AllSuggestionsActivity

AllSuggestionsActivity

本文介绍了显示java.lang.NullPointerException AllSuggestionsActivity.onTextChanged(AllSuggestionsActivity.this.adapter.getFilter()过滤器(CS)。)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我得到一个错误(显示java.lang.NullPointerException ),当我执行code为的ListView 的EditText 在该行过滤

AllSuggestionsActivity.this.adapter.getFilter()过滤器(CS);

好心帮。

 公共类AllSuggestionsActivity扩展ListActivity {    的EditText inputSearch;
    ListView的lstList;    //进度对话框
    私人ProgressDialog pDialog;    ArrayAdapter<串GT;适配器= NULL;    //创建JSON解析器对象
    JSONParser jParser =新JSONParser();    ArrayList的<&HashMap的LT;字符串,字符串>> suggestionsList;    // URL获得所有建议列表
    私人静态字符串url_all_suggestions =htt​​p://10.0.2.2/JKUAT-M-SUGGESTION-BOX/get_all_suggestions.php;    // JSON节点名称
    私有静态最后弦乐TAG_SUCCESS =成功;
    私有静态最后弦乐TAG_SUGGESTIONS =建议;
    私有静态最后弦乐TAG_SID =SID;
    私有静态最后弦乐TAG_SUBJECT =主题;    //建议JSONArray
    JSONArray建议= NULL;    @覆盖
    公共无效的onCreate(捆绑savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.all_suggestions);        inputSearch =(EditText上)findViewById(R.id.inputSearch);
        lstList =(ListView控件)findViewById(android.R.id.list);
        //为哈希映射的ListView
        suggestionsList =新的ArrayList<&HashMap的LT;字符串,字符串>>();        //在后台线程加载建议
        新LoadAllSuggestions()执行();        //获取列表视图
        ListView控件LV = getListView();        / **
         *启用搜索过滤器
         * * /
        inputSearch.addTextChangedListener(新TextWatcher(){            @覆盖
            公共无效onTextChanged(CharSequence的CS,INT ARG1,ARG2 INT,INT ARG3){
                //当用户更改文本
                。AllSuggestionsActivity.this.adapter.getFilter()过滤器(CS);
            }            @覆盖
            公共无效beforeTextChanged(CharSequence的为arg0,ARG1 INT,INT ARG2,
                    INT ARG3){
                // TODO自动生成方法存根            }            @覆盖
            公共无效afterTextChanged(编辑为arg0){
                // TODO自动生成方法存根
            }
        });
        //在选课单建议
        //启动编辑建议画面
        lv.setOnItemClickListener(新OnItemClickListener(){            @覆盖
            公共无效onItemClick(适配器视图<>母公司,观景,
                    INT位置,长的id){
                //从选定的ListItem得到的值
                字符串SID =((的TextView)view.findViewById(R.id.sid))的getText()。
                        的ToString();                //开始新意图
                在意向=新意图(getApplicationContext()
                        EditSuggestionActivity.class);
                //发送到SID下一个活动
                in.putExtra(TAG_SID,SID);                //开始新的活动,期待一些回响应
                startActivityForResult(在100);
            }
        });    }    //从编辑建议活动响应
    @覆盖
    保护无效的onActivityResult(INT申请code,INT结果code,意图数据){
        super.onActivityResult(要求code,结果code,数据);
        //如果结果code 100
        如果(结果code == 100){
            //如果结果code 100接收
            //意味着用户编辑/删除的建议
            //重新载入该画面
            意向意图= getIntent();
            完();
            startActivity(意向);
        }    }    / **
     *背景异步任务以通过HTTP请求负载的所有建议
     * * /
    类LoadAllSuggestions扩展的AsyncTask<字符串,字符串,字符串> {        / **
         *启动后台线程显示进度对话框之前
         * * /
        @覆盖
        在preExecute保护无效(){
            super.on preExecute();
            pDialog =新ProgressDialog(AllSuggestionsActivity.this);
            pDialog.setMessage(加载所有的建议,请稍候......);
            pDialog.setIndeterminate(假);
            pDialog.setCancelable(假);
            pDialog.show();
        }        / **
         *让所有的网址建议
         * * /
        @覆盖
        保护字符串doInBackground(字符串参数... args){
            //大厦参数
            清单<&的NameValuePair GT; PARAMS =新的ArrayList<&的NameValuePair GT;();
            // URL从获取JSON字符串
            JSONObject的JSON = jParser.makeHtt prequest(url_all_suggestions,
                    GET,则params);            //检查JSON效应初探日志的猫
            Log.d(所有建议:json.toString());            尝试{
                //检查成功TAG
                INT成功= json.getInt(TAG_SUCCESS);                如果(成功== 1){
                    发现//建议
                    //获取建议的数组
                    建议= json.getJSONArray(TAG_SUGGESTIONS);                    //通过所有循环的建议
                    的for(int i = 0; I< suggestions.length();我++){
                        JSONObject的C = suggestions.getJSONObject(I)                        //存储在变量中的每个JSON项目
                        字符串ID = c.getString(TAG_SID);
                        字符串主题= c.getString(TAG_SUBJECT);                        //创建新的HashMap
                        HashMap的<字符串,字符串>地图=新的HashMap<字符串,字符串>();                        //将每个子节点的HashMap键=>值
                        map.put(TAG_SID,身份证);
                        map.put(TAG_SUBJECT,学科);                        //添加HashList到ArrayList的
                        suggestionsList.add(地图);
                    }
                }其他{
                    //没有发现任何建议
                    意图I =新意图(getApplicationContext()
                            MainScreenActivity.class);
                    //关闭所有previous活动
                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(ⅰ);
                }
            }赶上(JSONException E){
                e.printStackTrace();
            }            返回null;
        }        / **
         *在完成后台任务之后辞退进度对话框
         * ** /
        @覆盖
        保护无效onPostExecute(字符串FILE_URL){
            //让所有建议后关闭该对话框
            pDialog.dismiss();
            //从后台线程更新界面
            runOnUiThread(新的Runnable(){
                @覆盖
                公共无效的run(){
                    / **
                     *更新解析JSON数据到ListView控件
                     * * /
                    ListAdapter适配器=新SimpleAdapter(
                            AllSuggestionsActivity.this,suggestionsList,
                            R.layout.list_item,新的String [] {TAG_SID,
                                    TAG_SUBJECT},新的INT [] {R.id.sid,
                                    R.id.subject});
                    //更新列表视图
                    setListAdapter(适配器);
                }
            });
        }
    }
}

