问题
I have a map view in one class with all of my annotations with titles and subtitles. There is a nav bar button that shows a list of all of those titles and subtitles. I'm wanting to be able to select a row in the table view and have it open the annotation with the same title in the map view. Any help?
The only problem I have now is getting the annotation to show when the map view opens. I know I need to use selectAnnotation: animated: but I'm having trouble figuring out how to tell it to open the annotation with the matching title.
In RSFM (class with map view named worldView) I show the table view like this:
- (void)showList
{
List *list = [[List alloc] initWithNibName:nil bundle:nil];
list.annotations = [[NSArray alloc]initWithArray:worldView.annotations];
list.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController pushViewController:list animated:YES];
}
Here is what I have so far in my didSelectRowAtIndexPath method in my table view:
- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
RSFM *rsfm = [[RSFM alloc] initWithNibName:nil bundle:nil];
NSLog(@"List Annotations Array Count: %d", [annotations count]);
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
NSString *cellTitle = selectedCell.textLabel.text;
NSLog(@"Cell Title: %@", cellTitle);
for (NSUInteger i = 0; i < [annotations count]; i++)
{
NSString *stringFromArray = [[annotations objectAtIndex:i]title];
NSLog(@"Annotations string: %@", stringFromArray);
if ([cellTitle isEqualToString:stringFromArray])
{
RSFM *rsfm = [[RSFM alloc] initWithNibName:nil bundle:nil];
rsfm.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController pushViewController:rsfm animated:YES];
// [rsfm.worldView selectAnnotation:<#(id<MKAnnotation>)#> animated:YES];
}
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
回答1:
When you select a row in the tableView, your method tableView:didSelectRowAtIndexPath: is called. So you have to use there the indexPath to read the data from your model, and get the title.
You could then read all annotations from your mapView, using its annotations property. In the array that you get, scan the objects until you find the annotation which has the same title. Then you can send your mapView the message selectAnnotation:animated:, and it will be shown.
Please be aware that there are more clever approaches to this problem, but for a first try it should work.
回答2:
I resolved the issue but actually ended up deciding to show a detail view of the selected item from the table view instead of showing that annotation on the map.
- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"List Annotations Array Count: %d", [annotations count]);
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
NSString *cellTitle = selectedCell.textLabel.text;
NSString *cellSubtitle = selectedCell.detailTextLabel.text;
for (NSUInteger i = 0; i < [annotations count]; i++)
{
NSString *stringFromArray = [[annotations objectAtIndex:i]title];
if ([cellTitle isEqualToString:stringFromArray])
{
id<MKAnnotation> ann = [annotations objectAtIndex:i];
AnnotationDetailView *detail = [[AnnotationDetailView alloc]init];
NSLog(@"Cell Title: %@", cellTitle);
NSLog(@"Cell Title: %@", cellSubtitle);
detail.latText = [NSString localizedStringWithFormat:@"%f",ann.coordinate.latitude];
detail.longText = [NSString localizedStringWithFormat:@"%f", ann.coordinate.longitude];
detail.annTitle = cellTitle;
detail.annSub = cellSubtitle;
detail.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController pushViewController:detail animated:YES];
}
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
回答3:
I can't add this to my original post because then it's too long so I'm posting it here.
