無視しちゃおう
import { LogBox } from 'react-native';
LogBox.ignoreLogs(['Setting a timer']);
Setting a timer for a long period of time, i.e. multiple minutes, is a performance and correctness issue on Android as it keeps the timer module awake, and timers can only be called when the app is in the foreground. See https://github.com/facebook/react-native/issues/12981 for more info