iOS 百度地图拖拽更新位置反编码

类似于微信中的发送位置，拖拽从新定位，以及反编码，列表附近的位置。

百度地图拖拽更新位置.gif

思路就是将一个UIImageView固定在地图中间，每次更新位置，给UIImageView添加动画即可。

代码如下：

#import "FTBasicController.h"
typedef void (^SelectBlock) (NSString *address,CLLocationCoordinate2D select);
@interface FTUploadAddressController : FTBasicController
@property(nonatomic, copy)SelectBlock selectBlock;
@end

#import "FTUploadAddressController.h"
#import "FTBMKPoiInfo.h"
#import "FTPoiCell.h"
@interface FTUploadAddressController ()@property(nonatomic,strong)BMKLocationService *locService;
@property(nonatomic,strong)BMKUserLocation *userLocation;
@property(nonatomic,strong)BMKMapView *mapView;
@property(nonatomic,strong)UITableView *tableview;
@property(nonatomic,strong)BMKGeoCodeSearch *geocodesearch;
@property(nonatomic,strong)UIImageView *loactionView;
@property(nonatomic,strong)NSMutableArray *dataA;
@property(nonatomic,strong)LxButton *poiBackBtn;
@property(nonatomic,assign)CLLocationCoordinate2D selectedCoordinate;
@property(nonatomic,strong)NSString *selectAddress;
@end
@implementation FTUploadAddressController
-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    
    self.fd_interactivePopDisabled = YES;
    
    if (!([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedAlways || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse) &&[CLLocationManager authorizationStatus] != kCLAuthorizationStatusNotDetermined){
        [self judgeOpenlocation];
    }else{
        [_mapView viewWillAppear];
        _mapView.delegate = self; // 此处记得不用的时候需要置nil，否则影响内存的释放
        
        
        _locService.delegate = self;
          _geocodesearch.delegate = self; // 此处记得不用的时候需要置nil，否则影响内存的释放
        _mapView.showsUserLocation = NO;//先关闭显示的定位图层
        _mapView.userTrackingMode = 0;
        _mapView.showsUserLocation = YES;//显示定位图层
        
        
        [self.locService startUserLocationService];
        
        
    }
    
    
    
}
-(void)judgeOpenlocation{
    
    UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"打开[定位服务]来允许[应用名字]确定您的位置" message:@"请在系统设置中开启定位服务(设置>隐私>定位服务>应用名字>始终)" preferredStyle:UIAlertControllerStyleAlert];
    [alertVC addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];
    [alertVC addAction:[UIAlertAction actionWithTitle:@"去设置" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
        
        if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 10.000000) {
            //跳转到定位权限页面
            NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
            if( [[UIApplication sharedApplication]canOpenURL:url] ) {
                [[UIApplication sharedApplication] openURL:url];
            }
        }else {
            //跳转到定位开关界面
            NSURL *url = [NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"];
            if( [[UIApplication sharedApplication]canOpenURL:url] ) {
                [[UIApplication sharedApplication] openURL:url];
            }
        }
    }]];
    [self presentViewController:alertVC animated:YES completion:nil];
    
}
-(void)viewWillDisappear:(BOOL)animated
{
     self.fd_interactivePopDisabled = NO;
    [_mapView viewWillDisappear];
    _mapView.delegate = nil; // 不用时，置nil
    [self.locService stopUserLocationService];
     _geocodesearch.delegate = nil; // 不用时，置nil
    _locService.delegate = nil;
    
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.title = @"所在位置";
    
     self.locService = [[BMKLocationService alloc]init];
    self.geocodesearch =  [[BMKGeoCodeSearch alloc]init];
     [self setup];
    
     self.navigationItem.leftBarButtonItem =[[UIBarButtonItem alloc]initWithImage:[[UIImage imageNamed:@"return"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStylePlain target:self action:@selector(backReturn)];
}
-(void)backReturn{
    if (self.selectBlock) {
        self.selectBlock(self.selectAddress, self.selectedCoordinate);
        [self.navigationController popViewControllerAnimated:YES];
    }
}
-(void)setup{
     [self.view addSubview:self.mapView];
    
    [self.view addSubview:self.tableview];
    
    [self.mapView addSubview:self.loactionView];
    
    [self.mapView addSubview:self.poiBackBtn];
    
     [self.poiBackBtn LX_SetShadowPathWith:[UIColor grayColor] shadowOpacity:0.5 shadowRadius:5 shadowSide:LXShadowPathBottom shadowPathWidth:3];
    
    FTWS(weakSelf);
    [self.poiBackBtn addClickBlock:^(UIButton *button) {
        
         [weakSelf.mapView setCenterCoordinate:weakSelf.userLocation.location.coordinate];
        
    }];
}
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
    //        NSLog(@"didUpdateUserLocation lat %f,long %f",userLocation.location.coordinate.latitude,userLocation.location.coordinate.longitude);
    [_mapView updateLocationData:userLocation];
    
    self.userLocation = userLocation;
    
    [self.mapView setCenterCoordinate:userLocation.location.coordinate];
   
    BMKReverseGeoCodeOption * option = [[BMKReverseGeoCodeOption alloc]init];
    option.reverseGeoPoint = userLocation.location.coordinate;
    BOOL flag = [_geocodesearch reverseGeoCode:option];
    
    if (flag) {
        
    }
    
    //更新位置之后必须停止定位，
    [_locService stopUserLocationService];
        
    
    
