iOS,多媒体,地图相关

2022-12-09 17:09:59

1.本地音频播放

2.本地视频播放

3.使用UIImagePickerController摄像头拍照,录像,照片库浏览

4.使用AVFunction,AVCaptureVideoDataOutput实时获得视频流照片,开关闪光灯

5.高德地图使用和定位

6.高德地图,地理编码定位和反地理编码

本地音频播放

//ViewController.m文件

//导入头文件

#import <AVFoundation/AVFoundation.h>

#import <MediaPlayer/MediaPlayer.h>

import "ViewController.h"

@interface ViewController ()

//AVAudioPlayer要为全局变量才能播放

@property (strong,nonatomic) AVAudioPlayer *audioPlayer;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];

    [self.navigationItem setTitle:@"音频"];

    //播放音频；注意：如果点击了stop,那么一定要让播放器重新创建，否则会出现一些莫名其面的问题

   [self.getAudioPlayer play];

}

/**

 *创建音频播放器

 *return 音频播放器

 */

-(AVAudioPlayer *)getAudioPlayer{

    NSString *path=[[NSBundle mainBundle] pathForResource:@"爱的太迟"ofType:@"mp3"];

    NSURL *url=[NSURL fileURLWithPath:path];

    //创建一个播放器

    _audioPlayer=[[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];

    //音量0.0-1.0之间

    _audioPlayer.volume=0.2;

    //循环次数

    _audioPlayer.numberOfLoops=;

    //播放位置

    _audioPlayer.currentTime=0.0;

    //声道数

    NSUInteger channels=_audioPlayer.numberOfChannels;//只读属性

    //持续时间

    NSTimeInterval duration=_audioPlayer.duration;//获取持续时间

    //分配播放所需的资源，并将其加入内部播放队列

    [_audioPlayer prepareToPlay];

    return _audioPlayer;

}

@end

本地视频播放

//ViewController.m文件

//导入头文件

#import <AVFoundation/AVFoundation.h>

#import <MediaPlayer/MediaPlayer.h>

#import "ViewController.h"

@interface ViewController ()

//视频播放控制器

@property (strong,nonatomic) MPMoviePlayerController *moviePlayer;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];

    [self.navigationItem setTitle:@"视频"];

    //播放视频

    [self.getMoviePlayer play];

}

/**

 *创建视频控制器

 *return 视频控制器

 */

-(MPMoviePlayerController *)getMoviePlayer{

    NSString *path=[[NSBundle mainBundle] pathForResource:@"DotA2官方宣传片"ofType:@"mp4"];

    NSURL *url=[NSURL fileURLWithPath:path];

    _moviePlayer=[[MPMoviePlayerController alloc] initWithContentURL:url];

    _moviePlayer.view.frame=self.view.frame;

    //自动调整长宽

 _moviePlayer.view.autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;

    [self.view addSubview:_moviePlayer.view];

    return _moviePlayer;

}

@end

//AVPlayerLayer播放视频

   NSString *path=[[NSBundle mainBundle] pathForResource:@"DotA2官方宣传片" ofType:@"mp4"];

    NSURL *videoURL=[NSURL fileURLWithPath:path];

    AVPlayer *player=[AVPlayer playerWithURL:videoURL];

    AVPlayerLayer *layer=[AVPlayerLayer playerLayerWithPlayer:player];

    layer.videoGravity=AVLayerVideoGravityResizeAspect;

    layer.frame=CGRectMake(-, , , );

    layer.backgroundColor=[[UIColor redColor]CGColor];

    [self.view.layer addSublayer:layer];

    [player play];

使用UIImagePickerController摄像头拍照,录像,照片库浏览

//ViewController.m文件

//导入头文件，(NSString*)kUTTypeMovie等类型才能引用

#import <MobileCoreServices/MobileCoreServices.h>

#import "ViewController.h"

@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>

//UIImagePickerController拍照和视频录制

@property (strong,nonatomic) UIImagePickerController *imagePicker;

//类型1是拍照，2是录像

@property (assign,nonatomic)  int pickerType;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];

    self.navigationItem.title=@"拍照视频";

    _pickerType=;

   [self presentViewController:self.startImagePicker.view animated:YES completion:nil];

}

/**

 *创建UIImagePickerController

 *return UIImagePickerController

 */

-(UIImagePickerController *)startImagePicker{

    if (!_imagePicker) {

        _imagePicker=[[UIImagePickerController alloc] init];

        //设置imagePicker的来源为摄像头

        _imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;

        //设置使用后置摄像头

        _imagePicker.cameraDevice=UIImagePickerControllerCameraDeviceRear;

        if(_pickerType==){

            //设置摄像头模式为拍照

         _imagePicker.cameraCaptureMode=UIImagePickerControllerCameraCaptureModePhoto;

        }else if (_pickerType==){

            //视频带有声音模式

            _imagePicker.mediaTypes=@[(NSString*)kUTTypeMovie];

            //设置视频质量

          _imagePicker.videoQuality=UIImagePickerControllerQualityType640x480;

            //设置摄像头模式为录像模式

          _imagePicker.cameraCaptureMode=UIImagePickerControllerCameraCaptureModeVideo;

        }

        //允许编辑

        _imagePicker.allowsEditing=YES;

        //设置代理

        _imagePicker.delegate=self;

    }

    return _imagePicker;

}

//UIImagePickerControllerDelegate代理，完成时

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

    //获得类型是拍照还是录像

    NSString *mediaType=[info objectForKey:UIImagePickerControllerMediaType];

    //如果是拍照

    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {

        UIImage *image;

        //如果允许编辑则获得编辑后的照片，否则获取原始图片

        if (self.imagePicker.allowsEditing) {

            image=[info objectForKey:UIImagePickerControllerEditedImage];

        }else{

            image=[info objectForKey:UIImagePickerControllerOriginalImage];

        }

        @try {

            UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

        }

        @catch (NSException *exception) {

            UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"完成"message:@"照片保存失败" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];

            [alert show];

        }

    }else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]){

        NSURL *url=[info objectForKey:UIImagePickerControllerMediaURL];

        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum([url path])) {

            //视频保存到相簿

            UISaveVideoAtPathToSavedPhotosAlbum([url path], self, @selector(video:didFinishSavingWithError:contextInfo:), nil);

        }

    }

}

//视频保存后的回调

- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{

    if (error) {

        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"完成"message:error.localizedDescription delegate:nil cancelButtonTitle:@"OK"otherButtonTitles:nil];

        [alert show];

    }else{

        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"完成" message:@"视频保存成功." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];

        [alert show];

    }

}

@end

//ViewController.m文件

//照片库浏览

#import "ViewController.h"

@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>

@property (nonatomic,strong) UIImagePickerController *imagePicker;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];

    self.navigationItem.title=@"照片浏览";

    [self presentViewController:[self.getImagePickerLibrary view] animated:YES completion:nil];

}

//创建UIImagePickerController

-(UIImagePickerController *)getImagePickerLibrary{

    _imagePicker=[[UIImagePickerController alloc] init];

    //设置模式为浏览图片库

    _imagePicker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;

    //设置代理

    _imagePicker.delegate=self;

    return _imagePicker;

}

//实现完成时代理

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

    //获取没更改的照片

    UIImage *img=[info objectForKey:UIImagePickerControllerOriginalImage];

//    将图片装换为base64的data，然后转成UTF-8格式,图片质量 0.0 to 1.0.

    NSString *base64Str=[UIImageJPEGRepresentation(img, 0.5) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

    NSString *utf8Str=[NSString stringWithUTF8String:[base64Str UTF8String]];

    //base64转UIImage

    NSData *data=[[NSData alloc] initWithBase64EncodedString:utf8Str options:NSDataBase64DecodingIgnoreUnknownCharacters];

    UIImage *base64Image=[UIImage imageWithData:data];

    UIImageView *imgView=[[UIImageView alloc] initWithFrame:self.view.bounds];

    imgView.image=base64Image;

    [self.view addSubview:imgView];

}

@end

使用AVFunction,AVCaptureVideoDataOutput实时获得视频流照片,开关闪光灯

//IdentifyViewController.m文件

//

//  IdentifyViewController.m

//

//

//  Created by Vie on 15/11/19.

