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mirror of https://github.com/moparisthebest/k-9 synced 2024-11-30 05:02:26 -05:00

Remove contacts helper code specific to SDK 7

This commit is contained in:
cketti 2013-06-25 22:47:47 +02:00
parent 06ae2a071b
commit b03b487d62
3 changed files with 267 additions and 454 deletions

View File

@ -1,55 +1,76 @@
package com.fsck.k9.helper; package com.fsck.k9.helper;
import android.content.ContentResolver; import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context; import android.content.Context;
import android.database.Cursor; import android.database.Cursor;
import android.net.Uri; import android.net.Uri;
import android.os.Build;
import android.content.Intent; import android.content.Intent;
import android.provider.ContactsContract;
import android.util.Log;
import com.fsck.k9.K9;
import com.fsck.k9.mail.Address; import com.fsck.k9.mail.Address;
/** import java.util.ArrayList;
* 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 ContactsSdk5
* @see ContactsSdk5p
*/
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. * Helper class to access the contacts stored on the device.
*/
public class Contacts {
/**
* The order in which the search results are returned by
* {@link #searchContacts(CharSequence)}.
*/
protected static final String SORT_ORDER =
ContactsContract.CommonDataKinds.Email.TIMES_CONTACTED + " DESC, " +
ContactsContract.Contacts.DISPLAY_NAME + ", " +
ContactsContract.CommonDataKinds.Email._ID;
/**
* 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}.
*/
protected static final String PROJECTION[] = {
ContactsContract.CommonDataKinds.Email._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Email.DATA,
ContactsContract.CommonDataKinds.Email.CONTACT_ID
};
/**
* Index of the name field in the projection. This must match the order in
* {@link #PROJECTION}.
*/
protected static final int NAME_INDEX = 1;
/**
* Index of the email address field in the projection. This must match the
* order in {@link #PROJECTION}.
*/
protected static final int EMAIL_INDEX = 2;
/**
* Index of the contact id field in the projection. This must match the order in
* {@link #PROJECTION}.
*/
protected static final int CONTACT_ID_INDEX = 3;
/**
* Get instance of the Contacts class.
*
* <p>Note: This is left over from the days when we needed to have SDK-specific code to access
* the contacts.</p>
* *
* @param context A {@link Context} instance. * @param context A {@link Context} instance.
* @return Appropriate {@link Contacts} instance for this device. * @return Appropriate {@link Contacts} instance for this device.
*/ */
public static Contacts getInstance(Context context) { public static Contacts getInstance(Context context) {
Context appContext = context.getApplicationContext(); return new Contacts(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.
*/
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.ECLAIR_MR1) {
/*
* The new API was introduced with SDK 5. But Android versions < 2.2
* need some additional code to be able to search for phonetic names.
*/
sInstance = new ContactsSdk5p(appContext);
} else {
sInstance = new ContactsSdk5(appContext);
}
}
return sInstance;
} }
@ -76,7 +97,25 @@ public abstract class Contacts {
* the instance also contains the (display) name of that * the instance also contains the (display) name of that
* entity. * entity.
*/ */
public abstract void createContact(Address email); public void createContact(final Address email) {
final Uri contactUri = Uri.fromParts("mailto", email.getAddress(), null);
final Intent contactIntent = new Intent(ContactsContract.Intents.SHOW_OR_CREATE_CONTACT);
contactIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
contactIntent.setData(contactUri);
// Pass along full E-mail string for possible create dialog
contactIntent.putExtra(ContactsContract.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(ContactsContract.Intents.Insert.NAME, senderPersonal);
}
mContext.startActivity(contactIntent);
}
/** /**
* Start the activity to add a phone number to an existing contact or add a new one. * Start the activity to add a phone number to an existing contact or add a new one.
@ -84,7 +123,13 @@ public abstract class Contacts {
* @param phoneNumber * @param phoneNumber
* The phone number to add to a contact, or to use when creating a new contact. * The phone number to add to a contact, or to use when creating a new contact.
*/ */
public abstract void addPhoneContact(String phoneNumber); public void addPhoneContact(final String phoneNumber) {
Intent addIntent = new Intent(Intent.ACTION_INSERT_OR_EDIT);
addIntent.setType(ContactsContract.Contacts.CONTENT_ITEM_TYPE);
addIntent.putExtra(ContactsContract.Intents.Insert.PHONE, Uri.decode(phoneNumber));
addIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(addIntent);
}
/** /**
* Check whether the provided email address belongs to one of the contacts. * Check whether the provided email address belongs to one of the contacts.
@ -93,16 +138,52 @@ public abstract class Contacts {
* @return <tt>true</tt>, if the email address belongs to a contact. * @return <tt>true</tt>, if the email address belongs to a contact.
* <tt>false</tt>, otherwise. * <tt>false</tt>, otherwise.
*/ */
public abstract boolean isInContacts(String emailAddress); public boolean isInContacts(final String emailAddress) {
boolean result = false;
final Cursor c = getContactByAddress(emailAddress);
if (c != null) {
if (c.getCount() > 0) {
result = true;
}
c.close();
}
return result;
}
/** /**
* Filter the contacts matching the given search term. * Filter the contacts matching the given search term.
* *
* @param filter The search term to filter the contacts. * @param constraint The search term to filter the contacts.
* @return A {@link Cursor} instance that can be used to get the * @return A {@link Cursor} instance that can be used to get the
* matching contacts. * matching contacts.
*/ */
public abstract Cursor searchContacts(CharSequence filter); public Cursor searchContacts(final CharSequence constraint) {
final String filter = (constraint == null) ? "" : constraint.toString();
final Uri uri = Uri.withAppendedPath(ContactsContract.CommonDataKinds.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;
}
/** /**
* Get the name of the contact an email address belongs to. * Get the name of the contact an email address belongs to.
@ -111,7 +192,24 @@ public abstract class Contacts {
* @return The name of the contact the email address belongs to. Or * @return The name of the contact the email address belongs to. Or
* <tt>null</tt> if there's no matching contact. * <tt>null</tt> if there's no matching contact.
*/ */
public abstract String getNameForAddress(String address); public String getNameForAddress(String address) {
if (address == null) {
return null;
}
final Cursor c = getContactByAddress(address);
String name = null;
if (c != null) {
if (c.getCount() > 0) {
c.moveToFirst();
name = getName(c);
}
c.close();
}
return name;
}
/** /**
* Extract the name from a {@link Cursor} instance returned by * Extract the name from a {@link Cursor} instance returned by
@ -120,7 +218,9 @@ public abstract class Contacts {
* @param cursor The {@link Cursor} instance. * @param cursor The {@link Cursor} instance.
* @return The name of the contact in the {@link Cursor}'s current row. * @return The name of the contact in the {@link Cursor}'s current row.
*/ */
public abstract String getName(Cursor cursor); public String getName(Cursor cursor) {
return cursor.getString(NAME_INDEX);
}
/** /**
* Extract the email address from a {@link Cursor} instance returned by * Extract the email address from a {@link Cursor} instance returned by
@ -130,7 +230,9 @@ public abstract class Contacts {
* @return The email address of the contact in the {@link Cursor}'s current * @return The email address of the contact in the {@link Cursor}'s current
* row. * row.
*/ */
public abstract String getEmail(Cursor cursor); public String getEmail(Cursor cursor) {
return cursor.getString(EMAIL_INDEX);
}
/** /**
* Mark contacts with the provided email addresses as contacted. * Mark contacts with the provided email addresses as contacted.
@ -138,14 +240,30 @@ public abstract class Contacts {
* @param addresses Array of {@link Address} objects describing the * @param addresses Array of {@link Address} objects describing the
* contacts to be marked as contacted. * contacts to be marked as contacted.
*/ */
public abstract void markAsContacted(final Address[] addresses); public void markAsContacted(final Address[] addresses) {
//TODO: Optimize! Potentially a lot of database queries
for (final Address address : addresses) {
final Cursor c = getContactByAddress(address.getAddress());
if (c != null) {
if (c.getCount() > 0) {
c.moveToFirst();
final long personId = c.getLong(CONTACT_ID_INDEX);
ContactsContract.Contacts.markAsContacted(mContentResolver, personId);
}
c.close();
}
}
}
/** /**
* Creates the intent necessary to open a contact picker. * Creates the intent necessary to open a contact picker.
* *
* @return The intent necessary to open a contact picker. * @return The intent necessary to open a contact picker.
*/ */
public abstract Intent contactPickerIntent(); public Intent contactPickerIntent() {
return new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
}
/** /**
* Given a contact picker intent, returns a {@code ContactItem} instance for that contact. * Given a contact picker intent, returns a {@code ContactItem} instance for that contact.
@ -156,7 +274,52 @@ public abstract class Contacts {
* @return A {@link ContactItem} instance describing the picked contact. Or {@code null} if the * @return A {@link ContactItem} instance describing the picked contact. Or {@code null} if the
* contact doesn't have any email addresses. * contact doesn't have any email addresses.
*/ */
public abstract ContactItem extractInfoFromContactPickerIntent(final Intent intent); public ContactItem extractInfoFromContactPickerIntent(final Intent intent) {
Cursor cursor = null;
ArrayList<String> email = new ArrayList<String>();
try {
Uri result = intent.getData();
String displayName = null;
// Get the contact id from the Uri
String id = result.getLastPathSegment();
cursor = mContentResolver.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, PROJECTION,
ContactsContract.CommonDataKinds.Email.CONTACT_ID + "=?", new String[] { id }, null);
if (cursor != null) {
while (cursor.moveToNext()) {
String address = cursor.getString(EMAIL_INDEX);
if (address != null) {
email.add(address);
}
if (displayName == null) {
displayName = cursor.getString(NAME_INDEX);
}
}
// Return 'null' if no email addresses have been found
if (email.size() == 0) {
return null;
}
// Use the first email address found as display name
if (displayName == null) {
displayName = email.get(0);
}
return new ContactItem(displayName, email);
}
} catch (Exception e) {
Log.e(K9.LOG_TAG, "Failed to get email data", e);
} finally {
Utility.closeQuietly(cursor);
}
return null;
}
/** /**
* Get URI to the picture of the contact with the supplied email address. * Get URI to the picture of the contact with the supplied email address.
@ -168,7 +331,47 @@ public abstract class Contacts {
* @return URI to the picture of the contact with the supplied email address. {@code null} if * @return URI to the picture of the contact with the supplied email address. {@code null} if
* no such contact could be found or the contact doesn't have a picture. * no such contact could be found or the contact doesn't have a picture.
*/ */
public abstract Uri getPhotoUri(String address); public Uri getPhotoUri(String address) {
Long contactId;
try {
final Cursor c = getContactByAddress(address);
if (c == null) {
return null;
}
try {
if (!c.moveToFirst()) {
return null;
}
contactId = c.getLong(CONTACT_ID_INDEX);
} finally {
c.close();
}
Cursor cur = mContentResolver.query(
ContactsContract.Data.CONTENT_URI,
null,
ContactsContract.Data.CONTACT_ID + "=" + contactId + " AND "
+ ContactsContract.Data.MIMETYPE + "='"
+ ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE + "'", null,
null);
if (cur == null) {
return null;
}
if (!cur.moveToFirst()) {
cur.close();
return null; // no photo
}
// Ok, they have a photo
cur.close();
Uri person = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, contactId);
return Uri.withAppendedPath(person, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
} catch (Exception e) {
Log.e(K9.LOG_TAG, "Couldn't fetch photo for contact with email " + address, e);
return null;
}
}
/** /**
* Does the device actually have a Contacts application suitable for * Does the device actually have a Contacts application suitable for
@ -184,4 +387,24 @@ public abstract class Contacts {
} }
return mHasContactPicker; return mHasContactPicker;
} }
/**
* Return a {@link Cursor} instance that can be used to fetch information
* about the contact with the given email address.
*
* @param address The email address to search for.
* @return A {@link Cursor} instance that can be used to fetch information
* about the contact with the given email address
*/
private Cursor getContactByAddress(final String address) {
final Uri uri = Uri.withAppendedPath(ContactsContract.CommonDataKinds.Email.CONTENT_LOOKUP_URI, Uri.encode(address));
final Cursor c = mContentResolver.query(
uri,
PROJECTION,
null,
null,
SORT_ORDER);
return c;
}
} }

View File

@ -1,305 +0,0 @@
package com.fsck.k9.helper;
import java.util.ArrayList;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.util.Log;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.Intents;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.provider.ContactsContract.Intents.Insert;
import com.fsck.k9.mail.Address;
import com.fsck.k9.K9;
/**
* 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)}.
*/
protected static final String SORT_ORDER =
Email.TIMES_CONTACTED + " DESC, " +
Contacts.DISPLAY_NAME + ", " +
Email._ID;
/**
* 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}.
*/
protected static final String PROJECTION[] = {
Email._ID,
Contacts.DISPLAY_NAME,
Email.DATA,
Email.CONTACT_ID
};
/**
* Index of the name field in the projection. This must match the order in
* {@link #PROJECTION}.
*/
protected static final int NAME_INDEX = 1;
/**
* Index of the email address field in the projection. This must match the
* order in {@link #PROJECTION}.
*/
protected static final int EMAIL_INDEX = 2;
/**
* Index of the contact id field in the projection. This must match the order in
* {@link #PROJECTION}.
*/
protected static final int CONTACT_ID_INDEX = 3;
public ContactsSdk5(final Context context) {
super(context);
}
@Override
public void createContact(final Address email) {
final Uri contactUri = Uri.fromParts("mailto", email.getAddress(), null);
final Intent contactIntent = new Intent(Intents.SHOW_OR_CREATE_CONTACT);
contactIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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);
}
mContext.startActivity(contactIntent);
}
@Override
public void addPhoneContact(final String phoneNumber) {
Intent addIntent = new Intent(Intent.ACTION_INSERT_OR_EDIT);
addIntent.setType(ContactsContract.Contacts.CONTENT_ITEM_TYPE);
addIntent.putExtra(Insert.PHONE, Uri.decode(phoneNumber));
addIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(addIntent);
}
@Override
public boolean isInContacts(final String emailAddress) {
boolean result = false;
final Cursor c = getContactByAddress(emailAddress);
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 getNameForAddress(String address) {
if (address == null) {
return null;
}
final Cursor c = getContactByAddress(address);
String name = null;
if (c != null) {
if (c.getCount() > 0) {
c.moveToFirst();
name = getName(c);
}
c.close();
}
return name;
}
@Override
public String getName(Cursor c) {
return c.getString(NAME_INDEX);
}
@Override
public String getEmail(Cursor c) {
return c.getString(EMAIL_INDEX);
}
@Override
public void markAsContacted(final Address[] addresses) {
//TODO: Optimize! Potentially a lot of database queries
for (final Address address : addresses) {
final Cursor c = getContactByAddress(address.getAddress());
if (c != null) {
if (c.getCount() > 0) {
c.moveToFirst();
final long personId = c.getLong(CONTACT_ID_INDEX);
ContactsContract.Contacts.markAsContacted(mContentResolver, personId);
}
c.close();
}
}
}
@Override
public Intent contactPickerIntent() {
return new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
}
@Override
public ContactItem extractInfoFromContactPickerIntent(final Intent data) {
Cursor cursor = null;
ArrayList<String> email = new ArrayList<String>();
try {
Uri result = data.getData();
String displayName = null;
// Get the contact id from the Uri
String id = result.getLastPathSegment();
cursor = mContentResolver.query(Email.CONTENT_URI, PROJECTION,
Email.CONTACT_ID + "=?", new String[] { id }, null);
if (cursor != null) {
while (cursor.moveToNext()) {
String address = cursor.getString(EMAIL_INDEX);
if (address != null) {
email.add(address);
}
if (displayName == null) {
displayName = cursor.getString(NAME_INDEX);
}
}
// Return 'null' if no email addresses have been found
if (email.size() == 0) {
return null;
}
// Use the first email address found as display name
if (displayName == null) {
displayName = email.get(0);
}
return new ContactItem(displayName, email);
}
} catch (Exception e) {
Log.e(K9.LOG_TAG, "Failed to get email data", e);
} finally {
Utility.closeQuietly(cursor);
}
return null;
}
/**
* Return a {@link Cursor} instance that can be used to fetch information
* about the contact with the given email address.
*
* @param address The email address to search for.
* @return A {@link Cursor} instance that can be used to fetch information
* about the contact with the given email address
*/
private Cursor getContactByAddress(final String address) {
final Uri uri = Uri.withAppendedPath(Email.CONTENT_LOOKUP_URI, Uri.encode(address));
final Cursor c = mContentResolver.query(
uri,
PROJECTION,
null,
null,
SORT_ORDER);
return c;
}
@Override
public Uri getPhotoUri(String address) {
Long contactId;
try {
final Cursor c = getContactByAddress(address);
if (c == null) {
return null;
}
try {
if (!c.moveToFirst()) {
return null;
}
contactId = c.getLong(CONTACT_ID_INDEX);
} finally {
c.close();
}
Cursor cur = mContentResolver.query(
ContactsContract.Data.CONTENT_URI,
null,
ContactsContract.Data.CONTACT_ID + "=" + contactId + " AND "
+ ContactsContract.Data.MIMETYPE + "='"
+ ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE + "'", null,
null);
if (cur == null) {
return null;
}
if (!cur.moveToFirst()) {
cur.close();
return null; // no photo
}
// Ok, they have a photo
cur.close();
Uri person = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, contactId);
return Uri.withAppendedPath(person, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
} catch (Exception e) {
Log.e(K9.LOG_TAG, "Couldn't fetch photo for contact with email " + address, e);
return null;
}
}
}

View File

@ -1,105 +0,0 @@
package com.fsck.k9.helper;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract.Data;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.provider.ContactsContract.CommonDataKinds.StructuredName;
/**
* Access the contacts on the device using the API introduced with SDK 5.
* Use some additional code to make search work with phonetic names.
*
* Android versions >= 2.2 (Froyo) support searching for phonetic names
* out of the box (see {@link ContactsSdk5}).
*
* @see android.provider.ContactsContract
*/
public class ContactsSdk5p extends ContactsSdk5 {
public ContactsSdk5p(final Context context) {
super(context);
}
@Override
public Cursor searchContacts(final CharSequence constraint) {
if (constraint == null) {
return null;
}
// Lookup using Email.CONTENT_FILTER_URI to get matching contact ids.
// This does all sorts of magic we don't want to replicate.
final String filter = constraint.toString();
final Uri uri = Uri.withAppendedPath(Email.CONTENT_FILTER_URI, Uri.encode(filter));
final Cursor cursor = mContentResolver.query(
uri,
new String[] {Email.CONTACT_ID},
null,
null,
null);
final StringBuilder matches = new StringBuilder();
if ((cursor != null) && (cursor.getCount() > 0)) {
boolean first = true;
while (cursor.moveToNext()) {
if (first) {
first = false;
} else {
matches.append(",");
}
matches.append(cursor.getLong(0));
}
cursor.close();
}
// Find contacts with email addresses that have been found using
// Email.CONTENT_FILTER_URI above or ones that have a matching phonetic name.
final String where = Data.MIMETYPE + " = '" + Email.CONTENT_ITEM_TYPE + "'" +
" AND " +
"(" +
// Match if found by Email.CONTENT_FILTER_URI
Email.CONTACT_ID + " IN (" + matches.toString() + ")" +
" OR " +
// Match if phonetic given name starts with "constraint"
StructuredName.PHONETIC_GIVEN_NAME + " LIKE ?" +
" OR " +
// Match if phonetic given name contains a word that starts with "constraint"
StructuredName.PHONETIC_GIVEN_NAME + " LIKE ?" +
" OR " +
// Match if phonetic middle name starts with "constraint"
StructuredName.PHONETIC_MIDDLE_NAME + " LIKE ?" +
" OR " +
// Match if phonetic middle name contains a word that starts with "constraint"
StructuredName.PHONETIC_MIDDLE_NAME + " LIKE ?" +
" OR " +
// Match if phonetic family name starts with "constraint"
StructuredName.PHONETIC_FAMILY_NAME + " LIKE ?" +
" OR " +
// Match if phonetic family name contains a word that starts with "constraint"
StructuredName.PHONETIC_FAMILY_NAME + " LIKE ?" +
")";
final String filter1 = constraint.toString() + "%";
final String filter2 = "% " + filter1;
final String[] args = new String[] {filter1, filter2, filter1, filter2, filter1, filter2};
final Cursor c = mContentResolver.query(
Email.CONTENT_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;
}
}