If you need a delay like this, use a Swing Timer so you don't shut down the event thread during the sleep.

如果你需要一个延迟，这样，使用摆动定时器，所以你不要关闭事件线程在睡眠。

youdao

You see, rather than letting the device stay on standby like most other Android devices, Nikon uses a shut-down timer that activates once Android goes on standby.

ENGADGET: Nikon Coolpix S800c hands-on: a closer look at the Android camera (video)