关于前端:Flutter-混合开发-03-百度地图定位功能-ios-篇

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本节指标

  • 创立 ios flutter 插件流程
  • 集成百度定位性能

视频

https://www.bilibili.com/vide…

<iframe src=”//player.bilibili.com/player.html?bvid=BV1HT4y1L73i&page=1″ scrolling=”no” border=”0″ frameborder=”no” framespacing=”0″ allowfullscreen=”true” width=”100%” height=”400px”> </iframe>

代码

https://github.com/ducafecat/…

百度平台局部

设置 AK

https://lbsyun.baidu.com/apic…

  • 增加利用

  • 查看 Bundle Identifier

IOS 局部

主动部署 CocoaPods

  • 装置工具 
sudo gem install cocoapods
  • ios/flutter_baidu_plugin_ducafecat.podspec
  ...
  s.dependency 'Flutter'
  s.platform = :ios, '8.0'

  s.dependency 'BMKLocationKit'

  # Flutter.framework does not contain a i386 slice. Only x86_64 simulators are supported.
  s.pod_target_xcconfig = {'DEFINES_MODULE' => 'YES', 'VALID_ARCHS[sdk=iphonesimulator*]' => 'x86_64' }
end
  • 装置百度 sdk 包 
pod install
  • 降级 
pod repo update
  • pod search 无奈搜寻到类库的解决办法（找不到类库）
（1）执行 pod setup（2）删除~/Library/Caches/CocoaPods 目录下的 search_index.json 文件

    pod setup 胜利后会生成~/Library/Caches/CocoaPods/search_index.json 文件

    终端输出 rm ~/Library/Caches/CocoaPods/search_index.json

    删除胜利后再执行 pod search（3）执行 pod search

Info.plist 定位受权

example/ios/Runner/Info.plist

<dict>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string> 须要定位 </string>

音讯告诉 BdmapFlutterStreamManager

  • ios/Classes/BdmapFlutterStreamManager.h
//
//  Header.h
//  bdmap_location_flutter_plugin
//
//  Created by Wang,Shengzhan on 2020/2/4.
//


#import <Foundation/Foundation.h>
#import <Flutter/Flutter.h>

NS_ASSUME_NONNULL_BEGIN
@class BdmapFlutterStreamHandler;
@interface BdmapFlutterStreamManager : NSObject
+ (instancetype)sharedInstance ;
@property (nonatomic, strong) BdmapFlutterStreamHandler* streamHandler;

@end

@interface BdmapFlutterStreamHandler : NSObject<FlutterStreamHandler>
@property (nonatomic, strong) FlutterEventSink eventSink;

@end
NS_ASSUME_NONNULL_END
  • ios/Classes/BdmapFlutterStreamManager.m
//
//  BdmapFlutterStreamManager.m
//  bdmap_location_flutter_plugin
//
//  Created by Wang,Shengzhan on 2020/2/4.
//

#import "BdmapFlutterStreamManager.h"

@implementation BdmapFlutterStreamManager

+ (instancetype)sharedInstance {
    static dispatch_once_t onceToken;
    static BdmapFlutterStreamManager *manager = nil;
    dispatch_once(&onceToken, ^{manager = [[BdmapFlutterStreamManager alloc] init];
        BdmapFlutterStreamHandler * streamHandler = [[BdmapFlutterStreamHandler alloc] init];
        manager.streamHandler = streamHandler;
    });

    return manager;
}

@end


@implementation BdmapFlutterStreamHandler

- (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)eventSink {
    self.eventSink = eventSink;
    return nil;
}

- (FlutterError*)onCancelWithArguments:(id)arguments {return nil;}

@end

地图接口业务 FlutterBaiduPluginDucafecatPlugin

  • ios/Classes/FlutterBaiduPluginDucafecatPlugin.h
#import <Flutter/Flutter.h>

@interface FlutterBaiduPluginDucafecatPlugin : NSObject<FlutterPlugin>
@end
  • ios/Classes/FlutterBaiduPluginDucafecatPlugin.m
#import "FlutterBaiduPluginDucafecatPlugin.h"
#import "BMKLocationkit/BMKLocationComponent.h"
#import "BdmapFlutterStreamManager.h"

@interface FlutterBaiduPluginDucafecatPlugin()<BMKLocationManagerDelegate>

@property (nonatomic,strong) BMKLocationManager *locManager;

@property (nonatomic, copy) FlutterResult flutterResult;

