Map: Clgeocoder address resolution and anti-address resolution

1. Importing the System framework

/**
* Interface effect 1 to navigate to the input address, and to indicate the latitude and longitude of the address
*/

2.viewcontroller.h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface Viewcontroller:uiviewcontroller

@property (Strong, nonatomic) Iboutlet Uisearchbar *searchbar;
@property (Strong, nonatomic) Iboutlet Mkmapview *mapview;
@property (Strong, nonatomic) Clgeocoder *geocoder;
@end

3.viewcontroller.m

@interface Viewcontroller () <UISearchBarDelegate>

@end

@implementation Viewcontroller

-(void) Viewdidload {
[Super Viewdidload];
Self.geocoder = [[Clgeocoder alloc]init];
self.mapView.zoomEnabled = YES;
self.mapView.rotateEnabled = NO;
self.mapView.scrollEnabled = YES;
Self.mapView.showsUserLocation = YES;
Self.mapView.mapType = Mkmaptypestandard;
Self.searchBar.text = @ "Tiananmen Square";
Self.searchBar.delegate = self;
}
Click to search
-(void) searchbarsearchbuttonclicked: (Uisearchbar *) Searchbar
{
Call the Searchbar method to search
[Self startsearch:searchbar];
}
Click Cancel
-(void) searchbarcancelbuttonclicked: (Uisearchbar *) Searchbar
{
Call the Searchbar method to search
[Self startsearch:searchbar];

}
Perform a search
-(void) Startsearch: (Uisearchbar *) Searchbar
{
Turn off the Searchbar virtual keyboard
[Self.searchbar Resignfirstresponder];
NSString *searchtext = Self.searchBar.text;
if (searchtext! = Nil && searchtext.length>0) {
[Self locateat:searchtext];
}
}
When you enter text
-(void) searchbartextdidbeginediting: (Uisearchbar *) Searchbar
{
Show Cancel button
Searchbar.showscancelbutton = YES;
Find the Cancel button by traversing and set the text of the Cancel button to search
For (id cc in [searchbar.subviews[0]subviews]) {
if ([Cc Iskindofclass:[uibutton class]]) {
UIButton *btn = (UIButton *) cc;
[Btn settitle:@ "search" forstate:uicontrolstatenormal];
}
}
}
Converts a string address to latitude and longitude, and performs a positioning
-(void) Locateat: (NSString *) add
{
[Self.geocoder geocodeaddressstring:add completionhandler:^ (nsarray<clplacemark *> * _Nullable Placemarks, Nserror * _nullable error) {
if ([placemarks count]>0 && error = = nil) {
NSLog (@ "Search to match%lu address data", (unsigned long) placemarks.count);
Process the first address
Clplacemark *placemark = [Placemarks objectatindex:0];
NSLog (@ "longitude =:%f", placemark.location.coordinate.longitude);
NSLog (@ "latitude =:%f", placemark.location.coordinate.latitude);
NSLog (@ "country =%@", placemark.country);
NSLog (@ "postcode =%@", placemark.postalcode);
NSLog (@ "position =%@", placemark.locality);
NSString *msg = [NSString stringwithformat:@ "longitude =%f, Latitude =%f", Placemark.location.coordinate.longitude, Placemark.location.coordinate.latitude];
[[[Uialertview alloc]initwithtitle:@ Information] message:msg delegate:self cancelbuttontitle:@ "OK" otherbuttontitles:nil] Show];
Set the extent of the map display
Mkcoordinatespan span;
The smaller the map display, the clearer the details
Span.latitudedelta = 0.0001;
Span.longitudedelta = 0.0001;
Mkcoordinateregion region = {Placemark.location.coordinate,span};
Set the location of the map center to the search
[Self.mapview setregion:region];
Creates an object that will be used as the map stroke.
Mkpointannotation *point = [[Mkpointannotation alloc]init];
Set the coordinates of a map anchor point
Point.coordinate = placemark.location.coordinate;
Set the title of the map anchor Point
Point.title = Placemark.name;
Set the subtitle of the map anchor Point
Point.subtitle = [NSString stringwithformat:@ "%@-%@-%@-%@", Placemark.country,placemark.administrativearea, Placemark.locality,placemark.sublocality];
Add a map anchor point to the map
[Self.mapview Addannotation:point];
Select the specified anchor point
[Self.mapview Selectannotation:point Animated:yes];
}
Else
{
NSLog (@ "No search results");
}
}];
}

