在android中检查移动数据是打开还是关闭

问题描述

我的应用程序需要一种功能来检查用户的手机是否已打开手机数据。

我已引用此链接：#32239785

这是该主题中提供的代码

boolean mobileYN = false;

TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
if (tm.getSimstate() == TelephonyManager.SIM_STATE_READY) {
    if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1)
    {
        mobileYN = Settings.Global.getInt(context.getContentResolver(),"mobile_data",1) == 1;
    }
    else{
        mobileYN = Settings.Secure.getInt(context.getContentResolver(),1) == 1;
    }
}

此代码可在我的大多数手机中使用。

“诺基亚8”（Android 9）除外

即使我关闭了移动数据。该函数仍然返回true。

为什么？

解决方法

您是否真的需要检查是否启用或禁用了移动数据设置，或者您真正想做的是检查设备当前是否具有移动数据连接？

如果是后一种情况，则应使用CONNECTIVITY_SERVICE，例如docs中的示例：

private static final String DEBUG_TAG = "NetworkStatusExample";
...
ConnectivityManager connMgr =
        (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
boolean isWifiConn = false;
boolean isMobileConn = false;
for (Network network : connMgr.getAllNetworks()) {
    NetworkInfo networkInfo = connMgr.getNetworkInfo(network);
    if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
        isWifiConn |= networkInfo.isConnected();
    }
    if (networkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
        isMobileConn |= networkInfo.isConnected();
    }
}
Log.d(DEBUG_TAG,"Wifi connected: " + isWifiConn);
Log.d(DEBUG_TAG,"Mobile connected: " + isMobileConn);

上面的docs链接还包含一些您可能要检出的其他相关类的链接，例如NetworkInfo.DetailedState和ConnectivityManager.NetworkCallback

,

对此进行检查，是否有帮助：

class InternetNetwork {
companion object {
    fun isOnline(context: Context): Boolean {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val connectivityManager =
                context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
            val capabilities =
                connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
            if (capabilities != null)
                when {
                    capabilities.hasTransport(TRANSPORT_CELLULAR) -> {
                        Log.i("Internet","NetworkCapabilities.TRANSPORT_CELLULAR")
                        return true
                    }
                    capabilities.hasTransport(TRANSPORT_WIFI) -> {
                        Log.i("Internet","NetworkCapabilities.TRANSPORT_WIFI")
                        return true
                    }
                    capabilities.hasTransport(TRANSPORT_ETHERNET) -> {
                        Log.i("Internet","NetworkCapabilities.TRANSPORT_ETHERNET")
                        return true
                    }
                }
        } else {
            val connectivityManage =
                context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
            val netInfo = connectivityManage.activeNetworkInfo
            return netInfo != null && netInfo.isConnected
        }

        return false
    }
}
}