android 获取SIM卡状态全过程

app层面：

int sim1state = mTelephonyManager.getSimState(0);

framework层面：

1.

 SubscriptionManager.getSimStateForSubscriber(subId[0])

2. SubscriptionManager

 simState = iSub.getSimStateForSubscriber(subId);

3.SubscriptionController

 simState = icc.getState()

4.IccCardProxy

5.mUiccController

  mUiccController.registerForIccChanged(this, EVENT_ICC_CHANGED, null);
最后就是监听icc变化啦！！