辅助提升定位精度

功能场景

提示用户开启设备WiFi模块以提升定位准确度。

//mapopen-website-wiki.bj.bcebos.com/demos/AndroidVideos/辅助提升定位精度.mp4

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Android定位SDK

下载源码

核心接口

类

接口

描述

LocationClientOption

setLocationMode(LocationClientOption.LocationMode mode)

设置定位模式

核心代码

1.设置高精度定位模式

JAVA

/**
* 初始化定位参数
*/
private void initLocation() {
    // 初始化客户端
    mLocationClient = new LocationClient(this);
    myLocationListener = new MyLocationListener();
    mLocationClient.registerLocationListener(myLocationListener);
    LocationClientOption mOption = new LocationClientOption();
    // 设置高精度定位模式
    mOption.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy); 
    // 设置定位参数
    mLocationClient.setLocOption(mOption);
}

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2.引导用户打开设备WIFI模块

JAVA

// 打开系统wifi界面设置
Intent intent = new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS);
startActivity(intent); // 打开系统设置界面

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//mapopen-website-wiki.bj.bcebos.com/demos/iostest.MP4

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使用产品

产品1

>

产品2

下载源码

核心接口

类

接口

描述

备注

- (void)clearClusterItems;

清除标注集群items

V4.0.0起

BMKClusterManager

- (NSArray<BMKCluster *> *)getClusters:(CGFloat)zoomLevel;

根据地图缩放级别获取标注集群

V4.0.0起

核心代码

1.第一步

Objective-C

1
/** 更新标注展示. */
- (void)updateClusters {
_clusterZoom = (NSInteger)_mapView.zoomLevel;
@synchronized(_clusterManager.clusterCaches) {
     NSMutableArray *clusters = [_clusterManager.clusterCaches objectAtIndex:(_clusterZoom - 3)];
    if (clusters.count > 0) {

        // 移除一组标注
        [_mapView removeAnnotations:_mapView.annotations];
        //将一组标注添加到当前地图View中
        [_mapView addAnnotations:clusters];
    } else {
    __weak typeof(self) weakSelf = self;
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            // 获取聚合后的标注
            __block NSArray *array = [weakSelf.clusterManager getClusters:weakSelf.clusterZoom];
            dispatch_async(dispatch_get_main_queue(), ^{
                for (BMKCluster *item in array) {
                    ClusterAnnotation *annotation = [[ClusterAnnotation alloc] init];
                    // 设置标注的经纬度坐标
                    annotation.coordinate = item.coordinate;
                    annotation.size = item.size;
                    // 设置标注的标题
                    annotation.title = [NSString stringWithFormat:@"我是%lu个", (unsigned long)item.size];
                    [clusters addObject:annotation];
                }
                // 移除一组标注
                [weakSelf.mapView removeAnnotations:weakSelf.mapView.annotations];
                // 将一组标注添加到当前地图View中
                [weakSelf.mapView addAnnotations:clusters];
            });
        });
    }
}
}

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2.第二步

Objective-C

2
/** 更新标注展示. */
- (void)updateClusters {
_clusterZoom = (NSInteger)_mapView.zoomLevel;
@synchronized(_clusterManager.clusterCaches) {
     NSMutableArray *clusters = [_clusterManager.clusterCaches objectAtIndex:(_clusterZoom - 3)];
    if (clusters.count > 0) {

        // 移除一组标注
        [_mapView removeAnnotations:_mapView.annotations];
        //将一组标注添加到当前地图View中
        [_mapView addAnnotations:clusters];
    } else {
    __weak typeof(self) weakSelf = self;
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            // 获取聚合后的标注
            __block NSArray *array = [weakSelf.clusterManager getClusters:weakSelf.clusterZoom];
            dispatch_async(dispatch_get_main_queue(), ^{
                for (BMKCluster *item in array) {
                    ClusterAnnotation *annotation = [[ClusterAnnotation alloc] init];
                    // 设置标注的经纬度坐标
                    annotation.coordinate = item.coordinate;
                    annotation.size = item.size;
                    // 设置标注的标题
                    annotation.title = [NSString stringWithFormat:@"我是%lu个", (unsigned long)item.size];
                    [clusters addObject:annotation];
                }
                // 移除一组标注
                [weakSelf.mapView removeAnnotations:weakSelf.mapView.annotations];
                // 将一组标注添加到当前地图View中
                [weakSelf.mapView addAnnotations:clusters];
            });
        });
    }
}
}

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3.名字

Objective-C

3
/** 更新标注展示. */
- (void)updateClusters {
_clusterZoom = (NSInteger)_mapView.zoomLevel;
@synchronized(_clusterManager.clusterCaches) {
     NSMutableArray *clusters = [_clusterManager.clusterCaches objectAtIndex:(_clusterZoom - 3)];
    if (clusters.count > 0) {

        // 移除一组标注
        [_mapView removeAnnotations:_mapView.annotations];
        //将一组标注添加到当前地图View中
        [_mapView addAnnotations:clusters];
    } else {
    __weak typeof(self) weakSelf = self;
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            // 获取聚合后的标注
            __block NSArray *array = [weakSelf.clusterManager getClusters:weakSelf.clusterZoom];
            dispatch_async(dispatch_get_main_queue(), ^{
                for (BMKCluster *item in array) {
                    ClusterAnnotation *annotation = [[ClusterAnnotation alloc] init];
                    // 设置标注的经纬度坐标
                    annotation.coordinate = item.coordinate;
                    annotation.size = item.size;
                    // 设置标注的标题
                    annotation.title = [NSString stringWithFormat:@"我是%lu个", (unsigned long)item.size];
                    [clusters addObject:annotation];
                }
                // 移除一组标注
                [weakSelf.mapView removeAnnotations:weakSelf.mapView.annotations];
                // 将一组标注添加到当前地图View中
                [weakSelf.mapView addAnnotations:clusters];
            });
        });
    }
}
}

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