删除：      src/com/github/linkycj/reciteword/FullscreenActivity.java
	删除：      src/com/github/linkycj/reciteword/util/SystemUiHider.java
	删除：      src/com/github/linkycj/reciteword/util/SystemUiHiderBase.java
	删除：      src/com/github/linkycj/reciteword/util/SystemUiHiderHoneycomb.java