And here is my table view:
#import "List.h"
#import "RSFM.h"
#import "DTCustomColoredAccessory.h"
@interface List ()
@end
@implementation List
{
NSMutableArray *title;
NSMutableArray *subtitle;
NSMutableArray *displayItems;
NSMutableDictionary *marketDictionary;
NSMutableArray *farmMarkets;
NSArray *keys;
NSMutableArray *objects;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
title = [[NSMutableArray alloc]initWithObjects:@"Cates Farm", @"Broadbent B & B Foods", @"Cayce's Pumpkin Patch", @"Metcalfe Landscaping", @"Brumfield Farm Market", @"Dogwood Valley Farm", @"Country Fresh Meats & Farmers Market", @"Jim David Meats", @"Trunnell's Farm Market", @"Lovell's Orchard & Farm Market", @"Zook's Produce", @"The Country Barn", @"Poore's Nursery & Farms", @"Just Piddlin Farm", @"Chaney's Dairy Barn & Restaurant", @"Jackson's Orchard & Nursery, Inc.", @"Mammoth Cave Transplants", @"Habegger's Amish Market", @"Kenny's Farmhouse Cheese", @"Dennison's Roadside Market", @"Roberts Family Farm", @"Wooden Farm", @"Lee's Garden Center, Florist & Gift Shop", @"Hinton's Orchard & Farm Market", @"Serenity Farm Alpacas", @"Burton's Nursery & Garden Center", @"Davis Family Farms", @"Heavenly Haven Farm", @"French Valley Farms", @"Cravens Greenhouse", @"Haney's Appledale Farm", @"Hettmansperger's Greenhouse", @"D & F Farms", @"Double Hart Farm", @"Owens Garden Center", @"Hail's Farm", @"Sinking Valley Vineyard & Winery, Inc.", @"Todd's Greenhouse & Florist, LLC", @"McQuerry's Family Farm-Herbs-N-Heirlooms", @"Berea College Farm & Gardens", @"Acres of Land Winery & Restaurant", @"Baldwin Farms", @"Wonder of Life Farm", @"Chateau du Vieux Corbeau Winery/Old Crow Farm Winery", @"Devine's Farm & Corn Maze", @"Williams Country Market", @"Serano Alpacas & Yarns", @"St. Catharine Farm", @"Capture Your Heart Alpacas", @"Ridgeview Greenhouse & Nursery", @"Country Corner Greenhouse & Nursery, Inc", @"Sunny Acres Farm", @"Morrison's Greenhouses", @"George Gagel Farm Market, LLC", @"Thieneman's Herbs & Perennials", @"Tower View Farm & Nursery", @"Gallrein Farms", @"Sweet Home Spun in the Low Dutch Meetinghouse", @"Mulberry Orchard, LLC", @"Gregory Farms", @"Sherwood Acres Beef", @"Bray Orchard & Roadside Market", @"Callis Orchards", @"Bray Fruit", @"Wilson's Nursery", @"Triple J Farm", @"Ayres Family Orchard", @"Michels Family Farm", @"Amerson Farm", @"Bi-Water Farm & Greenhouse", @"Alpine Hills Dairy Tour/Country Pumpkins", @"Blue Ribbon Market", @"Eagle Bend Alpacas Fiber & Gift Shoppe", @"Redman's Farm",@"The Greenhouse in Gertrude", @"Croppers Greenhouse & Nursery", @"McLean's Aerofresh Fruit", @"Julie's Pumpkins", @"Reed Valley Orchard", @"Evans Orchard & Cider Mill", @"Antioch Daylily Garden", @"Golden Apple Fruit Market", @"Boyd Orchards", @"Serenity Hill Fiber & Living History Farm", @"Beech Springs Farm Market", @"Yuletide Tree Farm & Nursery", @"Townsend's Sorghum Mill and Farm Market", @"Bramble Ridge Orchard", @"Country Garden Greenhouse", @"Golden Apple Fruit Market", @"Black Barn Produce, LLC", @"Imel's Greenhouse", @"Feathered Wing Farm Market", @"Hutton-Loyd Tree Farm", @"Halcomb's Knob, LLC", @"Happy Hollow Farms", @"Reid's Orchard", @"McKinney Farm", @"Crawford Farms", @"Brian T. Guffey Livestock & Produce", @"MeadowBrook Orchards & Farm", @"Rising Sons Home Farm Winery", @"VanMeter Family Farm", nil];
subtitle = [[NSMutableArray alloc]initWithObjects:@"Hwy 425 Henderson, KY 42420", @"257 Mary Blue Road Kuttawa, KY 42055", @"153 Farmersville Road Princeton, KY 42445", @"410 Princeton Road Madisonville, KY 42431", @"3320 Nebo Road Madisonville, KY 42431", @"4551 State Route 109N Clay, KY 42404", @"9355 US Hwy 60 W Sturgis, KY 42459",@"350 T. Frank Wathen Rd. Uniontown, KY 42461", @"9255 Hwy 431 Utica, KY 42376", @"22850 Coal Creek Road Hopkinsville, KY 42240", @"Intersection of KY107 & KY117 Herndon, KY 42240", @"112 Britmart Road Elkton, KY 42220", @"5486 Morgantown Road Russellville, KY 42276", @"10830 