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Auto pick option #7

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d88cecf
Allow for a CMMapAppUserPick option which will auto discover availabl…
BadPirate Jul 25, 2015
ffcec0e
Issue: iOS 9 always returns "no" for canOpenURL, this will prevent m…
BadPirate Oct 17, 2015
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1 change: 1 addition & 0 deletions CMMapLauncher/CMMapLauncher.h
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@ typedef NS_ENUM(NSUInteger, CMMapApp) {
CMMapAppTheTransitApp, // The Transit App
CMMapAppWaze, // Waze
CMMapAppYandex, // Yandex Navigator
CMMapAppUserPick // User can pick from a list of available applications. Needs to be last enum option.
};

@interface CMMapLauncher : NSObject
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129 changes: 121 additions & 8 deletions CMMapLauncher/CMMapLauncher.m
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Original file line number Diff line number Diff line change
Expand Up @@ -22,16 +22,39 @@

#import "CMMapLauncher.h"

@interface CMMapLauncher ()
@interface CMMapLauncher () <UIAlertViewDelegate>

+ (NSString *)urlPrefixForMapApp:(CMMapApp)mapApp;
+ (NSString *)urlEncode:(NSString *)queryParam;
+ (NSString *)googleMapsStringForMapPoint:(CMMapPoint *)mapPoint;

@property (nonatomic, strong) CMMapPoint *start, *end;
@end

@implementation CMMapLauncher

+ (CMMapLauncher *)alertViewWatcherFor:(CMMapPoint *)start to:(CMMapPoint *)end
{
static CMMapLauncher *sAlertViewWatcher = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sAlertViewWatcher = [[CMMapLauncher alloc] init];
});
sAlertViewWatcher.start = start;
sAlertViewWatcher.end = end;
return sAlertViewWatcher;
}

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if(buttonIndex == alertView.cancelButtonIndex) return;
NSString *name = [alertView buttonTitleAtIndex:buttonIndex];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
CMMapApp app = [CMMapLauncher mapAppForName:name];
[defaults setObject:@(app) forKey:@"CMMapAppUserPick"];
[defaults synchronize];
[CMMapLauncher launchMapApp:app forDirectionsFrom:self.start to:self.end];
}

+ (NSString *)urlPrefixForMapApp:(CMMapApp)mapApp {
switch (mapApp) {
case CMMapAppCitymapper:
Expand All @@ -57,6 +80,39 @@ + (NSString *)urlPrefixForMapApp:(CMMapApp)mapApp {
}
}

// Nicer ways to do this in swift :)
+ (NSString *)nameForMapApp:(CMMapApp)mapApp {
switch (mapApp) {
case CMMapAppCitymapper:
return @"City Mapper";
case CMMapAppGoogleMaps:
return @"Google Maps";
case CMMapAppAppleMaps:
return @"Apple Maps";
case CMMapAppUserPick:
return nil;
case CMMapAppNavigon:
return @"Navigon";
case CMMapAppTheTransitApp:
return @"The Transit App";
case CMMapAppWaze:
return @"Waze";
case CMMapAppYandex:
return @"Yandex";
}
}

+ (CMMapApp)mapAppForName:(NSString *)name {
if([name isEqualToString:@"City Mapper"]) return CMMapAppCitymapper;
if([name isEqualToString:@"Google Maps"]) return CMMapAppGoogleMaps;
if([name isEqualToString:@"Apple Maps"]) return CMMapAppAppleMaps;
if([name isEqualToString:@"Navigon"]) return CMMapAppNavigon;
if([name isEqualToString:@"The Transit App"]) return CMMapAppTheTransitApp;
if([name isEqualToString:@"Waze"]) return CMMapAppWaze;
if([name isEqualToString:@"Yandex"]) return CMMapAppYandex;
return CMMapAppUserPick;
}

+ (NSString *)urlEncode:(NSString *)queryParam {
// Encode all the reserved characters, per RFC 3986
// (<http://www.ietf.org/rfc/rfc3986.txt>)
Expand Down Expand Up @@ -86,7 +142,15 @@ + (NSString *)googleMapsStringForMapPoint:(CMMapPoint *)mapPoint {
}

+ (BOOL)isMapAppInstalled:(CMMapApp)mapApp {
if (mapApp == CMMapAppAppleMaps) {
BOOL canOpenDeprecated = ([[[UIDevice currentDevice] systemVersion] compare:@"9.0" options:NSNumericSearch] != NSOrderedAscending);

if(canOpenDeprecated)
{
// iOS 9.0 deprecated canOpenURL, so we have no way to guess. This means we just have to assume yes.
return YES;
}

if (mapApp == CMMapAppAppleMaps || mapApp == CMMapAppUserPick) {
return YES;
}

Expand All @@ -102,13 +166,50 @@ + (BOOL)launchMapApp:(CMMapApp)mapApp forDirectionsTo:(CMMapPoint *)end {
return [CMMapLauncher launchMapApp:mapApp forDirectionsFrom:[CMMapPoint currentLocation] to:end];
}

