使用Volley时的ANR效果

Question

我已经试着解决这个问题两天了。不幸的是，改进微乎其微。

我使用的是BottomNavigationView，它使用getSupportFragmentManager().beginTransaction().replace(...切换片段

每个片段在创建时都使用Volley调用API。示例：

public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_services, container, false);
....
callAPI();
}

private void callAPI() {
VolleyUtils.makeJsonObjectRequest(context, ..., new VolleyResponseListener() {
@Override
public void onError(String message) {
System.out.println("Error: " + message);
}

@Override
public void onResponse(String response) {
//JSON processing
//textView.setText(...);
}
}
}

VolleyUtils.java:

public class VolleyUtils {
public static void makeJsonObjectRequest(Context context, ..., final VolleyResponseListener listener) {
StringRequest jsonObjectRequest = new StringRequest
(Request.Method.POST, "API URL", listener::onResponse, error -> listener.onError(error.toString())) {
@Override
public byte[] getBody() {
//DATA
}
@Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
JSONObject responseObj = new JSONObject(jsonString);
jsonString = responseObj.getJSONObject("response").toString();
//System.out.println(jsonString); //TODO remove debug line
return Response.success(jsonString,
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException | JSONException e) {
return Response.error(new ParseError(e));
}
}
};
// Access the RequestQueue through singleton class.
VolleySingleton.getInstance(context).addToRequestQueue(jsonObjectRequest);
}
}

VolleySingleton.java:

public class VolleySingleton {
@SuppressLint("StaticFieldLeak")
private static VolleySingleton instance;
private RequestQueue requestQueue;
@SuppressLint("StaticFieldLeak")
private static Context ctx;
private VolleySingleton(Context context) {
ctx = context;
requestQueue = getRequestQueue();
}
public static synchronized VolleySingleton getInstance(Context context) {
if (instance == null)
instance = new VolleySingleton(context);
return instance;
}
public RequestQueue getRequestQueue() {
if (requestQueue == null)
requestQueue = Volley.newRequestQueue(ctx.getApplicationContext());
return requestQueue;
}
public <T> void addToRequestQueue(Request<T> req) {
getRequestQueue().add(req);
}
}

VolleyResponseListener:

public interface VolleyResponseListener {
void onError(String message);
void onResponse(String response);
}

问题是使用BottomNavigationView 切换片段时会出现ANR效应

我设法做到这一点的最佳改进是：

APIRunnable apiRunnable = new APIRunnable();
thread = new Thread(apiRunnable);
thread.start();
...
class APIRunnable implements Runnable {
@Override
public void run() {
callAPI();
}
}

但随着切换速度的加快，ANR效应仍会发生

I/Choreographer: Skipped 64 frames! The application may be doing too much work on its main thread.

我真的不知道该怎么解决了。我很乐意得到的任何帮助

谢谢

Answer 1

我解决了这个问题：

我没有意识到当我请求API时，我调用了一个生成POST数据的方法。

我现在用new Thread调用这个方法，然后调用API。

这解决了问题，即使快速切换，一切都很顺利。

然而，我也从Volley转到了Reform。

感谢Ivan对的帮助