反射

1. 获取小米双卡双待手机默认上网卡槽的方法

   1. 反编译小米的TeleService.apk，查看smali代码得知有一个getPreferredDataSlotId方法，相关代码：

      invoke-static {}, Lmiui/telephony/MultiSimManager;->getInstance()Lmiui/telephony/MultiSimManager;
      move-result-object v1
      invoke-virtual {v1}, Lmiui/telephony/MultiSimManager;->getPreferredDataSlotId()I;

   2. 使用java反射方法调用：

      try {
      Class<?> clazz = Class.forName("miui.telephony.MultiSimManager");
      Method method = clazz.getDeclaredMethod("getInstance");
      Object obj = (Object) method.invoke(null);
      Method method2 = clazz.getDeclaredMethod("getPreferredDataSlotId");
      Integer val = (Integer) method2.invoke(obj);
      Log.e("pmtoam", "[sam] val = " + val);
      } catch (Exception e) {
      e.printStackTrace();
      }

2. 反射机制
   http://www.cnblogs.com/mengdd/archive/2013/01/26/2877972.html
   http://blog.youkuaiyun.com/liujiahan629629/article/details/18013523