(The self written picture browsing control can be directly embedded in other layouts as an independent control. It has the following characteristics without any coupling: the most important thing is that basically important methods have comments!! 1. It supports two-layer interfaces for adding pictures locally and adding pictures from the network. 2. It supports setting whether there is a switch button, and the resources supporting the switch button can be set through the interface. 3. It supports two-layer operations of direct scrolling and button switching. 4. The switch button changes with the image orientation. For example, when the 0 orientation image is displayed, only the right button will be displayed. When the final image is switched, only the left button will be displayed. 5. It supports zooming of the image, Support the setting of maximum and minimum zoom ratio of pictures. 6. Support the setting of acquiesced pictures. This document includes the following attachments:)