//

//

#import "TKIdentifyViewController.h"

#import <AVFoundation/AVFoundation.h>

@interface TKIdentifyViewController ()<AVCaptureVideoDataOutputSampleBufferDelegate>

@property(nonatomic,strong)AVCaptureSession *captureSession;//负责输入和输出设备之间的数据传递

@property(nonatomic,strong) AVCaptureDeviceInput*captureDeviceInput;//AVCaptureDevice输入流

@property(nonatomic,strong)AVCaptureVideoPreviewLayer*captureVideoPreviewLayer;//相机拍摄预览图层

@property(nonatomic,strong) AVCaptureVideoDataOutput *dataOutPut;

@property(nonatomic,strong) AVCaptureDevice *captureDevice;//输入设备

@end

@implementation TKIdentifyViewController

- (void)viewDidLoad {

    [super viewDidLoad];

}

-(void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];

    //创建会话

    self.captureSession=[[AVCaptureSession alloc] init];

    //设置分辨率

    if ([ self.captureSessioncanSetSessionPreset:AVCaptureSessionPreset1280x720]) {

      self.captureSession.sessionPreset=AVCaptureSessionPreset1280x720;

    }else{

     self.captureSession.sessionPreset=AVCaptureSessionPresetiFrame960x540;

    }

   //获得输入设备

    self.captureDevice=[self getCameraDeviceWithPosition:AVCaptureDevicePositionBack];//取得后置摄像头

    if (!self.captureDevice) {

        NSLog(@"取得后置摄像头时出现问题.");

        return;

    }

    NSError *error=nil;

    //根据输入设备初始化输入对象，用于获得输入数据

    self.captureDeviceInput=[AVCaptureDeviceInputdeviceInputWithDevice:self.captureDevice error:&error];

    if (error) {

        NSLog(@"取得设备输入对象时出错，错误原因：%@",error.localizedDescription);

        return;

    }

    //videoDataOutput对象

    self.dataOutPut=[[AVCaptureVideoDataOutput alloc] init];

    dispatch_queue_t queue=dispatch_queue_create("myQueue", NULL);

    [self.dataOutPut setSampleBufferDelegate:self queue:queue];

    self.dataOutPut.videoSettings=[NSDictionary dictionaryWithObject:[NSNumbernumberWithInt:kCVPixelFormatType_32BGRA] forKey:(id)kCVPixelBufferPixelFormatTypeKey];

    //将输入设备添加到会话中

    if([self.captureSession canAddInput:self.captureDeviceInput]){

        [self.captureSession addInput:self.captureDeviceInput];

    }

    //将设备输出添加到会话中

    if ([self.captureSession canAddOutput:self.dataOutPut]) {

         [self.captureSession addOutput:self.dataOutPut];

    }

    //创建视频预览层，用于实时展示摄像头状态

    self.captureVideoPreviewLayer=[[AVCaptureVideoPreviewLayer alloc] initWithSession:self.captureSession];

    self.captureVideoPreviewLayer.frame=self.view.layer.bounds;

    //填充模式

 self.captureVideoPreviewLayer.videoGravity=AVLayerVideoGravityResizeAspectFill;

    //将视频预览层添加到界面中

    [self.view.layer insertSublayer:self.captureVideoPreviewLayer atIndex:];

}

-(void)viewDidAppear:(BOOL)animated{

    [super viewDidAppear:animated];

    [self.captureSession startRunning];

}

-(void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection{

    UIImage  *img=[self imageFromSampleBuffer:sampleBuffer];

}

//用AVFoundation捕捉视频帧，很多时候需要把某一帧转换成UIImage，用此函数：

- (UIImage *) imageFromSampleBuffer:(CMSampleBufferRef) sampleBuffer {

    // 为媒体数据设置一个CMSampleBuffer的Core Video图像缓存对象

    CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);