XML code为ListView:

 <?XML版本=1.0编码=UTF-8&GT?;<滚动型
    的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    机器人:layout_width =FILL_PARENT
    机器人:layout_height =FILL_PARENT
    机器人:fillViewport =真正的>    < LinearLayout中的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
        机器人:layout_width =FILL_PARENT
        机器人:layout_height =FILL_PARENT
        机器人:方向=垂直>    <的EditText
        机器人:ID =@ + ID / inputSearch
        机器人:layout_width =match_parent
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_marginTop =5DP
        机器人:EMS =10
        机器人:MAXLINES =1
        机器人:提示=搜索>
        < requestFocus的/>
    &所述; /的EditText&GT - →;        <! - 主要的ListView
             总是给值id作为列表(@android:ID /列表)
         - >
        < ListView控件
            机器人:ID =@机器人:ID /列表
            机器人:layout_width =FILL_PARENT
            机器人:layout_height =WRAP_CONTENT/>    < / LinearLayout中>
    在此输入code< /滚动型>


解决方案

请找到解决错误:

 公共类AllSuggestionsActivity扩展ListActivity {SimpleAdapter适配器;的EditText inputSearch;//进度对话框
私人ProgressDialog pDialog;//创建JSON解析器对象
JSONParser jParser =新JSONParser();ArrayList的<&HashMap的LT;字符串,字符串>> suggestionsList;// URL获得所有建议列表
私人静态字符串url_all_suggestions =htt​​p://10.0.2.2/JKUAT-M-SUGGESTION-BOX/get_all_suggestions.php;// JSON节点名称
私有静态最后弦乐TAG_SUCCESS =成功;
私有静态最后弦乐TAG_SUGGESTIONS =建议;
私有静态最后弦乐TAG_SID =SID;
私有静态最后弦乐TAG_SUBJECT =主题;//建议JSONArray
JSONArray建议= NULL;@覆盖
公共无效的onCreate(捆绑savedInstanceState){
    super.onCreate(savedInstanceState);
    的setContentView(R.layout.all_suggestions);    //为哈希映射的ListView
    suggestionsList =新的ArrayList<&HashMap的LT;字符串,字符串>>();    //在后台线程加载建议
    新LoadAllSuggestions()执行();    //获取列表视图
    ListView控件LV = getListView();    //在选课单建议
    //启动编辑建议画面
    lv.setOnItemClickListener(新OnItemClickListener(){        @覆盖
        公共无效onItemClick(适配器视图<>母公司,观景,
                INT位置,长的id){
            //从选定的ListItem得到的值
            字符串SID =((的TextView)view.findViewById(R.id.sid))的getText()。
                    的ToString();            //开始新意图
            在意向=新意图(getApplicationContext()
                    EditSuggestionActivity.class);
            //发送到SID下一个活动
            in.putExtra(TAG_SID,SID);            //开始新的活动,期待一些回响应
            startActivityForResult(在100);
        }
    });}//从编辑建议活动响应
@覆盖
保护无效的onActivityResult(INT申请code,INT结果code,意图数据){
    super.onActivityResult(要求code,结果code,数据);
    //如果结果code 100
    如果(结果code == 100){
        //如果结果code 100接收
        //意味着用户编辑/删除的建议
        //重新载入该画面
        意向意图= getIntent();
        完();
        startActivity(意向);
    }}/ **
 *背景异步任务以通过HTTP请求负载的所有建议
 * * /
类LoadAllSuggestions扩展的AsyncTask<字符串,字符串,字符串> {    / **
     *启动后台线程显示进度对话框之前
     * * /
    @覆盖
    在preExecute保护无效(){
        super.on preExecute();
        pDialog =新ProgressDialog(AllSuggestionsActivity.this);
        pDialog.setMessage(加载所有的建议,请稍候......);
        pDialog.setIndeterminate(假);
        pDialog.setCancelable(假);
        pDialog.show();
    }    / **
     *让所有的网址建议
     * * /
    @覆盖
    保护字符串doInBackground(字符串参数... args){
        //大厦参数
        清单<&的NameValuePair GT; PARAMS =新的ArrayList<&的NameValuePair GT;();
