perform refreshing UI @param frame

perform UI after refresh @param frame

prepare for loading @param frame

When the content view has reached top and refresh has been completed, view will be reset. @param frame

A callback to receive where the user taps on a ImageView. You will receive a callback if the user taps anywhere on the view, tapping on 'whitespace' w

* 清空所有消息

* remove message from messageList * @param {String} messageId

* 裁剪图片，将图片裁剪成 width * height 大小 * param = { "path": String, "width": number, "height": number } * result = { "code": number(0 表示裁剪成功，否则不成功),

裁剪图片，将图片按比例裁剪成 width height 大小 @param map 包含 path，width，height 参数 @param callback 回调包含裁剪后的路径

* scroll messageList to bottom * @param {Boolean} animate

@param alpha Set the alpha of the progress spinner and associated arrowhead.

@param scale Set the scale of the arrowhead for the spinner.