    // 锁定pixel buffer的基地址

    CVPixelBufferLockBaseAddress(imageBuffer, );

    // 得到pixel buffer的基地址

    void *baseAddress = CVPixelBufferGetBaseAddress(imageBuffer);

    // 得到pixel buffer的行字节数

    size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer);

    // 得到pixel buffer的宽和高

    size_t width = CVPixelBufferGetWidth(imageBuffer);

    size_t height = CVPixelBufferGetHeight(imageBuffer);

    // 创建一个依赖于设备的RGB颜色空间

    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();

    // 用抽样缓存的数据创建一个位图格式的图形上下文（graphics context）对象

    CGContextRef context = CGBitmapContextCreate(baseAddress, width, height, ,bytesPerRow, colorSpace, kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);

    // 根据这个位图context中的像素数据创建一个Quartz image对象

    CGImageRef quartzImage = CGBitmapContextCreateImage(context);

    // 解锁pixel buffer

    CVPixelBufferUnlockBaseAddress(imageBuffer,);

    // 释放context和颜色空间

    CGContextRelease(context);

    CGColorSpaceRelease(colorSpace);

    // 用Quartz image创建一个UIImage对象image

    UIImage *image = [UIImage imageWithCGImage:quartzImage];

    // 释放Quartz image对象

    CGImageRelease(quartzImage);

    return (image);

}

/**

 *  取得指定位置的摄像头

 *

 *  @param position 摄像头位置

 *

 *  @return 摄像头设备

 */

-(AVCaptureDevice *)getCameraDeviceWithPosition:(AVCaptureDevicePosition)position{

    NSArray *cameras= [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];

    for (AVCaptureDevice *camera in cameras) {

        if ([camera position]==position) {

            return camera;

        }

    }

    return nil;

}

//开关闪光灯

-(void)openOrCloseTorch:(UIButton *)sender{

    //请求独占设备访问性能，后面打开或关闭闪光灯

    [self.captureDevice lockForConfiguration:nil];

    if(self.captureDevice.torchMode==AVCaptureTorchModeOff){

        //开启闪光灯

        [self.captureDevice setTorchMode:AVCaptureTorchModeOn];

    }else{

        //关闭闪光灯

        [self.captureDevice setTorchMode:AVCaptureTorchModeOff];

    }

    //当打开或关闭闪光灯时，放弃设备独占权

    [self.captureDevice unlockForConfiguration];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end

高德地图使用和定位

高德定位失败的原因可能是未对iOS8做适配

解决方法是:

1.工程的info.plist添加NSLocationWhenInUseDescription，NSLocationAlwaysUsageDescription字段，不同的字段对应的方法不同

2.在AppDelegate.m中声明个CLLocationManager私有变量，代码如下:

@interface AppDelegate()

{

    UINavigationController *_navController;

    CLLocationManager      *_locationmanager;

}

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

    [UIApplication sharedApplication].idleTimerDisabled = TRUE;

    _locationmanager = [[CLLocationManager alloc] init];

    [_locationmanager requestAlwaysAuthorization];        //NSLocationAlwaysUsageDescription

    [_locationmanager requestWhenInUseAuthorization];     //NSLocationWhenInUseDescription

    _locationmanager.delegate = self;

}

//ViewController.h文件

#import <UIKit/UIKit.h>

#import <MapKit/MapKit.h>

@interface ViewController : UIViewController<MKMapViewDelegate,CLLocationManagerDelegate>

@end

//ViewController.m文件

//

//  ViewController.m

//  MapDemo

//

//  Created by Vie on 15/7/27.

