Develop Reference

Switching from TextView to ListView in Android

So, I've been following this Vogella ContentProvider tutorial sent to me by a friend, and if you look at the end of section 6.3 you'll see that he says:
If you run this application the data is read from the ContentProvider of the People application and displayed in a TextView. Typically you would display such data in a ListView.
Since I'm new to working with android (and programming in general), I just changed the TextView tag in the main.xml to ListView, and as expected, when I run the app in the emulator, it crashes.
On-demand code:
XML File:
<?xml version="1.0" encoding="utf-8"?>
<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/contactview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Java File:
package de.vogella.android.contentprovider;
import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.widget.TextView;
public class ContactsActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contacts);
TextView contactView = (TextView) findViewById(R.id.contactview);
Cursor cursor = getContacts();
while (cursor.moveToNext()) {
String displayName = cursor.getString(cursor
.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
contactView.append("Name: ");
contactView.append(displayName);
contactView.append("\n");
}
}
private Cursor getContacts() {
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME };
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '"
+ ("1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";
return managedQuery(uri, projection, selection, selectionArgs,
sortOrder);
}
}
I'm sure I'm doing something wrong, can someone point me in the right direction or tell me how to switch it from TextView to ListView?
Also, this is unrelated, but I downloaded the adt bundle and sometimes it doesn't generate the R.java file correctly, it doesn't make any changes to the R.java file and leaves it as the default one that gets generated when you make any new android project, any ideas why?
Note: You don't have to answer this question to get your answer accepted.

Getting the Relationship contact field on Android

I am working with Androids contacts and trying to get particular pieces of data. I can already get emails, phone numbers, their name, etc. However I am having difficulty getting the relationship field.
http://developer.android.com/reference/android/provider/ContactsContract.CommonDataKinds.Relation.html
So my goal is: Given a particular userid (from the contact database on Android), figure out their relation field.

This should work. The idea is to connect search in the Data table but use stuff from CommonDataKinds. This is done in where clause ... Data.MIMETYPE == CommonDataKinds.Relation.CONTENT_ITEM_TYPE. This will get you the row with all the Relation stuff.
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract.CommonDataKinds.Relation;
import android.provider.ContactsContract.Data;
import android.util.Log;
...
public void logCatTheRelation(long contactId){
Uri uri = Data.CONTENT_URI;
String where = String.format(
"%s = ? AND %s = ?",
Data.MIMETYPE,
Relation.CONTACT_ID);
String[] whereParams = new String[] {
Relation.CONTENT_ITEM_TYPE,
Long.toString(contactId),
};
String[] selectColumns = new String[]{
Relation.NAME,
// add additional columns here
};
Cursor relationCursor = this.getContentResolver().query(
uri,
selectColumns,
where,
whereParams,
null);
try{
if (relationCursor.moveToFirst()) {
Log.d("gizm0", relationCursor.getString(
relationCursor.getColumnIndex(Relation.NAME)));
}
Log.d("gizm0", "sadly no relation ... ");
}finally{
relationCursor.close();
}
}

Android 3.0 - How to retrieve ALL contacts via ContactsContract

I am working on an Android Honeycomb (v3.0) application that has a requirement of displaying ALL contacts stored within the Google account that is registered on the device. One of the problems I am having is that I can only retrieve the contacts that are available within "My Contacts", "Starred in Android", and "Other Contacts". I would also like to be able to retrieve contacts from the "Directory". I believe that the "Directory" section is a feature provided by Google to organizations and companies who wish to provide a directory of all members/employees within their domains to others. Please see the screenshot below:
So far, I have the following line in my manifest file:
<uses-permission android:name="android.permission.READ_CONTACTS" />
I have tried using this code:
Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
while (cursor.moveToNext()) {
String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
}
cursor.close();
In my case, "My Contacts" and "Starred in Android" are empty. However, the (1) contact in "Other Contacts" is obtained. The "Directory" contains hundreds of contacts that are not retrieved, though.
My question: Is there any way to make sure that the contacts in the "Directory" are retrieved as well? I know that I can simply copy the contacts over using the web browser and then sync them to the device, but if a new contact is added to the "Directory", I would have to do this manually every time, so this is not a great choice for me. Please advise.

