Android :在双卡手机中获取网络运营商名称，同时通过编程读取短信

import android.content.Context;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;

public class NetworkOperatorUtil {
    public static String getNetworkOperatorName(Context context, int slotIndex) {
        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        if (telephonyManager != null) {
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
                SubscriptionManager subscriptionManager = (SubscriptionManager) context.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE);
                if (subscriptionManager != null) {
                    if (subscriptionManager.getActiveSubscriptionInfoCount() > slotIndex) {
                        return subscriptionManager.getActiveSubscriptionInfoForSimSlotIndex(slotIndex).getCarrierName().toString();
                    }
                }
            } else {
                return telephonyManager.getNetworkOperatorName();
            }
        }
        return "";
    }
}

import android.content.Context;
import android.telephony.SmsManager;

public class SmsUtil {
    public static String readSms(Context context) {
        StringBuilder smsBuilder = new StringBuilder();
        SmsManager smsManager = SmsManager.getDefault();
        // 读取所有短信
        // 注意：需要READ_SMS权限
        List<String> messages = smsManager.getMessagesFromIntent(intent);
        for (String message : messages) {
            smsBuilder.append(message);
        }
        return smsBuilder.toString();
    }
}