Question

我知道有很多用于Android HTTP Get，Post，Put的库或API。但是有人可以告诉我哪个库更适合发布和放置以及其他各种库

Answer 1

主要有两个用于网络相关操作的库，如发送接收数据或请求，响应e.t.c， 1）凌空抽射 2）改造

两者都是好的图书馆，两者都是灵活且易于管理的图书馆。

For Retrofit Click Here

对于齐射Click Here

Answer 2

如果您想通过应用向数据库发出请求，我建议您使用Google为其制作的库：Volley

您可以找到允许您发出POST或GET请求的教程like this one。

您还可以通过排球

咨询Google的documentation

Answer 3

你应该使用排球，这是最好的事情，我在这里上传一些代码来帮助你。

<强> ApplicationController.java

您必须在清单文件的应用程序标记

中添加此文件

import android.app.Application;
import android.text.TextUtils;

import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.Volley;

public class ApplicationController extends Application {

    public static final String TAG = "VolleyPatterns";
    private static ApplicationController sInstance;
    private RequestQueue mRequestQueue;

    public static synchronized ApplicationController getInstance() {
        return sInstance;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        sInstance = this;
    }

    public RequestQueue getRequestQueue() {
        if (mRequestQueue == null) {
            mRequestQueue = Volley.newRequestQueue(getApplicationContext());
        }

        return mRequestQueue;
    }

    public <T> void addToRequestQueue(Request<T> req, String tag) {
        req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);

        req.setRetryPolicy(new DefaultRetryPolicy(DefaultRetryPolicy.DEFAULT_TIMEOUT_MS,
                DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
                DefaultRetryPolicy.DEFAULT_BACKOFF_MULT
        ));

        VolleyLog.d("Adding request to queue: %s", req.getUrl());

        getRequestQueue().add(req);
    }

    public <T> void addToRequestQueue(Request<T> req) {

        req.setTag(TAG);

        req.setRetryPolicy(new DefaultRetryPolicy(DefaultRetryPolicy.DEFAULT_TIMEOUT_MS,
                DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
                DefaultRetryPolicy.DEFAULT_BACKOFF_MULT
        ));

        getRequestQueue().add(req);
    }

    public void cancelPendingRequests(Object tag) {
        if (mRequestQueue != null) {
            mRequestQueue.cancelAll(tag);
        }
    }
}

<强> CustomRequest.java

自定义连接数据库并获取数据的请求。

import android.app.ProgressDialog;
import android.content.Context;
import android.widget.Toast;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.TimeoutError;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.Map;

import raghav.bookthat.support.Constants;

public class CustomRequest {
    static final String[] response = new String[1];
    private StringRequestCompleteListener stringRequestCompleteListener;

    public CustomRequest(StringRequestCompleteListener stringRequestCompleteListener) {
        this.stringRequestCompleteListener = stringRequestCompleteListener;
    }

    public static String getResponse(String response) throws JSONException {
        JSONObject jsonObject = new JSONObject(response);
        if (jsonObject.getString("Error").equals("200")) {
            return jsonObject.getString("response");
        } else {
            return null;
        }
    }

    public void loadJSON(final HashMap<String, String> headers, final Context context, final ProgressDialog progressDialog) {
        if (headers != null) {
            StringRequest stringRequest = new StringRequest(Request.Method.POST, Constants.WEBSERVICE, new Response.Listener<String>() {
                @Override
                public void onResponse(String s) {
                    try {
                        response[0] = getResponse(s);
                        if (stringRequestCompleteListener != null && response[0] != null) {
                            stringRequestCompleteListener.onTaskCompleted(response[0]);
                        } else {
                            if (progressDialog != null) {
                                progressDialog.dismiss();
                            }
                        }
                    } catch (JSONException e) {
                        if (progressDialog != null) {
                            progressDialog.dismiss();
                        }
                        response[0] = null;
                    }
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError volleyError) {
                    if (volleyError instanceof TimeoutError) {
                        Toast.makeText(context, "Please Wait\n The Internet is Quite Slow Down Here", Toast.LENGTH_SHORT).show();
                        loadJSON(headers, context, progressDialog);
                    } else {
                        if (progressDialog != null) {
                            progressDialog.dismiss();
                        }
                    }
                }
            }) {
                @Override
                public Map<String, String> getParams() throws AuthFailureError {
                    return headers;
                }

                @Override
                public Priority getPriority() {
                    return Priority.IMMEDIATE;
                }

            };
            ApplicationController.getInstance().addToRequestQueue(stringRequest);
        }
    }
}

<强> StringRequestCompleteListener.java

侦听员处理凌空的反应

public interface StringRequestCompleteListener {
    void onTaskCompleted(String response);
}

使用自定义请求

HashMap<String, String> headers = new HashMap<>();
        headers.put("method", "createBooking");
        headers.put("PackageID", String.valueOf(bundle.getInt("PackageID")));
        headers.put("UserID", String.valueOf(sharedPreferencesHelper.getUserID()));
        headers.put("Price", txtTotalPrice.getText().toString());
        headers.put("TotalPerson", edTotalPerson.getText().toString());
        headers.put("BookingStartDateTime", txtStartDateTime.getText().toString());
        headers.put("BookingEndDateTime", txtEndDateTime.getText().toString());

        final ProgressDialog progress = SupportMethods.showProgressDialog(context);
        progress.show();

        new CustomRequest(new StringRequestCompleteListener() {
            @Override
            public void onTaskCompleted(String response) {
                progress.dismiss();
                if (response.equals("800")) {
                    Toast.makeText(context, "Location Already Booked On Given Time, \n Please Select Any Other Time Or Location", Toast.LENGTH_LONG).show();
                } else if (response.equals("400")) {
                    Toast.makeText(context, "Error Occurred While Booking, Please Try Again", Toast.LENGTH_LONG).show();
                } else {
                    Toast.makeText(context, "Location Booked Successfully", Toast.LENGTH_LONG).show();

                    startActivity(new Intent(context, ActivityDrawer.class)
                            .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
                    startService(new Intent(context, BackgroundUpdateService.class).putExtra(Constants.UPDATE,Constants.BOOKING_UPDATE));
                }
            }
        }).loadJSON(headers, context, progress);

<强>的AndroidManifest.xml

添加此权限

<uses-permission android:name="android.permission.INTERNET" />

将ApplicationController添加到Application Tag

<application
        android:name=".support.volley.ApplicationController"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:largeHeap="true"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"><application>

Answer 4

你用它来做Http .. httpclient-4.2.3.jar Download Link For Httpclient-4.2.3.jar

apache-httpcomponents-httpcore.jar Download Link for apche-httpcomponents

对使用

4 个答案: