@param index Index into the color array of the color to display in the progress spinner.

@param strokeWidth Set the stroke width of the progress spinner in pixels.

@return Whether it is possible for the child view of this layout to scroll up. Override this if the child view is a custom view.

改变加载更多状态 @date 2013-11-11 下午10:05:27 @change JohnWatson @version 1.0

是否有SDCard @return 是否有SDCard

execute shell command, default return result msg @param command command @param isRoot whether need to run with root @return @see ShellUtil#execComma

获取SD卡路径 @return

@return The amount the progress spinner is currently rotated, between [0..1].

@return The amount the progress spinner is currently rotated, between [0..1].

whether context is system application @param context @return

整个头部控件是否已经完全隐藏 @return true表示完全隐藏，false表示没有完全隐藏

Create an ActivityOptions specifying a custom animation to run when the activity is displayed. @param context Who is defining this. This is the appl

Creates the directory named by the trailing filename of this file, including the complete directory path required to create this directory. <br/> <br/

这个方法必须放在view加载完后再执行，否则获取不到view的宽度和坐标 @param activity：执行动画的activity @param sharedElement：执行动画的元素 @param sharedElementId：新的activity中要接收动画效果的元素的id，这样就得到了

正在加载更多，FootView显示 ： 加载中... @date 2013-11-20 下午4:35:51 @change JohnWatson @version 1.0

设置类的属性（包括私有和保护） @param classname @param filedName @param obj @param filedVaule

设置动画差值器 @param interpolator