Question

我正在尝试使用Volley库将数据发送到Andriod应用程序中的表单服务器。当我请求获取数据时，我的数据太大，但问题是凌空超时错误，我也使用了RetryPolicy，但问题是相同的。我该如何解决？

我已经尝试过RetryPolicy和AsynTask，但是我的问题无法解决。谁能告诉我如何解决这个问题？ //这里的主要功能...

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_search_member);

        initiateViews();
        searchViewCategory();


    }

//initiateViews function...
    private void initiateViews() {
        recyclerView = findViewById(R.id.search_category_recyle_view);
        mSearchView = findViewById(R.id.searchView);
        addMember = findViewById(R.id.addMember);
        requestQueue = Volley.newRequestQueue(this);
    }

    private void searchViewCategory() {
        mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {

                getData();
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                return false;
            }
        });
    }
//Get Data from Server function
public void getData()
{
    JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, "http://alfahd.witorbit.net/api.php?search_member=a&array=1", new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObjectresponse)
        {
            Toast.makeText(SearchMember.this, "" + response, Toast.LENGTH_SHORT).show();
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error)
        {
            error.printStackTrace();
            dialog.dismiss();
            Toast.makeText(SearchMember.this, "Error", Toast.LENGTH_SHORT).show();
        }
    });
    request.setRetryPolicy(new DefaultRetryPolicy(
            MY_SOCKET_TIMEOUT_MS,
            DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
            DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
    requestQueue.add(request);

}


The application may be doing too much work on its main thread.
VolleyTimeOutError()

Answer 1

因此，一开始强烈建议使用Volley Singleton模式以充分利用它。我的凌空单身班是这个。

/**
 * Created by MuhammadFaisal on 8/10/2017.
 */

public class VolleySingleton {
private static final int MAX = 2 * 1024 * 1024;
private static int MAX_SERIAL_THREAD_POOL_SIZE = 10;
private static VolleySingleton mSingletonInstance = null;
private final int MAX_CACHE_SIZE = 2 * 1024 * 1024; //2 MB
Context context = null;
private ImageLoader imageLoader;
private RequestQueue volleyRequestQueue;

private VolleySingleton(Context c)
{

    RequestQueue serialRequestQueue = prepareSerialRequestQueue(c);
    serialRequestQueue.start();
    context = c;

    volleyRequestQueue = Volley.newRequestQueue(c);
    imageLoader = new ImageLoader(volleyRequestQueue, new ImageLoader.ImageCache() {
        private LruCache<String, Bitmap> mCache = new LruCache<>((int) (Runtime.getRuntime().maxMemory() / 1024 / 8));

        @Override
        public Bitmap getBitmap(String url)
        {
            return mCache.get(url);
        }

        @Override
        public void putBitmap(String url, Bitmap bitmap)
        {
            mCache.put(url, bitmap);
        }
    });
}

public static VolleySingleton getInstance(Context context)
{
    if (mSingletonInstance == null)
    {
        mSingletonInstance = new VolleySingleton(context);
    }
    return mSingletonInstance;
}

public static RequestQueue prepareSerialRequestQueue(Context context)
{
    Cache cache = new DiskBasedCache(context.getCacheDir(), MAX);
    Network network = getNetwork();
    RequestQueue requestQueue;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN
            && Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT)
    {
        try
        {
            if (checkGooglePlayServices(context))
                ProviderInstaller.installIfNeeded(context);
        }
        catch (GooglePlayServicesRepairableException e)
        {
            // Indicates that Google Play services is out of date, disabled, etc.
            // Prompt the user to install/update/enable Google Play services.
            GooglePlayServicesUtil.showErrorNotification(e.getConnectionStatusCode(), context);
            // Notify the SyncManager that a soft error occurred.
            //syncResult.stats.numIOExceptions++;
            return null;
        }
        catch (GooglePlayServicesNotAvailableException e)
        {
            // Indicates a non-recoverable error; the ProviderInstaller is not able
            // to install an up-to-date Provider.
            // Notify the SyncManager that a hard error occurred.
            //GooglePlayServicesUtil.showErrorNotification(e.getConnectionStatusCode(), context);
            //syncResult.stats.numAuthExceptions++;
            return null;
        }

