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Added helper class to access contacts. Uses the old contacts API for SDK/API 3+4 devices and the new API for SDK/API 5+ devices.

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All places that accessed the contacts have been updated to use this helper class.
This commit is contained in:
cketti 2010-08-14 13:59:33 +00:00
parent 0eb342ef5a
commit 0e4c1dfacb
8 changed files with 563 additions and 267 deletions
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76
src/com/fsck/k9/EmailAddressAdapter.java
View File

@ -16,66 +16,58 @@
package com.fsck.k9;
import android.content.ContentResolver;
import com.fsck.k9.helper.Contacts;
import com.fsck.k9.mail.Address;
import android.content.Context;
import android.os.Build;
import android.database.Cursor;
import android.view.View;
import android.widget.ResourceCursorAdapter;
import android.widget.TextView;
public abstract class EmailAddressAdapter extends ResourceCursorAdapter
public class EmailAddressAdapter extends ResourceCursorAdapter
{
private static EmailAddressAdapter sInstance;
private static Context sContext;
public static EmailAddressAdapter getInstance(Context context)
{
if (sInstance == null)
{
String className;
sContext = context;
/*
* Check the version of the SDK we are running on. Choose an
* implementation class designed for that version of the SDK.
*/
int sdkVersion = Integer.parseInt(Build.VERSION.SDK); // Cupcake style
if (sdkVersion < Build.VERSION_CODES.ECLAIR)
{
className = "com.fsck.k9.EmailAddressAdapterSdk3_4";
}
else
{
className = "com.fsck.k9.EmailAddressAdapterSdk5";
}
/*
* Find the required class by name and instantiate it.
*/
try
{
Class<? extends EmailAddressAdapter> clazz =
Class.forName(className).asSubclass(EmailAddressAdapter.class);
sInstance = clazz.newInstance();
}
catch (Exception e)
{
throw new IllegalStateException(e);
}
sInstance = new EmailAddressAdapter(context);
}
return sInstance;
}
public static Context getContext()
private Contacts mContacts;
private EmailAddressAdapter(Context context)
{
return sContext;
super(context, R.layout.recipient_dropdown_item, null);
mContacts = Contacts.getInstance(context);
}
protected ContentResolver mContentResolver;
public EmailAddressAdapter()
@Override
public final String convertToString(final Cursor cursor)
{
super(getContext(), R.layout.recipient_dropdown_item, null);
mContentResolver = getContext().getContentResolver();
final String name = mContacts.getName(cursor);
final String address = mContacts.getEmail(cursor);;
return new Address(address, name).toString();
}
@Override
public final void bindView(final View view, final Context context, final Cursor cursor)
{
final TextView text1 = (TextView) view.findViewById(R.id.text1);
final TextView text2 = (TextView) view.findViewById(R.id.text2);
text1.setText(mContacts.getName(cursor));
text2.setText(mContacts.getEmail(cursor));
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint)
{
return mContacts.searchContacts(constraint);
}
}

85
src/com/fsck/k9/EmailAddressAdapterSdk3_4.java
View File

@ -1,85 +0,0 @@
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.fsck.k9;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.provider.Contacts.ContactMethods;
import android.provider.Contacts.People;
import android.view.View;
import android.widget.TextView;
import com.fsck.k9.mail.Address;
import static android.provider.Contacts.ContactMethods.CONTENT_EMAIL_URI;
@SuppressWarnings("deprecation")
public class EmailAddressAdapterSdk3_4 extends EmailAddressAdapter
{
public static final int NAME_INDEX = 1;
public static final int DATA_INDEX = 2;
private static final String SORT_ORDER = People.TIMES_CONTACTED + " DESC, " + People.NAME;
private static final String[] PROJECTION =
{
ContactMethods._ID, // 0
ContactMethods.NAME, // 1
ContactMethods.DATA // 2
};
@Override
public final String convertToString(Cursor cursor)
{
String name = cursor.getString(NAME_INDEX);
String address = cursor.getString(DATA_INDEX);
return new Address(address, name).toString();
}
@Override
public final void bindView(View view, Context context, Cursor cursor)
{
TextView text1 = (TextView)view.findViewById(R.id.text1);
TextView text2 = (TextView)view.findViewById(R.id.text2);
text1.setText(cursor.getString(NAME_INDEX));
text2.setText(cursor.getString(DATA_INDEX));
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint)
{
String where = null;
if (constraint != null)
{
String filter = DatabaseUtils.sqlEscapeString(constraint.toString() + '%');
StringBuilder s = new StringBuilder();
s.append("("+People.NAME+" LIKE ");
s.append(filter);
s.append(") OR ("+ContactMethods.DATA+" LIKE ");
s.append(filter);
s.append(")");
where = s.toString();
}
return mContentResolver.query(CONTENT_EMAIL_URI, PROJECTION, where, null, SORT_ORDER);
}
}

79
src/com/fsck/k9/EmailAddressAdapterSdk5.java
View File

@ -1,79 +0,0 @@
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.fsck.k9;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.provider.ContactsContract.Contacts.Data;
import android.view.View;
import android.widget.TextView;
import com.fsck.k9.mail.Address;
public class EmailAddressAdapterSdk5 extends EmailAddressAdapter
{
public static final int NAME_INDEX = 1;
public static final int DATA_INDEX = 2;
private static final String SORT_ORDER = Contacts.TIMES_CONTACTED
+ " DESC, " + Contacts.DISPLAY_NAME;
private static final String[] PROJECTION =
{
Data._ID, // 0
Contacts.DISPLAY_NAME, // 1
Email.DATA // 2
};
@Override
public final String convertToString(Cursor cursor)
{
String name = cursor.getString(NAME_INDEX);
String address = cursor.getString(DATA_INDEX);
return new Address(address, name).toString();
}
@Override
public final void bindView(View view, Context context, Cursor cursor)
{
TextView text1 = (TextView) view.findViewById(R.id.text1);
TextView text2 = (TextView) view.findViewById(R.id.text2);
text1.setText(cursor.getString(NAME_INDEX));
text2.setText(cursor.getString(DATA_INDEX));
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint)
{
String filter = constraint == null ? "" : constraint.toString();
Uri uri = Uri.withAppendedPath(Email.CONTENT_FILTER_URI, Uri.encode(filter));
Cursor c = mContentResolver.query(uri, PROJECTION, null, null, SORT_ORDER);
// To prevent expensive execution in the UI thread
// Cursors get lazily executed, so if you don't call anything on the cursor before
// returning it from the background thread you'll have a complied program for the cursor,
// but it won't have been executed to generate the data yet. Often the execution is more
// expensive than the compilation...
if (c != null)
{
c.getCount();
}
return c;
}
}