@end



@implementation FlutterBaiduPluginDucafecatPlugin
+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
  // FlutterMethodChannel* channel = [FlutterMethodChannel
  //     methodChannelWithName:@"flutter_baidu_plugin_ducafecat"
  //           binaryMessenger:[registrar messenger]];
  // FlutterBaiduPluginDucafecatPlugin* instance = [[FlutterBaiduPluginDucafecatPlugin alloc] init];
  // [registrar addMethodCallDelegate:instance channel:channel];

    FlutterMethodChannel* channel = [FlutterMethodChannel
                                     methodChannelWithName:@"flutter_baidu_plugin_ducafecat"
                                     binaryMessenger:[registrar messenger]];

    FlutterBaiduPluginDucafecatPlugin* instance = [[FlutterBaiduPluginDucafecatPlugin alloc] init];

    [registrar addMethodCallDelegate:instance channel:channel];

    FlutterEventChannel *eventChanel = [FlutterEventChannel eventChannelWithName:@"flutter_baidu_plugin_ducafecat_stream" binaryMessenger:[registrar messenger]];

    [eventChanel setStreamHandler:[[BdmapFlutterStreamManager sharedInstance] streamHandler]];

}

// - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {//   if ([@"getPlatformVersion" isEqualToString:call.method]) {//     result([@"iOS" stringByAppendingString:[[UIDevice currentDevice] systemVersion]]);
//   }
//   else if ([@"duAddOne" isEqualToString:call.method]) {
//       NSInteger val = 100;
//       val += [[call.arguments objectForKey:@"num"] intValue];
//       result([NSNumber numberWithLong:val]);
//   }
//   else {//     result(FlutterMethodNotImplemented);
//   }
// }


- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {if ([@"getPlatformVersion" isEqualToString:call.method]) {result([@"iOS" stringByAppendingString:[[UIDevice currentDevice] systemVersion]]);

    } else if ([@"startLocation" isEqualToString:call.method]){ // 开始定位

//        NSLog((@"\n[bdmap_loc_flutter_plugin:%s]"), "startLocation...");
        [self startLocation:result];

    }else if ([@"stopLocation" isEqualToString:call.method]){ // 进行定位

//        NSLog((@"\n[bdmap_loc_flutter_plugin:%s]"), "stopLocation...");
        [self stopLocation];
        result(@YES);

    } else if ([@"updateOption" isEqualToString:call.method] ) { // 设置定位参数

        result(@([self updateOption:call.arguments]));

    } else if ([@"setApiKey" isEqualToString:call.method]){ // 设置 ios 端 ak
//        NSLog((@"\n[bdmap_loc_flutter_plugin:%s]"), "setApiKey...");
        [[BMKLocationAuth sharedInstance] checkPermisionWithKey:call.arguments authDelegate:self];
        result(@YES);
    } else {result(FlutterMethodNotImplemented);
    }
}

/**
 获取设置的冀望定位精度
 */
-(double)getDesiredAccuracy:(NSString*)str{if([@"kCLLocationAccuracyBest" isEqualToString:str]) {return kCLLocationAccuracyBest;} else if ([@"kCLLocationAccuracyNearestTenMeters" isEqualToString:str]) {return kCLLocationAccuracyNearestTenMeters;} else if ([@"kCLLocationAccuracyHundredMeters" isEqualToString:str]) {return kCLLocationAccuracyHundredMeters;} else if ([@"kCLLocationAccuracyKilometer" isEqualToString:str]) {return kCLLocationAccuracyKilometer;} else {return kCLLocationAccuracyBest;}
}

/**
 获取设置的经纬度坐标系类型
 */
-(int)getCoordinateType:(NSString*)str{if([@"BMKLocationCoordinateTypeBMK09LL" isEqualToString:str]) {return BMKLocationCoordinateTypeBMK09LL;} else if ([@"BMKLocationCoordinateTypeBMK09MC" isEqualToString:str]) {return BMKLocationCoordinateTypeBMK09MC;} else if ([@"BMKLocationCoordinateTypeWGS84" isEqualToString:str]) {return BMKLocationCoordinateTypeWGS84;} else if ([@"BMKLocationCoordinateTypeGCJ02" isEqualToString:str]) {return BMKLocationCoordinateTypeGCJ02;} else {return BMKLocationCoordinateTypeGCJ02;}


