Handling customized listview in android?

Question

I am developing an app where I am using customized listview. First i will go with code and i will ask my question(at bottom).

Main.java (using adapter class to set data to listview)

Myadapter adapter = new Myadapter();
    listview.setAdapter(adapter);

}

custom.xml

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

<TextView
    android:id="@+id/textView1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Large Text"
    android:background="#adadad"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/textView2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:textAppearance="?android:attr/textAppearanceLarge" />
    <TextView
        android:id="@+id/textView4"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>

Myadapter class:

     public class Myadapter extends BaseAdapter{

    public int getCount() {
        // TODO Auto-generated method stub
        return startarr.size();
    }

    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        View v = null;
        int i;
        LayoutInflater layoutinflater = getLayoutInflater();
        v = layoutinflater.inflate(R.layout.custom,null);
        TextView aptdate = (TextView)v.findViewById(R.id.textView1);
        TextView apttime = (TextView)v.findViewById(R.id.textView2);
        TextView aptname = (TextView)v.findViewById(R.id.textView3);
        TextView aptid   = (TextView)v.findViewById(R.id.textView4);
        //Button btn = (Button)v.findViewById(R.id.button1);

        final String arlstdate[] = startarr.get(position).split("~");
        for (i = 0; i < arlstdate.length; i++) {
            aptdate.setText(arlstdate[i]);

            try {
                // Getting Array of Contacts
                JSONObject json = new JSONObject(response);
                contacts = json.getJSONArray("schedule");

                // looping through All Contacts
                for(int j = 0; j < contacts.length(); j++){
                    JSONObject c = contacts.getJSONObject(j);

                    // Storing each json item in variable
                    final String id = c.getString("scheduleId");
                    String startTime = c.getString("startDateTime");
                    String endTime = c.getString("endDateTime");
                    String type = c.getString("scheduleType");

                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

                        Date startedTime = sdf.parse(startTime);
                        Date endedTime = sdf.parse(endTime);
                        int getstartdate = startedTime.getDate();
                        int getstartmonth = startedTime.getMonth();
                        int getstartyear = startedTime.getYear();
                        int getday = startedTime.getDay();
                        final int getstartingtime = startedTime.getHours();
                        final int getstartingmin = startedTime.getMinutes();
                                                    long diff = endedTime.getTime() - startedTime.getTime();
                        int hours = (int)(diff/(60*60*1000));
                        testselectID = String.valueOf(hours);

                        hoursarray.add(testselectID);
                        starttimearray.add(String.valueOf(getstartingtime+":"+getstartingmin));


                        calendar = Calendar.getInstance();
                        calendar.setTime(startedTime);

                        System.out.println((calendar.get(Calendar.YEAR))+"-"+(calendar.get(Calendar.MONTH)+1)+"-"+(calendar.get(Calendar.DAY_OF_MONTH)));
                        if(arlstdate[i].equals((calendar.get(Calendar.YEAR))+"-"+(calendar.get(Calendar.MONTH)+1)+"-"+(calendar.get(Calendar.DAY_OF_MONTH))))
                        {
                            aptid.append(id+"\n");
                            apttime.append(testselectID+"Hrs"+"\n");
                            aptname.append((String.valueOf(getstartingtime+":"+getstartingmin))+"\n");

                        }

                }

        }catch (Exception e) {
            // TODO: handle exception
            Toast.makeText(getBaseContext(), "schedule error is " + e, Toast.LENGTH_SHORT).show();
        }
            }

        return v;


 }
    }

Here I am appending the data to textviews and output of the following code is ... \

Upto here everything works good. But what my question is.....

When i click on custom list view the values need to display in seperate toast message. As i have some idea regarding list view click listener, but here if using that code it is taking last appeneded data details. for example if i click on first one (in image) it is displaying 16:40.not displyaing 12:0. what i want is I need to display two of them differently with different toast message.

Can anyone help me with this....

Answer 1

for that you have to implement the OnItemClickListener event on listview .

listview.OnItemClickListener(new OnItemClickListener(){
    @Override
        public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
    // getting values from selected ListItem

       }
   });
 Now you have position of your listview then Whatever the list position that corresponding value is diplays in toast.

Answer 2

You make your live very hard yourself in NOT implementing a proper Model. You should parse your Json outside the Adapter and make Java-classes out of these informations. Then pass a List or an Array as data to your Adapter, while returning Model-objects in getItem(position)! This way you flawlessly can implement an OnItemClickListener and gather whatever data you want.

You also just completely ignore the convertView Parameter. You should take this View instead of inflating a new one if it is NOT null for performance optimization!