java 背景图片

10.1 绘制图片

https://www.bilibili.com/video/BV1UJ411v7M9

10.2 锁定长宽比

https://www.bilibili.com/video/BV1UJ411v7jd

10.3 图片缩放工具

https://www.bilibili.com/video/BV1UJ411v7jc

10.4 图片显示控件

https://www.bilibili.com/video/BV1UJ411v75N

10.5 (练习) 背景图片

https://www.bilibili.com/video/BV1UJ411v7GX

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评测：这个视频一般，它重在结果，不便于跟着做