到顶部还可以继续下拉，头布局可以形成继续放大的效果
一个自定义的RatingBar
蓝牙项目,封装了蓝牙连接 包含传统蓝牙连接 包含BLE蓝牙连接 kotlin项目
蓝牙电子秤的连接 MAC版 也可以简单适配ios
上拉加载
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