//  Copyright (c) 2015年 Vie. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@property (strong,nonatomic) MKMapView *mapView;

@property (strong,nonatomic) CLLocationManager *locationManager;

@end

@implementation ViewController

@synthesize mapView=_mapView,locationManager=_locationManager;

- (void)viewDidLoad {

    [super viewDidLoad];

   self.navigationItem.title=@"Map";

    [self.view setBackgroundColor:[UIColor whiteColor]];

    _mapView=[[MKMapView alloc] initWithFrame:CGRectMake(, , self.view.frame.size.width, self.view.frame.size.height)];

    //显示用户当前的坐标，打开地图有相应的提升

    _mapView.showsUserLocation=YES;

    //设置用户跟踪模式为跟踪用户位置和方向变化

    [_mapView setUserTrackingMode:MKUserTrackingModeFollowWithHeading animated:YES];

    //地图类型，混合地图(默认标注地图)

    //_mapView.mapType=MKMapTypeHybrid;

    //设置地图的代理

    _mapView.delegate=self;

    //定位管理器

    _locationManager=[[CLLocationManager alloc] init];

    //设置代理

    _locationManager.delegate=self;

    //设置定位精度

    _locationManager.desiredAccuracy=kCLLocationAccuracyBest;

    //定位频率，每隔多少米定位一次

    //十米定位一次

    CLLocationDistance distance=10.0;

    _locationManager.distanceFilter=distance;

    //启动跟踪定位

    [_locationManager startUpdatingLocation];

    //启动方向定位

    [_locationManager startUpdatingHeading];

    [self.view addSubview:_mapView];

     //调用地理编码定位方法

    [self positioningName:@"北京市"];

    //调用反地理编码定位方法

    CLLocationCoordinate2D theCoordinate;

    //纬度

    theCoordinate.latitude=22.541832;

    //经度

    theCoordinate.longitude=113.945930;

    [self getNameLocation:theCoordinate];

   }

//地理编码定位(根据名称获取地址坐标)

-(void)positioningName:(NSString *)strName{

     CLGeocoder *geocoder=[[CLGeocoder alloc] init];

    //根据“北京市”进行地理编码

    [geocoder geocodeAddressString:strName completionHandler:^(NSArray *placemarks, NSError *error) {

        //获取第一个地标

        CLPlacemark *clPlacemark=[placemarks firstObject];

        CLLocationCoordinate2D coordinate=clPlacemark.location.coordinate;

         NSLog(@"经度：%f,纬度：%f",coordinate.longitude,coordinate.latitude);

//        //定位地标转化为地图的地标

//        MKPlacemark *mkplacemark=[[MKPlacemark alloc]initWithPlacemark:clPlacemark];

//        NSDictionary *options=@{MKLaunchOptionsMapTypeKey:@(MKMapTypeStandard)};

//        MKMapItem *mapItem=[[MKMapItem alloc]initWithPlacemark:mkplacemark];

//        [mapItem openInMapsWithLaunchOptions:options];

    }];

}

//反地理编码(根据坐标获取地名)

-(void)getNameLocation:(CLLocationCoordinate2D)theCoordinate{

    CLLocation *location=[[CLLocation alloc] initWithLatitude:theCoordinate.latitude longitude:theCoordinate.longitude];

    CLGeocoder *geocoder=[[CLGeocoder alloc]init];

    [geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {

        CLPlacemark *placemark=[placemarks firstObject];

         NSDictionary *addressDic=placemark.addressDictionary;

        NSLog(@"详细信息:%@",placemark.addressDictionary);

    }];

}

//方向位置改变代理

-(void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading{

    CGFloat heading=newHeading.magneticHeading;

    NSLog(@"%f",heading);

}

//响应注解按钮轻击事件

-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control{

    MKPointAnnotation *annotation=view.annotation;

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"https://www.baidu.com"]];

}

//添加注解后，一点构建视图并将其添加到地图上就会通知该委托

-(void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray<MKAnnotationView *> *)views{

    for (MKPinAnnotationView *mkaview in views) {

        if ([mkaview.annotation.title isEqualToString:@"深圳思迪"]) {

            //设置图钉颜色，以及是否显示一个按钮

            mkaview.pinColor=MKPinAnnotationColorRed;

            UIButton *button=[UIButton buttonWithType:UIButtonTypeDetailDisclosure];

            mkaview.rightCalloutAccessoryView=button;