54
src/com/fsck/k9/activity/MessageView.java
View File

@ -27,8 +27,6 @@ import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.provider.Contacts;
import android.provider.Contacts.Intents;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.style.StyleSpan;
@ -55,9 +53,6 @@ import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.provider.ContactsContract.Data;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.database.Cursor;
import com.fsck.k9.Account;
import com.fsck.k9.FontSizes;
@ -67,6 +62,7 @@ import com.fsck.k9.R;
import com.fsck.k9.controller.MessagingController;
import com.fsck.k9.controller.MessagingListener;
import com.fsck.k9.crypto.CryptoProvider;
import com.fsck.k9.helper.Contacts;
import com.fsck.k9.mail.Address;
import com.fsck.k9.mail.Flag;
import com.fsck.k9.mail.Message;
@ -156,6 +152,8 @@ public class MessageView extends K9Activity implements OnClickListener
private FontSizes mFontSizes = K9.getFontSizes();
private Contacts mContacts;
/**
* Pair class is only available since API Level 5, so we need
* this helper class unfortunately
@ -724,6 +722,7 @@ public class MessageView extends K9Activity implements OnClickListener
{
super.onCreate(icicle, false);
mContacts = Contacts.getInstance(this);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
requestWindowFeature(Window.FEATURE_NO_TITLE);
@ -1294,31 +1293,12 @@ public class MessageView extends K9Activity implements OnClickListener
{
try
{
Address senderEmail = mMessage.getFrom()[0];
Uri contactUri = Uri.fromParts("mailto", senderEmail.getAddress(), null);
Intent contactIntent = new Intent(Contacts.Intents.SHOW_OR_CREATE_CONTACT);
contactIntent.setData(contactUri);
// Pass along full E-mail string for possible create dialog
contactIntent.putExtra(Contacts.Intents.EXTRA_CREATE_DESCRIPTION,
senderEmail.toString());
// Only provide personal name hint if we have one
String senderPersonal = senderEmail.getPersonal();
if (senderPersonal != null)
{
contactIntent.putExtra(Intents.Insert.NAME, senderPersonal);
}
startActivity(contactIntent);
final Address senderEmail = mMessage.getFrom()[0];
mContacts.createContact(this, senderEmail);
}
catch (MessagingException me)
catch (Exception e)
{
if (Config.LOGV)
{
Log.v(K9.LOG_TAG, "loadMessageForViewHeadersAvailable", me);
}
Log.e(K9.LOG_TAG, "Couldn't create contact", e);
}
}
}
@ -2168,24 +2148,12 @@ public class MessageView extends K9Activity implements OnClickListener
if (hasPictures && (mShowPictures == false))
{
boolean forceShowPictures = false;
if (account.getShowPictures() == Account.ShowPictures.ALWAYS)
if ((account.getShowPictures() == Account.ShowPictures.ALWAYS) ||
((account.getShowPictures() == Account.ShowPictures.ONLY_FROM_CONTACTS) &&
mContacts.isInContacts(message.getFrom()[0].getAddress())))
{
forceShowPictures = true;
}
else if (account.getShowPictures() == Account.ShowPictures.ONLY_FROM_CONTACTS)
{
// TODO: change to _COUNT for speed
Cursor c = getContentResolver().query(Data.CONTENT_URI, new String[]{Data._ID},
Data.MIMETYPE + "='" + Email.CONTENT_ITEM_TYPE + "' AND "
+ Data.DATA1 + "=? AND "
+ Data.IN_VISIBLE_GROUP + "='1'",
new String[] { message.getFrom()[0].getAddress() }, null);
if ((c != null) && (c.getCount() > 0))
{
forceShowPictures = true;
}
}
if (forceShowPictures)
{

20
src/com/fsck/k9/activity/setup/AccountSetupBasics.java
View File

@ -7,11 +7,7 @@ import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.XmlResourceParser;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts;
import android.provider.Contacts.People.ContactMethods;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
@ -22,6 +18,7 @@ import android.widget.CheckBox;
import android.widget.EditText;
import com.fsck.k9.*;
import com.fsck.k9.activity.K9Activity;
import com.fsck.k9.helper.Contacts;
import com.fsck.k9.helper.Utility;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
@ -153,20 +150,7 @@ public class AccountSetupBasics extends K9Activity
String name = null;
try
{
String projection[] =
{
ContactMethods.NAME
};
Cursor c = getContentResolver().query(
// TODO: For Android 2.0, needs to change to ContactsContract.People...
Uri.withAppendedPath(Contacts.People.CONTENT_URI, "owner"), projection, null, null,
null);
if (c.getCount() > 0)
{
c.moveToFirst();
name = c.getString(0);
c.close();
}
name = Contacts.getInstance(this).getOwnerName();
}
catch (Exception e)
{

168
src/com/fsck/k9/helper/Contacts.java Normal file
View File

@ -0,0 +1,168 @@
package com.fsck.k9.helper;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.os.Build;
import android.util.Log;
import com.fsck.k9.K9;
import com.fsck.k9.mail.Address;
/**
* Helper class to access the contacts stored on the device. This is needed
* because the original contacts API introduced with SDK 1 was deprecated with
* SDK 5 and will eventually be removed in newer SDK versions.
* A class that uses the latest contacts API available on the device will be
* loaded at runtime.
*
* @see ContactsSdk3_4
* @see ContactsSdk5
*/
public abstract class Contacts
{
/**
* Instance of the SDK specific class that interfaces with the contacts
* API.
*/
private static Contacts sInstance = null;
/**
* Get SDK specific instance of the Contacts class.
*
* @param context A {@link Context} instance.
* @return Appropriate {@link Contacts} instance for this device.
*/
public static Contacts getInstance(Context context)
{
if (sInstance == null)
{
/*
* Check the version of the SDK we are running on. Choose an
* implementation class designed for that version of the SDK.
*/
int sdkVersion = Integer.parseInt(Build.VERSION.SDK);
String className = null;
if (sdkVersion <= Build.VERSION_CODES.DONUT)
{
className = "com.fsck.k9.helper.ContactsSdk3_4";
}
else if (sdkVersion >= Build.VERSION_CODES.ECLAIR)
{
className = "com.fsck.k9.helper.ContactsSdk5";
}
/*
* Find the required class by name and instantiate it.
*/
try
{
Class<? extends Contacts> clazz =
Class.forName(className).asSubclass(Contacts.class);
Constructor<? extends Contacts> constructor = clazz.getConstructor(Context.class);
sInstance = constructor.newInstance(context);
}
catch (ClassNotFoundException e)
{
Log.e(K9.LOG_TAG, "Couldn't find class: " + className, e);
}
catch (InstantiationException e)
{
Log.e(K9.LOG_TAG, "Couldn't instantiate class: " + className, e);
}
catch (IllegalAccessException e)
{
Log.e(K9.LOG_TAG, "Couldn't access class: " + className, e);
}
catch (NoSuchMethodException e)
{
Log.e(K9.LOG_TAG, "Couldn't find constructor of class: " + className, e);
}
catch (IllegalArgumentException e)
{
Log.e(K9.LOG_TAG, "Wrong arguments for constructor of class: " + className, e);
}
catch (InvocationTargetException e)
{
Log.e(K9.LOG_TAG, "Couldn't invoke constructor of class: " + className, e);
}
}
return sInstance;
}
protected Context mContext;
protected ContentResolver mContentResolver;
/**
* Constructor
*
* @param context A {@link Context} instance.
*/
protected Contacts(Context context)
{
mContext = context;
mContentResolver = context.getContentResolver();
}
/**
* Get the name of the device's owner.
*
* @return The name of the owner if available. <tt>null</tt>, otherwise.
*/
public abstract String getOwnerName();
/**
* Start the activity to add information to an existing contact or add a
* new one.
*
* @param activity Object of the currently active activity.
* @param email An {@link Address} instance containing the email address
* of the entity you want to add to the contacts. Optionally
* the instance also contains the (display) name of that
* entity.
*/
public abstract void createContact(Activity activity, Address email);
/**
* Check whether the provided email address belongs to one of the contacts.
*
* @param emailAddress The email address to look for.
* @return <tt>true</tt>, if the email address belongs to a contact.
* <tt>false</tt>, otherwise.
*/
public abstract boolean isInContacts(String emailAddress);
/**
* Filter the contacts matching the given search term.
*
* @param filter The search term to filter the contacts.
* @return A {@link Cursor} instance that can be used to get the
* matching contacts.
*/
public abstract Cursor searchContacts(CharSequence filter);
/**
* Extract the name from a {@link Cursor} instance returned by
* {@link #searchContacts(CharSequence)}.
*
* @param cursor The {@link Cursor} instance.
* @return The name of the contact in the {@link Cursor}'s current row.
*/
public abstract String getName(Cursor cursor);
/**
* Extract the email address from a {@link Cursor} instance returned by
* {@link #searchContacts(CharSequence)}.
*
* @param cursor The {@link Cursor} instance.
* @return The email address of the contact in the {@link Cursor}'s current
* row.
*/
public abstract String getEmail(Cursor cursor);
}

186
src/com/fsck/k9/helper/ContactsSdk3_4.java Normal file
View File

@ -0,0 +1,186 @@
package com.fsck.k9.helper;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.Contacts;
import com.fsck.k9.mail.Address;
/**
* Access the contacts on the device using the old API (introduced in SDK 1).
*
* @see android.provider.Contacts
*/
@SuppressWarnings("deprecation")
public class ContactsSdk3_4 extends com.fsck.k9.helper.Contacts
{
/**
* The order in which the search results are returned by
* {@link #searchContacts(CharSequence)}.
*/
private static final String SORT_ORDER =
Contacts.People.TIMES_CONTACTED + " DESC, " +
Contacts.People.NAME;
/**
* Array of columns to load from the database.
*
* Important: The _ID field is needed by
* {@link com.fsck.k9.EmailAddressAdapter} or more specificly by
* {@link android.widget.ResourceCursorAdapter}.
*/
private static final String PROJECTION[] = {
Contacts.People.ContactMethods._ID,
Contacts.People.ContactMethods.NAME,
Contacts.People.ContactMethods.DATA
};
/**
* Index of the name field in the projection. This must match the order in
* {@link #PROJECTION}.
*/
private static final int NAME_INDEX = 1;
/**
* Index of the email address field in the projection. This must match the
* order in {@link #PROJECTION}.
*/
private static final int EMAIL_INDEX = 2;
public ContactsSdk3_4(final Context context)
{
super(context);
}
@Override
public void createContact(final Activity activity, final Address email)
{
final Uri contactUri = Uri.fromParts("mailto", email.getAddress(), null);
final Intent contactIntent = new Intent(Contacts.Intents.SHOW_OR_CREATE_CONTACT);
contactIntent.setData(contactUri);
// Pass along full E-mail string for possible create dialog
contactIntent.putExtra(Contacts.Intents.EXTRA_CREATE_DESCRIPTION,
email.toString());
// Only provide personal name hint if we have one
final String senderPersonal = email.getPersonal();
if (senderPersonal != null)
{
contactIntent.putExtra(Contacts.Intents.Insert.NAME, senderPersonal);
}
activity.startActivity(contactIntent);
}
@Override
public String getOwnerName()
{
String name = null;
final Cursor c = mContentResolver.query(
Uri.withAppendedPath(Contacts.People.CONTENT_URI, "owner"),
PROJECTION,
null,
null,
null);
if (c != null)
{
if (c.getCount() > 0)
{
c.moveToFirst();
name = c.getString(NAME_INDEX);
}
c.close();
}
return name;
}
@Override
public boolean isInContacts(final String emailAddress)
{
boolean result = false;
final String where = Contacts.ContactMethods.DATA + "=?";
final String[] args = new String[] {emailAddress};
final Cursor c = mContentResolver.query(
Contacts.ContactMethods.CONTENT_EMAIL_URI,
PROJECTION,
where,
args,
null);
if (c != null)
{
if (c.getCount() > 0)
{
result = true;
}
c.close();
}
return result;
}
@Override
public Cursor searchContacts(final CharSequence constraint)
{
final String where;
final String[] args;
if (constraint == null)
{
where = null;
args = null;
}
else
{
where = "(" +
Contacts.People.NAME + " LIKE ?" +
") OR (" +
Contacts.ContactMethods.DATA + " LIKE ?" +
")";
final String filter = constraint.toString() + "%";
args = new String[] {filter, filter};
}
final Cursor c = mContentResolver.query(
Contacts.ContactMethods.CONTENT_EMAIL_URI,
PROJECTION,
where,
args,
SORT_ORDER);
if (c != null)
{
/*
* To prevent expensive execution in the UI thread:
* Cursors get lazily executed, so if you don't call anything on
* the cursor before returning it from the background thread you'll
* have a complied program for the cursor, but it won't have been
* executed to generate the data yet. Often the execution is more
* expensive than the compilation...
*/
c.getCount();
}
return c;
}
@Override
public String getName(Cursor c)
{
return c.getString(NAME_INDEX);
}
@Override
public String getEmail(Cursor c)
{
return c.getString(EMAIL_INDEX);
}
}

162
src/com/fsck/k9/helper/ContactsSdk5.java Normal file
View File

@ -0,0 +1,162 @@
package com.fsck.k9.helper;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.Intents;
import android.provider.ContactsContract.CommonDataKinds.Email;
import com.fsck.k9.mail.Address;
/**
* Access the contacts on the device using the API introduced with SDK 5.
*
* @see android.provider.ContactsContract
*/
public class ContactsSdk5 extends com.fsck.k9.helper.Contacts
{
/**
* The order in which the search results are returned by
* {@link #searchContacts(CharSequence)}.
*/
private static final String SORT_ORDER =
Contacts.TIMES_CONTACTED + " DESC, " +
Contacts.DISPLAY_NAME;
/**
* Array of columns to load from the database.
*
* Important: The _ID field is needed by
* {@link com.fsck.k9.EmailAddressAdapter} or more specificly by
* {@link android.widget.ResourceCursorAdapter}.
*/
private static final String PROJECTION[] = {
Contacts._ID,
Contacts.DISPLAY_NAME,
Email.DATA
};
/**
* Index of the name field in the projection. This must match the order in
* {@link #PROJECTION}.
*/
private static final int NAME_INDEX = 1;
/**
* Index of the email address field in the projection. This must match the
* order in {@link #PROJECTION}.
*/
private static final int EMAIL_INDEX = 2;
public ContactsSdk5(final Context context)
{
super(context);
}
@Override
public void createContact(final Activity activity, final Address email)
{
final Uri contactUri = Uri.fromParts("mailto", email.getAddress(), null);
final Intent contactIntent = new Intent(Intents.SHOW_OR_CREATE_CONTACT);
contactIntent.setData(contactUri);
// Pass along full E-mail string for possible create dialog
contactIntent.putExtra(Intents.EXTRA_CREATE_DESCRIPTION,
email.toString());
// Only provide personal name hint if we have one
final String senderPersonal = email.getPersonal();
if (senderPersonal != null)
{
contactIntent.putExtra(Intents.Insert.NAME, senderPersonal);
}
activity.startActivity(contactIntent);
}
@Override
public String getOwnerName()
{
String name = null;
// Get the name of the first account that has one.
Account[] accounts = AccountManager.get(mContext).getAccounts();
for (final Account account : accounts)
{
if (account.name != null)
{
name = account.name;
break;
}
}
return name;
}
@Override
public boolean isInContacts(final String emailAddress)
{
boolean result = false;
final Uri uri = Uri.withAppendedPath(Email.CONTENT_LOOKUP_URI, Uri.encode(emailAddress));
final Cursor c = mContentResolver.query(uri, PROJECTION, null, null, null);
if (c != null)
{
if (c.getCount() > 0)
{
result = true;
}
c.close();
}
return result;
}
@Override
public Cursor searchContacts(final CharSequence constraint)
{
final String filter = (constraint == null) ? "" : constraint.toString();
final Uri uri = Uri.withAppendedPath(Email.CONTENT_FILTER_URI, Uri.encode(filter));
final Cursor c = mContentResolver.query(
uri,
PROJECTION,
null,
null,
SORT_ORDER);
if (c != null)
{
/*
* To prevent expensive execution in the UI thread:
* Cursors get lazily executed, so if you don't call anything on
* the cursor before returning it from the background thread you'll
* have a complied program for the cursor, but it won't have been
* executed to generate the data yet. Often the execution is more
* expensive than the compilation...
*/
c.getCount();
}
return c;
}
@Override
public String getName(Cursor c)
{
return c.getString(NAME_INDEX);
}
@Override
public String getEmail(Cursor c)
{
return c.getString(EMAIL_INDEX);
}
}