当DB插入失败时将RetryWhen添加到Single

import io.reactivex.Single;
import io.reactivex.functions.Function;

Single<Boolean> insertDataToDB() {
    return Single.create(emitter -> {
        // 执行DB插入操作
        boolean success = insertData();
        
        if (success) {
            emitter.onSuccess(true);
        } else {
            emitter.onError(new Throwable("DB插入失败"));
        }
    });
}

insertDataToDB()
    .retryWhen(new Function<Observable<Throwable>, ObservableSource<?>>() {
        @Override
        public ObservableSource<?> apply(Observable<Throwable> throwableObservable) throws Exception {
            // 在这里实现重试逻辑
            return throwableObservable
                .zipWith(Observable.range(1, 3), (throwable, retryCount) -> retryCount)
                .flatMap(retryCount -> {
                    if (retryCount <= 3) {
                        // 添加延迟，例如每次重试之间延迟1秒
                        return Observable.timer(1, TimeUnit.SECONDS);
                    } else {
                        // 重试次数超过3次，不再重试
                        return Observable.error(new Throwable("重试次数超过限制"));
                    }
                });
        }
    })
    .subscribe(success -> {
        // 插入成功的处理逻辑
    }, error -> {
        // 插入失败的处理逻辑
    });