Android 双卡适配 subId 相关方法

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业务场景

双卡设备进行网络等业务时，需要正确操作对应的卡。

执行卡业务和主要是使用subId和 PhoneId/SlotId进行区分隔离。

代码举例

初始化subId

//初始化subId
private int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;//1、通过intent传值（常用场景），默认为invaildId
int mSubId = intent.getIntExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX,SubscriptionManager.INVALID_SUBSCRIPTION_ID);//2、根据注册信息subscriptionInfo
private SubscriptionInfo mSub; //接口传值初始化，认为已经非null
mSubId = mSub.getSubscriptionId();//3、通过Phone全局常量
mSubId = intent.getIntExtra(PhoneConstants.SUBSCRIPTION_KEY, 0);//4、根据Phone对象
int mSubId = phone.getSubId();//5、根据卡槽获取
int mSubId = getSubId(soltId);

1、获取CarrierConfig 运营商配置

private PersistableBundle mCarrierConfig = null;
//通过subId获取CarrierConfig
CarrierConfigManager configManager = (CarrierConfigManager)getContext().getSystemService(Context.CARRIER_CONFIG_SERVICE);
mCarrierConfig = configManager.getConfigForSubId(mSubid);

2、获取TelephonyManager

TelephonyManager tm = (TelephonyManager)getContext().getSystemService(Context.TELEPHONY_SERVICE);
tm = tm.createForSubscriptionId(mSubid);  //关键点，拿到对应subId的tm
String mImsi = tm.getSubscriberId(mSubid);  //imsi？not subid？

3、获取Phone 对象

if (mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {int mPhoneId = SubscriptionManager.getPhoneId(mSubId); 
}

综合

private boolean setOperatorNetworkInfo(Context context, int slotId, int subId) {SubscriptionManager subscriptionManager = SubscriptionManager.from(context);TelephonyManager telephonyManager = TelephonyManager.from(context);//能直接调接口就不要调嵌套的啦，上面的TelephonyManager 初始化等同于下//TelephonyManager telephonyManager = context.getSystemService(Context.TELEPHONY_SERVICE);int mSubId = getSubId(soltId);if(soltId >= 0 && soltId < PHONE_COUNT){Phone phone = PhoneFactory.getPhone(soltId);SubscriptionInfo subInfo = subscriptionManager.getActiveSubscriptionInfo(subId);String mccmnc = telephonyManager.getSimOperator(subId);String imsi = telephonyManager.getSubscriberId(subId);}}//======== 相关源码类 SubscriptionManager & TelephonyManager =========/*** @deprecated developers should always obtain references directly from*             {@link Context#getSystemService(Class)}.*/@Deprecatedpublic static SubscriptionManager from(Context context) {return (SubscriptionManager) context.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE);}/** {@hide} */@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)public static TelephonyManager from(Context context) {return (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);}