目前国内对于双卡智能手机的需求还是很大的，各种复杂的业务会涉及到双卡模块；而android标准的api又不提供对双卡的支持。导致国内双卡模块标准混乱，各个厂商各玩各的。目前我知道的双卡解决方案就有：mtk，展讯，高通，broadcom等。

由于公司业务需要，必须要对双卡手机获取各自的imei，imsi，所以也做了一些研究：

首先是最为应用广泛的mtk平台，国内山寨手机以及一些低端品牌双卡都是做的mtk的双卡解决方案

private static void initMtkDoubleSim() {		try {			TelephonyManager tm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);			Class<?> c = Class.forName("com.android.internal.telephony.Phone");			Field fields1 = c.getField("GEMINI_SIM_1");			fields1.setAccessible(true);			simId_1 = (Integer) fields1.get(null);			Field fields2 = c.getField("GEMINI_SIM_2");			fields2.setAccessible(true);			simId_2 = (Integer) fields2.get(null);			Method m = TelephonyManager.class.getDeclaredMethod(					"getSubscriberIdGemini", int.class);			imsi_1 = (String) m.invoke(tm, simId_1);			imsi_2 = (String) m.invoke(tm, simId_2);			Method m1 = TelephonyManager.class.getDeclaredMethod(					"getDeviceIdGemini", int.class);			imei_1 = (String) m1.invoke(tm, simId_1);			imei_2 = (String) m1.invoke(tm, simId_2);			Method mx = TelephonyManager.class.getDeclaredMethod(					"getPhoneTypeGemini", int.class);			phoneType_1 = (Integer) mx.invoke(tm, simId_1);			phoneType_2 = (Integer) mx.invoke(tm, simId_2);			if (TextUtils.isEmpty(imsi_1) && (!TextUtils.isEmpty(imsi_2))) {				defaultImsi = imsi_2;			}			if (TextUtils.isEmpty(imsi_2) && (!TextUtils.isEmpty(imsi_1))) {				defaultImsi = imsi_1;			}		} catch (Exception e) {			isMtkDoubleSim = false;			return;		}		isMtkDoubleSim = true;	}

 可见，在TelephonyManager中提供了**Gemini的方法，可以用反射很方便地获取到相应的信息。

还有

private static void initMtkSecondDoubleSim() {		try {			TelephonyManager tm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);			Class<?> c = Class.forName("com.android.internal.telephony.Phone");			Field fields1 = c.getField("GEMINI_SIM_1");			fields1.setAccessible(true);			simId_1 = (Integer) fields1.get(null);			Field fields2 = c.getField("GEMINI_SIM_2");			fields2.setAccessible(true);			simId_2 = (Integer) fields2.get(null);			Method mx = TelephonyManager.class.getMethod("getDefault",					int.class);			TelephonyManager tm1 = (TelephonyManager) mx.invoke(tm, simId_1);			TelephonyManager tm2 = (TelephonyManager) mx.invoke(tm, simId_2);			imsi_1 = tm1.getSubscriberId();			imsi_2 = tm2.getSubscriberId();			imei_1 = tm1.getDeviceId();			imei_2 = tm2.getDeviceId();			phoneType_1 = tm1.getPhoneType();			phoneType_2 = tm2.getPhoneType();			if (TextUtils.isEmpty(imsi_1) && (!TextUtils.isEmpty(imsi_2))) {				defaultImsi = imsi_2;			}			if (TextUtils.isEmpty(imsi_2) && (!TextUtils.isEmpty(imsi_1))) {				defaultImsi = imsi_1;			}		} catch (Exception e) {			isMtkSecondDoubleSim = false;			return;		}		isMtkSecondDoubleSim = true;	}

 看样子有似乎也是属于mtk平台的解决方案，因为都有GEMINI_SIM_1属性,这种双卡方案只在联想278t上发现过；有两个TelephonyManager实例，根据getDefault方法获取

下面是展讯平台的（貌似市面上手机不多啊）：

private static void initSpreadDoubleSim() {		try {			Class<?> c = Class					.forName("com.android.internal.telephony.PhoneFactory");			Method m = c.getMethod("getServiceName", String.class, int.class);			spreadTmService = (String) m					.invoke(c, Context.TELEPHONY_SERVICE, 1);			TelephonyManager tm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);			imsi_1 = tm.getSubscriberId();			imei_1 = tm.getDeviceId();			phoneType_1 = tm.getPhoneType();			TelephonyManager tm1 = (TelephonyManager) mContext.getSystemService(spreadTmService);			imsi_2 = tm1.getSubscriberId();			imei_2 = tm1.getDeviceId();			phoneType_2 = tm1.getPhoneType();			if (TextUtils.isEmpty(imsi_1) && (!TextUtils.isEmpty(imsi_2))) {				defaultImsi = imsi_2;			}			if (TextUtils.isEmpty(imsi_2) && (!TextUtils.isEmpty(imsi_1))) {				defaultImsi = imsi_1;			}		} catch (Exception e) {			isSpreadDoubleSim = false;			return;		}		isSpreadDoubleSim = true;	}

 这个没有展讯sdk的话还是很难找的吧？

下面是高通的：（貌似高通做的不咋的有些接口没有双卡实现啊）

public static void initQualcommDoubleSim() {try {TelephonyManager tm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);Class<?> cx = Class.forName("android.telephony.MSimTelephonyManager");Object obj =mContext.getSystemService("phone_msim");simId_1 = 0;simId_2 = 1; Method mx = cx.getMethod("getDataState");// int stateimei_1 = (Integer) mx.invoke(cx.newInstance());int stateimei_2 = tm.getDataState();Method mde = cx.getMethod("getDefault");Method md = cx.getMethod("getDeviceId", int.class);Method ms = cx.getMethod("getSubscriberId", int.class);Method mp = cx.getMethod("getPhoneType"); // Object obj = mde.invoke(cx); imei_1 = (String) md.invoke(obj, simId_1);imei_2 = (String) md.invoke(obj, simId_2); imsi_1 = (String) ms.invoke(obj, simId_1);imsi_2 = (String) ms.invoke(obj, simId_2); int statephoneType_1 = tm.getDataState();int statephoneType_2 = (Integer) mx.invoke(obj);Log.e("tag", statephoneType_1 + "---" + statephoneType_2); // Class<?> msc = Class.forName("android.telephony.MSimSmsManager");// for (Method m : msc.getMethods()) {// if (m.getName().equals("sendTextMessage")) {// m.getParameterTypes();// }// Log.e("tag", m.getName());// } } catch (Exception e) {isQualcommDoubleSim = false;return;}isQualcommDoubleSim = true; }

getPhoneType&getDataState 方法看了底层发现没有双卡实现，目前也不知道该咋办...

未完待续....