Android 如何使用 Volley 网络请求队列？
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How do I use the Volley network request queue?
提问by CQM
I .add(new network calls to my Volley Request Queue which I have created as a singleton as suggested. But I always immediately .start()these network calls. This is always done as an action in an activity or a fragment.
我按照建议将.add(新网络调用到我已创建为单例的 Volley 请求队列。但我总是立即.start()拨打这些网络电话。这始终作为活动或片段中的操作完成。
The addmethod cannot even be chained into a startmethod, like .add(new volley request).start()
该add方法甚至不能链接到一个start方法中，例如.add(new volley request).start()
So this assumes I am actually managing (or wanting to manage) a network queue somewhere, outside of the way Volley handles its queue, I guess. Should I be sending these things to an IntentService and listening for the IntentService to send a response back to my Fragment/Activity?
所以这假设我实际上正在某处管理（或想要管理）网络队列，我猜是在 Volley 处理其队列的方式之外。我应该将这些东西发送到 IntentService 并监听 IntentService 将响应发送回我的 Fragment/Activity 吗？
回答by vedant
If you create a requestQueueas:
如果您创建一个requestQueue：
requestQueue = Volley.newRequestQueue(mAppContext);
you will not need start().
你不需要start().
According to docs of Volley.RequestQueue: "Creates a default instance of the worker pool and calls RequestQueue.start()on it."
根据以下文档Volley.RequestQueue：“创建工作池的默认实例并调用RequestQueue.start()它。”
Hence you can see why you never needed to call start()yourself.
因此你可以明白为什么你从来不需要给start()自己打电话。
However, if you create a requestQueueas (as shown in the official reference):
但是，如果您创建一个requestQueueas（如官方参考所示）：
RequestQueue mRequestQueue;
// Instantiate the cache
Cache cache = new DiskBasedCache(getCacheDir(), 1024 * 1024); // 1MB cap
// Set up the network to use HttpURLConnection as the HTTP client.
Network network = new BasicNetwork(new HurlStack());
// Instantiate the RequestQueue with the cache and network.
mRequestQueue = new RequestQueue(cache, network);
// Start the queue
mRequestQueue.start();
start()will have to be called.
start()将不得不被调用。
PS: I get the documentation as provided in the source code itself. IDEs are able to extract them effortlessly. I just hover over the method/class name whose document I need and press CTRL (in android-studio).
PS：我得到了源代码本身提供的文档。IDE 能够毫不费力地提取它们。我只是将鼠标悬停在我需要其文档的方法/类名称上，然后按 CTRL（在 android-studio 中）。
回答by Udi Oshi
As a volley user I can tell you that I have never called .start() method. all the requests i've added to the queue started automatically, I used singleton class like you did.
作为一个凌空用户，我可以告诉你，我从未调用过 .start() 方法。我添加到队列中的所有请求都会自动启动，我像您一样使用了单例类。
