/* |
Copyright (C) 2014 Apple Inc. All Rights Reserved. |
See LICENSE.txt for this sample’s licensing information |
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*/ |
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#import "PlacemarkViewController.h" |
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#import <QuartzCore/QuartzCore.h> // for CALayer support |
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@interface PlacemarkViewController () |
{ |
UITableViewCell *_mapCell; |
BOOL _preferCoord; |
} |
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@property (nonatomic, strong) CLPlacemark *placemark; |
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@end |
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#pragma mark - |
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@implementation PlacemarkViewController |
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NSInteger const PlacemarkViewControllerNumberOfSections = 5; |
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- (instancetype)initWithPlacemark:(CLPlacemark *)placemark preferCoord:(BOOL)shouldPreferCoord |
{ |
self = [super initWithStyle:UITableViewStyleGrouped]; |
if (self) { |
_placemark = placemark; |
_preferCoord = shouldPreferCoord; |
} |
return self; |
} |
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- (instancetype)initWithPlacemark:(CLPlacemark *)placemark |
{ |
return [self initWithPlacemark:placemark preferCoord:NO]; |
} |
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- (instancetype)init |
{ |
return [self initWithPlacemark:nil]; |
} |
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- (void)viewDidLoad |
{ |
[super viewDidLoad]; |
self.title = @"CLPlacemark Details"; |
} |
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#pragma mark - UITableViewDataSource |
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- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView |
{ |
return PlacemarkViewControllerNumberOfSections; |
} |
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- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section |
{ |
NSArray *counts; |
if (_preferCoord) |
{ |
counts = @[@1, //map |
@8, //location |
@4, //region |
@10, //dict |
@1]; //map url |
} |
else |
{ |
counts = @[@10, //dict |
@4, //region |
@8, //location |
@1, //map |
@1]; //map url |
} |
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return [counts[section] integerValue]; |
} |
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- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section |
{ |
NSArray *titles; |
if (_preferCoord) |
{ |
titles = @[@"", // map |
@"location - (CLLocation)", // location |
@"region - (CLRegion)", // region |
@"addressDictionary - (NSDictionary)", // dict |
@""]; |
} |
else |
{ |
titles = @[@"addressDictionary - (NSDictionary)", // dict |
@"region - (CLRegion)", // region |
@"location - (CLLocation)", // location |
@"Map", // map |
@""]; |
} |
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return titles[section]; |
} |
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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath |
{ |
NSInteger section = indexPath.section; |
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if (_preferCoord) |
{ |
switch (section) |
{ |
case 0: return [self cellForMapView]; |
case 1: return [self cellForLocationIndex:indexPath.row]; |
case 2: return [self cellForRegionIndex:indexPath.row]; |
case 3: return [self cellForAddressDictionaryIndex:indexPath.row]; |
case 4: return [self cellForMapURL]; |
} |
} |
else |
{ |
switch (section) |
{ |
case 0: return [self cellForAddressDictionaryIndex:indexPath.row]; |
case 1: return [self cellForRegionIndex:indexPath.row]; |
case 2: return [self cellForLocationIndex:indexPath.row]; |
case 3: return [self cellForMapView]; |
case 4: return [self cellForMapURL]; |
} |
} |
return nil; |
} |
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#pragma mark - UITableViewDelegate |
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- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath |
{ |
NSInteger mapSection = _preferCoord ? 0 : 3; |
if (indexPath.section == mapSection) |
{ |
return 240.0f; // map height |
} |
return [self.tableView rowHeight]; |
} |
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- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath |
{ |
// if its the map url cell, open the location in Google maps |
// |
if (indexPath.section == 4) // map url is always last section |
{ |
NSString *ll = [NSString stringWithFormat:@"%f,%f", |
self.placemark.location.coordinate.latitude, |
self.placemark.location.coordinate.longitude]; |
ll = [ll stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; |
NSString *url = [NSString stringWithFormat:@"http://maps.apple.com/?q=%@", ll]; |
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]]; |
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[self.tableView deselectRowAtIndexPath:indexPath animated:NO]; |
} |
} |
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#pragma mark - Cell Generators |
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- (UITableViewCell *)blankCell |
{ |
NSString *cellID = @"Cell"; |
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellID]; |
cell.selectionStyle = UITableViewCellSelectionStyleNone; |
return cell; |
} |
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- (UITableViewCell *)cellForAddressDictionaryIndex:(NSInteger)index |
{ |
NSArray const *keys = @[@"name", |
@"thoroughfare", |
@"subThoroughfare", |
@"locality", |
@"subLocality", |
@"administrativeArea", |
@"subAdministrativeArea", |
@"postalCode", |
@"ISOcountryCode", |
@"country"]; |
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if (index >= (NSInteger)[keys count]) |
index = [keys count] - 1; |
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UITableViewCell *cell = [self blankCell]; |
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// setup |
NSString *key = keys[index]; |
NSString *ivar = [self.placemark performSelector:NSSelectorFromString(key)]; |
NSString *dict = [self.placemark addressDictionary][key]; |
if (dict) |
{ |
// assert that ivar and dict values are the same |
NSAssert(![ivar isEqualToString:dict], @"value from ivar accessor and from addressDictionary should always be the same! %@ != %@", ivar, dict); |
} |
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// set cell attributes |
cell.textLabel.text = key; |
