优化-生词本为空时,文本框显示没有收藏的单词 #4
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整体思路:
单词本视图初始设置了一个TextView,展示没有收藏的单词.默认显示
1.当单词本填充结果为空的时候 .设置该控件可见
2.当单词本查询结果不为空的时候,设置控件不可见.单词本正常填充
3.添加删除单词本单词优化.当删除之后,单词本里不再有单词的时候.设置该控件可见.避免删除之后,显示空白屏幕.