S. Morgantown Rd. Woodburn, KY 42170", @"9191 Nashville Road, Bowling Green, KY 42101", @"1280 Slim Island Road Bowling Green, KY 42101", @"5394 Brownsville Road Brownsville, KY 42210", @"945 Perrytown Road Scottsville, KY 42164", @"2033 Thomerson Park Road Austin, KY 42123", @"5824 S. Jackson Hwy. Horse Cave, KY 42749", @"125 Kennedy Road Guston, KY 40142", @"1869 Wooden Lane Elizabethtown, KY 42701", @"1918 Bardstown Road Hodgenville, KY 42748", @"8631 Campbellsville Road Hodgenville, KY 42748", @"1380 Frogg Lane Raywick, KY 40060", @"2212 Saloma Road Campbellsville, KY 42718", @"313 Hwy 1464 Greensburg, KY 42743", @"230 Heavenly Lane Columbia, KY 42728", @"1842 N. Main St. Jamestown, KY 42629", @"500 Cedar Hill Road Albany, KY 42602", @"8350 West 80 Nancy, KY 42544-8756", @"3917 N. Hwy 837 Science Hill, KY 42553", @"755 Elihu Rush Branch Road Somerset, KY 42501", @"6550 Cumberland Falls Road Corbin, KY 40701", @"735 Latham Road Somerset, KY 42503", @"Hwy 461, at 3 mile marker Somerset, KY 42503", @"1300 Plato-Vanhook Road Somerset, KY 42503", @"35 Skyline Drive Eubank, KY 42567", @"169 Pine Hill Road Paint Lick, KY 40461", @"230 N. Main St. Berea, KY 40404", @"2285 Barnes Mill Road Richmond, KY 40475", @"1113 Tates Creek Road Richmond, KY 40475", @"686 Buckeye Road Lancaster, KY 40444", @"471 Stanford Avenue Danville, KY 40422-1927", @"623 Talmage-Mayo Road Harrodsburg, KY 40330", @"4189 Craintown Rd. Gravel Switch, KY 40328", @"1805 Booker Road Springfield, KY 40069", @"2645 Bardstown Road Springfield, KY 40061", @"9430 Bloomfield Road Bloomfield, KY 40008", @"460 Buffalo Run Road Shepherdsville, KY 40165", @"4877 Hwy 44E Shepherdsville, KY 40165", @"6516 Echo Trail Jeffersontown, KY 40299", @"5613 Cooper Chapel Road Louisville, KY 40229", @"2400 Lower Hunters Trace Louisville, KY 40216", @"9120 Blowing Tree Road Louisville, KY 40220", @"12523 Taylorsville Road Jeffersontown, KY 40299", @"1029 Vigo Road Shelbyville, KY 40065", @"6805 Castle Hwy. Pleasureville, KY 40057", @"1330 Mulberry Pike Shelbyville, KY 40065", @"985 Vance Road Turners Station, KY 40075", @"215 Parker Drive LaGrange, KY 40031", @"2580 Hwy 42 W. Bedford, KY 40006", @"3721 Hwy 421 N Bedford, KY 40006", @"1660 Highway 421 N Bedford, KY 40006", @"3690 East-West Connector (Rte 676) Frankfort, KY 40601", @"2287 Long Lick Road Georgetown, KY 40324", @"525 Wilson Lane Owenton, KY 40359", @"4275 Hwy 1316 Sparta, KY 41086", @"130 McClelland Circle Georgetown, KY 40324", @"877 Cincinnati Road Georgetown, KY 40324", @"2165 Sherman Mount Zion Rd. Dry Ridge, KY 41035", @"8707 Camp Ernst Road Union, KY 41091", @"7812 East Bend Road Burlington, KY 41005", @"12449 Decoursey Pike Morning View, KY 41063", @"3246 Augusta-Berlin Road Brooksville, KY 41004", @"5350 Raymond Road May's Lick, KY 41055", @"4085 Ewing Road Ewing, KY 41039", @"1069 Ruddles Mill Road Paris, KY 40361", @"239 Lail Lane Paris, KY 40361", @"180 Stone Road Georgetown, KY 40324", @"2231 Houston Antioch Road Lexington, KY 40516", @"1801 Alexandria Drive Lexington, KY 40504", @"1396 Pinckard Pike Versailles, KY 40383", @"1371 Beverly Lane Nicholasville, KY 40356", @"4776 Old Boonesboro Road Winchester, KY 40391", @"3925 Old Boonesboro Road Winchester, KY 40391", @"11620 Main Street Jeffersonville, KY 40337", @"2726 Osborne Road Mt. Sterling, KY 40353", @"99 Union Road Beattyville, KY 41311", @"1523 Hwy 119 North Whitesburg, KY 41815", @"52 KY Route 3224 River, KY 41254", @"2836 State Route 1 Greenup, KY 41144", @"45 Katherine Lane Greenup, KY 41144", @"1483 Big Run Road Wallingford, KY 41093", @"430 Wallacetown Road Paint Lick, KY 40461", @"9730 KY 136W Calhoun, KY 42327", @"4818 Hwy 144 Owensboro, KY 42303", @"88 Noe Lane Russellville, KY 42276", @"59 Williams Cemetery Rd. Hodgenville, KY 42748", @"1114 KY Hwy 829 Albany, KY 42602", @"680 Dug Hill Rd. Elk Horn, KY 42733", @"975 Frankfort Rd. Lawrenceburg, KY 40342", @"164 Old Peonia Loop Clarkson, KY 42726", nil];
