android监控sim卡有没有服务示例(sim卡管理)

//监听类
private PhoneStateListener getPhoneStateListener(final int sub) {
PhoneStateListener sPhOneStateListener= new PhoneStateListener(sub) {
    @Override
        public void onServiceStateChanged(ServiceState serviceState) {
            // TODO Auto-generated method stub
            if (serviceState != null) {
                if (serviceState.getState() == ServiceState.STATE_IN_SERVICE) {
                    hasService = true;
                } else {
                    hasService = false;
                }
            } else {
                if (DEBUG) Log.d(TAG, "no service state...may be the balance is not enough" + sub);
            }
            super.onServiceStateChanged(serviceState);
        }
      };
    return sPhoneStateListener;
}
//注册监听
private void registerPhoneListener() {
//获取卡号数,MSimTelephonyManager 这个类API没有开放,可以通过编译源码
//得到frameworks.jar包并导入你的工程, 然后import android.telephony.MSimTelephonyManager;
mSub = MSimTelephonyManager.getDefault().getPhoneCount();
mPhOneStateListener= new PhoneStateListener[mSub];
for (int i = 0; i mPhoneStateListener[i] = getPhoneStateListener(i);
mPhone.listen(mPhoneStateListener[i], PhoneStateListener.LISTEN_SERVICE_STATE);
}
}

//取消监听
private void unregisterPhoneListener() {
mSub = MSimTelephonyManager.getDefault().getPhoneCount();
for (int i = 0; i if(mPhoneStateListener[i] != null){
mPhone.listen(mPhoneStateListener[i], PhoneStateListener.LISTEN_NONE);
}
}
}
}