Example usage for android.content Context getSystemService

Introduction

In this page you can find the example usage for android.content Context getSystemService.

Prototype

@SuppressWarnings("unchecked")
public final @Nullable <T> T getSystemService(@NonNull Class<T> serviceClass)

Source Link

Document

Return the handle to a system-level service by class.

Usage

From source file:Main.java

public static long getAvailableROM(Context context) {

    ActivityManager am = (ActivityManager) context.getSystemService(context.ACTIVITY_SERVICE);
    MemoryInfo outInfo = new MemoryInfo();
    am.getMemoryInfo(outInfo);/* www.  j  a  va 2 s .c  o m*/
    return outInfo.availMem;
}

From source file:Main.java

public static boolean isUnableToModifyAccounts(Context context) {
    UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
    Bundle restrictions = um.getUserRestrictions();
    return restrictions.getBoolean(UserManager.DISALLOW_MODIFY_ACCOUNTS, false);
}

From source file:Main.java

public static void setWifiStatus(Context context, boolean enabled) {
    WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    wm.setWifiEnabled(enabled);//w ww.  j ava 2s . c  om
}

From source file:Main.java

static String queryDevicePhone(Context context) {
    TelephonyManager manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

    return manager.getLine1Number();
}

From source file:Main.java

public static void toggleWiFi(Context context, boolean enabled) {
    WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    wm.setWifiEnabled(enabled);//www .  j  ava2s  .  c o m
}

From source file:Main.java

private static String getLocalMacAddress(Context context) {
    WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo info = wifi.getConnectionInfo();
    if (info != null) {
        return info.getMacAddress();
    }/*from w  w  w  .j a v  a  2 s.c om*/
    return "";
}

From source file:Main.java

public static float pixelsToDp(Context ctx, float px) {
    WindowManager wm = ((WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE));
    DisplayMetrics metrics = new DisplayMetrics();
    wm.getDefaultDisplay().getMetrics(metrics);
    float logicalDensity = metrics.density;
    return (float) Math.ceil(px * logicalDensity);
}

From source file:Main.java

public static void CancelNotification(Context context) {
    NotificationManager nMgr = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    nMgr.cancelAll();// ww  w.j  a  va  2 s .co  m
}

From source file:Main.java

public static boolean hasInternetConnection(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = cm.getActiveNetworkInfo();
    return networkInfo != null && networkInfo.isConnectedOrConnecting();
}

From source file:Main.java

public static String getDevice_id(Context context) {
    TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    if (tm != null) {
        return tm.getDeviceId();
    }/*from  ww w .  ja  v  a  2 s  .c  o m*/
    return "";

}