// searchBar.showsCancelButton = YES;
searchBar.placeholder = @"Search for name or address";
farmMarkets = [[NSMutableArray alloc]init];
for (NSUInteger i = 0; i < [title count]; i++)
{
[farmMarkets addObject: @{@"title" : [title objectAtIndex:i], @"subtitle" : [subtitle objectAtIndex:i]}];
}
displayItems = [[NSMutableArray alloc]initWithArray:farmMarkets];
// [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardShown:) name:UIKeyboardDidShowNotification object:nil];
// [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardHidden:) name:UIKeyboardWillHideNotification object:nil];
}
/*
- (void)keyboardShown:(NSNotification *)note
{
CGRect keyboardFrame;
[[[note userInfo]objectForKey:UIKeyboardFrameEndUserInfoKey]getValue:&keyboardFrame];
CGRect tableViewFrame = tableView.frame;
tableViewFrame.size.height -= keyboardFrame.size.height;
[tableView setFrame:tableViewFrame];
}
- (void)keyboardHidden:(NSNotification *)note
{
[tableView setFrame:self.view.bounds];
}
*/
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// return [title count];
return [displayItems count];
}
- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// static NSString *mbTableIdentifier = @"SimpleTableItem";
static NSString *marketListIdentifier = @"SimpleTableItem";
UIImageView *image = [[UIImageView alloc]init];
image.image = [UIImage imageNamed:@"CellImage.png"];
// UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:mbTableIdentifier];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:marketListIdentifier];
if (cell == nil)
{
// cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:mbTableIdentifier];
// cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:marketListIdentifier];
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:marketListIdentifier];
// cell.textLabel.font=[UIFont systemFontOfSize:16.0];
}
// cell.backgroundView = [[CustomCellBackground alloc] init];
// cell.selectedBackgroundView = [[CustomCellBackground alloc] init];
cell.textLabel.font = [UIFont fontWithName:@"FranklinGothicStd-ExtraCond" size:20.0];
cell.textLabel.backgroundColor = [UIColor clearColor];
cell.textLabel.highlightedTextColor = [UIColor darkGrayColor];
cell.textLabel.textColor = [UIColor whiteColor];
cell.detailTextLabel.font = [UIFont fontWithName:@"FranklinGothicStd-ExtraCond" size:14.0];
cell.detailTextLabel.backgroundColor = [UIColor clearColor];
cell.detailTextLabel.highlightedTextColor = [UIColor darkGrayColor];
cell.detailTextLabel.textColor = [UIColor whiteColor];
cell.backgroundView = image;
// NSLog(@"cell separator style: %d separator color: %@", tableView.separatorStyle, tableView.separatorColor);
cell.textLabel.text = [[displayItems objectAtIndex:indexPath.row]objectForKey:@"title"];
cell.detailTextLabel.text = [[displayItems objectAtIndex:indexPath.row]objectForKey:@"subtitle"];
DTCustomColoredAccessory *accessory = [DTCustomColoredAccessory accessoryWithColor:cell.textLabel.textColor];
accessory.highlightedColor = [UIColor darkGrayColor];
cell.accessoryView =accessory;
return cell;
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)aSearchBar
{
searchBar.showsCancelButton = YES;
}
- (void)searchBarTextDidEndEditing:(UISearchBar *)aSearchBar
{
searchBar.showsCancelButton = NO;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if ([searchText length] == 0)
{
[displayItems removeAllObjects];
[displayItems addObjectsFromArray:title];
}
else
{
[displayItems removeAllObjects];
for (NSString *string in title)
{
NSRange r = [string rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (r.location != NSNotFound)
{
[displayItems addObject:string];
}
}
}
[tableView reloadData];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)aSearchBar
{
[searchBar resignFirstResponder];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)aSearchBar
{
[searchBar resignFirstResponder];
}
- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
来源：https://stackoverflow.com/questions/17214295/open-map-annotation-from-selected-row-in-table-view