iOS实现百度地图拖拽后更新位置以及反编码

前言

最近在开发中遇到了百度地图的开发，功能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。分析出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。

效果图：

百度地图拖拽更新位置.gif

实现思路

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

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对的支持。