SWF全屏状态下，屏蔽了大部分键盘，禁止输入操作

　　今天下午在测试自己做的多媒体播放器时，发现在全屏状态下，输入框无法接受输入操作，原来以为是自己程序的BUG，试图在代码中控制焦点。反复调试都没成功，最后在网上查阅，发现很多人遇到了相同的问题。才知道原因：FlashPlayer 9在SWF全屏状态下，屏蔽了键盘操作（除了ESC键），AIR模式全屏下没有屏蔽键盘输入的情况；Flash Player 10 允许了更多的键盘操作（There is only support for “Tab, the Spacebar, and the (up, down, left, right) arrow keys”）。

       下面将我查询的积累的内容与大家分享：

“Security

End-user security was a key consideration in the implementation of this feature, and developers need to understand the following end-user, security-related restrictions and design content accordingly:

• To enable full-screen mode, developers must add a new <object> and <embed> tag parameter, allowFullScreen, to their HTML. This parameter defaults to false, or not allowing full screen. To allow full-screen, developers must set allowFullScreen to true in their <object>/<embed> tags.
• An overlay dialog box will appear when the movie enters full-screen mode, instructing the user how to exit and return to normal mode. The dialog box appears for a few seconds and then fades out.
• The ActionScript that initiates full-screen mode can be called only in response to a mouse click or keypress. If it is called in other situations, it will be ignored (in ActionScript 2.0) or throw an exception (in ActionScript 3.0).
• Users cannot enter text in text input fields while in full-screen mode. All keyboard input and key-related ActionScript is disabled while in full-screen mode, with the exception of the keyboard shortcuts that take the viewer out of full-screen mode.
• The user can disable full-screen mode for all Flash movies by adding a setting to the Flash Player configuration file mms.cfg. The file is described in the TechNote, IT Administration: Configuring Flash Player Auto-Update Notification. Add the line: FullScreenDisable=1 to the mms.cfg file to disable full-screen mode.　　”

　　From:http://www.adobe.com/devnet/flashplayer/articles/full_screen_mode.html

 

　　"If you're okay with using AIR instead of Flex you can run in full-screen mode with full keyboard input enabled:Setting the displayState property of the Stage to StageDisplayState.FULL_SCREEN_INTERACTIVE places the window in full-screen mode, and keyboard input is permitted in this mode. (In SWF content running in a browser, keyboard input is not permitted). To exit full-screen mode, the user presses the Escape key. "  

 From:http://stackoverflow.com/questions/1176639/text-input-fields-in-flex-when-full-screened-does-not-work

 

《Flash 10 Security Changes Good and Bad, Mostly Good (Full Screen Input, RTMFP, Clipboard, Local Save and Load)》这是很好的一篇相关文章，有兴趣的朋友可以看一下。链接：http://drawlogic.com/2008/09/28/flash-10-changes-good-and-bad-mostly-good-full-screen-input-rtmfp-clipboard-local-save-and-load/  因为文章真的很好，我会在下一篇随笔中全文转载！