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它已经上市一个月了，但 Android 3.0 的生态环境却没有显示出应有的活力，至今只有约 50 款专用软件上架

移动开发者 Justin Williams 在接受《连线》采访时说：“当年苹果的做法很明智，在 iPad 推出之前几个月就放出了开发工具。相比之下，Google 的开发者只是在 XOOM 发售之前几天才拿到开发工具。”所以在 iPad 发售时，商店里已经有了 1000 个专用软件。当 XOOM 发售时，这个数字是 15 。

还有另外一个原因导致开发者的热情不足，就是 Google 只把系统代码开放给了几个大厂商，例如摩托罗拉，三星，HTC 。大多数设备制造商和开发者根本接触不到 Android 3.0 的代码和技术细节，所以拖累了软件的开发进度

I had the same issue. Along with including android:xlargeScreens="true" I found this to be the fix.

The Android Market treats as though requesting a permission like CALL_PHONE also requests: <uses-feature android:name="android.hardware.telephony" /> The XOOM does not have telephony — the first Android Market-compliant device with that limitation. While it can have a data plan, it has no voice or SMS capability, and so it is treated as not having android.hardware.telephony. But, if you request permissions like CALL_PHONE, the Android Market by default will assume you need android.hardware.telephony. As a result, you will be filtered out of the Market for the XOOM. The solution is simple: for any hardware features that might be implied by permissions but that you do not absolutely need, manually add the appropriate element to your manifest with android:required="false": <uses-feature android:name="android.hardware.telephony" android:required="false" />

wired.com转《纽约时报》消息，Google即将发售自己开发的平板电脑，这款产品是一种“有电脑功能的电子阅读器”。 匿名消息来源称，此产品运行Android系统。Google已与出版商洽谈，以便把书籍和杂志加入此设备。Google平板电脑运行Android而不是传说中的Chrome OS，可能是因为Chrome OS不大会成为一个完整操作系统，而只是提供足够的软体加载浏览器、拜访Google的在线服务。而前者已经足够完备

Renderscript is a key new Honeycomb feature which we haven’t yet discussed in much detail

Renderscript is a new API targeted at high-performance 3D rendering and compute operations. The goal of Renderscript is to bring a lower level, higher performance API to Android developers. The target audience is the set of developers looking to maximize the performance of their applications and are comfortable working closer to the metal to achieve this

Renderscript has been used in the creation of the new visually-rich YouTube and Books apps. It is the API used in the live wallpapers shipping with the first Honeycomb tablets.

虽然 BGR 认为 XOOM 还是无法替代笔记本电脑，但是强大的硬件、令人印象深刻的规格配备以及专门为平板准备的系统，让 XOOM 仍不失为一款非常棒的产品。即便不够创新，与 iPad 相比在易用性、直观性以及软件选择上也没有做得更好，也一定会赢得很多消费者的青睐

电力表现不俗，标称 18-20 小时，TC 的编辑经过十小时的正常使用（音乐、读书、浏览网页）以后，还能剩余 67% 的电量，对于普通用户来说，应该是绰绰有余了

总体来说，从硬件上 XOOM 超越了 iPad，在工业设计和美学方面和 iPad 也是同一档次，只是已经非常出色的 Honeycomb 系统在易用性上还无法跟 iOS 相比。除此之外，XOOM 无疑是当今市场最好的平板电脑

For completeness we really should handle the possibility of the task getting cancelled. This can happen when the user navigates away from the app and the task is killed before its completed. This will cause the onPostExecute() method to not be called and so the onRefreshComplete() method won’t be called. Depending on how the user navigates through the app, they could return to this activity without going through the complete onCreate() lifecycle, and you’ll end up with the screen still showing the “loading” progress message in the header. This is common when using tabs between multiple ListViews. Also, the documented best practices for implementing an AsyncTask says that in long running background work you should periodically check if the task has been cancelled and try to gracefully quit your work and exit. So let’s get all of that in there.