IOS实现自动定位和手动选择城市功能

#PRagma mark  MAMAP init AND 定位回调- (void)initMap{      if (![CLLocationManager locationServicesEnabled]) {        [PXAlertView showAlertWithTitle:@"提示" message:[NSString stringWithFormat:@"请开启定位:设置 > 隐私 > 位置 > 定位服务"] completion:^(BOOL cancelled, NSInteger buttonIndex) {        }];        return;    }    else if([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied){        [PXAlertView showAlertWithTitle:@"提示" message:[NSString stringWithFormat:@"定位失败，请开启定位:设置 > 隐私 > 位置 > 定位服务 下 应用"] completion:^(BOOL cancelled, NSInteger buttonIndex) {        }];        return;    }    [MAMapServices sharedServices].apiKey = MAMAP_APPKEY;//高德KEY    _mapView                    = [[MAMapView alloc] init];    _mapView.delegate           = self;    _mapView.showsUserLocation  = YES;    //[_mapView setUserTrackingMode:MAUserTrackingModeFollowWithHeading animated:YES];        point   = [[AMapGeoPoint alloc] init];    _search = [[AMapSearchAPI alloc] initWithSearchKey:MAMAP_APPKEY                                              Delegate:self];    regeoRequest            = [[AMapReGeocodeSearchRequest alloc] init];    regeoRequest.searchType = AMapSearchType_ReGeocode;    regeoRequest.radius     = 50;    regeoRequest.requireExtension = YES;}// 定位回调- (void)mapView:(MAMapView *)mapView didUpdateUserLocation:(MAUserLocation *)userLocation updatingLocation:(BOOL)updatingLocation{    if (updatingLocation) {                point.latitude  = userLocation.coordinate.latitude;        point.longitude = userLocation.coordinate.longitude;                regeoRequest.location = [AMapGeoPoint locationWithLatitude:point.latitude                                                         longitude:point.longitude];        // 发起逆地理编码        [_search AMapReGoecodeSearch:regeoRequest];         _mapView.showsUserLocation  =NO;           }}// 逆地理编码回调- (void)onReGeocodeSearchDone:(AMapReGeocodeSearchRequest *)request response:(AMapReGeocodeSearchResponse *)response{    if (response.regeocode != nil) {               NSString *province=response.regeocode.addressComponent.province;        NSString *city=response.regeocode.addressComponent.city;        NSString *district=response.regeocode.addressComponent.district;        NSString *value=nil;        NSString *key=nil;                NSMutableArray *cityArrayTemp=nil;        for (AreaModel *model in provinceArray) {            if ([model.value isEqualToString:province]) {                cityArrayTemp=[NSMutableArray arrayWithArray:model.children];            }        }        NSMutableArray *districtArryTemp=nil;        if (cityArrayTemp) {            if (city.length>0) {                for (AreaModel *cityModel in cityArrayTemp) {                    if ([cityModel.value isEqualToString:city]) {                        districtArryTemp=[NSMutableArray arrayWithArray:cityModel.children];                    }                }            }            else{                //直辖市                for (AreaModel *cityModel in cityArrayTemp) {                    if ([cityModel.value isEqualToString:district]) {                        value=cityModel.value;                        key=cityModel.key;                    }                }            }        }        if (districtArryTemp) {            for (AreaModel *provinceModel in districtArryTemp) {                if ([provinceModel.value isEqualToString:district]) {                    value=provinceModel.value;                    key=provinceModel.key;                }            }        }        self.keyCode=key;        [self.checkCityButton setTitle:[NSString stringWithFormat:@"%@%@%@",province,city,district] forState:UIControlStateNormal];            }}

