最近项目需求,需要获取Textview的行数,通过行数与TextView的maxLines进行比较来确定是否显示TextView下方的展开按钮是否显示,废话少说直接上代码,mTextView.getLineCount() ,似乎很美好,安卓有提供这个方法,但是总是返回0,这是为啥呢?官方注释如下: /*** Return the number of lines of text, or 0 if the internal Layout has not* been built.*/ 也就是说只有内部
//查询所有表明 select name from sysobjects where xtype='u' select * from sys.tables //查询数据库中所有的表名及行数 SELECT a.name, b.rows FROM sysobjects AS a INNER JOIN sysindexes AS b ON a.id = b.id WHERE (a.type = 'u') AND (b.indid IN (0, 1)) ORDER BY a.name,b.rows DE