3.weexeros获取地理位置2019.3

ios端可以直接获取经纬度

  this.$geo.get().then(
                data => {
                    this.$notice.alert({
                      message:
                           '经度: ' +
                         data.locationLng +
                        '\r\n\r\n纬度: ' +
                        data.locationLat,
                      okTitle: '确认',
                       callback () {
                            点击确认按钮的回调
                       }
                    });
                },
                error => {
                    this.$notice.toast({
                        message: '获取位置失败'
                    });
                    console.log(error);
                }
            );

此时没有获取具体的地理位置
逐步分析
1.查看封装的geo.js

const geolocation = weex.requireModule('bmGeolocation')
const Geolocation = Object.create(null)

Geolocation.install = (Vue) => {
    Vue.prototype.$geo = {
        get () {
            return new Promise((resolve, reject) => {
                geolocation.getGeolocation(({ status, errorMsg, data }) => {
                    status === 0 ? resolve(data) : reject({ status, errorMsg, data })
                })
            })
        }
    }
}

Vue.use(Geolocation)

weex.requireModule('bmGeolocation')
引入的是这个，全局搜索bmGeolocation

图片.png

这里是注册，真正调用的是
BMGeolocationModule类

图片.png
头文件中遵守了WXModuleProtocol协议

实现文件中

@synthesize weexInstance;

WX_EXPORT_METHOD(@selector(getGeolocation:))


- (void)getGeolocation:(WXModuleCallback)callback
{
    
    [[JYTLocationManager shareInstance] getCurrentLocation:^(NSString *lon, NSString *lat,NSString *city,NSString *subLocality,NSString *street) {
        if (callback) {
            
            NSInteger resCode = BMResCodeError;
            NSDictionary *data = nil;
            if (lon && lat) {
                resCode = BMResCodeSuccess;
                data = @{@"locationLat": lat,@"locationLng": lon,@"city":city,@"subLocality":subLocality,@"street":street};
            }
            
            /* 构建callback数据 */
            NSDictionary *resultData = [NSDictionary configCallbackDataWithResCode:resCode msg:nil data:data];
            
            callback(resultData);
            
        }
    }];
}

原先只有经度和纬度NSString *lon, NSString *lat两个字段的，现在拓展多三个字段NSString *subLocality,NSString *street，城市，区域，和街道。

里面是调用JYTLocationManager类获取经纬度的

图片.png

这个方法里面获取到位置，所以在这里增加反向地理编码，把经纬度转为具体地址。

#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    CLLocation *location = [locations firstObject]; //取出第一个位置
    
    /* 将gps坐标系转换成gcj-02坐标系 */
    CLLocationCoordinate2D coordinate = [TransformCLLocation wgs84ToGcj02:location.coordinate];
    [self.locationManager stopUpdatingLocation];
    
  
    
    
    //反向地理编码
    
    CLGeocoder *clGeoCoder = [[CLGeocoder alloc] init];
    
    CLLocation *cl = [[CLLocation alloc] initWithLatitude:coordinate.latitude longitude:coordinate.longitude];
    __block  NSString *city=@"";
    __block  NSString *subLocality = @"";
    __block NSString *street = @"";
    [clGeoCoder reverseGeocodeLocation:cl completionHandler: ^(NSArray *placemarks,NSError *error) {
        
        for (CLPlacemark *placeMark in placemarks) {
 
            NSDictionary *addressDic = placeMark.addressDictionary;
 
            NSString *state=[addressDic objectForKey:@"State"];
            
            city=[addressDic objectForKey:@"City"];
            
            subLocality=[addressDic objectForKey:@"SubLocality"];
            
            street=[addressDic objectForKey:@"Street"];
 
            NSLog(@"所在城市====%@ %@ %@ %@", state, city, subLocality, street);
            [self callBackWithLongitude:[NSString stringWithFormat:@"%f",coordinate.longitude] latitude:[NSString stringWithFormat:@"%f",coordinate.latitude] city:city subLocality:subLocality street:street];
            [_locationManager stopUpdatingLocation];
            
        }
    }];
  
}

最后使用

this.$geo.get().then(
                data => {
                    console.log('获取到城市city=',data.city)
                },
                error => {
                    this.$notice.toast({
                        message: '获取位置失败'
                    });
                    console.log(error);
                }
            );

最后发现是个坑，一旦pod update,自己修改的第三方代码，代码就会重置！！！

只能自己再封装一个原生代码制作成pod，供js调用。