, int)`: If binding from an activity, allow the target service's process importance to be raised based on whether the activity is visible to the user, regardless whether another flag is used to reduce the amount that the client process's overall importance is used to impact it.
int	BIND_ALLOW_OOM_MANAGEMENT	Flag for `bindService(Intent, ServiceConnection, int)`: allow the process hosting the bound service to go through its normal memory management.
int	BIND_AUTO_CREATE	Flag for `bindService(Intent, ServiceConnection, int)`: automatically create the service as long as the binding exists.
int	BIND_DEBUG_UNBIND	Flag for `bindService(Intent, ServiceConnection, int)`: include debugging help for mismatched calls to unbind.
int	BIND_IMPORTANT	Flag for `bindService(Intent, ServiceConnection, int)`: this service is very important to the client, so should be brought to the foreground process level when the client is.
int	BIND_NOT_FOREGROUND	Flag for `bindService(Intent, ServiceConnection, int)`: don't allow this binding to raise the target service's process to the foreground scheduling priority.
int	BIND_WAIVE_PRIORITY	Flag for `bindService(Intent, ServiceConnection, int)`: don't impact the scheduling or memory management priority of the target service's hosting process.
String	CLIPBOARD_SERVICE	Use with `getSystemService(String)` to retrieve a `ClipboardManager` for accessing and modifying the contents of the global clipboard.
String	CONNECTIVITY_SERVICE	Use with `getSystemService(String)` to retrieve a `ConnectivityManager` for handling management of network connections.
int	CONTEXT_IGNORE_SECURITY	Flag for use with `createPackageContext(String, int)`: ignore any security restrictions on the Context being requested, allowing it to always be loaded.
int	CONTEXT_INCLUDE_CODE	Flag for use with `createPackageContext(String, int)`: include the application code with the context.
int	CONTEXT_RESTRICTED	Flag for use with `createPackageContext(String, int)`: a restricted context may disable specific features.
String	DEVICE_POLICY_SERVICE	Use with `getSystemService(String)` to retrieve a `DevicePolicyManager` for working with global device policy management.
String	DOWNLOAD_SERVICE	Use with `getSystemService(String)` to retrieve a `DownloadManager` for requesting HTTP downloads.
String	DROPBOX_SERVICE	Use with `getSystemService(String)` to retrieve a `DropBoxManager` instance for recording diagnostic logs.
String	INPUT_METHOD_SERVICE	Use with `getSystemService(String)` to retrieve a `InputMethodManager` for accessing input methods.
String	KEYGUARD_SERVICE	Use with `getSystemService(String)` to retrieve a `NotificationManager` for controlling keyguard.
String	LAYOUT_INFLATER_SERVICE	Use with `getSystemService(String)` to retrieve a `LayoutInflater` for inflating layout resources in this context.
String	LOCATION_SERVICE	Use with `getSystemService(String)` to retrieve a `LocationManager` for controlling location updates.
int	MODE_APPEND	File creation mode: for use with `openFileOutput(String, int)`, if the file already exists then write data to the end of the existing file instead of erasing it.
int	MODE_MULTI_PROCESS	SharedPreference loading flag: when set, the file on disk will be checked for modification even if the shared preferences instance is already loaded in this process.
int	MODE_PRIVATE	File creation mode: the default mode, where the created file can only be accessed by the calling application (or all applications sharing the same user ID).
int	MODE_WORLD_READABLE	File creation mode: allow all other applications to have read access to the created file.
int	MODE_WORLD_WRITEABLE	File creation mode: allow all other applications to have write access to the created file.
String	NFC_SERVICE	Use with `getSystemService(String)` to retrieve a `NfcManager` for using NFC.
String	NOTIFICATION_SERVICE	Use with `getSystemService(String)` to retrieve a `NotificationManager` for informing the user of background events.
String	POWER_SERVICE	Use with `getSystemService(String)` to retrieve a `PowerManager` for controlling power management, including "wake locks," which let you keep the device on while you're running long tasks.
String	SEARCH_SERVICE	Use with `getSystemService(String)` to retrieve a `SearchManager` for handling searches.
String	SENSOR_SERVICE	Use with `getSystemService(String)` to retrieve a `SensorManager` for accessing sensors.
String	STORAGE_SERVICE	Use with `getSystemService(String)` to retrieve a `StorageManager` for accessing system storage functions.
String	TELEPHONY_SERVICE	Use with `getSystemService(String)` to retrieve a `TelephonyManager` for handling management the telephony features of the device.
String	TEXT_SERVICES_MANAGER_SERVICE	Use with `getSystemService(String)` to retrieve a `TextServicesManager` for accessing text services.
String	UI_MODE_SERVICE	Use with `getSystemService(String)` to retrieve a `UiModeManager` for controlling UI modes.
String	USB_SERVICE	Use with `getSystemService(String)` to retrieve a `UsbManager` for access to USB devices (as a USB host) and for controlling this device's behavior as a USB device.
String	VIBRATOR_SERVICE	Use with `getSystemService(String)` to retrieve a `Vibrator` for interacting with the vibration hardware.
String	WALLPAPER_SERVICE	Use with `getSystemService(String)` to retrieve a com.android.server.WallpaperService for accessing wallpapers.
String	WIFI_P2P_SERVICE	Use with `getSystemService(String)` to retrieve a `WifiP2pManager` for handling management of Wi-Fi peer-to-peer connections.
String	WIFI_SERVICE	Use with `getSystemService(String)` to retrieve a `WifiManager` for handling management of Wi-Fi access.
String	WINDOW_SERVICE	Use with `getSystemService(String)` to retrieve a `WindowManager` for accessing the system's window manager.