        // URL从获取JSON字符串
        JSONObject的JSON = jParser.makeHtt prequest(url_all_suggestions,
                GET,则params);        //检查JSON效应初探日志的猫
        Log.d(所有建议:json.toString());        尝试{
            //检查成功TAG
            INT成功= json.getInt(TAG_SUCCESS);            如果(成功== 1){
                发现//建议
                //获取建议的数组
                建议= json.getJSONArray(TAG_SUGGESTIONS);                //通过所有循环的建议
                的for(int i = 0; I< suggestions.length();我++){
                    JSONObject的C = suggestions.getJSONObject(I)                    //存储在变量中的每个JSON项目
                    字符串ID = c.getString(TAG_SID);
                    字符串主题= c.getString(TAG_SUBJECT);                    //创建新的HashMap
                    HashMap的<字符串,字符串>地图=新的HashMap<字符串,字符串>();                    //将每个子节点的HashMap键=>值
                    map.put(TAG_SID,身份证);
                    map.put(TAG_SUBJECT,学科);                    //添加HashList到ArrayList的
                    suggestionsList.add(地图);
                }
            }其他{
                //没有发现任何建议
                意图I =新意图(getApplicationContext()
                        MainScreenActivity.class);
                //关闭所有previous活动
                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(ⅰ);
            }
        }赶上(JSONException E){
            e.printStackTrace();
        }        返回null;
    }    / **
     *在完成后台任务之后辞退进度对话框
     * ** /
    @覆盖
    保护无效onPostExecute(字符串FILE_URL){
        //让所有建议后关闭该对话框
        pDialog.dismiss();
        //从后台线程更新界面
        runOnUiThread(新的Runnable(){
            @覆盖
            公共无效的run(){
                / **
                 *更新解析JSON数据到ListView控件
                 * * /                适配器=新SimpleAdapter(
                        AllSuggestionsActivity.this,suggestionsList,
                        R.layout.list_item,新的String [] {TAG_SID,
                                TAG_SUBJECT},新的INT [] {R.id.sid,
                                R.id.subject});
                //更新列表视图
                setListAdapter(适配器);                / **
                 *启用搜索过滤器
                 * * /
                inputSearch =(EditText上)findViewById(R.id.inputSearch);                inputSearch.addTextChangedListener(新TextWatcher(){                    @覆盖
                    公共无效onTextChanged(CharSequence的CS,INT ARG1,ARG2 INT,INT ARG3){
                        //当用户更改文本
                        。AllSuggestionsActivity.this.adapter.getFilter()过滤器(CS);
                    }                    @覆盖
                    公共无效beforeTextChanged(CharSequence的为arg0,ARG1 INT,INT ARG2,
                            INT ARG3){
                        // TODO自动生成方法存根                    }                    @覆盖
                    公共无效afterTextChanged(编辑为arg0){
                        // TODO自动生成方法存根
                    }
                });
            }
        });
    }
}

}

xml文件保持完好

I am getting an error (java.lang.NullPointerException) when I execute the code for the ListView with EditText for filtering at the line

AllSuggestionsActivity.this.adapter.getFilter().filter(cs);

kindly help.

