Web Service avec client Android

**mathurin2010** · 11/11/2014, 14h54

Bonjour,

J'essaye de consommer un web service comme client Android qui affiche les informations d'un pays comme la température, l'humidité et autres.

Ca fonctionne si on met un pays qui existe mais si on met un pays qui n'existe pas l'application se bloque en demandant une fermeture de l'application.

J'aimerais que si on entre un pays invalide, un message popup s'affiche comme ''pays invalide".

Voici le code :
activity_main.xml

Code :

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<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="15dp"
        android:text="@string/location"
        android:textAppearance="?android:attr/textAppearanceMedium" />
 
    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView1"
        android:layout_alignParentRight="true"
        android:ems="10" />
 
    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="19dp"
        android:text="@string/temperature"
        android:textAppearance="?android:attr/textAppearanceSmall" />
 
    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView3"
        android:layout_below="@+id/textView3"
        android:layout_marginTop="32dp"
        android:text="@string/humidity"
        android:textAppearance="?android:attr/textAppearanceSmall" />
 
    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView4"
        android:layout_below="@+id/textView4"
        android:layout_marginTop="21dp"
        android:text="@string/pressure"
        android:textAppearance="?android:attr/textAppearanceSmall" />
 
    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/textView3"
        android:layout_toRightOf="@+id/textView3"
        android:ems="10" />
 
    <EditText
        android:id="@+id/editText3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView3"
        android:layout_alignBottom="@+id/textView3"
        android:layout_alignLeft="@+id/editText2"
        android:ems="10" />
 
    <EditText
        android:id="@+id/editText4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/textView5"
        android:layout_alignLeft="@+id/editText1"
        android:ems="10" />
 
    <EditText
        android:id="@+id/editText5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView5"
        android:layout_alignBottom="@+id/textView5"
        android:layout_alignRight="@+id/editText4"
        android:ems="10" />
 
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="40dp"
        android:text="@string/country"
        android:textAppearance="?android:attr/textAppearanceSmall" />
 
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/editText3"
        android:layout_below="@+id/editText5"
        android:layout_marginTop="78dp"
        android:onClick="open"
        android:text="@string/weather" />
 
</RelativeLayout>

MainActivity

Code :

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package com.example.jsonparser;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
 
public class MainActivity extends Activity {
 
    private String url1 = "http://api.openweathermap.org/data/2.5/weather?q=";
    private EditText location, country, temperature, humidity, pressure, message;
    private HandleJSON obj;
    private Button bouton;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        location = (EditText) findViewById(R.id.editText1);
        country = (EditText) findViewById(R.id.editText2);
        temperature = (EditText) findViewById(R.id.editText3);
        humidity = (EditText) findViewById(R.id.editText4);
        pressure = (EditText) findViewById(R.id.editText5);
        bouton = (Button) findViewById(R.id.button);
        bouton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                open(v);
            }
        }); 
    }
 
    public void open(View view) {
        String url = location.getText().toString();
        String finalUrl = url1 + url;
        obj = new HandleJSON(finalUrl);
        obj.fetchJSON();
 
        while (obj.parsingComplete);
        country.setText(obj.getCountry());
        temperature.setText(obj.getTemperature());
        humidity.setText(obj.getHumidity());
        pressure.setText(obj.getPressure());
    }
}

HandleJSON

Code :

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package com.example.jsonparser;
 
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
 
import org.json.JSONObject;
 
import android.annotation.SuppressLint;
 
public class HandleJSON {
 
    private String country = "county";
    private String temperature = "temperature";
    private String humidity = "humidity";
    private String pressure = "pressure";
    private String urlString = null;
 
    public volatile boolean parsingComplete = true;
 
    public HandleJSON(String url) {
        this.urlString = url;
    }
 
    public String getCountry() {
        return country;
    }
 
    public String getTemperature() {
        return temperature;
    }
 
    public String getHumidity() {
        return humidity;
    }
 
    public String getPressure() {
        return pressure;
    }
 
    @SuppressLint("NewApi")
    public void readAndParseJSON(String in) {
        try {
            if (!in.equals("")) {
            JSONObject reader = new JSONObject(in);
 
            JSONObject sys = reader.getJSONObject("sys");
            country = sys.getString("country");
 
            JSONObject main = reader.getJSONObject("main");
            temperature = main.getString("temp");
            pressure = main.getString("pressure");
            humidity = main.getString("humidity");
            }
            parsingComplete = false;
 
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
 
    public void fetchJSON() {
        Thread thread = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    URL url = new URL(urlString);
                    String data = null;
                    InputStream stream = null;
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    conn.setReadTimeout(10000 /* milliseconds */);
                    conn.setConnectTimeout(15000 /* milliseconds */);
                    conn.setRequestMethod("GET");
                    conn.setDoInput(true);
                    conn.connect();
                    if (conn.getResponseCode() != 200) {
                        stream = conn.getErrorStream();
                        data = "";    
                        readAndParseJSON(data);
                        stream.close();
                    }
                    else {
                    stream = conn.getInputStream();
                    data = convertStreamToString(stream);    
                    readAndParseJSON(data);
                    stream.close();
                    }
 
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
 
        thread.start();
    }
 
    @SuppressWarnings("resource")
    static String convertStreamToString(java.io.InputStream is) {
        java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");
        return s.hasNext() ? s.next() : "";
    }
}

Quelqu'un saurait-il m'indiquer comment faire ?

Merci d'avance pour votre aide.

Web Service avec client Android

API standards et tierces Android

Mode arborescent

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