Question

我尝试使用AsyncTask类使用android studio连接到我的本地主机xampp。这是AsyncTask，但是它给出了错误提示Failed to connect to /10.0.2.2:800

我尝试了我的真实IP地址cmd-> ipconfig IPV4和其他一些技巧，但是他们没有成功

belwow是我的应用程序结构

使用类的AsyncTask

package app.buil.land.food.doymaj.doymaj;

import android.app.AlertDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;

/**
 * Created by ProgrammingKnowledge on 1/5/2016.
 */
public class backGroundActivities extends AsyncTask<String,Void,String> {
    Context context;
    AlertDialog alertDialog;
    backGroundActivities (Context ctx) {
        context = ctx;
    }
    @Override
    protected String doInBackground(String... params) {
        String type = params[0];
        String login_url = "http://10.0.2.2:800/login.php";
        if(type.equals("login")) {
            try {
                String phone_number = params[1];
//                String password = params[2];
                URL url = new URL(login_url);
                HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
                httpURLConnection.setRequestMethod("POST");
                httpURLConnection.setDoOutput(true);
                httpURLConnection.setDoInput(true);
                OutputStream outputStream = httpURLConnection.getOutputStream();
                BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
                String post_data = URLEncoder.encode("phone_number","UTF-8")+"="+URLEncoder.encode(phone_number,"UTF-8");
                bufferedWriter.write(post_data);
                bufferedWriter.flush();
                bufferedWriter.close();
                outputStream.close();
                InputStream inputStream = httpURLConnection.getInputStream();
                BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
                String result="";
                String line="";
                while((line = bufferedReader.readLine())!= null) {
                    result += line;
                    Log.e("Line_from_php_server",result);
                }
                bufferedReader.close();
                inputStream.close();
                httpURLConnection.disconnect();
                return result;
            } catch (MalformedURLException e) {
                e.printStackTrace();


            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    @Override
    protected void onPreExecute() {
        alertDialog = new AlertDialog.Builder(context).create();
        alertDialog.setTitle("Login Status");
    }

    @Override
    protected void onPostExecute(String result) {
        alertDialog.setMessage(result);
        alertDialog.show();
    }

    @Override
    protected void onProgressUpdate(Void... values) {
        super.onProgressUpdate(values);
    }
}

这是我的MainActivity

package app.buil.land.food.doymaj.doymaj;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    EditText phone_Number;
    EditText user_Name;
    EditText pass_Word;
    Button singButton;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


     //   singButton = (Button)findViewById(R.id.sing_id);
     //   singButton.setOnClickListener(kyListener);
        phone_Number =(EditText)findViewById(R.id.mobile_id);
        user_Name =(EditText)findViewById(R.id.name_id);
        pass_Word =(EditText)findViewById(R.id.p_id);




    }

//    Push_Identity db = new Push_Identity(this,"CustomerDatabas.db",null,1);


    public boolean validate(EditText[] fields){
        for(int i = 0; i < fields.length; i++){
            EditText currentField = fields[i];

            if(currentField.getText().toString().length() <= 0){

                switch (i){

                    case 0:

                        Toast.makeText(getApplicationContext(),"شماره تلفن وارد نشده  ",Toast.LENGTH_LONG).show() ;
                        break;



                    case 1:

                        Toast.makeText(getApplicationContext(),"نام کاربری وارد نشده  ",Toast.LENGTH_LONG).show() ;
                        break;


                    case 2:

                        Toast.makeText(getApplicationContext(),"رمز وارد نشده  ",Toast.LENGTH_LONG).show() ;
                        break;

                }
                return false;
            }
        }
        return true;
    }



    //private View.OnClickListener kyListener = new View.OnClickListener() {
        public void send_number(View v) {
            // do something when the button is clicked
            // Yes we will handle click here but which button clicked??? We don't know


            boolean fieldsOK = validate(new EditText[] { phone_Number, user_Name, pass_Word });



                 if (fieldsOK ==true){

                          String Phon = phone_Number.getText().toString();
                          Toast.makeText(getApplicationContext(),Phon,Toast.LENGTH_LONG);
                          // the Tooast dose not display anything
                       //    it seems that the EditText is empty buy i enter the value in
                        // in it.
                          String type ="login";