public class AllSuggestionsActivity extends ListActivity {

    EditText inputSearch;
    ListView lstList;

    // Progress Dialog
    private ProgressDialog pDialog;

    ArrayAdapter<String> adapter = null;

    // Creating JSON Parser object
    JSONParser jParser = new JSONParser();

    ArrayList<HashMap<String, String>> suggestionsList;

    // url to get all suggestions list
    private static String url_all_suggestions = "http://10.0.2.2/JKUAT-M-SUGGESTION-BOX/get_all_suggestions.php";

    // JSON Node names
    private static final String TAG_SUCCESS = "success";
    private static final String TAG_SUGGESTIONS = "suggestions";
    private static final String TAG_SID = "sid";
    private static final String TAG_SUBJECT = "subject";

    // suggestions JSONArray
    JSONArray suggestions = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.all_suggestions);

        inputSearch = (EditText) findViewById(R.id.inputSearch);
        lstList = (ListView) findViewById(android.R.id.list);


        // Hashmap for ListView
        suggestionsList = new ArrayList<HashMap<String, String>>();

        // Loading suggestions in Background Thread
        new LoadAllSuggestions().execute();

        // Get listview
        ListView lv = getListView();

        /**
         * Enabling Search Filter
         * */
        inputSearch.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
                // When user changed the Text
                AllSuggestionsActivity.this.adapter.getFilter().filter(cs);   
            }

            @Override
            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                    int arg3) {
                // TODO Auto-generated method stub

            }

            @Override
            public void afterTextChanged(Editable arg0) {
                // TODO Auto-generated method stub                          
            }
        });


        // on seleting single suggestion
        // launching Edit Suggestion Screen
        lv.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // getting values from selected ListItem
                String sid = ((TextView) view.findViewById(R.id.sid)).getText()
                        .toString();

                // Starting new intent
                Intent in = new Intent(getApplicationContext(),
                        EditSuggestionActivity.class);
                // sending sid to next activity
                in.putExtra(TAG_SID, sid);

                // starting new activity and expecting some response back
                startActivityForResult(in, 100);
            }
        });

    }

    // Response from Edit Suggestion Activity
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        // if result code 100
        if (resultCode == 100) {
            // if result code 100 is received
            // means user edited/deleted suggestion
            // reload this screen again
            Intent intent = getIntent();
            finish();
            startActivity(intent);
        }

    }

    /**
     * Background Async Task to Load all suggestion by making HTTP Request
     * */
    class LoadAllSuggestions extends AsyncTask<String, String, String> {

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

        /**
         * getting All suggestions from url
         * */
        @Override
        protected String doInBackground(String... args) {
            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            // getting JSON string from URL
            JSONObject json = jParser.makeHttpRequest(url_all_suggestions,
                    "GET", params);

            // Check your log cat for JSON reponse
            Log.d("All Suggestions: ", json.toString());

            try {
                // Checking for SUCCESS TAG
                int success = json.getInt(TAG_SUCCESS);

                if (success == 1) {
                    // suggestions found
                    // Getting Array of Suggestions
                    suggestions = json.getJSONArray(TAG_SUGGESTIONS);

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

                        // Storing each json item in variable
                        String id = c.getString(TAG_SID);
                        String subject = c.getString(TAG_SUBJECT);

                        // creating new HashMap
                        HashMap<String, String> map = new HashMap<String, String>();

                        // adding each child node to HashMap key => value
                        map.put(TAG_SID, id);
                        map.put(TAG_SUBJECT, subject);

                        // adding HashList to ArrayList
                        suggestionsList.add(map);
                    }
                } else {
                    // no suggestions found
                    Intent i = new Intent(getApplicationContext(),
                            MainScreenActivity.class);
                    // Closing all previous activities
                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(i);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

            return null;
        }

        /**
         * After completing background task Dismiss the progress dialog
         * **/
        @Override
        protected void onPostExecute(String file_url) {
            // dismiss the dialog after getting all suggestions
            pDialog.dismiss();
            // updating UI from Background Thread
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    /**
                     * Updating parsed JSON data into ListView
                     * */
                    ListAdapter adapter = new SimpleAdapter(
                            AllSuggestionsActivity.this, suggestionsList,
                            R.layout.list_item, new String[] { TAG_SID,
                                    TAG_SUBJECT }, new int[] { R.id.sid,
                                    R.id.subject });
                    // updating listview
                    setListAdapter(adapter);
                }
            });
        }
    }
}

xml code for the listview:

<?xml version="1.0" encoding="utf-8"?>

<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:fillViewport="true">    

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

    <EditText
        android:id="@+id/inputSearch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:ems="10"
        android:maxLines="1"
        android:hint="Search" >
        <requestFocus />
    </EditText>-->

