Android 幻灯片式图片浏览器。实现图片显示，图片淡入淡出。可单击某图片，以选中该图片，并且让其居中显示；也可用手指拖动图片来移动图片-Android Slideshow Picture Viewer. Achieve picture, pictures fade. You can click a picture, select the picture, and let it centered finger drag the picture to move the picture