Androidはksoap2を使用してwebserviceに接続できません

Question

w3schools webserviceに接続する際に問題が発生しました。私はアンドロイドのstudioでksoap2ライブラリを使用してwebservicesを実装しようとしています。返す値はハードコーディングされています画面がロードされるとすぐに何かが起こりますが、私はwebservice.Pleaseを打つと思います。

マニフェストファイル>

のAndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?> 
     <manifest xmlns:android="http://schemas.android.com/apk/res/android" 
      package="com.example.mjivan.webservicestut" > 

      <application 

       android:allowBackup="true" 
       android:icon="@mipmap/ic_launcher" 
       android:label="@string/app_name" 

       android:supportsRtl="true" 
       android:theme="@style/AppTheme" > 
       <activity android:name=".MainActivity" > 
        <intent-filter> 
         <action android:name="android.intent.action.MAIN" /> 

         <category android:name="android.intent.category.LAUNCHER" /> 
        </intent-filter> 
       </activity> 
      </application> 
      <uses-permission android:name="android.permission.INTERNET"></uses-permission> 
     </manifest> 

MainActivity.java

 package com.example.mjivan.webservicestut; 

import android.app.Activity; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

import org.ksoap2.SoapEnvelope; 
import org.ksoap2.serialization.SoapObject; 
import org.ksoap2.serialization.SoapPrimitive; 
import org.ksoap2.serialization.SoapSerializationEnvelope; 
import org.ksoap2.transport.AndroidHttpTransport; 
import org.ksoap2.transport.HttpTransportSE; 

public class MainActivity extends Activity { 

    private TextView txt; 
    private String celsius; 
    private static final String SOAP_ACTION = "https://www.w3schools.com/xml/tempconvert.asmx?op=CelsiusToFahrenheit"; 
    private static final String METHOD_NAME = "CelsiusToFahrenheit"; 
    private static final String NAMESPACE = "https://www.w3schools.com/"; 
    private static final String URL = "https://www.w3schools.com/xml/tempconvert.asmx"; 

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


     final EditText edt = (EditText) findViewById(R.id.value_to_convert); 
     Button btn = (Button) findViewById(R.id.convert); 
     txt = (TextView) findViewById(R.id.answer); 
    } 

     private class LongOperation extends AsyncTask<String, Void,String> { 

      @Override 
      protected String doInBackground(String... params) { 
       SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME); 
       Request.addProperty("Celsius", "32"); 


       SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
       soapEnvelope.dotNet = true; 
       soapEnvelope.setOutputSoapObject(Request); 

       HttpTransportSE aht = new HttpTransportSE(URL); 
       try { 
        aht.call(SOAP_ACTION, soapEnvelope); 
        SoapPrimitive resultString = (SoapPrimitive) soapEnvelope.getResponse(); 
        return "" + resultString; 
        //txt.setText("Status :" + resultString); 
       } catch (Exception e) { 

        return null; 
       } 
      } 
       @Override 
       protected void onPostExecute (String result) 
       { 
        TextView txt = (TextView) findViewById(R.id.answer); 
        txt.setText(result); // txt.setText(result); 
        // might want to change "executed" for the returned string passed 
        // into onPostExecute() but that is upto you 
       } 

       @Override 
       protected void onPreExecute() 
       { 

       } 


       @Override 
       protected void onProgressUpdate (Void...values) 
       { 

       } 

     } 



} 

0あなたのコードでは

activity_main.xml

//layout file 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
     xmlns:tools="http://schemas.android.com/tools" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical"> 


     <EditText 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/value_to_convert" /> 

     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Convert" 
      android:id="@+id/convert" 
      android:layout_gravity="center_horizontal" /> 

     <TextView 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/answer" 
      android:textColor="@color/background_floating_material_dark" /> 
    </LinearLayout> 

