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POGet text from edittext inside a listview
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  1. POGet text from edittext inside a listview
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    copied!<p><strong>Question part: 1</strong></p> <p>I have created an activity which contains product id and product name as list items. Each row contains an edittext which can be used to enter quantity for a particular product. The rows also contain a checkbox to select the particular product.</p> <p>This is how the list looks like:</p> <p><img src="https://i.stack.imgur.com/4h9zF.png" alt="List"> </p> <p>When I click on the list items, I can get the id and name of the particular list item, but I also want to get the quantity entered by the user for the list item.</p> <p>This is the <strong>activity responsible for generating the listview</strong>:</p> <pre><code>public class PollStationActivity extends Activity { // Hashmap for ListView ArrayList&lt;HashMap&lt;String, String&gt;&gt; PSList = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); String status_code_from_prev; List&lt;HashMap&lt;String, String&gt;&gt; fillMaps=null; String alert_message; String quantity_message; //quantity edittext EditText quantity_edit; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_poll_station); //quantity edittext quantity_edit = (EditText)findViewById(R.id.qty_editText); //database insertion DatabaseHelper db = new DatabaseHelper(this); ContentValues values = new ContentValues(); try { db.createDataBase(); values.put("_id", "1"); values.put("name", "rose"); db.insert(values); } catch (IOException e) { e.printStackTrace(); } db.close(); ArrayList&lt;TestItem&gt; PSList = new ArrayList&lt;TestItem&gt;(); try { db.createDataBase(); PSList = db.getAllData(); } catch (IOException e) { e.printStackTrace(); } db.close(); fillMaps = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); Iterator&lt;TestItem&gt; i = PSList.iterator(); while(i.hasNext()) { HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); TestItem objPSItem = i.next(); map.put("name", objPSItem.NAME); map.put("Id", objPSItem.ID); //map.put("quantity", objPSItem.QUANTITY); fillMaps.add(map); } Log.i("Size: ", ""+fillMaps.size()); //populating listview from database ListView listView1 = (ListView) findViewById(R.id.poll_list_listView); if (null != listView1 &amp;&amp; null != PSList) { listView1.setAdapter(new ListAdapter(PollStationActivity.this, R.id.ListViewContainer, new String[fillMaps.size()])); } } //class for the list and on click handler class ListAdapter extends ArrayAdapter&lt;String&gt; { private final Context context; private final String[] values; public ListAdapter(Context context, int textViewResourceId, String[] objects) { super(context, textViewResourceId, objects); // TODO Auto-generated constructor stub this.context = context; this.values = objects; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub // return super.getView(position, convertView, parent); LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); final View rowView = inflater.inflate(R.layout.list_layout, parent, false); final HashMap&lt;String, String&gt; map = fillMaps.get(position); TextView textView = (TextView) rowView .findViewById(R.id.list_label_name); textView.setText("("+map.get("Id")+") "+map.get("name")); rowView.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { rowView.setBackgroundResource(R.drawable.list_bg_pressed); Handler handler = new Handler(); Runnable r = new Runnable() { public void run() { rowView.setBackgroundResource(R.drawable.list_bg); } }; handler.postDelayed(r, 200); //alert box AlertDialog.Builder alertDialog = new AlertDialog.Builder(PollStationActivity.this); // Setting Dialog Title alertDialog.setTitle("Please Note!"); // Setting Dialog Message alertDialog.setMessage("Are you sure you want to select "+"("+map.get("Id")+") "+map.get("name")+"?"); // Setting Positive "Yes" Button alertDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog,int which) { // Write your code here to invoke YES event // Intent intent = new Intent(RegisterFirstActivity.this, RegisterSecondActivity.class); // // intent.putExtra("AC_Code", map.get(TAG_CODE)); // RegisterFirstActivity.this.startActivity(intent); } }); // Setting Negative "NO" Button alertDialog.setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // Write your code here to invoke NO event dialog.cancel(); } }); // Showing Alert Message alertDialog.show(); } }); return rowView; } } public void makeAToast(String str) { //yet to implement Toast toast = Toast.makeText(this,str, Toast.LENGTH_SHORT); toast.setGravity(Gravity.CENTER, 0, 0); toast.show(); } } </code></pre> <p>This is the <strong>TestItem</strong> class:</p> <pre><code> public class TestItem { public String ID; public String NAME; public String QUANTITY; public boolean selected; // Empty constructor public TestItem(){ } // constructor public TestItem(String id, String name, String quantity){ this.ID = id; this.NAME = name; this.QUANTITY = quantity; } // constructor public TestItem(String name, String quantity){ this.NAME = name; this.QUANTITY = quantity; } // getting ID public String getID(){ return this.ID; } // setting id public void setID(String id){ this.ID = id; } // getting name public String getName(){ return this.NAME; } // setting name public void setName(String name){ this.NAME = name; } // getting phone number public String getQuantity(){ return this.QUANTITY; } // setting quantity public void setQuantity(String quantity){ this.QUANTITY = quantity; } public boolean isSelected() { return selected; } public void setSelected(boolean selected) { this.selected = selected; } } </code></pre> <p>This is the <strong>activity_poll_station.xml</strong>:</p> <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/main_bg"&gt; &lt;RelativeLayout android:id="@+id/ListViewContainer" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/poll_label_textView" android:layout_centerHorizontal="true" android:layout_marginTop="28dp" &gt; &lt;ListView android:id="@+id/poll_list_listView" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" &gt; &lt;/ListView&gt; &lt;/RelativeLayout&gt; &lt;/RelativeLayout&gt; </code></pre> <p>This is the <strong>list_layout.xml</strong>:</p> <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/library_linear_layout" android:layout_width="match_parent" android:layout_height="70dp" android:layout_alignParentLeft="true" android:background="@drawable/list_bg" android:padding="5dp" &gt; &lt;RelativeLayout android:layout_width="fill_parent" android:layout_height="44dp" android:background="@null" &gt; &lt;TextView android:id="@+id/list_label_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_centerVertical="true" android:text="name" android:textAppearance="?android:attr/textAppearanceSmall" android:textSize="17sp" /&gt; &lt;CheckBox android:id="@+id/item_checkBox" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true"/&gt; &lt;EditText android:id="@+id/qty_editText" android:layout_width="75dp" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:ems="10" android:maxLines="1" android:inputType="number" &gt; &lt;/EditText&gt; &lt;/RelativeLayout&gt; &lt;/LinearLayout&gt; </code></pre> <p>I want to how to extract text from the edittext which I have created for every list item. If I try to extract the text on </p> <pre><code>rowView.setOnClickListener(new View.OnClickListener() </code></pre> <p>like this:</p> <pre><code>// Setting Dialog Message alertDialog.setMessage("Are you sure you want to select "+"("+map.get("Id")+") "+map.get("name")+"Quantity: "+quantity_edit.getText().toString()+"?"); </code></pre> <p>The I am getting a <code>null pointer exception</code> getting generated due to the <code>rowView.setOnClickListener(new View.OnClickListener()</code></p> <p>What should I do? What should be the work around?</p> <p>Thanks in advance!</p> <p>//------------------------------------------------------------------------------//</p> <p><strong>Question part: 2</strong></p> <p>Now I want to do something like, I want to remove a particular row on clicking it. The row will only be deleted from the existing listview and a new list will be shown, how to do that?</p> <p>Thanks once again!</p>
 

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