本文讲解UiccCard类
/frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/UiccCard.java
UICCController 类的onGetIccCardStatusDone() 方法，根据获取的SIM状态信息IccCardStatus 创建或更新UiccCard 对象；
private synchronized void onGetIccCardStatusDone(AsyncResult ar, Integer index) {
.......
IccCardStatus status = (IccCardStatus)ar.result;
if (mUiccCards[index] == null) {
//Create new card
mUiccCards[index] = new UiccCard(mContext, mCis[index], status, index);
} else {
//Update already existing card
mUiccCards[index].update(mContext, mCis[index] , status);
}
.......
}
UiccCard 类的构造方法，同样会调用update() 方法更新SIM 卡状态信息；
public UiccCard(Context c, CommandsInterface ci, IccCardStatus ics, int phoneId) {
mCardState = ics.mCardState;
mPhoneId = phoneId;
update(c, ci, ics);
}
UiccCard 类的 update() 方法：
1、根据IccCardStatus 参数在mUiccApplication 列表中匹配UiccCardApplication 对象，通过UiccCardApplication 类的update() 方法更新，否则创建一个UiccCardApplication 对象；
2、调用createAndUpdateCatService() 方法创建或更新CatService 对象；
3、获取RadioState状态，更新CardState，发出SIM卡插拔消息；
public void update(Context c, CommandsInterface ci, IccCardStatus ics) {
........
//update applications
if (DBG) log(ics.mApplications.length + " applications");
for ( int i = 0; i < mUiccApplications.length; i++) {
if (mUiccApplications[i] == null) {
//Create newly added Applications
if (i < ics.mApplications.length) {
mUiccApplications[i] = new UiccCardApplication(this,
ics.mApplications[i], mContext, mCi);
}
} else if (i >= ics.mApplications.length) {
//Delete removed applications
mUiccApplications[i].dispose();
mUiccApplications[i] = null;
} else {
//Update the rest
mUiccApplications[i].update(ics.mApplications[i], mContext, mCi); //调用UiccCardApplication.java
}
}
createAndUpdateCatService(); //CatService
..........
RadioState radioState = mCi.getRadioState();
if (DBG) log("update: radioState=" + radioState + " mLastRadioState="
+ mLastRadioState);
// No notifications while radio is off or we just powering up
if (radioState == RadioState.RADIO_ON && mLastRadioState == RadioState.RADIO_ON) {
if (oldState != CardState.CARDSTATE_ABSENT &&
mCardState == CardState.CARDSTATE_ABSENT) {
if (DBG) log("update: notify card removed");
mAbsentRegistrants.notifyRegistrants();
mHandler.sendMessage(mHandler.obtainMessage(EVENT_CARD_REMOVED, null));
} else if (oldState == CardState.CARDSTATE_ABSENT &&
mCardState != CardState.CARDSTATE_ABSENT) {
if (DBG) log("update: notify card added");
mHandler.sendMessage(mHandler.obtainMessage(EVENT_CARD_ADDED, null));
}
}
mLastRadioState = radioState;
}
}
createAndUpdateCatService() 方法，创建或更新CatService：
protected void createAndUpdateCatService() {
if (mUiccApplications.length > 0 && mUiccApplications[0] != null) {
// Initialize or Reinitialize CatService
if (mCatService == null) {
mCatService = CatService.getInstance(mCi, mContext, this, mPhoneId);
} else {
((CatService)mCatService).update(mCi, mContext, this);
}
} else {
if (mCatService != null) {
mCatService.dispose();
}
mCatService = null;
}
}
消息EVENT_CARD_REMOVED、 EVENT_CARD_ADDED 在UiccCard 类的handleMessage()方法中处理：
protected Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg){
switch (msg.what) {
case EVENT_CARD_REMOVED:
onIccSwap(false);
break;
case EVENT_CARD_ADDED:
onIccSwap(true);
break;
.........
}
}
};
onIccSwap() 方法，判断是否共卡座，如果是直接返回，否则调用promptForRestart()：
private void onIccSwap(boolean isAdded) {
boolean isHotSwapSupported = mContext.getResources().getBoolean(
R.bool.config_hotswapCapable);
if (isHotSwapSupported) { //给国内双卡共卡座设计留下接口
log("onIccSwap: isHotSwapSupported is true, don't prompt for rebooting");
return;
}
log("onIccSwap: isHotSwapSupported is false, prompt for rebooting");
promptForRestart(isAdded);
}
promptForRestart() 方法，切换sim卡，弹出提示框：
private void promptForRestart(boolean isAdded) {
synchronized (mLock) {
final Resources res = mContext.getResources();
final String dialogComponent = res.getString(
R.string.config_iccHotswapPromptForRestartDialogComponent);
if (dialogComponent != null) {
Intent intent = new Intent().setComponent(ComponentName.unflattenFromString(
dialogComponent)).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
.putExtra(EXTRA_ICC_CARD_ADDED, isAdded);
try {
mContext.startActivity(intent);
return;
} catch (ActivityNotFoundException e) {
loge("Unable to find ICC hotswap prompt for restart activity: " + e);
}
}
// TODO: Here we assume the device can't handle SIM hot-swap
// and has to reboot. We may want to add a property,
// e.g. REBOOT_ON_SIM_SWAP, to indicate if modem support
// hot-swap.
DialogInterface.OnClickListener listener = null;
// TODO: SimRecords is not reset while SIM ABSENT (only reset while
// Radio_off_or_not_available). Have to reset in both both
// added or removed situation.
listener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
synchronized (mLock) {
if (which == DialogInterface.BUTTON_POSITIVE) {
if (DBG) log("Reboot due to SIM swap");
PowerManager pm = (PowerManager) mContext
.getSystemService(Context.POWER_SERVICE);
pm.reboot("SIM is added."); //SIM卡上电重启
}
}
}
};
Resources r = Resources.getSystem();
String title = (isAdded) ? r.getString(R.string.sim_added_title) :
r.getString(R.string.sim_removed_title);
String message = (isAdded) ? r.getString(R.string.sim_added_message) :
r.getString(R.string.sim_removed_message);
String buttonTxt = r.getString(R.string.sim_restart_button);
AlertDialog dialog = new AlertDialog.Builder(mContext)
.setTitle(title)
.setMessage(message)
.setPositiveButton(buttonTxt, listener)
.create();
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
dialog.show(); //SIM卡弹出提示框
}
}