java - 如何从 Dual Sim Android 设备获取 Sim 运营商名称？

Question

我有双卡 Android 智能手机。我知道 android SDK 不支持双卡双待设备。我想在默认插槽上访问 sim 的 sim 运营商名称。但是当我运行程序时，它给了我一个空字符串。以下是我的代码:

TelephonyManager telemamanger = (TelephonyManager) 
getSystemService(Context.TELEPHONY_SERVICE);

String simOperatorName = telemamanger.getSimOperatorName();      
Toast.makeText(AmountActivity.this,simOperatorName,Toast.LENGTH_SHORT).show();

Answer 1

这是获取任何 Android 设备的 SIM 卡名称的完整代码。

//above 22
 if (Build.VERSION.SDK_INT > 22) {
        //for dual sim mobile
        SubscriptionManager localSubscriptionManager = SubscriptionManager.from(this);

        if (localSubscriptionManager.getActiveSubscriptionInfoCount() > 1) {
         //if there are two sims in dual sim mobile
            List localList = localSubscriptionManager.getActiveSubscriptionInfoList();
            SubscriptionInfo simInfo = (SubscriptionInfo) localList.get(0);
            SubscriptionInfo simInfo1 = (SubscriptionInfo) localList.get(1);

            final String sim1 = simInfo.getDisplayName().toString();
            final String sim2 = simInfo1.getDisplayName().toString();

        }else{
         //if there is 1 sim in dual sim mobile
            TelephonyManager tManager = (TelephonyManager) getBaseContext()
                    .getSystemService(Context.TELEPHONY_SERVICE);

            String sim1 = tManager.getNetworkOperatorName();

        }

    }else{
        //below android version 22
                TelephonyManager tManager = (TelephonyManager) getBaseContext()
                        .getSystemService(Context.TELEPHONY_SERVICE);

                String sim1 = tManager.getNetworkOperatorName();
    }