学步园

       知道怎么样获取自己应用当前包(package.)下所有的Activity下 我们可以利用android 提供的PackageInfo类来实现 

  try {
          PackageInfo pi = getPackageManager().getPackageInfo(
            "Activity所在包名", PackageManager.GET_ACTIVITIES);

          mActivities = new ArrayList<ActivityInfo>(Arrays.asList(pi.activities));
          String ourName = getClass().getName();
          for (int i = 0; i < mActivities.size(); ++i) {
              if (ourName.equals(mActivities.get(i).name)) {
                  mActivities.remove(i);
                  break;
              }
          }
        } catch (PackageManager.NameNotFoundException e) {
          // Do nothing. Adapter will be empty.
        }

 是不是很巧妙