publicObjectgetSystemService(Stringname){
if(WINDOW_SERVICE.equals(name)){
returnWindowManagerImpl.getDefault();
}elseif(LAYOUT_INFLATER_SERVICE.equals(name)){
synchronized(mSync){
LayoutInflaterinflater=mLayoutInflater;
if(inflater!=null){
returninflater;
}
mLayoutInflater=inflater=
PolicyManager.makeNewLayoutInflater(getOuterContext());
returninflater;
}
}elseif(ACTIVITY_SERVICE.equals(name)){
returngetActivityManager();
}elseif(INPUT_METHOD_SERVICE.equals(name)){
returnInputMethodManager.getInstance(this);
}elseif(ALARM_SERVICE.equals(name)){
returngetAlarmManager();
}elseif(ACCOUNT_SERVICE.equals(name)){
returngetAccountManager();
}elseif(POWER_SERVICE.equals(name)){
returngetPowerManager();
}elseif(CONNECTIVITY_SERVICE.equals(name)){
returngetConnectivityManager();
}elseif(THROTTLE_SERVICE.equals(name)){
returngetThrottleManager();
}elseif(WIFI_SERVICE.equals(name)){
returngetWifiManager();
}elseif(NOTIFICATION_SERVICE.equals(name)){
returngetNotificationManager();
}elseif(KEYGUARD_SERVICE.equals(name)){
returnnewKeyguardManager();
}elseif(ACCESSIBILITY_SERVICE.equals(name)){
returnAccessibilityManager.getInstance(this);
}elseif(LOCATION_SERVICE.equals(name)){
returngetLocationManager();
}elseif(SEARCH_SERVICE.equals(name)){
returngetSearchManager();
}elseif(SENSOR_SERVICE.equals(name)){
returngetSensorManager();
}elseif(STORAGE_SERVICE.equals(name)){
returngetStorageManager();
}elseif(VIBRATOR_SERVICE.equals(name)){
returngetVibrator();
}elseif(STATUS_BAR_SERVICE.equals(name)){
synchronized(mSync){
if(mStatusBarManager==null){
mStatusBarManager=newStatusBarManager(getOuterContext());
}
returnmStatusBarManager;
}
}elseif(AUDIO_SERVICE.equals(name)){
returngetAudioManager();
}elseif(TELEPHONY_SERVICE.equals(name)){
returngetTelephonyManager();
}elseif(CLIPBOARD_SERVICE.equals(name)){
returngetClipboardManager();
}elseif(WALLPAPER_SERVICE.equals(name)){
returngetWallpaperManager();
}elseif(DROPBOX_SERVICE.equals(name)){
returngetDropBoxManager();
}elseif(DEVICE_POLICY_SERVICE.equals(name)){
returngetDevicePolicyManager();
}elseif(UI_MODE_SERVICE.equals(name)){
returngetUiModeManager();
}
returnnull;
}

Android(安卓)getSystemService

Context这个类下去找,

Summary

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