}
-(void)mapView:(BMKMapView *)mapView regionDidChangeAnimated:(BOOL)animated{
    
    
    NSLog(@"地图拖动");
    [UIView animateWithDuration:0.30 animations:^{
        self.loactionView.centerY -=8;
    } completion:^(BOOL finished) {
        self.loactionView.centerY +=8;
    }];
    
    CGPoint touchPoint = self.mapView.center;
    
    CLLocationCoordinate2D touchMapCoordinate =
    [self.mapView convertPoint:touchPoint toCoordinateFromView:self.mapView];//这里touchMapCoordinate就是该点的经纬度了
    NSLog(@"touching %f,%f",touchMapCoordinate.latitude,touchMapCoordinate.longitude);
    
    //选择的上传地址
    self.selectedCoordinate = touchMapCoordinate;
    BMKReverseGeoCodeOption * option = [[BMKReverseGeoCodeOption alloc]init];
    option.reverseGeoPoint = touchMapCoordinate;
    BOOL flag = [_geocodesearch reverseGeoCode:option];
    if (flag) {
        
    }
    
}
#pragma mark---获取反编码的数据---
-(void)onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{
        BMKAddressComponent *component=[[BMKAddressComponent alloc]init];
        component=result.addressDetail;
    
    [self.dataA removeAllObjects];
    
    for (int i =0; i< result.poiList.count; i++) {
        BMKPoiInfo *info = result.poiList[i];
        FTBMKPoiInfo *ftInfo =[[FTBMKPoiInfo alloc]init];
        ftInfo.address = info.address;
        ftInfo.seleced = NO;
        if (i == 0) {
            ftInfo.seleced = YES;
            self.selectAddress = ftInfo.address;
        }
        [self.dataA addObject:ftInfo];
    }
    [self.tableview reloadData];
}
#pragma mark--- 定位的方法--
- (void)didUpdateUserHeading:(BMKUserLocation *)userLocation
{
    [_mapView updateLocationData:userLocation];
    //    NSLog(@"heading is %@",userLocation.heading);
}
-(BMKMapView *)mapView{
    if (!_mapView) {
        _mapView =[[BMKMapView alloc]initWithFrame:CGRectMake(0, NAVH, Device_Width, 350)];
        _mapView.zoomLevel = 18;
        _mapView.minZoomLevel = 3;
        _mapView.maxZoomLevel = 21;
//        BMKLocationViewDisplayParam *displayParam = [[BMKLocationViewDisplayParam alloc]init];
//        displayParam.isRotateAngleValid = true;//跟随态旋转角度是否生效
//        displayParam.isAccuracyCircleShow = false;//精度圈是否显示
//        displayParam.locationViewOffsetX = 0;//定位偏移量(经度)
//        displayParam.locationViewOffsetY = 0;//定位偏移量（纬度）
//        [_mapView updateLocationViewWithParam:displayParam];
        
    }
    return _mapView;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return self.dataA.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    FTPoiCell *cell =[tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
    if (!cell) {
        cell =[[FTPoiCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
    }
    FTBMKPoiInfo *info = self.dataA[indexPath.row];
    cell.info = info;
    return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    FTBMKPoiInfo *info = self.dataA[indexPath.row];
    self.selectAddress = info.address;
    
    [self.dataA enumerateObjectsUsingBlock:^(FTBMKPoiInfo * obj, NSUInteger idx, BOOL * _Nonnull stop) {
        
        if (obj == info) {
            obj.seleced = YES;
        }else{
            obj.seleced = NO;
        }
        
        [self.tableview reloadData];
    }];
    
    if (self.selectBlock) {
        self.selectBlock(self.selectAddress,self.selectedCoordinate);
        
        [self.navigationController popViewControllerAnimated:YES];
    }
    
}
-(UITableView *)tableview{
    
    if (!_tableview) {
        _tableview =[[UITableView alloc]initWithFrame:CGRectMake(0, self.mapView.bottom, Device_Width, Device_Height - self.mapView.bottom) style:UITableViewStylePlain];
        _tableview.delegate = self;
        _tableview.dataSource = self;
        _tableview.showsVerticalScrollIndicator = NO;
        _tableview.showsHorizontalScrollIndicator = NO;
        _tableview.tableFooterView = [UIView new];
        _tableview.rowHeight = 44;
        [_tableview registerNib:[UINib nibWithNibName:@"FTPoiCell" bundle:nil] forCellReuseIdentifier:@"cell"];
//        [_tableview registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
        
    }
    return _tableview;
}
-(NSMutableArray *)dataA{
    if (!_dataA) {
        _dataA =[NSMutableArray array];
    }
    return _dataA;
}
-(UIImageView *)loactionView{
    if (!_loactionView) {
        _loactionView =[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"ditu_red"]];
        _loactionView.center = CGPointMake(self.mapView.width/2, self.mapView.height/2);
       
    }
    return _loactionView;
}
-(LxButton *)poiBackBtn{
    if (!_poiBackBtn) {
        _poiBackBtn =[LxButton LXButtonWithTitle:nil titleFont:nil Image:nil backgroundImage:nil backgroundColor:[UIColor whiteColor] titleColor:nil frame:CGRectMake(Device_Width - 75, self.mapView.height - 75, 50, 50)];
        [_poiBackBtn setFTCornerdious:25];
        UIImageView *imageView =[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"poi_back"]];
        
        imageView.center = CGPointMake(25, 25);
        [_poiBackBtn addSubview:imageView];
       
        
    }
    return _poiBackBtn;
}
@end