cell.detailTextLabel.text = ivar; |
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return cell; |
} |
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- (UITableViewCell *)cellForLocationIndex:(NSInteger)index |
{ |
NSArray const *keys = @[@"coordinate.latitude", |
@"coordinate.longitude", |
@"altitude", |
@"horizontalAccuracy", |
@"verticalAccuracy", |
@"course", |
@"speed", |
@"timestamp"]; |
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if (index >= (NSInteger)[keys count]) |
index = [keys count] - 1; |
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UITableViewCell *cell = [self blankCell]; |
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// setup |
NSString *key = keys[index]; |
NSString *ivar = @""; |
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// look up the values, special case lat and long and timestamp but first, special case placemark being nil. |
if (self.placemark.location == nil) |
{ |
ivar = @"location is nil."; |
} |
else if ([key isEqualToString:@"coordinate.latitude"]) |
{ |
ivar = [self displayStringForDouble:[self.placemark.location coordinate].latitude]; |
} |
else if ([key isEqualToString:@"coordinate.longitude"]) |
{ |
ivar = [self displayStringForDouble:[self.placemark.location coordinate].longitude]; |
} |
else if ([key isEqualToString:@"timestamp"]) |
{ |
ivar = [NSString stringWithFormat:@"%@", [self.placemark.location performSelector:NSSelectorFromString(key)]]; |
} |
else |
{ |
double var = [self doubleForObject:self.placemark.location andSelector:NSSelectorFromString(key)]; |
ivar = [self displayStringForDouble:var]; |
} |
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// set cell attributes |
cell.textLabel.text = key; |
cell.detailTextLabel.text = ivar; |
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return cell; |
} |
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- (UITableViewCell *)cellForRegionIndex:(NSInteger)index |
{ |
NSArray const *keys = @[@"center.latitude", |
@"center.longitude", |
@"radius", |
@"identifier"]; |
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if (index >= (NSInteger)[keys count]) |
index = [keys count] - 1; |
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UITableViewCell *cell = [self blankCell]; |
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// setup |
NSString *key = keys[index]; |
NSString *ivar; |
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// look up the values, special case lat and long and timestamp but first special case region being nil |
if (self.placemark.region == nil) |
{ |
ivar = @"region is nil."; |
} |
else if ([key isEqualToString:@"center.latitude"]) |
{ |
ivar = [self displayStringForDouble:self.placemark.location.coordinate.latitude]; |
} |
else if ([key isEqualToString:@"center.longitude"]) |
{ |
ivar = [self displayStringForDouble:self.placemark.location.coordinate.longitude]; |
} |
else if ([key isEqualToString:@"identifier"]) |
{ |
ivar = [NSString stringWithFormat:@"%@", [self.placemark.region performSelector:NSSelectorFromString(key)]]; |
} |
else |
{ |
double var = [self doubleForObject:self.placemark.region andSelector:NSSelectorFromString(key)]; |
ivar = [self displayStringForDouble:var]; |
} |
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// set cell attributes |
cell.textLabel.text = key; |
cell.detailTextLabel.text = ivar; |
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return cell; |
} |
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- (UITableViewCell *)cellForMapView |
{ |
if (_mapCell) |
return _mapCell; |
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// if not cached, setup the map view... |
CGFloat cellWidth = self.view.bounds.size.width - 20; |
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) |
{ |
cellWidth = self.view.bounds.size.width - 90; |
} |
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CGRect frame = CGRectMake(0, 0, cellWidth, 240); |
MKMapView *map = [[MKMapView alloc] initWithFrame:frame]; |
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(self.placemark.location.coordinate, 200, 200); |
[map setRegion:region]; |
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map.layer.masksToBounds = YES; |
map.layer.cornerRadius = 10.0; |
map.mapType = MKMapTypeStandard; |
[map setScrollEnabled:NO]; |
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// add a pin using self as the object implementing the MKAnnotation protocol |
[map addAnnotation:self]; |
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NSString * cellID = @"Cell"; |
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellID]; |
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[cell.contentView addSubview:map]; |
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_mapCell = cell; |
return cell; |
} |
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- (UITableViewCell *)cellForMapURL |
{ |
NSString * cellID = @"Cell"; |
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID]; |
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cell.textLabel.text = @"View in Maps"; |
cell.textLabel.textAlignment = NSTextAlignmentCenter; |
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return cell; |
} |
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#pragma mark - Display Utilities |
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// performSelector is only for objects |
- (double)doubleForObject:(id)object andSelector:(SEL)selector |
{ |
NSInvocation *inv = [NSInvocation invocationWithMethodSignature:[object methodSignatureForSelector:selector]]; |
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[inv invoke]; |
double result; |
[inv getReturnValue:&result]; |
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return result; |
} |
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// don't try and print any NaNs. these throw exceptions in strings |
- (NSString *)displayStringForDouble:(double)aDouble |
{ |
if (isnan(aDouble)) |
{ |
return @"N/A"; |
} |
else |
{ |
return [NSString stringWithFormat:@"%f", aDouble]; |
} |
} |
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#pragma mark - MKAnnotation Protocol (for map pin) |
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- (CLLocationCoordinate2D)coordinate |
{ |
return self.placemark.location.coordinate; |
} |
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- (NSString *)title |
{ |
return self.placemark.thoroughfare; |
} |
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@end |
