android开发过程中突然发现的warning,EditText 报出 “This text field does not specify an inputType or a hint” 原因: EditText需要指定默认输入类型. 解决办法:添加android:inputType属性或者android:hint属性. hint属性表示EditText的默认文本: inputType表示EditText的值类型: android:inputType参数类型说明: android:…
1- Read the usage policy of the website. I know this is the third time I mention that, but that tells you its important :)2- Always try to use the mobile website as it will generate a smaller html pages, so faster load time on your app (for example h…
想试验一下 index_combine这个hint,于是做了如下试验. 1.创建一个具有若干index的表 SQL> create table test as select object_id,object_type,status from dba_objects; Table created. SQL> create index tobject_id on test(object_id); Index created. SQL> create index tobject_type on…