<p>Sets the selection to the radio button whose identifier is passed in parameter. Using -1 as the selection identifier clears the selection; such an

棋子移动时候使用,节省开销 @param fromPoint

获取用户数据 @param userName

查询表限定数量记录 @param tableName 表名 @param limit 查询记录数（1~1000） @return JSON格式结果

logout @param unbindDeviceToken whether you need unbind your device token @param callback callback

send it to notification bar This can be override by subclass to provide customer implementation @param messages @param isForeground

设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去 @param visible

set initial letter of according user's nickname( username if no nickname) @param user

set user's nickname

将sp值转换为px值，保证文字大小不变

This function will transform the coordinates in the touch event to the coordinate system of the drawable that the imageview contain @param x x-coordin

add tab @param icon

change the chat type to EMConversationType @param chatType @return

Emojicon provider @return

get instance of EaseNotifier @return

get size of pages @param emojiconList @return

初始化