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こんにちは、私はすでにスマートフォン アプリを作成していますが、現在、アプリをタブレットと互換性を持たせるためのプロジェクトに取り組んでいます。今私はフラグメントを使用していますこれは私の最初のフラグメントを使用しているので、あなたのアドバイスが必要な理由です.助けてください.コードの例を教えてください. すでに多くの感謝

私のコード私の「ニュース」クラス：

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

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

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

public class Nieuws extends FragmentActivity{

    // Connection detector
    //ConnectionDetector cd;

    // Alert dialog manager
    //AlertDialogManager alert = new AlertDialogManager();

    // Progress Dialog
    //private ProgressDialog pDialog;

    private static String URL = "http://localhost/fetch.php?page=2&android";

    // JSON Node namen
    static final String TAG_DATA = "data";
    static final String TAG_ID = "id";
    static final String TAG_CATEGORY = "category";
    static final String TAG_TITLE = "title";
    static final String TAG_AUTHOR = "author";
    static final String TAG_DATE = "date";
    static final String TAG_INTRODUCTION = "introduction";
    static final String TAG_CONTENT = "content";
    static final String TAG_THUMBNAIL = "thumbnail";
    static final String TAG_MEDIA = "media";
    static final String TAG_SOURCE = "source";
    static final String TAG_LINKEDMEDIA = "linkedMedia"; //array waarin de plaatjes zitten*/

    // Nieuws JSONArray
    JSONArray newsArray;

    ListView list;
    LazyAdapter adapter;

    private PullToRefreshListView mPullRefreshListView;

    ArrayList<HashMap<String, String>> newsList; 

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.nieuws);
    //list=(ListView)findViewById(R.id.list);
    mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);

/*    FragmentManager fm = getSupportFragmentManager();
    FragmentTransaction ft = fm.beginTransaction();

    StartFragment myFragment = new StartFragment();
    ft.add(R.id.myFragment, myFragment);
    ft.commit();*/

    /*  cd = new ConnectionDetector(getApplicationContext());

    // Check for internet connection
    if (!cd.isConnectingToInternet()) {
        // Internet Connection is not present
        alert.showAlertDialog(Nieuws.this, "Internet Connectie Error", "Zorg voor een werkende internet connectie", false);
        // stop executing code by return
        return;
    }*/

    // Set a listener to be invoked when the list should be refreshed.
    mPullRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() {
        @Override
        public void onRefresh(PullToRefreshBase<ListView> refreshView) {

            // Do work to refresh the list here.
            new GetJSONData().execute();
        }
    });

    //Async 
    new GetJSONData().execute();

}


class GetJSONData extends AsyncTask<Void, Void, ArrayList<HashMap<String, String>>>{

    /**
     * Before starting background thread Show Progress Dialog
     */
    @Override
    protected void onPreExecute(){
        super.onPreExecute();
        //pDialog = new ProgressDialog(Nieuws.this);
        //pDialog.setMessage("Nieuws laden ...");
        //pDialog.setIndeterminate(false);
        //pDialog.setCancelable(false);
        //pDialog.show();   
    }

    /**
     * Get de json
     */
@Override
protected ArrayList<HashMap<String, String>> doInBackground(Void... arg0) {
    // Hashmap voor listView
    final ArrayList<HashMap<String, String>> newsList = new ArrayList<HashMap<String, String>>();

    // Maak een JSON Parser instance
    JSONParser jParser = new JSONParser();

    // Pakt JSON string uit URL
    JSONObject json = jParser.getJSONFromUrl(URL);


    try{
        // Pakt de Array van Nieuwsartikelen
        newsArray = json.getJSONArray(TAG_DATA);

        // Loop door alle Nieuwsartikels
        for(int i=0; i < newsArray.length(); i++){
            JSONObject c = newsArray.getJSONObject(i);

            // Het plaatsen van elk json item in variabele
            String title = c.getString(TAG_TITLE);
            String content = c.getString(TAG_CONTENT);
            String date = c.getString(TAG_DATE);
            //String introduction = c.getString(TAG_INTRODUCTION);
            String thumbnail = c.getString(TAG_THUMBNAIL);
            String linkedMedia = c.getString(TAG_LINKEDMEDIA);

            //String thumbnailName = c.getString(TAG_THUMBNAIL);
            //String thumbnailFormat = "http://iappministrator.com/mooiwark/media/%s";
            //String thumbnail = String.format(thumbnailFormat, thumbnailName);

