Android 切换双卡数据链接__2019.11.22

原文链接：https://www.cnblogs.com/yi-snow-W/p/10944033.html

判断当前那张卡 是走流量的
    @SuppressLint("MissingPermission")
    public static Integer getDefaultDataSubId(Context context) {
        Integer id = -1;
        try {
            SubscriptionManager sm = null;
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP_MR1) {
                sm = SubscriptionManager.from(context.getApplicationContext());
                Method getSubId = sm.getClass().getMethod("getDefaultDataSubId");
                if (getSubId != null) {
                    id = (int) getSubId.invoke(sm);
                }
            }
        }

https://www.jianshu.com/p/fbaf08eb59d7

https://blog.csdn.net/baidu_27196493/article/details/78444996