@end

/**
* Interface Effect 2 Click the Parse button of interface 1 to jump to interface 2

* Implementation of input address, resolution to latitude and longitude

* Input latitude and longitude, show detailed address
*/

4. Interface 2. h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface Jiexiviewcontroller:uiviewcontroller
@property (Strong, nonatomic) Iboutlet Uitextfield *dizhijiexi;
@property (Strong, nonatomic) Iboutlet Uitextfield *jingdu;
@property (Strong, nonatomic) Iboutlet Uitextfield *weidu;
@property (Strong, nonatomic) Iboutlet Uitextview *showtv;
-(Ibaction) Jiexi: (ID) sender;
-(Ibaction) Fanjeixi: (ID) sender;
@property (Strong, nonatomic) clgeocoder* Geocoder;
@end
5. Interface 2 of the. m

@interface Jiexiviewcontroller ()

@end

@implementation Jiexiviewcontroller

-(void) Viewdidload {
[Super Viewdidload];
Creating an Address resolver
Self.geocoder = [[Clgeocoder alloc]init];
}

-(Ibaction) Jiexi: (ID) Sender {
Gets the address string entered by the user
NSString *inputadd = Self.dizhijiexi.text;
if (inputadd! = Nil && inputadd.length>0) {
[Self.geocoder geocodeaddressstring:inputadd completionhandler:^ (nsarray<clplacemark *> * _Nullable placemarks , Nserror * _nullable error) {
If the number of collection elements of the parsed result is greater than 1, the longitude and latitude information is obtained.
if (Placemarks.count > 0)
{
Only the first parse result is processed, and the list is used in the actual project to allow the user to select
clplacemark* placemark = placemarks[0];
cllocation* location = placemark.location;
Self.showTV.text = [NSString stringWithFormat:
@ "Longitude of%@:%g, Latitude:%g", Inputadd,
Location.coordinate.longitude,
Location.coordinate.latitude];
}
Did not get the result of parsing.
Else
{
Use Uialertview to alert users
[[[Uialertview alloc] initwithtitle:@ "Reminder"
message:@ "The address you entered cannot be resolved" Delegate:nil
cancelbuttontitle:@ "OK" otherbuttontitles:nil]
Show];
}

}];
}
}

-(Ibaction) Fanjeixi: (ID) Sender {

nsstring* longitudestr = Self.jingdu.text;
nsstring* latitudestr = Self.weidu.text;
if (longitudestr! = nil && longitudestr.length > 0
&& latitudestr! = Nil && latitudestr.length > 0)
{
Encapsulates the latitude and longitude entered by the user into a Cllocation object
cllocation* location = [[Cllocation alloc]
Initwithlatitude:[latitudestr Floatvalue]
Longitude:[longitudestr Floatvalue]];
[Self.geocoder reversegeocodelocation:location Completionhandler:
^ (Nsarray *placemarks, Nserror *error)
{
If the number of collection elements of the parsed result is greater than 1, the longitude and latitude information is obtained.
if (Placemarks.count > 0)
{
Only the first parse result is processed, and the actual project can use the list to let the user choose
clplacemark* placemark = placemarks[0];
Get Detailed address information
nsarray* Addrarray = [placemark.addressdictionary
objectforkey:@ "Formattedaddresslines"];
Stitching the detailed address into a string
nsmutablestring* addr = [[Nsmutablestring alloc] init];
for (int i = 0; i < addrarray.count; i + +)
{
[addr Appendstring:addrarray[i]];
}
Self.showTV.text = [NSString stringWithFormat:
@ "Longitude:%g, Latitude:%g's address is:%@",
Location.coordinate.longitude,
Location.coordinate.latitude, addr];
}
Did not get the result of parsing.
Else
{
Use Uialertview to alert users
[[[Uialertview alloc] initwithtitle:@ "Reminder"
message:@ "The address you entered cannot be resolved" Delegate:nil
cancelbuttontitle:@ "OK" otherbuttontitles:nil]
Show];
}
}];
}
}
-(void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (Uievent *) event
{
[Self.view Endediting:yes];
}
@end

Map: Clgeocoder address resolution and anti-address resolution