本节目标

创建 ios flutter 插件流程
集成百度定位功能

视频

https://www.bilibili.com/video/BV1HT4y1L73i/

代码

https://github.com/ducafecat/flutter_baidu_plugin_ducafecat/releases/tag/v1.0.3

百度平台部分

设置 AK

https://lbsyun.baidu.com/apiconsole/key#/home

添加应用

查看 Bundle Identifier

IOS 部分

自动部署 CocoaPods

安装工具

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

安装百度 sdk 包

pod install

升级

pod repo update

pod search 无法搜索到类库的解决办法（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成功后会生成~/Library/Caches/CocoaPods/search_index.json文件终端输入rm ~/Library/Caches/CocoaPods/search_index.json删除成功后再执行pod search（3）执行pod search

Info.plist 定位授权

example/ios/Runner/Info.plist

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

消息通知 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 = [FlutterMethodChannelmethodChannelWithName:@"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]){ // 停止定位//        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);}
}/**获取设置的期望定位精度*/
-(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;}}/**获取设置的应用位置类型*/
-(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;// 设置期望定位精度if ([[args allKeys] containsObject:@"desiredAccuracy"]) {[self.locManager setDesiredAccuracy:[ self getDesiredAccuracy: args[@"desiredAccuracy"]]];}// 设置定位的最小更新距离if ([[args allKeys] containsObject:@"distanceFilter"]) {self.locManager.distanceFilter = [args[@"distanceFilter"] doubleValue];
//            NSLog(@"最小更新距离值:%f", [args[@"distanceFilter"] doubleValue]);}// 设置返回位置坐标系类型if ([[args allKeys] containsObject:@"BMKLocationCoordinateType"]) {[self.locManager setCoordinateType:[ self getCoordinateType: args[@"desiredAccuracy"]]];}// 设置应用位置类型if ([[args allKeys] containsObject:@"activityType"]) {[self.locManager setActivityType:[ self getActivityType: args[@"desiredAccuracy"]]];}// 设置是否需要返回新版本rgc信息if ([[args allKeys] containsObject:@"isNeedNewVersionRgc"]) {if ((bool)args[@"desiredAccuracy"]) {
//                NSLog(@"需要返回新版本rgc信息");self.locManager.isNeedNewVersionReGeocode = YES;} else {
//                NSLog(@"不需要返回新版本rgc信息");self.locManager.isNeedNewVersionReGeocode = NO;}}// 指定定位是否会被系统自动暂停if ([[args allKeys] containsObject:@"pausesLocationUpdatesAutomatically"]) {if ((bool)args[@"pausesLocationUpdatesAutomatically"]) {
//                NSLog(@"设置定位被系统自动暂停");self.locManager.isNeedNewVersionReGeocode = YES;} else {
//                NSLog(@"设置定位不能被系统自动暂停");self.locManager.isNeedNewVersionReGeocode = NO;}}// 设置是否允许后台定位if ([[args allKeys] containsObject:@"allowsBackgroundLocationUpdates"]) {if ((bool)args[@"allowsBackgroundLocationUpdates"]) {
//                  NSLog(@"设置允许后台定位");self.locManager.isNeedNewVersionReGeocode = YES;} else {
//                  NSLog(@"设置不允许后台定位");self.locManager.isNeedNewVersionReGeocode = NO;self.locManager.distanceFilter = kCLDistanceFilterNone;}}// 设置定位超时时间if ([[args allKeys] containsObject:@"locationTimeout"]) {[self.locManager setLocationTimeout:[args[@"locationTimeout"] integerValue]];self.locManager.coordinateType = BMKLocationCoordinateTypeGCJ02;}// 设置逆地理超时时间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];
}/**停止定位*/
- (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 连续定位回调函数*  @param manager 定位 BMKLocationManager 类。*  @param location 定位结果。*/
- (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) { // 得到定位信息，添加annotationNSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:1];if (location) {if (location.location.timestamp) {[dic setObject:[self getFormatTime:location.location.timestamp] forKey:@"locTime"]; // 定位时间}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"]; // 定位结果错误码[dic setObject:@"location is null" forKey:@"errorInfo"]; // 定位错误信息}// 定位结果回调时间[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);}
}/**格式化时间*/
- (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 部分

设置 AK

  @overridevoid initState() {super.initState();_requestPermission(); // 执行权限请求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/apiconsole/key#/home
https://flutter.dev/docs/development/packages-and-plugins/developing-packages#step-2c-add-ios-platform-code-swifthm
http://lbsyun.baidu.com/index.php?title=ios-locsdk/guide/create-project/cocoapods-create
http://lbsyun.baidu.com/index.php?title=ios-locsdk

https://ducafecat.tech

https://ducafecat.gitee.io