全屏模式下加入一些功能按键及信息显示。

[GoogleCodeExporter]

What is the feature you want?
发现有些平板连home键都没有（比如我正在用的P6800），那么��
�这些平板上如果打开全屏模式，则在学习时无法返回主界面�
��只能用第三方手势软件来返回桌面，但也无法直接返回上一
级菜单。另，全屏下的信息显示也偏少了点，希望能加入这��
�的改进：

1. 
全屏下，右上角加入“菜单”或“设置”按键，以及“返回��
�按键。
2. 全屏下，最上面的状态栏加上“电量”/“时间”显示。

How important is it to you?
第一点很重要，现在好些平板除开关及音量键外一个物理按��
�都没有。

Do you think other people also want this feature and why?

Original issue reported on code.google.com by zongb...@gmail.com on 17 Mar 2013 at 5:21

[GoogleCodeExporter]

根据Android 兼容性文档,所有的Android兼容设备必须要有Home, 
Menu and Back按键.
来源:
http://source.android.com/compatibility/downloads.html

7.2.3. Navigation keys
The Home, Menu and Back functions are essential to the Android navigation
paradigm. Device implementations MUST make these functions available to the
user at all times when running applications. These functions MAY be implemented
via dedicated physical buttons (such as mechanical or capacitive touch 
buttons), or
MAY be implemented using dedicated software keys, gestures, touch panel, etc.
Android supports both implementations.

如果你要电量和时间,最好还是不要用全屏幕模式

Original comment by mrlhwlib...@gmail.com on 17 Mar 2013 at 5:29

• Changed state: Invalid