Auffüllen von JSON von diesem link zur android-Listview

Ich versuche, die Anzeige der Elemente in listview aus JSON::

JsonURL- https://dl.dropboxusercontent.com/s/rhk01nqlyj5gixl/jsonparsing.txt?token_hash=AAHpfauVxJaC9Rkx_5abNtJnPFG04os7TZky1AhOuC5jEw


activity_main.xml

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

    <ListView
        android:id="@+id/listViewID"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" 
        android:layout_gravity="center">
    </ListView>

</LinearLayout>

JSONParser.java

package com.example.testjson;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

public class JSONParser {

    static InputStream is = null;
    static JSONArray jObj = null;
    static String json = "";

    //constructor
    public JSONParser() {

    }

    public JSONArray getJSONFromUrl(String url) {

        //Making HTTP request
        try {
            //defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);

            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();           

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        //try parse the string to a JSON object
        try {
            jObj = new JSONArray(json);
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        //return JSON String
        return jObj;

    }
}

row.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relativelay"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tvname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="5dip"
        android:maxLines="1"
        android:text="Name"
        android:textColor="@android:color/black"
        android:textSize="14dp"
        android:textStyle="bold" >
    </TextView>

    <TextView
        android:id="@+id/tvcity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvname"
        android:layout_marginLeft="5dip"
        android:layout_marginTop="3dip"
        android:maxLines="1"
        android:text="City"
        android:textColor="@android:color/black"
        android:textSize="14dp" >
    </TextView>

    <TextView
        android:id="@+id/tvbdate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvcity"
        android:layout_marginLeft="5dip"
        android:layout_marginTop="3dip"
        android:maxLines="1"
        android:text="Birthdate"
        android:textColor="@android:color/black"
        android:textSize="14dp" >
    </TextView>

    <TextView
        android:id="@+id/tvgender"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="15dip"
        android:maxLines="1"
        android:text="Gender"
        android:textColor="@android:color/black"
        android:textSize="14dp"
        android:textStyle="bold" >
    </TextView>

    <TextView
        android:id="@+id/tvage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/tvgender"
        android:layout_marginRight="15dip"
        android:layout_marginTop="3dip"
        android:maxLines="1"
        android:text="Age"
        android:textColor="@android:color/black"
        android:textSize="14dp" >
    </TextView>

</RelativeLayout>

MainActivity.java

package com.example.testjson;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

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

import android.os.Bundle;
import android.app.Activity;
import android.text.StaticLayout;
import android.view.Menu;

public class MainActivity extends Activity {

    private static String url="https://www.dropbox.com/s/rhk01nqlyj5gixl/jsonparsing.txt?dl=1";

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

        //Create a JSON parser Instance ----- Used JSON parser from Android
        JSONParser jParser=new JSONParser();

        //Getting JSON string from URL ------ Used JSON Array from Android
        JSONArray json=jParser.getJSONFromUrl(url);

        try {
            for(int i=0;i<json.length();i++)
            {
                JSONObject c=json.getJSONObject(i);//Used JSON Object from Android

                //Storing each Json in a string variable
                int AGE=c.getInt("age");
                String NAME=c.getString("name");
                String CITY=c.getString("city");
                String GENDER=c.getString("Gender");
                String BIRTHDATE=c.getString("birthdate");



            }
        } catch (JSONException e) {
            //TODO Auto-generated catch block
            e.printStackTrace();
        }

    }


}
  • Ich versuche, füllen Sie die Daten aus der JSON -, listView -, einige
    Mehrdeutigkeit bei der Besetzung MainActivity.java
  • was die Sammlung für diese Funktionalität ?
  • Irgendwelche Ideen, Das sieht eine einfache Aufgabe, aber für einen Anfänger wie mich seine
    was eine Menge von kämpfen zu lernen

Dank ,

Gute Frage ! .... Auch ich bin auf der Suche nach so etwas ..... und gute Erklärung über das problem !... Wird auf Antworten zu warten !

InformationsquelleAutor | 2013-08-01

Schreibe einen Kommentar