I am working on an application in which i need to fetch all the contacts from the contact book and display. i want the user to select some contacts and add them in a group which is saved in db.
i have created a custom list view- contactitem.xml-
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<TextView
android:id="@+id/contactname"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:layout_marginLeft="20dp"
android:ellipsize="end"
android:singleLine="true"
android:clickable="true"/>
<TextView
android:id="@+id/contactnum"
android:layout_width="wrap_content"
android:textColor="@color/White"
android:clickable="true"
android:layout_gravity="center_vertical"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/add"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:text="@string/add_contacts"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:focusable="false"
android:focusableInTouchMode="false"/>
</LinearLayout>
i have a SelectContact class for fetching contacts from Contact book-
public class SelectContacts extends Activity implements OnClickListener{
private String groupName;
private Button back;
private Button home;
private List<Contact> list = new ArrayList<Contact>();
private ListView contactList;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.selectcontacts);
Bundle bundle = getIntent().getExtras();
groupName=bundle.getString("groupName");
back=(Button)findViewById(R.id.back_button);
back.setOnClickListener(this);
home=(Button)findViewById(R.id.home_button);
home.setOnClickListener(this);
contactList=(ListView)findViewById(R.id.contactsListView);
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
cur.moveToFirst();
if (cur.getCount() > 0) {
do{
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
String[] fields={ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,ContactsContract.CommonDataKinds.Phone.NUMBER};
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, fields, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?", new String[]{id}, null);
pCur.moveToFirst();
do {
String number=pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Contact c=new Contact(name,number);
list.add(c);
}while (pCur.moveToNext());
pCur.close();
}
}while (cur.moveToNext());
ContactAdapter contactAdapter=new ContactAdapter(this, R.layout.contactitem, list, contactList,groupName);
contactList.setAdapter(contactAdapter);
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent= new Intent();
if(v==back){
Bundle bundle = new Bundle();
bundle.putString("groupName", groupName);
intent.putExtras(bundle);
intent.setClass(SelectContacts.this, GroupDetails.class);
startActivity(intent);
}
if(v==home){
intent.setClass(SelectContacts.this, Welcome.class);
startActivity(intent);
}
}
}
and implemented a custom adapter- ContactAdapter-`
public class ContactAdapter extends ArrayAdapter<HashMap<String, Contact>>{
private ArrayList<HashMap<String, Contact>> items;
private LayoutInflater mInflater ;
public ContactAdapter(Context context, int textViewResourceId, ArrayList<HashMap<String, Contact>> items) {
super(context, textViewResourceId, items);
this.items = items;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
mInflater = LayoutInflater.from(getContext());
ViewHolder holder;
if(convertView==null){
convertView = mInflater.inflate(R.layout.contactitem, parent, false);
holder = new ViewHolder();
holder.name = (TextView) convertView.findViewById(R.id.contactname);
holder.number = (TextView) convertView.findViewById(R.id.contactnum);
holder.add=(Button)convertView.findViewById(R.id.add);
convertView.setTag(holder);
}
else{
holder=(ViewHolder)convertView.getTag();
}
String name=items.get(position).get(""+position).getContactName();
String number=items.get(position).get(""+position).getContactNum();
holder.name.setText(name);
holder.number.setText(number);
return convertView;
}
static class ViewHolder{
TextView name;
TextView number;
Button add;
}
}
here Contact is a simple POJO-
public class Contact {
private String contactName;
private String contactNum;
public String getContactName() {
return contactName;
}
public void setContactName(String contactName) {
this.contactName = contactName;
}
public String getContactNum() {
return contactNum;
}
public void setContactNum(String contactNum) {
this.contactNum = contactName;
}
}
i am a newbie in android..
The above code works quiet fine on emulater and fetch contact name and numbers to display in list. but when i test this code on phone which have a Gmail account syncronized, it got crashed with following error..
CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0
I don’t have any idea why this is happening. Please give some suggestions…
It seems you forgot to call
cur.moveToFirst();after fetching the Contact Cursor. After this line,You are also missing the same thing here, after this –
pCur.moveToFirst();