Logcat

 03-14 11:47:41.051 15992-15992/com.example.mjivan.webservicestut I/InjectionManager: Inside getClassLibPath caller 
03-14 11:47:41.051 15992-15992/com.example.mjivan.webservicestut W/System: ClassLoader referenced unknown path: /data/app/com.example.mjivan.webservicestut-1/lib/arm64 
03-14 11:47:41.061 15992-15992/com.example.mjivan.webservicestut W/ResourcesManager: getTopLevelResources: /data/app/com.example.mjivan.webservicestut-1/base.apk/1.0 running in com.example.mjivan.webservicestut rsrc of package com.example.mjivan.webservicestut 
03-14 11:47:41.061 15992-15992/com.example.mjivan.webservicestut I/InjectionManager: Inside getClassLibPath + mLibMap{0=, 1=} 
03-14 11:47:41.061 15992-15992/com.example.mjivan.webservicestut D/ResourcesManager: For user 0 new overlays fetched Null 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut W/System: ClassLoader referenced unknown path: /data/app/com.example.mjivan.webservicestut-1/lib/arm64 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut D/Minikin: FontFamily bestFont == NULL, so return vacant FakedFont 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut D/Minikin: FontFamily bestFont == NULL, so return vacant FakedFont 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut D/Minikin: FontFamily bestFont == NULL, so return vacant FakedFont 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut D/Minikin: FontFamily bestFont == NULL, so return vacant FakedFont 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut D/Minikin: FontFamily bestFont == NULL, so return vacant FakedFont 
03-14 11:47:43.191 15992-15992/com.example.mjivan.webservicestut D/Minikin: FontFamily bestFont == NULL, so return vacant FakedFont 
03-14 11:47:43.201 15992-15992/com.example.mjivan.webservicestut D/InjectionManager: InjectionManager 
03-14 11:47:43.201 15992-15992/com.example.mjivan.webservicestut D/InjectionManager: fillFeatureStoreMap com.example.mjivan.webservicestut 
03-14 11:47:43.201 15992-15992/com.example.mjivan.webservicestut I/InjectionManager: Constructor com.example.mjivan.webservicestut, Feature store :{} 
03-14 11:47:43.201 15992-15992/com.example.mjivan.webservicestut I/InjectionManager: featureStore :{} 
03-14 11:47:43.211 15992-15992/com.example.mjivan.webservicestut W/ResourcesManager: getTopLevelResources: /data/app/com.example.mjivan.webservicestut-1/base.apk/1.0 running in com.example.mjivan.webservicestut rsrc of package com.example.mjivan.webservicestut 
03-14 11:47:43.211 15992-15992/com.example.mjivan.webservicestut W/ResourcesManager: getTopLevelResources: /data/app/com.example.mjivan.webservicestut-1/base.apk/1.0 running in com.example.mjivan.webservicestut rsrc of package com.example.mjivan.webservicestut 
03-14 11:47:43.251 15992-15992/com.example.mjivan.webservicestut D/ClipboardExManager: no knox 
03-14 11:47:43.261 15992-15992/com.example.mjivan.webservicestut D/Activity: performCreate Call Injection manager 
03-14 11:47:43.261 15992-15992/com.example.mjivan.webservicestut I/InjectionManager: dispatchOnViewCreated > Target : com.example.mjivan.webservicestut.MainActivity isFragment :false 
03-14 11:47:43.271 15992-15992/com.example.mjivan.webservicestut D/SecWifiDisplayUtil: Metadata value : SecSettings2 
03-14 11:47:43.271 15992-15992/com.example.mjivan.webservicestut D/ViewRootImpl: #1 mView = com.android.internal.policy.PhoneWindow$DecorView{b756f4e I.E...... R.....ID 0,0-0,0} 
03-14 11:47:43.271 15992-16417/com.example.mjivan.webservicestut D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true 
03-14 11:47:43.351 15992-16417/com.example.mjivan.webservicestut D/libEGL: loaded /vendor/lib64/egl/libGLES_mali.so 
03-14 11:47:43.361 15992-16417/com.example.mjivan.webservicestut D/libEGL: eglInitialize EGLDisplay = 0x7f990ff178 
03-14 11:47:43.361 15992-16417/com.example.mjivan.webservicestut I/OpenGLRenderer: Initialized EGL, version 1.4 

                        [ 03-14 11:47:43.371 15992:16417 D/   ] 
                        ro.exynos.dss isEnabled: 0 
03-14 11:47:43.371 15992-16417/com.example.mjivan.webservicestut D/mali_winsys: new_window_surface returns 0x3000, [1440x2560]-format:1 
03-14 11:47:43.391 15992-15992/com.example.mjivan.webservicestut W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView) 
03-14 11:47:43.391 15992-15992/com.example.mjivan.webservicestut W/DisplayListCanvas: DisplayListCanvas is started on unbinded RenderNode (without mOwningView) 
03-14 11:47:43.391 15992-16417/com.example.mjivan.webservicestut D/libGLESv1: DTS_GLAPI : DTS is not allowed for Package : com.example.mjivan.webservicestut 
03-14 11:47:43.481 15992-15992/com.example.mjivan.webservicestut D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 96 - 0, 0) vi=Rect(0, 96 - 0, 0) or=1 
03-14 11:47:43.501 15992-15992/com.example.mjivan.webservicestut I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@a39acb5 time:30405778 

Answer 1

あなたのネットワークオペレーションを実行するために任意のスレッドやAsyncTaskを使用していません。あなたがエラーNetworkOnMainThreadException

がコードのあなたの部分を追加取得している理由は、あなたがそれをサブクラス化する必要があり、私はAsyncTaskを使用するにはAsyncTask

private class LongOperation extends AsyncTask<String, Void, String> { 

     @Override 
     protected String doInBackground(String... params) { 
      SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME); 
       Request.addProperty("Celsius", "32"); 


       SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
       soapEnvelope.dotNet = true; 
       soapEnvelope.setOutputSoapObject(Request); 

       HttpTransportSE aht = new HttpTransportSE(URL); 
       try { 
        aht.call(SOAP_ACTION, soapEnvelope); 
        SoapPrimitive resultString = (SoapPrimitive) soapEnvelope.getResponse(); 
      return ""+resultString; 
        txt.setText("Status :" + resultString); 
       } catch (Excep 

      return null; 
     } 

     @Override 
     protected void onPostExecute(String result) { 
      TextView txt = (TextView) findViewById(R.id.output); 
      txt.setText("Executed"); // txt.setText(result); 
      // might want to change "executed" for the returned string passed 
      // into onPostExecute() but that is upto you 
     } 

     @Override 
     protected void onPreExecute() {} 

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

---

に怒鳴る入れます。 AsyncTaskは、ジェネリックとバリアを使用します。パラメータは次のとおりです。AsyncTask <TypeOfVarArgParams, ProgressValue, ResultValue>

​​メソッドを使用してAsyncTaskを開始します。このexecute（）メソッドは、doInBackground()メソッドとonPostExecute()メソッドを呼び出します。

TypeOfVarArgParamsは、入力としてdoInBackground()メソッドに渡されます。進捗情報にProgressValueが使用され、メソッドからResultValueを返す必要があります。このパラメータは、パラメータとしてonPostExecute()に渡されます。

doInBackground()メソッドには、バックグラウンドスレッドで実行されるコーディング命令が含まれています。このメソッドは別のスレッドで自動的に実行されます。

onPostExecute()メソッドは、再度ユーザーインターフェイススレッドと同期し、更新を許可します。このメソッドは、doInBackground()メソッドが終了するとフレームワークによって呼び出されます。