+ (void)clearDefaultMapApp {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if([defaults objectForKey:@"CMMapAppUserPick"]) {
[defaults removeObjectForKey:@"CMMapAppUserPick"];
[defaults synchronize];
}
}

+ (BOOL)launchMapApp:(CMMapApp)mapApp
forDirectionsFrom:(CMMapPoint *)start
to:(CMMapPoint *)end {
if (![CMMapLauncher isMapAppInstalled:mapApp]) {
[self clearDefaultMapApp];
return NO;
}

if (mapApp == CMMapAppUserPick) {
NSNumber *userPick = [[NSUserDefaults standardUserDefaults] objectForKey:@"CMMapAppUserPick"];
if([userPick isKindOfClass:[NSNumber class]]) {
mapApp = userPick.integerValue;
}
else
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Open with:"
message:nil
delegate:[self alertViewWatcherFor:start to:end]
cancelButtonTitle:nil
otherButtonTitles:nil];
for (NSUInteger x = 0; x < CMMapAppUserPick; x++) {
if([self isMapAppInstalled:x]) {
[alertView addButtonWithTitle:[self nameForMapApp:x]];
mapApp = x;
}
}
if(alertView.numberOfButtons > 1) {
// There is a choice.
[alertView addButtonWithTitle:@"Cancel"];
alertView.cancelButtonIndex = alertView.numberOfButtons-1;
[alertView show];
return YES;
}
}
}

if (mapApp == CMMapAppAppleMaps) {
// Check for iOS 6
Class mapItemClass = [MKMapItem class];
Expand All @@ -127,7 +228,9 @@ + (BOOL)launchMapApp:(CMMapApp)mapApp
[CMMapLauncher googleMapsStringForMapPoint:start],
[CMMapLauncher googleMapsStringForMapPoint:end]
];
return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
BOOL success = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
if(!success) [self clearDefaultMapApp];
return success;
} else if (mapApp == CMMapAppCitymapper) {
NSMutableArray *params = [NSMutableArray arrayWithCapacity:10];
if (start && !start.isCurrentLocation) {
Expand All @@ -149,7 +252,9 @@ + (BOOL)launchMapApp:(CMMapApp)mapApp
}
}
NSString *url = [NSString stringWithFormat:@"citymapper://directions?%@", [params componentsJoinedByString:@"&"]];
return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
BOOL success = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
if(!success) [self clearDefaultMapApp];
return success;
} else if (mapApp == CMMapAppTheTransitApp) {
// http://thetransitapp.com/developers

Expand All @@ -161,7 +266,9 @@ + (BOOL)launchMapApp:(CMMapApp)mapApp
[params addObject:[NSString stringWithFormat:@"to=%f,%f", end.coordinate.latitude, end.coordinate.longitude]];
}
NSString *url = [NSString stringWithFormat:@"transit://directions?%@", [params componentsJoinedByString:@"&"]];
return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
BOOL success = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
if(!success) [self clearDefaultMapApp];
return success;
} else if (mapApp == CMMapAppNavigon) {
// http://www.navigon.com/portal/common/faq/files/NAVIGON_AppInteract.pdf

Expand All @@ -170,18 +277,24 @@ + (BOOL)launchMapApp:(CMMapApp)mapApp
name = end.name;
}
NSString *url = [NSString stringWithFormat:@"navigon://coordinate/%@/%f/%f", [CMMapLauncher urlEncode:name], end.coordinate.longitude, end.coordinate.latitude];
return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
BOOL success = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
if(!success) [self clearDefaultMapApp];
return success;
} else if (mapApp == CMMapAppWaze) {
NSString *url = [NSString stringWithFormat:@"waze://?ll=%f,%f&navigate=yes", end.coordinate.latitude, end.coordinate.longitude];
return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
BOOL success = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
if(!success) [self clearDefaultMapApp];
return success;
} else if (mapApp == CMMapAppYandex) {
NSString *url = nil;
if (start.isCurrentLocation) {
url = [NSString stringWithFormat:@"yandexnavi://build_route_on_map?lat_to=%f&lon_to=%f", end.coordinate.latitude, end.coordinate.longitude];
} else {
url = [NSString stringWithFormat:@"yandexnavi://build_route_on_map?lat_to=%f&lon_to=%f&lat_from=%f&lon_from=%f", end.coordinate.latitude, end.coordinate.longitude, start.coordinate.latitude, start.coordinate.longitude];
}
return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
BOOL success = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
if(!success) [self clearDefaultMapApp];
return success;
}

return NO;
Expand Down