SimCard.java 文件源码

/**
 * Experimental call to retrieve sim operator names by subscription ids.
 *
 * @param context Application context
 * @return SIM operator name/names with ";" as a delimiter for many.
 */
private static String getSIMOperators(final Context context) {

    String operators = "";

    if (!PermissionsUtils.checkPermission(context, Manifest.permission.READ_PHONE_STATE)) {
        return operators;
    }

    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP_MR1) {
        List<SubscriptionInfo> subscriptions = SubscriptionManager.from(context).getActiveSubscriptionInfoList();
        if (subscriptions != null && subscriptions.size() > 0) {
            for(SubscriptionInfo info : subscriptions){
                int subId = info.getSubscriptionId();
                String operator = getSimOperatorNameForSubscription(context, subId);
                if (operator != null && operator.length() > 0) {
                    operators += operator + ";";
                }
            }
            // Remove last delimiter
            if (operators.length() > 1) {
                operators = operators.substring(0, operators.length()-1);
            }
        }
    }
    return operators;
}