I want to display contacts in list view and add actions on all contacts , like on click on a particular contact it should display the phone number , mail id and delete of the particular contact...
import android.app.ListActivity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class CPDemo1 extends ListActivity {
@SuppressWarnings("unchecked")
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String str[]= {"datta","vivek","Nagesh sir","shiv"};
String name;
ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
int nameIdx = cursor.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME);
if (cursor.moveToFirst())
do {
int x = 0;
name = cursor.getString(nameIdx);
str[x]= name;
x++;
ArrayAd开发者_JAVA百科apter arr = new ArrayAdapter(this, android.R.layout.simple_list_item_1,str);
setListAdapter(arr);
} while(cursor.moveToNext());
}
The problem in your current code is create new adapter for every loop. Just move ArrayAdapter arr = new ArrayAdapter(this, android.R.layout.simple_list_item_1,str);
out of do while loop
. And another issue, You work too much on UIThread
(loop through cursor )so user will see a black screen or ANR if your numbers of contact is huge. Learn to use AsyncQueryHandler
and CursorAdapter
, it's all in my link and nikki's link
And why don't you have a look at default Contacts app in Android source code: Below is my custom Contacts App.
https://github.com/android/platform_packages_apps_contacts
Just have a look at below link and try using this code for displaying contacts saved in android phone book into your application.
http://developer.android.com/resources/samples/ContactManager/index.html
Here is a little change to the code posted by you, it will solve your problem.
if (cursor.moveToFirst())
{
int x = 0;
do {
name = cursor.getString(nameIdx);
Log.d("CONTENT",name);
str[x]= name;
x++;
} while(cursor.moveToNext());
ArrayAdapter<String> arr = new ArrayAdapter<String>(
this, android.R.layout.simple_list_item_1,str);
setListAdapter(arr);
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