        HttpStack stack = null;
        try
        {
            stack = new HurlStack(null, new TLSSocketFactory());
        }
        catch (KeyManagementException e)
        {
            e.printStackTrace();
            Log.d("Your Wrapper Class", "Could not create new stack for TLS v1.2");
            stack = new HurlStack();
        }
        catch (NoSuchAlgorithmException e)
        {
            e.printStackTrace();
            Log.d("Your Wrapper Class", "Could not create new stack for TLS v1.2");
            stack = new HurlStack();
        }
        requestQueue = Volley.newRequestQueue(context, stack);
        return requestQueue;
    }
    else
        return new RequestQueue(cache, network, MAX_SERIAL_THREAD_POOL_SIZE);
}

private static Network getNetwork()
{
    HttpStack stack;
    String userAgent = "volley/0";
    if (Build.VERSION.SDK_INT >= 9)
    {
        stack = new HurlStack();
    }
    else
    {
        stack = null;
        //stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
    }
    return new BasicNetwork(stack);
}

private static boolean checkGooglePlayServices(Context con)
{
    switch (GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(con))
    {
        case ConnectionResult.SERVICE_MISSING:
            Log.d("googleError: ", Integer.toString(ConnectionResult.SERVICE_MISSING));
            //GoogleApiAvailability.getInstance().getErrorDialog(SplashScreen.this,ConnectionResult.SERVICE_MISSING,0).show();
            break;
        case ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED:
            Log.d("googleError: ", Integer.toString(ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED));
            //GoogleApiAvailability.getInstance().getErrorDialog(this,ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED,0).show();
            break;
        case ConnectionResult.SERVICE_DISABLED:
            Log.d("googleError: ", Integer.toString(ConnectionResult.SERVICE_DISABLED));
            //GoogleApiAvailability.getInstance().getErrorDialog(this,ConnectionResult.SERVICE_DISABLED,0).show();
            break;
    }
    return true;
}

public RequestQueue getVolleyRequestQueue()
{
    if (volleyRequestQueue == null)
    {
        // getApplicationContext() is key, it keeps you from leaking the
        // Activity or BroadcastReceiver if someone passes one in.
        volleyRequestQueue = Volley.newRequestQueue(context.getApplicationContext());
    }
    return volleyRequestQueue;
}

public ImageLoader getImageLoader()
{
    return imageLoader;
}
}

使用单例方式有很多好处，主要之一是它为您提供了一个可以处理所有网络请求的请求队列。现在，像这样初始化您的requestQueue：

private RequestQueue requestQueue;
if (requestQueue == null)
        requestQueue = VolleySingleton.getInstance(context).getVolleyRequestQueue();

您现在可以开始进行这样的网络调用，只是告诉您我使用相同的方法来调用端点并成功获得响应。

JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, "http://alfahd.witorbit.net/api.php?search_member=a&array=1", new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response)
        {
            volleyCallBack.onSuccess(response.toString());
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error)
        {
            JSONObject jsonObject;
            NetworkResponse networkResponse = error.networkResponse;
            if (networkResponse != null && networkResponse.data != null)
            {
                String jsonError = new String(networkResponse.data);
                if(jsonError.contains("500"))
                    createErrorDialog("Something went wrong. Try Later!","");
            }
            volleyCallBack.onFailure(error);
        }
    }) 
//        {
//            @Override
//            public byte[] getBody()
//            {
//                return jsonObject.toString().getBytes();
//            }
//
//            @Override
//            public Map<String, String> getHeaders()
//            {
//                Map<String, String> params = new HashMap<String, String>();
//                params.put("Authorization", "Bearer " + jwt);
//                params.put("Content-Type", "application/json");
//                return params;
//            }
//        };
    jsonObjectRequest.setRetryPolicy(new DefaultRetryPolicy(
            0,
            DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
            DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
    requestQueue.add(jsonObjectRequest);

我面临排球超时错误和mainThread错误

1 个答案: