TelephonyManager tm = (TelephonyManager) getApplicationContext().getSystemService(getApplicationContext().TELEPHONY_SERVICE);
String imei = tm.getSimSerialNumber(); //取出ICCID
安卓上层获取ICCID的代码
然后跟踪流程发现执行过程为首先找到 TelephonyManager.java执行如下代码
public String getSimSerialNumber() {
return getSimSerialNumber(getSubId());
}
然后本文件中直接定义了此函数
public String getSimSerialNumber(int subId) {
try {
IPhoneSubInfo info = getSubscriberInfo();
if (info == null)
return null;
return info.getIccSerialNumberForSubscriber(subId, mContext.getOpPackageName());
} catch (RemoteException ex) {
return null;
} catch (NullPointerException ex) {
// This could happen before phone restarts due to crashing
return null;
}
}
然后通过函数getIccSerialNumberForSubscriber() 去获取ICCID的值，此函数定义在
frameworks/opt/telephony/src/java/com/android/internal/telephony/PhoneSubInfoController.java文件中，函数内容如下
public String getIccSerialNumberForSubscriber(int subId, String callingPackage) {
Phone phone = getPhone(subId);
if (phone != null) {
if (!checkReadPhoneState(callingPackage, “getIccSerialNumber”)) {
return null;
}
Rlog.d(“zxy”,“phone.getIccSerialNumber”);
return phone.getIccSerialNumber(); //主要执行的函数
} else {
loge(“getIccSerialNumber phone is null for Subscription:” + subId);
return null;
}
}
可以看出上面主要的函数为phone.getIccSerialNumber()
此函数又定义在frameworks/opt/telephony/src/java/com/android/internal/telephony/GsmCdmaPhone.java文件中，函数内容如下
public String getIccSerialNumber() {
IccRecords r = mIccRecords.get();
if (!isPhoneTypeGsm() && r == null) {
// to get ICCID form SIMRecords because it is on MF.
r = mUiccController.getIccRecords(mPhoneId, UiccController.APP_FAM_3GPP);
}
return (r != null) ? r.getIccId() : null;
}
主要执行函数为getIccId()，此函数定义在frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/IccRecords.java文件中，主要内容为
public String getIccId() {
return mIccId;
}
返回变量mIccId的值，流程到此就结束了。
然后发现这个值是在哪里赋值的呢，可以看到有三个文件继承了含有mIccId值的类
frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/IsimUiccRecords.java
46:public class IsimUiccRecords extends IccRecords implements IsimRecords {
frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/SIMRecords.java
49:public class SIMRecords extends IccRecords {
frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/RuimRecords.java
49:public class RuimRecords extends IccRecords {
但是以上三个文件中只有 frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/SIMRecords.java和frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/RuimRecords.java文件中含有，然后添加打印信息发现frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/SIMRecords.java执行才会获取ICCID值，然后修改 mIccId = mFullIccId; 就可以正确获取完整的ICCID值，然后修改frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/IccUtils.java里面的bchToString函数，支持大写之母字母，如下图所示，至此，就结束了。