}


/**
 获取设置的利用地位类型
 */
-(int)getActivityType:(NSString*)str{if ([@"CLActivityTypeOther" isEqualToString:str]) {return CLActivityTypeOther;} else if ([@"CLActivityTypeAutomotiveNavigation" isEqualToString:str]) {return CLActivityTypeAutomotiveNavigation;} else if ([@"CLActivityTypeFitness" isEqualToString:str]) {return CLActivityTypeFitness;} else if ([@"CLActivityTypeOtherNavigation" isEqualToString:str]) {return CLActivityTypeOtherNavigation;} else {return CLActivityTypeAutomotiveNavigation;}


}

/**
 解析 flutter 端所设置的定位 SDK 参数
 */
-(BOOL)updateOption:(NSDictionary*)args {if(self.locManager) {//        NSLog(@"定位参数配置:%@",args);

        self.locManager.isNeedNewVersionReGeocode = YES;

        // 设置冀望定位精度
        if ([[args allKeys] containsObject:@"desiredAccuracy"]) {[self.locManager setDesiredAccuracy:[ self getDesiredAccuracy: args[@"desiredAccuracy"]]];
        }

        // 设置定位的最小更新间隔
        if ([[args allKeys] containsObject:@"distanceFilter"]) {self.locManager.distanceFilter = [args[@"distanceFilter"] doubleValue];
//            NSLog(@"最小更新间隔值:%f", [args[@"distanceFilter"] doubleValue]);
        }

        // 设置返回地位坐标系类型
        if ([[args allKeys] containsObject:@"BMKLocationCoordinateType"]) {[self.locManager setCoordinateType:[ self getCoordinateType: args[@"desiredAccuracy"]]];
        }

        // 设置利用地位类型
        if ([[args allKeys] containsObject:@"activityType"]) {[self.locManager setActivityType:[ self getActivityType: args[@"desiredAccuracy"]]];
        }

        // 设置是否须要返回新版本 rgc 信息
        if ([[args allKeys] containsObject:@"isNeedNewVersionRgc"]) {if ((bool)args[@"desiredAccuracy"]) {//                NSLog(@"须要返回新版本 rgc 信息");
                self.locManager.isNeedNewVersionReGeocode = YES;
            } else {//                NSLog(@"不须要返回新版本 rgc 信息");
                self.locManager.isNeedNewVersionReGeocode = NO;
            }

        }

        // 指定定位是否会被零碎主动暂停
        if ([[args allKeys] containsObject:@"pausesLocationUpdatesAutomatically"]) {if ((bool)args[@"pausesLocationUpdatesAutomatically"]) {//                NSLog(@"设置定位被零碎主动暂停");
                self.locManager.isNeedNewVersionReGeocode = YES;
            } else {//                NSLog(@"设置定位不能被零碎主动暂停");
                self.locManager.isNeedNewVersionReGeocode = NO;
            }

        }

        // 设置是否容许后盾定位
        if ([[args allKeys] containsObject:@"allowsBackgroundLocationUpdates"]) {if ((bool)args[@"allowsBackgroundLocationUpdates"]) {//                  NSLog(@"设置容许后盾定位");
                  self.locManager.isNeedNewVersionReGeocode = YES;
             } else {//                  NSLog(@"设置不容许后盾定位");
                  self.locManager.isNeedNewVersionReGeocode = NO;
                 self.locManager.distanceFilter = kCLDistanceFilterNone;
             }

        }

        // 设置定位超时工夫
        if ([[args allKeys] containsObject:@"locationTimeout"]) {[self.locManager setLocationTimeout:[args[@"locationTimeout"] integerValue]];
            self.locManager.coordinateType = BMKLocationCoordinateTypeGCJ02;
        }

        // 设置逆天文超时工夫
        if ([[args allKeys] containsObject:@"reGeocodeTimeout"]) {[self.locManager setReGeocodeTimeout:[args[@"reGeocodeTimeout"] integerValue]];
        }

        return YES;

    }
    return NO;
}
/**
 启动定位
 */
- (void)startLocation:(FlutterResult)result
{
    self.flutterResult = result;
    [self.locManager startUpdatingLocation];
}

/**
 进行定位
 */
- (void)stopLocation
{
    self.flutterResult = nil;
    [self.locManager stopUpdatingLocation];
}

- (BMKLocationManager *)locManager {if (!_locManager) {_locManager = [[BMKLocationManager alloc] init];
        _locManager.locatingWithReGeocode = YES;
        _locManager.delegate = self;
    }
    return _locManager;
}

