Merge pull request #13 from LastFriday/master

iOS LocationPlugin rewritten in Objective-C instead of Swift

ios/Classes/LocationPlugin.m

@@ -1,8 +1,83 @@
 #import "LocationPlugin.h"
-#import <location/location-Swift.h>
+
+@import CoreLocation;
+
+@interface LocationPlugin() <FlutterStreamHandler, CLLocationManagerDelegate>
+@property (strong, nonatomic) CLLocationManager *clLocationManager;
+@property (copy, nonatomic)   FlutterResult      flutterResult;
+@property (copy, nonatomic)   FlutterEventSink   flutterEventSink;
+@property (assign, nonatomic) BOOL               flutterListening;
+@end
 
 @implementation LocationPlugin
-+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
-  [SwiftLocationPlugin registerWithRegistrar:registrar];
+
++(void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
+    FlutterMethodChannel *channel = [FlutterMethodChannel methodChannelWithName:@"lyokone/location" binaryMessenger:registrar.messenger];
+    FlutterEventChannel *stream = [FlutterEventChannel eventChannelWithName:@"lyokone/locationstream" binaryMessenger:registrar.messenger];
+
+    LocationPlugin *instance = [[LocationPlugin alloc] init];
+    [registrar addMethodCallDelegate:instance channel:channel];
+    [stream setStreamHandler:instance];
 }
+
+-(instancetype)init {
+    self = [super init];
+    if (self) {
+        self.flutterListening = NO;
+    }
+    return self;
+}
+
+-(void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
+    if ([call.method isEqualToString:@"getLocation"]) {
+        self.flutterResult = result;
+        if ([CLLocationManager locationServicesEnabled]) {
+            self.clLocationManager = [[CLLocationManager alloc] init];
+            self.clLocationManager.delegate = self;
+            if ([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"] != nil) {
+                [self.clLocationManager requestWhenInUseAuthorization];
+            }
+            else if ([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"] != nil) {
+                [self.clLocationManager requestAlwaysAuthorization];
+            }
+            else {
+                [NSException raise:NSInternalInconsistencyException format:@"To use location in iOS8 you need to define either NSLocationWhenInUseUsageDescription or NSLocationAlwaysUsageDescription in the app bundle's Info.plist file"];
+            }
+
+            self.clLocationManager.desiredAccuracy = kCLLocationAccuracyBest;
+            [self.clLocationManager startUpdatingLocation];
+        }
+    }
+    else {
+        result(FlutterMethodNotImplemented);
+    }
+}
+
+-(FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)events {
+    self.flutterEventSink = events;
+    self.flutterListening = YES;
+    return nil;
+}
+
+-(FlutterError*)onCancelWithArguments:(id)arguments {
+    self.flutterListening = NO;
+    return nil;
+}
+
+-(void)locationManager:(CLLocationManager*)manager didUpdateLocations:(NSArray<CLLocation*>*)locations {
+    CLLocation *location = locations.firstObject;
+    NSDictionary<NSString*,NSNumber*>* coordinatesDict = @{
+                                                          @"latitude": @(location.coordinate.latitude),
+                                                          @"longitude": @(location.coordinate.longitude),
+                                                          @"accuracy": @(location.horizontalAccuracy),
+                                                          @"altitude": @(location.altitude),
+                                                          };
+    self.flutterResult(coordinatesDict);
+    if (self.flutterListening) {
+        self.flutterEventSink(coordinatesDict);
+    } else {
+        [self.clLocationManager stopUpdatingLocation];
+    }
+}
+
 @end