look at the following code
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
public class TestContacts extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur
.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur
.getString(cur
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (("1")
.equals(cur
.getString(cur
.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)))) {
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = ?", new String[] { id }, null);
int i = 0;
int pCount = pCur.getCount();
String[] phoneNum = new String[pCount];
String[] phoneType = new String[pCount];
while (pCur.moveToNext()) {
phoneNum[i] = pCur
.getString(pCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
phoneType[i] = pCur
.getString(pCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE));
i++;
}
}

Android Getting the contacts when clicked on to the edit text

I am trying to get the selected contact number form the phone book when a button is clicked.Could any me please tell me how to get the contact number to the edit text.
Thanks in advance

// using Content Provider you can do it
There are some helper methods, particularly ContentUris.withAppendedId() and Uri.withAppendedPath(), that make it easy to append an ID to a URI. Both are static methods that return a Uri object with the ID added. So, for example, if you were looking for record 23 in the database of people contacts, you might construct a query as follows:
import android.provider.Contacts.People;
import android.content.ContentUris;
import android.net.Uri;
import android.database.Cursor;
// Use the ContentUris method to produce the base URI for the contact with _ID == 23.
Uri myPerson = ContentUris.withAppendedId(People.CONTENT_URI, 23);
// Alternatively, use the Uri method to produce the base URI.
// It takes a string rather than an integer.
Uri myPerson = Uri.withAppendedPath(People.CONTENT_URI, "23");
// Then query for this specific record:
Cursor cur = managedQuery(myPerson, null, null, null, null);
refer this

Unable to get phone number from contact list... code inside

Im new to android and programming in general (im a linux sys admin / scripting person). And Ive been trying to get a simple android app going to get a feel for programming but I am having some problems.
I was able to string together some ideas and queries to get a list view of all the contacts, but now id like to be able to grab the phone number of the selected contact but I am not having any luck... I know there is probably better ways to do what I am doing but Im just trying to get a grasp on this.
Code first:
package com.SomeApp;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.database.Cursor;
//import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
public class CallAppActivity extends ListActivity
{ /** Called when the activity is first created. */
private ListAdapter mAdapter;
#Override
public void onCreate(Bundle savedInstanceState)
{ super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//Get All information from ContactsContract
Cursor managedCursor = getContentResolver().query(
ContactsContract.Contacts.CONTENT_URI,
null,
null,
null,
null
);
//Activity will manage the cursor lifecycle.
startManagingCursor(managedCursor);
String[] columns = new String[] {ContactsContract.Contacts.DISPLAY_NAME};
int[] names = new int[] {R.id.contact_entry};
mAdapter = new SimpleCursorAdapter(
this,
R.layout.main,
managedCursor,
columns,
names
);
setListAdapter(mAdapter);
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id)
{ super.onListItemClick(l, v, position, id);
Cursor lookup = (Cursor) mAdapter.getItem(position);
String contactId = lookup.getString(
lookup.getColumnIndex(
ContactsContract.Contacts._ID
)
);
Cursor phone_num = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId,
null,
null
);
String phoneId = phone_num.getString(
phone_num.getColumnIndex(
ContactsContract.CommonDataKinds.Phone.NUMBER
)
);
//We are going to print shit to a message box....
AlertDialog.Builder alertbox = new AlertDialog.Builder(this);
alertbox.setMessage(phoneId);
alertbox.show();
}
}
And now the logcat....
07-23 11:35:34.469: WARN/dalvikvm(781): threadid=1: thread exiting with uncaught exception (group=0x40015560)
07-23 11:35:34.479: ERROR/AndroidRuntime(781): FATAL EXCEPTION: main
07-23 11:35:34.479: ERROR/AndroidRuntime(781): android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 1
No matter what Contact I pick I get the same exception, So I obviously am doing something wrong.. I just cant quite figure it out on my own :(
Any help appreciated.

Did you tried to make cursor pointer point to the first row to its data like cursor.moveToFirst() before you access data inside it? Actually, for Cursor phone_num and Cursor phone_id?