iOS百度地图反编码个人见解

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 ()<BMKMapViewDelegate,BMKLocationServiceDelegate,UITableViewDelegate,UITableViewDataSource,BMKGeoCodeSearchDelegate>

@property(nonatomic,strong)BMKLocationService *locService

@property(nonatomic,strong)BMKUserLocation *userLocatio

@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 *poiBackBt

@property(nonatomic,assign)CLLocationCoordinate2D selectedCoordinate

@property(nonatomic,strong)NSString *selectAddre

@end

@implementation FTUploadAddressController

-(void)viewWillAppear:(BOOL)animated{

[super viewWillAppear:animated]

elf.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

elf.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.

elf.title = @"所在位置"

elf.locService = [[BMKLocationService alloc]init]

elf.geocodesearch =  [[BMKGeoCodeSearch alloc]init]

[self setup]

elf.navigationItem.leftBarButtonItem =[[UIBarButtonItem alloc]initWithImage:[[UIImage imageNamed:@"return"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStylePlain target:self action:@selector(backReturn)]

-(void)backReturn{

if (self.selectBlock) {

elf.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 *)userLocatio

//        NSLog(@"didUpdateUserLocation lat %f,long %f",userLocation.location.coordinate.latitude,userLocation.location.coordinate.longitude)

[_mapView updateLocationData:userLocation]

elf.userLocation = userLocatio

[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:^{

elf.loactionView.centerY -=8

} completion:^(BOOL finished) {

elf.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

elf.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.addre

ftInfo.seleced = NO

if (i == 0) {

ftInfo.seleced = YES

elf.selectAddress = ftInfo.addre

[self.dataA addObject:ftInfo]

[self.tableview reloadData]

#pragma mark--- 定位的方法--

- (void)didUpdateUserHeading:(BMKUserLocation *)userLocatio

[_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]

elf.selectAddress = info.addre

[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) {

elf.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 _poiBackBt

@end