高德地图---天气搜索/逆向地理编码/定位

在《高德地图---线路规划查询/正向地理编码/地图覆盖物》这一篇里面本来想使用高德搜索的V3.0.0版本一直配置不好。今天又想起来弄这个了，去官方的论坛看了，知道了怎么使用了。

这一篇主要是逆向地理编码和天气搜索。逆向地理编码：经纬度 ----> 详细地址。

搜索天气需要什么？需要用户所在的城市名。

那么些代码就可以这么一个思路写下来：

用户位置得到用户经纬度 --- >  逆向地理编码获取城市名 --- > 发起天气搜索得到实时天气。

首先看一张效果图

直接上代码了，代码没什么难的，理清思路就好了。关于KVO键值监听和通知部分只是为了在获取到相应的结果后做下一步的事情。

//
//  ViewController.m
//  GaodeWeather
//
//  Created by HGDQ on 15/10/12.
//  Copyright (c) 2015年 HGDQ. All rights reserved.
//

/**
 *  高德地图
 *  2D地图SDK V3.1.0
 *	搜索SDK V3.0.0
 */


#import "ViewController.h"
#import 
#import 

#define APIKEY  @"afa1d16dc93c26faee558a71cdc5655b"


@interface ViewController ()

@property (nonatomic,strong)AMapSearchAPI *search;
@property (nonatomic,strong)AMapSearchAPI *Geosearch;
@property (nonatomic,strong)MAMapView *mapView;
@property (nonatomic,assign)float latitude;
@property (nonatomic,assign)float longitude;
@property (nonatomic,copy)NSString * cityName;


@end

@implementation ViewController
/**
 *  注册通知
 *
 *  @param animated animated description
 */
- (void)viewWillAppear:(BOOL)animated{
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(weatherSearch) name:@"weatherSearch" object:nil];
}

- (void)viewDidLoad {
	[super viewDidLoad];
	//增加一个longitude的键值监听
	[self addObserver:self forKeyPath:@"longitude" options:NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld context:nil];
	
	[self setUserLocation];
	// Do any additional setup after loading the view, typically from a nib.
}
#pragma mark - 用户定位
- (void)setUserLocation{
	[MAMapServices sharedServices].apiKey = APIKEY;
	self.mapView = [[MAMapView alloc] init];
	self.mapView.delegate = self;
	//允许用户定位
	self.mapView.showsUserLocation = YES;
	[self.view addSubview:self.mapView];
}
/**
 *  用户定位回调事件
 *	这个方法会不断的调用  所以里面做了只执行一次处理
 *  @param mapView          mapView description
 *  @param userLocation     userLocation 用户位置
 *  @param updatingLocation updatingLocation description
 */
- (void)mapView:(MAMapView *)mapView didUpdateUserLocation:(MAUserLocation *)userLocation updatingLocation:(BOOL)updatingLocation{
	if(updatingLocation)
	{
		ViewController *wself = self;
		static dispatch_once_t one;
		dispatch_once(&one, ^{
			wself.latitude = userLocation.coordinate.latitude;
			wself.longitude = userLocation.coordinate.longitude;
		});
	}
}
#pragma mark - 天气搜索
/**
 *  根据城市名搜索天气
 *
 *  @param cityName 天气搜索需要的cityName
 */
- (void)setWeatherWithCityname:(NSString *)cityName{
	//配置用户Key
	[AMapSearchServices sharedServices].apiKey = APIKEY;
 
	//初始化检索对象
	self.search = [[AMapSearchAPI alloc] init];
	self.search.delegate = self;
	
	//构造AMapWeatherSearchRequest对象，配置查询参数
	AMapWeatherSearchRequest *request = [[AMapWeatherSearchRequest alloc] init];
	request.city = cityName;
	request.type = AMapWeatherTypeLive; //AMapWeatherTypeLive为实时天气；AMapWeatherTypeForecase为预报天气
	//发起行政区划查询
	[self.search AMapWeatherSearch:request];
}
- (void)onWeatherSearchDone:(AMapWeatherSearchRequest *)request response:(AMapWeatherSearchResponse *)response{
	if(request.type == AMapWeatherTypeLive){
		if (response.lives.count == 0) {
			return ;
		}
		AMapLocalWeatherLive *live = (AMapLocalWeatherLive *)response.lives[0];
		UILabel *showLabel = [[UILabel alloc] init];
		showLabel.frame = CGRectMake(10, 20, 300, 400);
		showLabel.numberOfLines = 0;
		[self.view addSubview:showLabel];
		
		NSString *showStr = [NSString stringWithFormat:@"地区编码:%@\n省份名:%@\n城市名:%@\n天气现象:%@\n实时温度:%@\n风向:%@\n风力:%@\n空气湿度:%@\n数据发布时间:%@\n",live.adcode,live.province,live.city,live.weather,live.temperature,live.windDirection,live.windPower,live.humidity,live.reportTime];
		showLabel.text = showStr;
		
			NSLog(@"天气 = %@",live.adcode);
			NSLog(@"天气 = %@",live.province);
			NSLog(@"天气 = %@",live.city);
			NSLog(@"天气 = %@",live.weather);
			NSLog(@"天气 = %@",live.temperature);
			NSLog(@"天气 = %@",live.windDirection);
			NSLog(@"天气 = %@",live.windPower);
			NSLog(@"天气 = %@",live.humidity);
			NSLog(@"天气 = %@",live.reportTime);
	}
}
#pragma mark - 逆向地理编码
/**
 *  逆向地理编码
 *
 *  @param latitude  逆向地理编码搜索需要的latitude
 *  @param longitude 逆向地理编码搜索需要的longitude
 */
- (void)setGeosearchWithLatitude:(float)latitude longitude:(float)longitude{
	//配置用户Key
	[AMapSearchServices sharedServices].apiKey = APIKEY;
 
	//初始化检索对象
	self.Geosearch = [[AMapSearchAPI alloc] init];
	self.Geosearch.delegate = self;
	
	//构造AMapWeatherSearchRequest对象，配置查询参数
	AMapReGeocodeSearchRequest *request = [[AMapReGeocodeSearchRequest alloc] init];
	request.location = [AMapGeoPoint locationWithLatitude:latitude longitude:longitude];
	//发起行政区划查询
	[self.Geosearch AMapReGoecodeSearch:request];
}
/**
 *  逆向地理编码回调方法
 *
 *  @param request  request 搜索请求
 *  @param response response 搜索返回
 */
- (void)onReGeocodeSearchDone:(AMapReGeocodeSearchRequest *)request response:(AMapReGeocodeSearchResponse *)response{
	if (response.regeocode != nil) {
		AMapReGeocode *regeocode = response.regeocode;
		AMapAddressComponent *addressComponent = regeocode.addressComponent;
		self.cityName = addressComponent.city;
		[[NSNotificationCenter defaultCenter] postNotificationName:@"weatherSearch" object:nil];
	}
}
#pragma mark - KVO键值监听回调方法
/**
 *  KVO键值监听回调方法
 *  逆向地理编码搜素
 *  @param keyPath 键值
 *  @param object  object description
 *  @param change  change description
 *  @param context context description
 */
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{
	[self setGeosearchWithLatitude:self.latitude longitude:self.longitude];
}
#pragma mark - 通知事件
/**
 *  发起天气搜索
 */
- (void)weatherSearch{
	[self setWeatherWithCityname:self.cityName];
}
- (void)didReceiveMemoryWarning {
	[super didReceiveMemoryWarning];
	// Dispose of any resources that can be recreated.
}

@end

工程源码下载 https://github.com/zhuming3834/GaodeWeather