无法解析 ListenableWorker 中的符号 'CallbackToFutureAdapter'

Question

我正在根据 this official documentation from google

实现一个 ListenableWorker class

我收到以下错误无法解析符号 'CallbackToFutureAdapter'

下面是我尝试实现的方法

return CallbackToFutureAdapter.getFuture(completer -> {
            Callback callback = new Callback() {
                int successes = 0;

                @Override
                public void onFailure(Call call, IOException e) {
                    completer.setException(e);
                }

                @Override
                public void onResponse(Call call, Response response) {
                    ++successes;
                    if (successes == 100) {
                        completer.set(Result.success());
                    }
                }
            };

            completer.addCancellationListener(cancelDownloadsRunnable, executor);

            for (int i = 0; i < 100; ++i) {
                downloadAsynchronously("https://www.example.com", callback);
            }
            return callback;
        });

我应该导入什么来解析 CallbackToFutureAdapter 我已经在我的应用级别 Android X 中实现了 gradle

Answer 1

只需添加以下导入：

implementation "androidx.concurrent:concurrent-futures:1.1.0"

根据文档AndroidX Concurrent libraries