android --如果手机是在飞机模式下还是不在网络中，我该如何获得它？

Question

我想知道信号电平。为此，我使用以下方法。但是我不知道如何联系电话，如果它是在飞机模式或停止服务。你能帮帮我吗?

public void signalLevel() {
    TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    List<CellInfo> all = tm.getAllCellInfo();
    String a = all.get(0).getClass().getName();


    if (a.equals("android.telephony.CellInfoLte")) {
        CellInfoLte cellInfoLte = (CellInfoLte) all.get(0);
        CellSignalStrengthLte cellSignalStrengthLte = cellInfoLte.getCellSignalStrength();
        signal = String.valueOf(cellSignalStrengthLte.getDbm() + " dB");
    } else if (a.equals("android.telephony.CellInfoWcdma")) {
        CellInfoWcdma cellInfoWcdma = (CellInfoWcdma) all.get(0);
        CellSignalStrengthWcdma cellSignalStrengthWcdma = cellInfoWcdma.getCellSignalStrength();
        signal = String.valueOf(cellSignalStrengthWcdma.getDbm() + " dB");

    } else if (a.equals("android.telephony.CellInfoGsm")) {
        CellInfoGsm cellInfoGsm = (CellInfoGsm) all.get(0);
        CellSignalStrengthGsm cellSignalStrengthGsm = cellInfoGsm.getCellSignalStrength();
        signal = String.valueOf(cellSignalStrengthGsm.getDbm() + " dB");
    }
}

谢谢你的帮助。

Answer 1

试试这个：

private static boolean isAirplaneModeOn(Context context) {
    return Settings.System.getInt(context.getContentResolver(),
       Settings.System.AIRPLANE_MODE_ON, 0) != 0;
}

如果启用，则为true。

Answer 2

对于网络检查，请尝试如下：

ConnectivityManager cm =
        (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null &&
                      activeNetwork.isConnectedOrConnecting();

要检查特定的网络类型，如Wifi，请使用以下命令：

boolean isWiFi = activeNetwork.getType() == ConnectivityManager.TYPE_WIFI;

有关更多细节，请参考https://developer.android.com/training/monitoring-device-state/connectivity-monitoring.html。

适用于飞机模式：

方法1:在运行时检查

public static boolean IsAirplaneModeOn(Context activityContext) {        
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
        return Settings.System.getInt(context.getContentResolver(), 
                Settings.System.AIRPLANE_MODE_ON, 0) != 0;          
    } else {
        return Settings.Global.getInt(context.getContentResolver(), 
                Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
    }       
}

方法2:广播接收机注册:

IntentFilter airplaneModeIntentFilter = new IntentFilter("android.intent.action.AIRPLANE_MODE");

BroadcastReceiver AirplaneModeReceiver = new BroadcastReceiver() {
      @Override
      public void onReceive(Context context, Intent intent) {
            boolean isAirplaneModeOn = intent.getBooleanExtra("state", false);
            // isAirplaneModeOn == true, means Airplane mode is turned on.
            // Else AirplaneMode is turned off.
      }
};

activitycontext.registerReceiver(receiver, airplaneModeIntentFilter);