        <!-- Main ListView 
             Always give id value as list(@android:id/list)
        -->
        <ListView
            android:id="@android:id/list"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"/>

    </LinearLayout>


    enter code here

</ScrollView>
解决方案

Kindly find solution to the error:

public class AllSuggestionsActivity extends ListActivity {

SimpleAdapter adapter;

EditText inputSearch;

// Progress Dialog
private ProgressDialog pDialog;

// Creating JSON Parser object
JSONParser jParser = new JSONParser();

ArrayList<HashMap<String, String>> suggestionsList;

// url to get all suggestions list
private static String url_all_suggestions = "http://10.0.2.2/JKUAT-M-SUGGESTION-BOX/get_all_suggestions.php";

// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_SUGGESTIONS = "suggestions";
private static final String TAG_SID = "sid";
private static final String TAG_SUBJECT = "subject";

// suggestions JSONArray
JSONArray suggestions = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.all_suggestions);

    // Hashmap for ListView
    suggestionsList = new ArrayList<HashMap<String, String>>();

    // Loading suggestions in Background Thread
    new LoadAllSuggestions().execute();

    // Get listview
    ListView lv = getListView();

    // on seleting single suggestion
    // launching Edit Suggestion Screen
    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // getting values from selected ListItem
            String sid = ((TextView) view.findViewById(R.id.sid)).getText()
                    .toString();

            // Starting new intent
            Intent in = new Intent(getApplicationContext(),
                    EditSuggestionActivity.class);
            // sending sid to next activity
            in.putExtra(TAG_SID, sid);

            // starting new activity and expecting some response back
            startActivityForResult(in, 100);
        }
    });

}

// Response from Edit Suggestion Activity
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    // if result code 100
    if (resultCode == 100) {
        // if result code 100 is received
        // means user edited/deleted suggestion
        // reload this screen again
        Intent intent = getIntent();
        finish();
        startActivity(intent);
    }

}

/**
 * Background Async Task to Load all suggestion by making HTTP Request
 * */
class LoadAllSuggestions extends AsyncTask<String, String, String> {

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

    /**
     * getting All suggestions from url
     * */
    @Override
    protected String doInBackground(String... args) {
        // Building Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        // getting JSON string from URL
        JSONObject json = jParser.makeHttpRequest(url_all_suggestions,
                "GET", params);

        // Check your log cat for JSON reponse
        Log.d("All Suggestions: ", json.toString());

        try {
            // Checking for SUCCESS TAG
            int success = json.getInt(TAG_SUCCESS);

            if (success == 1) {
                // suggestions found
                // Getting Array of Suggestions
                suggestions = json.getJSONArray(TAG_SUGGESTIONS);

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

                    // Storing each json item in variable
                    String id = c.getString(TAG_SID);
                    String subject = c.getString(TAG_SUBJECT);

                    // creating new HashMap
                    HashMap<String, String> map = new HashMap<String, String>();

                    // adding each child node to HashMap key => value
                    map.put(TAG_SID, id);
                    map.put(TAG_SUBJECT, subject);

                    // adding HashList to ArrayList
                    suggestionsList.add(map);
                }
            } else {
                // no suggestions found
                Intent i = new Intent(getApplicationContext(),
                        MainScreenActivity.class);
                // Closing all previous activities
                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(i);
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return null;
    }

    /**
     * After completing background task Dismiss the progress dialog
     * **/
    @Override
    protected void onPostExecute(String file_url) {
        // dismiss the dialog after getting all suggestions
        pDialog.dismiss();
        // updating UI from Background Thread
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                /**
                 * Updating parsed JSON data into ListView
                 * */

                adapter = new SimpleAdapter(
                        AllSuggestionsActivity.this, suggestionsList,
                        R.layout.list_item, new String[] { TAG_SID,
                                TAG_SUBJECT }, new int[] { R.id.sid,
                                R.id.subject });
                // updating listview
                setListAdapter(adapter);

                /**
                 * Enabling Search Filter
                 * */
                inputSearch = (EditText) findViewById(R.id.inputSearch);

                inputSearch.addTextChangedListener(new TextWatcher() {

                    @Override
                    public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
                        // When user changed the Text
                        AllSuggestionsActivity.this.adapter.getFilter().filter(cs);   
                    }

                    @Override
                    public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                            int arg3) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void afterTextChanged(Editable arg0) {
                        // TODO Auto-generated method stub                          
                    }
                });
            }
        });
    }
}

}

xml file remains intact

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10-29 21:47