            // maak een nieuwe HashMap
            HashMap<String, String> map = new HashMap<String, String>();

            // voeg elk item child node in de Hashmap -> value
            map.put(TAG_TITLE, title);
            map.put(TAG_CONTENT, content);
            map.put(TAG_DATE, date);
            //map.put(TAG_INTRODUCTION, introduction);
            map.put(TAG_THUMBNAIL, thumbnail);
            map.put(TAG_LINKEDMEDIA, linkedMedia);


            // voeg de HashList toe aan ArrayList
            newsList.add(map);

             // Click event for single list row
           mPullRefreshListView.setOnItemClickListener(new OnItemClickListener(){
            //list.setOnItemClickListener(new OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {

                    HashMap<String, String> map = newsList.get(position - 1);
                     Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);

                    //Intent in = new Intent(SingleMenuItemActivity.this, org.scout.android.library.LibraryDetail.class);
                    in.putExtra(TAG_TITLE, map.get(TAG_TITLE));
                    in.putExtra(TAG_CONTENT, map.get(TAG_CONTENT));                         
                    in.putExtra(TAG_DATE, map.get(TAG_DATE));
                    //in.putExtra(TAG_INTRODUCTION, map.get(TAG_INTRODUCTION));
                    in.putExtra(TAG_THUMBNAIL, map.get(TAG_THUMBNAIL));
                    in.putExtra(TAG_LINKEDMEDIA, map.get(TAG_LINKEDMEDIA));

                    startActivity(in);

                }
            });
        }
    } catch(JSONException e){
        e.printStackTrace();
    }
    return newsList;
}
@Override
protected void onPostExecute(ArrayList<HashMap<String, String>> result) {

    //De items worden ingeladen
    adapter=new LazyAdapter(Nieuws.this, result, R.layout.list_row, 
            new String[]{TAG_TITLE, TAG_CONTENT, TAG_DATE, TAG_THUMBNAIL}, new int[] {
            R.id.title, R.id.subtitle, R.id.date, R.id.list_image});   //TAG_INTRODUCTION mist nog 
    //list.setAdapter(adapter);
    mPullRefreshListView.setAdapter(adapter);

    // dismiss the dialog after getting all deelnemers
    //pDialog.dismiss();

    mPullRefreshListView.onRefreshComplete();

    super.onPostExecute(result);
        }
    }
}

このアクティビティでは、通常、クリック時にコンテンツをロードします。このクラスは、フラグメント クラス「SingleMenuItemActivity」クラスに変換しようとしたクラスです。

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

public class SingleMenuItemActivity  extends Fragment {

    // JSON node keys
    private static final String TAG_TITLE = "title";
    private static final String TAG_CONTENT = "content";
    private static final String TAG_DATE = "date";
    private static final String TAG_LINKEDMEDIA = "linkedMedia";
    //private static final String TAG_THUMBNAIL = "thumbnail";

    // Connection detector
    ConnectionDetector cd;

    // Alert dialog manager
    AlertDialogManager alert = new AlertDialogManager();

    /*@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.single_list_item);*/
   View view;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        view = inflater.inflate(R.layout.single_list_item, container, false);

        return view;

        cd = new ConnectionDetector(getActivity().getApplicationContext());

        // Check for internet connection
        if (!cd.isConnectingToInternet()) {
            // Internet Connection is not present
            alert.showAlertDialog(getActivity(), "Internet Connectie Error", "Zorg voor een werkende internet connectie", false);
            // stop executing code by return
            return;
        }

        // getting intent data

        Intent in = getIntent().getExtras();

        //final String image_url = in.getStringExtra(TAG_THUMBNAIL);
        final String image_url = in.getStringExtra(TAG_LINKEDMEDIA);

        ImageView imgv = (ImageView) getView().findViewById(R.id.images_label);
        ImageLoader imageLoader = new ImageLoader(getActivity().getApplicationContext());
        imageLoader.DisplayImage(image_url, imgv);

        // Get JSON values from previous intent
        String title = in.getStringExtra(TAG_TITLE);
        String date = in.getStringExtra(TAG_DATE);
        String message = in.getStringExtra(TAG_CONTENT);
        //String images = in.getStringExtra(TAG_IMAGES);
        //Bitmap bitmap = in.getParcelableExtra(TAG_IMAGES);
        //ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image);

        // Displaying all values on the screen
        TextView lblTitle = (TextView)getView().findViewById(R.id.title_label);
        TextView lblDate = (TextView) getView().findViewById(R.id.date_label);
        TextView lblMessage = (TextView) getView().findViewById(R.id.message_label);
        //ImageView lblImages = (ImageView) findViewById(R.id.images_label); 
        //TextView lblImages = (TextView) findViewbyId(R.id.images_label);



        // loader image
        //int loader = R.drawable.loader;
        System.out.println("Ja en nu werkt het niet meer");

        // image url
        //String image_url = "http://d24w6bsrhbeh9d.cloudfront.net/photo/5614379_460s.jpg";

       //ImageLoader imgLoader = new ImageLoader(getApplicationContext());
        //-imgLoader.DisplayImage(song.get(CustomizedListView.TAG_IMAGES), lblImages);
        System.out.println("Error? haha bam jammer dan:");
       //imgLoader.DisplayImage(images, lblImages);
        //System.out.println("Plaatjes?:"+ images);

        lblTitle.setText(title);
        lblDate.setText(date);
        lblMessage.setText(message);

        //lblImages.setImageURI(Uri.parse(images));

        //ImageLoader imageLoader = new ImageLoader(getApplicationContext());
        //imageLoader.DisplayImage(images,lblImages);

        //lblImages.setImageResource(images);
        //imageLoader.displayImage(images);
        //lblImages.setImageBitmap(bitmap);
        //lblImages.setImageResource(R.drawable.bitmap);
        //lblImages.setImageResource(images);
        /*if (d instanceof BitmapDrawable) {
            Bitmap bm = ((BitmapDrawable)d).getBitmap();
            //Maybe more code here?
            lblImages.setImageBitmap(bm);
    }*/
        //lblImages.setImageResource(images);
        //lblImages.DisplayImage(images);
        //lblImages.DisplayImage(images);
    }
}

今、私は自分のインテントを理解していない部分に到達しています = getIntent() は機能しません。エラーが発生します。誰かがコードフォームからアクティビティをフラグメントに変える方法を教えてもらえますか

スクリーンショット: ここに画像の説明を入力

「ニュース クラス」を左に右に「SingleMenuItemActivity」

左側のクラスで onclick をクリックするとうまくいきません。

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2 に答える 2

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ではFragmentActvity、 を作成する代わりに、のIntentオブジェクトを作成する必要がありますBundle

mPullRefreshListView.setOnItemClickListener(new OnItemClickListener(){
    //list.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view,
            int position, long id) {

        HashMap<String, String> map = newsList.get(position - 1);
        Bundle in = new Bundle();
        in.putString("TAG_TITLE",map.get(TAG_TITLE));

        in.putString(TAG_TITLE, map.get(TAG_TITLE));
        in.putString(TAG_CONTENT, map.get(TAG_CONTENT));                         
        in.putString(TAG_DATE, map.get(TAG_DATE));
        //in.putExtra(TAG_INTRODUCTION, map.get(TAG_INTRODUCTION));
        in.putString(TAG_THUMBNAIL, map.get(TAG_THUMBNAIL));
        in.putString(TAG_LINKEDMEDIA, map.get(TAG_LINKEDMEDIA));
        SingleMenuItemActivity singleMenu = new SingleMenuItemActivity(in); 
        FragmentManager fragmentManager=getFragmentManager();
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
        fragmentTransaction.add(android.R.id.content, SingleMenuItemActivity);
        fragmentTransaction.addToBackStack("");//if needed
        fragmentTransaction.commit();



    }
});
}

クラスで、オブジェクトSingleMenuItemActivityのパラメーターを受け入れるコンストラクターを作成しますBundle

public DetailActvity(Bundle bundle)
    {
    this.bundle=bundle;//update global Bundle object
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);

        mView= inflater.inflate(R.layout.YOUR_FRAGMENT_LAYOUT, container,false);

        imgView = (ImageView)mView.findViewById(R.id.imageView1);

        tvDetail = (TextView)mView.findViewById(R.id.tvDetail);
        String detail=bundle.getString("KEY");
        tvDetail.setText(detail);
        String image=bundle.getString("KEY");
        return mView;

    }
于 2013-02-06T15:53:45.103 に答える