#import <UIKit/UIKit.h>@interface AreaPickerCheckView : UIView<UipickerViewDataSource,UIPickerViewDelegate>- (instancetype)initWithFrame:(CGRect)frame andDataSource:(NSArray *)dataSource dismissCompletion:(void (^)(BOOL isCancelClick , NSString *area , NSString *code))completion;@end#import "AreaPickerCheckView.h"#import "AreaModel.h"@interface AreaPickerCheckView(){    NSArray *provinceArray;    NSArray *cityArray;    NSArray *areaArray;    void (^completionBlock)(BOOL isCancelClick , NSString *area , NSString *code);}@property(nonatomic,strong)NSArray *dataSource;@property(nonatomic,strong)UIPickerView *pickerView;@end@implementation AreaPickerCheckView- (instancetype)initWithFrame:(CGRect)frame andDataSource:(NSArray *)dataSource dismissCompletion:(void (^)(BOOL, NSString *, NSString *))completion{    self = [super initWithFrame:frame];    if (self) {        completionBlock = [completion copy];        self.dataSource = dataSource;        [self createUI];// Initialization code    }    return self;}- (void)createUI {        provinceArray = self.dataSource;        AreaModel *model = [self.dataSource firstObject];        cityArray = model.children;        AreaModel *model1 = [model.children firstObject];        areaArray = model1.children;        self.pickerView = [[UIPickerView alloc]initWithFrame:CGRectMake(0, 25, self.frame.size.width, self.frame.size.height-25)];    self.pickerView.dataSource = self;    self.pickerView.delegate = self;    [self addSubview:self.pickerView];            UIButton *confirmBtn = [UIButton buttonWithType:UIButtonTypeCustom];    confirmBtn.frame = CGRectMake(Main_Screen_Width - 50, 5, 40, 20);    [confirmBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [confirmBtn setTitle:@"确定" forState:UIControlStateNormal];    [confirmBtn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];    confirmBtn.tag = 100;    [self addSubview:confirmBtn];        UIButton *cancelBtn = [UIButton buttonWithType:UIButtonTypeCustom];    cancelBtn.frame = CGRectMake(10, 5, 40, 20);    cancelBtn.tag = 101;    [cancelBtn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];    [cancelBtn setTitle:@"取消" forState:UIControlStateNormal];    [cancelBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [self addSubview:cancelBtn];    }#pragma mark dataSouce- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {    return  3;}- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {    if (component == 0) {        return provinceArray.count;    }else if (component == 1) {        return cityArray.count;    }    return areaArray.count;}#pragma mark delegate- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {    AreaModel *model = nil;    if (component == 0) {        model = provinceArray[row];    }else if (component == 1) {        model = cityArray[row];    }else if (component == 2) {        model = areaArray[row];    }    return model.value;}- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {    if (component == 0) {        AreaModel *model = provinceArray[row];        cityArray = model.children;        areaArray = [[cityArray firstObject] children];                [self.pickerView reloadComponent:1];        [self.pickerView reloadComponent:2];    }else if (component == 1) {        AreaModel *model = cityArray[row];        areaArray = model.children;        [self.pickerView reloadComponent:2];    }}- (void)btnClick:(UIButton *)btn {    BOOL isCancel = NO;    switch (btn.tag) {        case 100:                        break;        case 101:            isCancel = YES;            completionBlock(YES,nil,nil);            return;            break;                    default:            break;    }        NSString *str = nil;    NSString *codeStr = nil;        AreaModel *model = provinceArray[[self.pickerView selectedRowInComponent:0]];    str = model.value;    AreaModel *model1 = cityArray[[self.pickerView selectedRowInComponent:1]];    str = [str stringByAppendingString:model1.value];    codeStr = model1.key;    if (areaArray.count > 0) {        AreaModel *model2 = areaArray[[self.pickerView selectedRowInComponent:2]];        str = [str stringByAppendingString:model2.value];        codeStr = model2.key;    }        completionBlock(isCancel,str,codeStr);}@end

@interface CityCheckController ()<CLLocationManagerDelegate,MAMapViewDelegate,AMapSearchDelegate>

{

    NSString *_sessionKey;

    NSString *_code;

    AMapGeoPoint *point;

    AMapReGeocodeSearchRequest *regeoRequest;

    NSArray *provinceArray;

}

@property (weak, nonatomic) IBOutlet UITextField *areaTF;

@property(nonatomic,strong) MAMapView *mapView;

@property(nonatomic,strong) AMapSearchAPI *search;

- (void)viewDidLoad {    [super viewDidLoad];        NSArray *models = [AreaModel objectArrayWithFilename:@"area.plist"];    provinceArray=models;    AreaPickerCheckView *picker = [[AreaPickerCheckView alloc]initWithFrame:CGRectMake(0, 0, Main_Screen_Width, 216) andDataSource:models dismissCompletion:^(BOOL isCancelClick, NSString *area, NSString *code) {        [self.areaTF resignFirstResponder];        if (isCancelClick) {            return;        }else{            self.areaTF.text = area;            _code = code;        }    }];    self.areaTF.inputView = picker;    [self initMap];    }