Context.getSystemServiceで取得可能なサービス一覧

追記

AndroidXから `ContextCompat.getSystemService(context:Context, class:Class)`が可能になった。
Castも不要なので取得可能なクラスが分かっている場合はこちらの方が楽だろう。

val am = ContextCompat.getSystemService(this, ActivityManager::class.java)

元記事

Context.getSystemService("XXX")で引数にできるサービスの一覧。
どうして最初からメソッドになってないのだろう。

WindowManager	WINDOW_SERVICE
LayoutInflater	LAYOUT_INFLATER_SERVICE
ActivityManager	ACTIVITY_SERVICE
PowerManager	POWER_SERVICE
AlarmManager	ALARM_SERVICE
NotificationManager	NOTIFICATION_SERVICE
KeyguardManager	KEYGUARD_SERVICE
LocationManager	LOCATION_SERVICE
SearchManager	SEARCH_SERVICE
SensorManager	SENSOR_SERVICE
StorageManager	STORAGE_SERVICE
Vibrator	VIBRATOR_SERVICE
ConnectivityManager	CONNECTIVITY_SERVICE
WifiManager	WIFI_SERVICE
AudioManager	AUDIO_SERVICE
MediaRouter	MEDIA_ROUTER_SERVICE
TelephonyManager	TELEPHONY_SERVICE
InputMethodManager	INPUT_METHOD_SERVICE
UiModeManager	UI_MODE_SERVICE
DownloadManager	DOWNLOAD_SERVICE

上記一覧を一括置換してUtilクラスを適当に作ってみた。

public class ManagerUtil { 
   public static WindowManager getWindowManager(Context context) {
        return (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    }

    public static LayoutInflater getLayoutInflater(Context context) {
        return (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    public static ActivityManager getActivityManager(Context context) {
        return (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    }

    public static PowerManager getPowerManager(Context context) {
        return (PowerManager) context.getSystemService(Context.POWER_SERVICE);
    }

    public static AlarmManager getAlarmManager(Context context) {
        return (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    }

    public static NotificationManager getNotificationManager(Context context) {
        return (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    }

    public static KeyguardManager getKeyguardManager(Context context) {
        return (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
    }

    public static LocationManager getLocationManager(Context context) {
        return (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
    }

    public static SearchManager getSearchManager(Context context) {
        return (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
    }

    public static SensorManager getSensorManager(Context context) {
        return (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
    }

    public static StorageManager getStorageManager(Context context) {
        return (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
    }

    public static Vibrator getVibrator(Context context) {
        return (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
    }

    public static ConnectivityManager getConnectivityManager(Context context) {
        return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    }

    public static WifiManager getWifiManager(Context context) {
        return (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    }

    public static AudioManager getAudioManager(Context context) {
        return (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    }

    public static MediaRouter getMediaRouter(Context context) {
        return (MediaRouter) context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
    }

    public static TelephonyManager getTelephonyManager(Context context) {
        return (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    }

    public static InputMethodManager getInputMethodManager(Context context) {
        return (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
    }

    public static UiModeManager getUiModeManager(Context context) {
        return (UiModeManager) context.getSystemService(Context.UI_MODE_SERVICE);
    }

    public static DownloadManager getDownloadManager(Context context) {
        return (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
    }
}