/**
 *  @brief 间断定位回调函数
 *  @param manager 定位 BMKLocationManager 类。*  @param location 定位后果。*/
- (void)BMKLocationManager:(BMKLocationManager * _Nonnull)manager didUpdateLocation:(BMKLocation * _Nullable)location orError:(NSError * _Nullable)error

{if (error)
    {//        NSLog(@"locError:{%ld - %@};", (long)error.code, error.localizedDescription);
    } if (location) { // 失去定位信息，增加 annotation
        NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:1];

        if (location) {if (location.location.timestamp) {[dic setObject:[self getFormatTime:location.location.timestamp] forKey:@"locTime"]; // 定位工夫
            }


            if (location.location.horizontalAccuracy) {[dic setObject:@(location.location.horizontalAccuracy) forKey:@"radius"]; // 定位精度
            }


            if (location.location.coordinate.latitude) {[dic setObject:@(location.location.coordinate.latitude) forKey:@"latitude"]; // 纬度
            }

            if (location.location.coordinate.longitude) {[dic setObject:@(location.location.coordinate.longitude) forKey:@"longitude"]; // 经度
            }

            if (location.location.altitude) {//                NSLog(@"返回海拔高度信息");
                [dic setObject:@(location.location.altitude) forKey:@"altitude"];// 高度
            }


            if (location.rgcData) {[dic setObject:[location.rgcData country] forKey:@"country"]; // 国家
                [dic setObject:[location.rgcData province] forKey:@"province"]; // 省份
                [dic setObject:[location.rgcData city] forKey:@"city"]; // 城市
                if (location.rgcData.district) {[dic setObject:[location.rgcData district] forKey:@"district"]; // 区县
                }

                if (location.rgcData.street) {[dic setObject:[location.rgcData street] forKey:@"street"]; // 街道
                }

                if (location.rgcData.description) {
                    // 地址信息
                    [dic setObject:[location.rgcData description] forKey:@"address"];
                }


                if (location.rgcData.poiList) {

                    NSString* poilist;

                    if (location.rgcData.poiList.count == 1) {for (BMKLocationPoi * poi in location.rgcData.poiList) {poilist = [[poi name] stringByAppendingFormat:@",%@,%@", [poi tags], [poi addr]];
                        }

                    } else {for (int i = 0; i < location.rgcData.poiList.count - 1 ; i++) {poilist = [poilist stringByAppendingFormat:@"%@,%@,%@|", location.rgcData.poiList[i].name,location.rgcData.poiList[i].tags,location.rgcData.poiList[i].addr];
                        }

                        poilist = [poilist stringByAppendingFormat:@"%@,%@,%@",
                                location.rgcData.poiList[location.rgcData.poiList.count-1].name,location.rgcData.poiList[location.rgcData.poiList.count-1].tags,location.rgcData.poiList[location.rgcData.poiList.count-1].addr];

                    }
                    [dic setObject: poilist forKey:@"poiList"]; // 周边 poi 信息

                }
            }
        } else {[dic setObject: @1 forKey:@"errorCode"]; // 定位后果错误码
            [dic setObject:@"location is null" forKey:@"errorInfo"]; // 定位错误信息
        }

        // 定位后果回调工夫
        [dic setObject:[self getFormatTime:[NSDate date]] forKey:@"callbackTime"];

        [[BdmapFlutterStreamManager sharedInstance] streamHandler].eventSink(dic);
//        NSLog(@"x=%f,y=%f",location.location.coordinate.latitude,location.location.coordinate.longitude);
    }
}

/**
 格式化工夫
 */
- (NSString *)getFormatTime:(NSDate*)date
{NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
    NSString *timeString = [formatter stringFromDate:date];
    return timeString;
}

@end

Flutter 局部

设置 AK

  @override
  void initState() {super.initState();
    _requestPermission(); // 执行权限申请

    if (Platform.isIOS == true) {
      FlutterBaiduPluginDucafecat.setApiKeyForIOS("dkYT07blcAj3drBbcN1eGFYqt16HP1pR");
    }
  }

其它代码和 android 同接口 无影响

参考

  • https://lbsyun.baidu.com/apic…
  • https://flutter.dev/docs/deve…
  • http://lbsyun.baidu.com/index…
  • http://lbsyun.baidu.com/index…

© 猫哥

https://ducafecat.tech

https://ducafecat.gitee.io

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前端
发表至： 前端
2020-08-27
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