                          backGroundActivities back = new backGroundActivities(this);
                          back.execute(type,Phon);
        //
                 }
        }
   // };



}

XML

        <EditText
            android:id="@+id/mobile_id"
            android:layout_width="match_parent"
            android:layout_height="43dp"
            android:background="@drawable/customized_edtitext"
            android:drawablePadding="15dp"
            android:paddingRight="10dp"
            android:paddingLeft="15dp"
            android:drawableRight="@drawable/ic_smartphone"
            android:elevation="2dp"
            android:textStyle="bold"
            android:hint="@string/register_phone_commnet"
            android:fontFamily="@font/iransansmedium"
            android:textSize="12sp"


            />


        <EditText
            android:id="@+id/name_id"
            android:layout_width="match_parent"
            android:layout_height="43dp"
            android:layout_below="@id/mobile_id"
            android:background="@drawable/customized_edtitext1"
            android:drawablePadding="15dp"
            android:paddingRight="10dp"
            android:paddingLeft="15dp"
            android:drawableRight="@mipmap/ic_user"
            android:elevation="2dp"
            android:textStyle="bold"
            android:hint="@string/register_user_commnet"
            android:fontFamily="@font/iransansmedium"
            android:textSize="12dp" />

        <EditText
            android:id="@+id/p_id"
            android:layout_width="match_parent"
            android:layout_height="43dp"
            android:layout_below="@+id/name_id"
            android:background="@drawable/customized_edtitext2"
            android:drawablePadding="15dp"
            android:paddingRight="10dp"
            android:paddingLeft="15dp"
            android:drawableRight="@mipmap/ic_unlocked"
            android:elevation="2dp"
            android:textStyle="bold"
            android:hint="@string/register_pass_commnet"
            android:fontFamily="@font/iransansmedium"
            android:textSize="12sp"
            android:paddingEnd="10dp" />

这是我的php页面的网址 enter image description here

还有更多信息：我已经安装了Genymotion，还安装了bluestack和VirtaulBox。他们对港口感到困惑吗？我的意思是这些软件可能导致Apache xampp端口及其端口冲突吗？

Answer 1

我的Xampp正在使用端口： 80 ，如下图所示。因此，在IP地址下方写为OkHttpClient.Builder httpClient = new OkHttpClient.Builder(); httpClient.addInterceptor(new Interceptor() { @Override public Response intercept(Interceptor.Chain chain) throws IOException { Request original = chain.request(); Request request = original.newBuilder() .method(original.method(), original.body()) .build(); return chain.proceed(request); } }; OkHttpClient client = httpClient.build(); Request request = new Request.Builder() .url("URL") .addHeader("Header", "123") .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { e.printStackTrace(); Log.d("OKHTTP3", e.getMessage()); // You get this failure runOnUiThread(() -> { }); } @Override public void onResponse(Call call, Response response) throws IOException { try { final String _body = response.body().string(); Log.d("OKHTTP3", _body); runOnUiThread(() -> { }); } catch (InterruptedIOException e) { runOnUiThread(() -> { // Or this exception depending when timeout is reached }); } } });对我有用。

Answer 2

如果您具有wifi，并且计算机和真实设备（移动设备）已连接到同一wifi，则可以使用NGROK软件工具在真实设备中运行和调试您的应用。

运行ngrok.exe并输入 ngrok http 80 ，它将为您提供一个如下图所示的地址。

只需在您使用IP地址的应用中使用该网址即可。最好使用。

Answer 3

此答案假定浏览器屏幕截图显示页面成功加载。我相信错误页面会更灰一些。

可能有一个防火墙问题。由于您使用的是非标准端口，因此XAMPP所安装的防火墙例外可能无法解决。

转到Windows防火墙高级设置->入站规则。现在，添加一条允许TCP端口800上的流量的规则。请确保取消选中公共配置文件，这样，如果您使用的是公共wifi，则没有人可以连接到该应用程序。

如果您的PHP应用程序可访问，请使用智能手机的浏览器进行检查。

无法使用Android Studio连接到“ xampp服务器本地主机”

3 个答案: