Question

我在Fragment班级中获得了两个值。一个值来自我在登录时保存的SharedPreferences，另一个值来自JsonArray。两者都有userId。现在我想比较这些值并根据它设置结果值。之后，我想将该结果值传递给适配器类并获取该值。

我正在使用此代码传递该值：

inbox = json.getJSONArray(TAG_FEED);
                //inboxImage = json.getJSONArray(TAG_TWEET_IMAGE);

                String savedId = mAppPreference.getUserID();

                // looping through All messages
                for (int i = 0; i < inbox.length(); i++) {
                    JSONObject c = inbox.getJSONObject(i);

                    /*inboxImage = json.getJSONArray(TAG_TWEET_IMAGE);
                    Log.d("babababa", inboxImage.toString());*/

                    Ozone_Beans ozonebean = new Ozone_Beans(c.getString(TAG_CONTENT), c.getString(TAG_NAME),
                            c.getString(TAG_DATE),c.getString(TAG_USER_IMAGE),c.getString(TAG_TWEET),c.getString(TAG_USER));

                    String userKiId = c.getString(TAG_USER);

                    String finalValue ;

                    if((savedId.equals(userKiId))){

                         finalValue = "a";
                    } else {

                         finalValue = "b";
                    }



                    context2 = getActivity().getApplicationContext();
                    OzoneAdapter ozonadptr = new OzoneAdapter(context2);
                    ozonadptr.finalval=finalValue.toString();

                    feedList.add(ozonebean);

我正在尝试在适配器类中检索此值，如下所示：

public OzoneAdapter(Context context2) {
        // TODO Auto-generated constructor stub
        context2.finalval.getText().toString().trim();
    }

但它允许我写这一行：context2.finalval.getText().toString().trim();

请告诉我如何实现这一目标。

我的AsyncTask类是这样的：

class LoadOzone extends AsyncTask<String, String, String> {


        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(context);
            pDialog.setMessage("Loading Inbox ...");
            pDialog.setCancelable(false);
            pDialog.show();
        }

        /**
         * getting Inbox JSON
         * */
        protected String doInBackground(String... args) {
            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();

            String url = INBOX_URL +mAppPreference.getUserID()+"/"+ "key"+"/"+mAppPreference.getServerKey();

            Log.d("urlll", url);
            // getting JSON string from URL
            JSONObject json = jsonParser.makeHttpRequest(url, "GET",params);
            Log.d("general JSON ", json.toString());
            try {
                inbox = json.getJSONArray(TAG_FEED);
                //inboxImage = json.getJSONArray(TAG_TWEET_IMAGE);

                String savedId = mAppPreference.getUserID();

                // looping through All messages
                for (int i = 0; i < inbox.length(); i++) {
                    JSONObject c = inbox.getJSONObject(i);

                    /*inboxImage = json.getJSONArray(TAG_TWEET_IMAGE);
                    Log.d("babababa", inboxImage.toString());*/

                    Ozone_Beans ozonebean = new Ozone_Beans(c.getString(TAG_CONTENT), c.getString(TAG_NAME),
                            c.getString(TAG_DATE),c.getString(TAG_USER_IMAGE),c.getString(TAG_TWEET),c.getString(TAG_USER));

                    String userKiId = c.getString(TAG_USER);

                    String finalValue ;

                    if((savedId.equals(userKiId))){

                         finalValue = "a";
                    } else {

                         finalValue = "b";
                    }


                    OzoneAdapter ozonadptr = new OzoneAdapter(finalValue.toString());
                    //ozonadptr.finalval=finalValue.toString();

                    feedList.add(ozonebean);
                    }

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

        /**
         * After completing background task Dismiss the progress dialog
         * **/
        protected void onPostExecute(String file_url) {
            // dismiss the dialog after getting all products
            pDialog.dismiss();
            adapter = new OzoneAdapter(feedList,context);
            oZone_listView.setAdapter(adapter);
        }
    }

    private void initialiseNoramlVariable() {
        context  = getActivity();
        mAppPreference = AppPreference.getInstance(context);
    }

当我尝试发送＆＃39; finalValue＆＃39;

时，这是我的适配器类生成两个构造函数

public OzoneAdapter(ArrayList<Ozone_Beans> feedList, Context context) {
        // TODO Auto-generated constructor stub
        super();
        this.feedList = feedList;
        this.context = context;
        this.activity = activity;
        inflater = (LayoutInflater )context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        imageloader = ImageLoader.getInstance();
        imageloader.init(ImageLoaderConfiguration.createDefault(context));
        imageloader1 = ImageLoader.getInstance();
        imageloader1.init(ImageLoaderConfiguration.createDefault(context));

    }


    public OzoneAdapter(String finalValue) {
        // TODO Auto-generated constructor stub

        String GettingValue = activity.finalValue.getText().toString().trim();
    }

Answer 1

尝试如下...

OzoneAdapter ozonadptr = new OzoneAdapter( getActivity() );

public OzoneAdapter(Activity activity) {
        // TODO Auto-generated constructor stub
        activity.finalval.getText().toString().trim();
    }

修改

您可以将其作为构造函数参数传递给OzoneAdapter类，如下所示。

OzoneAdapter ozonadptr = new OzoneAdapter(finalValue.toString()); public OzoneAdapter(String value) { // Get finalval here. }

修改
使用以下代码修改
AsyncTask类：

class LoadOzone extends AsyncTask<String, String, String> { String finalValue = ""; @Override protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(context); pDialog.setMessage("Loading Inbox ..."); pDialog.setCancelable(false); pDialog.show(); } /** * getting Inbox JSON * */ protected String doInBackground(String... args) { // Building Parameters List<NameValuePair> params = new ArrayList<NameValuePair>(); String url = INBOX_URL +mAppPreference.getUserID()+"/"+ "key"+"/"+mAppPreference.getServerKey(); Log.d("urlll", url); // getting JSON string from URL JSONObject json = jsonParser.makeHttpRequest(url, "GET",params); Log.d("general JSON ", json.toString()); try { inbox = json.getJSONArray(TAG_FEED); //inboxImage = json.getJSONArray(TAG_TWEET_IMAGE); String savedId = mAppPreference.getUserID(); // looping through All messages for (int i = 0; i < inbox.length(); i++) { JSONObject c = inbox.getJSONObject(i); /*inboxImage = json.getJSONArray(TAG_TWEET_IMAGE); Log.d("babababa", inboxImage.toString());*/ Ozone_Beans ozonebean = new Ozone_Beans(c.getString(TAG_CONTENT), c.getString(TAG_NAME), c.getString(TAG_DATE),c.getString(TAG_USER_IMAGE),c.getString(TAG_TWEET),c.getString(TAG_USER)); String userKiId = c.getString(TAG_USER); if((savedId.equals(userKiId))){ finalValue = "a"; } else { finalValue = "b"; } feedList.add(ozonebean); } } catch (JSONException e) { e.printStackTrace(); } return null; } /** * After completing background task Dismiss the progress dialog * **/ protected void onPostExecute(String file_url) { // dismiss the dialog after getting all products pDialog.dismiss(); adapter = new OzoneAdapter(feedList,context,finalValue); oZone_listView.setAdapter(adapter); } } private void initialiseNoramlVariable() { context = getActivity(); mAppPreference = AppPreference.getInstance(context); }
使用以下代码修改
OzoneAdapter类...

public OzoneAdapter(ArrayList<Ozone_Beans> feedList, Context context, String finalval ) { // TODO Auto-generated constructor stub super(); this.feedList = feedList; this.context = context; this.activity = activity; inflater = (LayoutInflater )context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); imageloader = ImageLoader.getInstance(); imageloader.init(ImageLoaderConfiguration.createDefault(context)); imageloader1 = ImageLoader.getInstance(); imageloader1.init(ImageLoaderConfiguration.createDefault(context)); // get final value here from constructor parameter String GettingValue = finalval; }

从MainActivity向Custom Adapter发送值时出现问题

1 个答案: