I am starting to use Core Spotlight to index items in my app. As I figured it would, the app crashes on my device, but not the simulator, because I have 2000+ items to index. I noticed I start getting memory warning by the time I add about 427 items to my NSMutableArray holding my items, and crashes completely by the time it gets to 540 items.
I am aware of the ability to batch these indexes, and I can see the code presented by Apple on their site Apple - Index App Content - Using Advanced Features. However, I'm not sure exactly how to implement this.
Could someone add some code or point me in the right direction to accomplishing this?
Update #1 (2016/06/21)
The items I'm trying to index are about 2000+ names, with phone numbers, emails, title, and department information for my company. I have a file built in but I also download a file periodically to get up-to-date info. I save the data as a plist, not into CoreData. Once the file downloads I initiate the index, by first deleting everything currently indexed and then adding all the items. From the server I cannot determine if data has changed.
My goal is to index about 200-400 items at a time until all items have been indexed. Below is how I'm currently indexing without batching.
- (void)setupCoreSpotlightSearchFor:(NSString *)fileName {
if ([fileName isEqual:kPlistFileNameEmployee]) {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSURL *downloadFileUrl = kDirectoryEmployeeListDownload;
if ([fileManager fileExistsAtPath:[downloadFileUrl path]]) {
NSArray *dataArray = nil;
NSError *error = nil;
dataArray = [NSArray arrayPropertyListWithURL:downloadFileUrl error:&error];
if (!error && dataArray) {
NSMutableArray *items = nil;
int counter = 0;
for (NSDictionary *person in dataArray) {
NSNumberFormatter *f = [[NSNumberFormatter alloc] init];
f.numberStyle = NSNumberFormatterDecimalStyle;
NSNumber *idNum = [f numberFromString:[[person objectForKey:@"Id"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]];
NSString *firstName = [[person objectForKey:@"FirstName"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *lastName = [[person objectForKey:@"LastName"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *email = [[person objectForKey:@"Email"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *phone = [[person objectForKey:@"Extension"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *title = [[person objectForKey:@"Title"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *organization = [[person objectForKey:@"Organization"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *department = [[person objectForKey:@"Department"] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
CSSearchableItemAttributeSet *attributeSet = [[CSSearchableItemAttributeSet alloc] initWithItemContentType:(NSString *)kCIAttributeTypeImage];
Person *person = [Person createPersonWithId:idNum
FirstName:[NSString stringOrNil:firstName]
LastName:[NSString stringOrNil:lastName]
Email:[NSString stringOrNil:email]
PhoneNumber:[NSString stringOrNil:phone]
Title:[NSString stringOrNil:title]
Organization:[NSString stringOrNil:organization]
Department:[NSString stringOrNil:department]
];
if ([NSString stringOrNil:[person fullName]] != nil) {
[attributeSet setTitle:[person fullName]];
[attributeSet setContentDescription:[person title]];
NSMutableArray *keywords = [[NSMutableArray alloc] init];
if ([NSString stringOrNil:[person firstName]] != nil) {
[keywords addObject:[person firstName]];
}
if ([NSString stringOrNil:[person lastName]] != nil) {
[keywords addObject:[person lastName]];
}
if ([NSString stringOrNil:[person title]] != nil) {
[keywords addObject:[person title]];
}
if ([NSString stringOrNil:[person department]] != nil) {
[keywords addObject:[person department]];
}
if ([NSString stringOrNil:[person phoneNumber]] != nil) {
[keywords addObject:[person phoneNumber]];
}
if ([NSString stringOrNil:[person email]] != nil) {
[keywords addObject:[person email]];
}
[attributeSet setKeywords:keywords];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 180, 180)];
[imageView setImageWithString:[person initialsWithCapitalization:InitialsCapitalizationTypeBoth andLastNameFirst:NO] color:[UIColor colorWithRed:0.77 green:0.07 blue:0.19 alpha:1.0] circular:YES];
[attributeSet setThumbnailData:UIImagePNGRepresentation([imageView image])];
if ([NSString stringOrNil:[person phoneNumber]] != nil) {
[attributeSet setSupportsPhoneCall:[NSNumber numberWithInt:1]];
[attributeSet setPhoneNumbers:@[[person phoneNumber]]];
}
if ([NSString stringOrNil:[person email]] != nil) {
[attributeSet setEmailAddresses:@[[person email]]];
}
CSSearchableItem *item = [[CSSearchableItem alloc] initWithUniqueIdentifier:[NSString stringWithFormat:@"%@", [person id]] domainIdentifier:@"com.myapp.index.employee" attributeSet:attributeSet];
if (item) {
if (!items) {
items = [[NSMutableArray alloc] init];
}
[items addObject:item];
counter++;
}
}
}
if (items) {
// delete current items
[[CSSearchableIndex defaultSearchableIndex] deleteAllSearchableItemsWithCompletionHandler:^(NSError * _Nullable error) {
if (error) {
DLog(@"%@",error);
} else {
DLog(@"Deleted Index!");
// add new items
[[CSSearchableIndex defaultSearchableIndex] indexSearchableItems:items completionHandler:^(NSError * _Nullable error) {
if (error) {
DLog(@"%@",error);
} else {
DLog(@"Added Index!");
}
}];
}
}];
}
}
}
}
}
Thanks!
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