如何恢复安卓相机preVIEW onPictureTaken功能之后？

我开发一个应用程序，采取从相机对象的图片并将其保存到SD卡中。除了一些东西它的伟大工程。（我不能配置例如分辨率一些参数）。但是，当我拍照就冻结在屏幕上。我只是想恢复preVIEW和捕捉同样的方式我拍照了。这里是满code：
http://bahacanaydin.blogspot.com/2012/05/package-com.html

I am developing an app that take pictures from camera object and save it to the sdcard. It works great except some things.(I cant config some parameters for example resolution). But when I take picture it freeze on the screen. I just want to resume the preview and capturing same way after I take picture. here is the full code : http://bahacanaydin.blogspot.com/2012/05/package-com.html