            //设置提示左侧图片

            UIImageView *imgView=[[UIImageView alloc] initWithFrame:CGRectMake(, , , )];

            imgView.image=[UIImage imageNamed:@"15.jpg"];

            mkaview.leftCalloutAccessoryView=imgView;

        }

    }

}

//位置改变代理

-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{

    CLLocation *location=[locations firstObject];//取出第一个位置

    CLLocationCoordinate2D coordinate=location.coordinate;//位置坐标

    NSLog(@"经度：%f,纬度：%f,海拔：%f,航向：%f,行走速度：%f",coordinate.longitude,coordinate.latitude,location.altitude,location.course,location.speed);

    //定义经纬坐标(标注点)

    CLLocationCoordinate2D theCoordinate;

    //纬度

    theCoordinate.latitude=coordinate.latitude;

    //经度

    theCoordinate.longitude=coordinate.longitude;

    //定义地图显示的范围,经纬度

    MKCoordinateSpan theSpan;

    //纬度

    theSpan.latitudeDelta=0.1;

    //经度

    theSpan.longitudeDelta=0.1;

    //定义一个区域(用定义的经纬度和范围来定义)

    MKCoordinateRegion theRegion;

    theRegion.center=theCoordinate;

    theRegion.span=theSpan;

    //在地图上显示

    [_mapView setRegion:theRegion];

    //用户位置注解，点击定位的标识展示

    _mapView.userLocation.title=@"Me";

    _mapView.userLocation.subtitle=[NSString stringWithFormat:@"经度：%f,纬度：%f",coordinate.longitude,coordinate.latitude];

    //移除原来的注释(大头针)

    [_mapView removeAnnotations:_mapView.annotations];

    //注释对象位于指定的点(大头针)

    MKPointAnnotation *annotaion=[[MKPointAnnotation alloc]init];

    //注释点得位置

    annotaion.coordinate=theCoordinate;

    //注释点得主标题

    annotaion.title=@"深圳思迪";

    //副标题

    annotaion.subtitle=@"致力于金融服务的IT公司";

    //地图上添加注释

    [_mapView addAnnotation:annotaion];

    //如果不需要实时定位，使用完即使关闭定位服务

//    [_locationManager stopUpdatingLocation];

}

@end

高德地图,地理编码定位和反地理编码

//地理编码定位(根据名称获取地址坐标)

-(void)positioningName:(NSString *)strName{

     CLGeocoder *geocoder=[[CLGeocoder alloc] init];

    //根据“北京市”进行地理编码

    [geocoder geocodeAddressString:@"北京市" completionHandler:^(NSArray*placemarks, NSError *error) {

        //获取第一个地标

        CLPlacemark *clPlacemark=[placemarks firstObject];

        //定位地标转化为地图的地标

        MKPlacemark *mkplacemark=[[MKPlacemarkalloc]initWithPlacemark:clPlacemark];

        NSDictionary *options=@{MKLaunchOptionsMapTypeKey:@(MKMapTypeStandard)};

        MKMapItem *mapItem=[[MKMapItem alloc]initWithPlacemark:mkplacemark];

        [mapItem openInMapsWithLaunchOptions:options];

    }];

}

//反地理编码(根据坐标获取地名)

-(void)getNameLocation:(CLLocationCoordinate2D)theCoordinate{

    CLLocation *location=[[CLLocation alloc] initWithLatitude:theCoordinate.latitude longitude:theCoordinate.longitude];

    CLGeocoder *geocoder=[[CLGeocoder alloc]init];

    [geocoder reverseGeocodeLocation:location completionHandler:^(NSArray*placemarks, NSError *error) {

        CLPlacemark *placemark=[placemarks firstObject];

         NSDictionary *addressDic=placemark.addressDictionary;

        NSLog(@"详细信息:%@",placemark.addressDictionary);

    }];

}

//调用地理编码定位方法

[self positioningName:@"BEIJING"];

//调用反地理编码定位方法

CLLocationCoordinate2D theCoordinate;

//纬度

theCoordinate.latitude=39.54;

//经度

theCoordinate.longitude=116.28;

[self getNameLocation:theCoordinate];

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