1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/*
File: MyCLController.m
Abstract: Singleton class used to talk to CoreLocation and send results back to
the app's view controllers.
Version: 1.1
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under
Apple's copyrights in this original Apple software (the "Apple Software"), to
use, reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions
of the Apple Software.
Neither the name, trademarks, service marks or logos of Apple Inc. may be used
to endorse or promote products derived from the Apple Software without specific
prior written permission from Apple. Except as expressly stated in this notice,
no other rights or licenses, express or implied, are granted by Apple herein,
including but not limited to any patent rights that may be infringed by your
derivative works or by other works in which the Apple Software may be
incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR
DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF
CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Copyright (C) 2008 Apple Inc. All Rights Reserved.
*/
#import "MyCLController.h"
// This is a singleton class, see below
static MyCLController *sharedCLDelegate = nil;
@implementation MyCLController
@synthesize delegate, locationManager, updating;
- (id) init {
self = [super init];
if (self != nil) {
self.locationManager = [[[CLLocationManager alloc] init] autorelease];
self.locationManager.delegate = self; // Tells the location manager to send updates to this object
}
return self;
}
-(void)startUpdatingLocation {
self.updating = YES;
[self.locationManager startUpdatingLocation];
}
-(void)stopUpdatingLocation {
self.updating = NO;
[self.locationManager stopUpdatingLocation];
}
// Called when the location is updated
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
// Negative accuracy means an invalid or unavailable measurement
if (signbit(newLocation.horizontalAccuracy)) {
return;
}
// If location timestamp was ages ago, it's a cached one; ignore it
NSTimeInterval howRecent = [newLocation.timestamp timeIntervalSinceNow];
if (abs(howRecent) > 5.0) {
return;
}
[self.delegate newLocationUpdate:newLocation];
}
// Called when there is an error getting the location
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error
{
NSMutableString *errorString = [[[NSMutableString alloc] init] autorelease];
if ([error domain] == kCLErrorDomain) {
// We handle CoreLocation-related errors here
switch ([error code]) {
// This error code is usually returned whenever user taps "Don't Allow" in response to
// being told your app wants to access the current location. Once this happens, you cannot
// attempt to get the location again until the app has quit and relaunched.
//
// "Don't Allow" on two successive app launches is the same as saying "never allow". The user
// can reset this for all apps by going to Settings > General > Reset > Reset Location Warnings.
//
case kCLErrorDenied:
[self stopUpdatingLocation];
[self.delegate newLocationError:@"FixMyStreet needs your location to know where your problem is."];
break;
// This error code is usually returned whenever the device has no data or WiFi connectivity,
// or when the location cannot be determined for some other reason.
//
// CoreLocation will keep trying, so you can keep waiting, or prompt the user.
//
case kCLErrorLocationUnknown:
[errorString appendFormat:@"%@\n", NSLocalizedString(@"LocationUnknown", nil)];
break;
// We shouldn't ever get an unknown error code, but just in case...
//
default:
[errorString appendFormat:@"%@ %d\n", NSLocalizedString(@"GenericLocationError", nil), [error code]];
break;
}
} else {
// We handle all non-CoreLocation errors here
// (we depend on localizedDescription for localization)
[errorString appendFormat:@"Error domain: \"%@\" Error code: %d\n", [error domain], [error code]];
[errorString appendFormat:@"Description: \"%@\"\n", [error localizedDescription]];
}
self.updating = NO;
// Send the update to our delegate
// [self.delegate newLocationUpdate:errorString];
}
#pragma mark ---- singleton object methods ----
// See "Creating a Singleton Instance" in the Cocoa Fundamentals Guide for more info
+ (MyCLController *)sharedInstance {
@synchronized(self) {
if (sharedCLDelegate == nil) {
[[self alloc] init]; // assignment not done here
}
}
return sharedCLDelegate;
}
+ (id)allocWithZone:(NSZone *)zone {
@synchronized(self) {
if (sharedCLDelegate == nil) {
sharedCLDelegate = [super allocWithZone:zone];
return sharedCLDelegate; // assignment and return on first allocation
}
}
return nil; // on subsequent allocation attempts return nil
}
- (id)copyWithZone:(NSZone *)zone
{
return self;
}
- (id)retain {
return self;
}
- (unsigned)retainCount {
return UINT_MAX; // denotes an object that cannot be released
}
- (void)release {
//do nothing
}
- (id)autorelease {
return self;
}
@end
|
