Merge #708 into sdk602patch0626 from refs/changes/708/head

Merge #708 into sdk602patch0626 from refs/changes/708/head

Code review from 胡传军

* refs/changes/708/head: (5 commits squashed)

  - 修改br连接接口 改用消息机制 增加回连判断 实际实现传统蓝牙开关关闭则br连接不上(有BUG)

  - Merge branch 'sdk602patch0626' of https://codeup.aliyun.com/64191456b9581d62e8f81ac0/FD230 into 0626

  - 增加连接中 UI 及部分蓝牙问题修正

  - 重新打开br广播

  - 合并

Signed-off-by: aliyun8003852482 <1224667075@qq.com>
Reviewed-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
Merged-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
link: https://codeup.aliyun.com/64191456b9581d62e8f81ac0/FD230/change/708