//

 //  ViewController.m

 //  IOS_0301_相册和相机

 //

 //  Created by ma c on 16/3/1.

 //  Copyright © 2016年 博文科技. All rights reserved.

 //

 #import "ViewController.h"

 @interface ViewController ()<UIActionSheetDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate>

 @property (nonatomic, strong) UIImageView *chooseImgView;

 @property (nonatomic, strong) UIButton *btnOpenCamera;

 @end

 @implementation ViewController

 - (void)viewDidLoad {

     [super viewDidLoad];

     self.chooseImgView = [[UIImageView alloc] initWithFrame:CGRectMake(, , , )];

     self.chooseImgView.backgroundColor = [UIColor cyanColor];

     [self.view addSubview:self.chooseImgView];

     self.btnOpenCamera = [UIButton buttonWithType:UIButtonTypeCustom];

     [self.btnOpenCamera setFrame:CGRectMake(, , , )];

     [self.btnOpenCamera setBackgroundColor:[UIColor redColor]];

     [self.btnOpenCamera setTitle:@"相册相机" forState:UIControlStateNormal];

     [self.view addSubview:self.btnOpenCamera];

     [self.btnOpenCamera addTarget:self action:@selector(openCamera) forControlEvents:UIControlEventTouchUpInside];

 }

 /*

  UIImagePickerController(图片拾取器)

  能够根据不同的指令，选择开启相机或相册

  ps:

  1.使用图片拾取器时，实现两个协议

    UIImagePickerControllerDelegate

    UINavigationControllerDelegate

  2.判断当前设备是否存在相机

  */

 - (void)openCamera

 {

     NSLog(@"打开相册");

     UIActionSheet *actionSheeet = [[UIActionSheet alloc] initWithTitle:@"开启系统相机|相册" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"相机" otherButtonTitles:@"相册", nil];

     [actionSheeet showInView:self.view];

 }

 - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

 {

     switch (buttonIndex) {

         case :

         {

             NSLog(@"相机");

             //设置图片拾取器

             UIImagePickerController *imgPicker = [[UIImagePickerController alloc] init];

             //设置代理

             imgPicker.delegate = self;

             //设置图片拾取器类型

             imgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;

             //是否允许图片编辑

             imgPicker.allowsEditing = YES;

             //唤醒相机

             [self presentViewController:imgPicker animated:YES completion:nil];

         }

             break;

         case :

         {

             NSLog(@"相册");

             //设置图片拾取器

             UIImagePickerController *imgPicker = [[UIImagePickerController alloc] init];

             //设置代理

             imgPicker.delegate = self;

             //设置图片拾取器类型

             imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

             //是否允许图片编辑

             imgPicker.allowsEditing = YES;

             //唤醒相机

             [self presentViewController:imgPicker animated:YES completion:nil];

         }

             break;

         default:

             break;

     }

 }

 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info

 {

     //完成获取图片的操作

     NSLog(@"%@",info);

     //获取编辑后的图片

     UIImage *chooseImage = [info objectForKey:@"UIImagePickerControllerEditedImage"];

     NSString *imageName = [info objectForKey:@"UIImagePickerControllerReferenceURL"];

     NSLog(@"%@",imageName);

     self.chooseImgView.image = chooseImage;

     //将图片从系统相册中取出，并保存到沙河中

     NSString *homePath = [NSHomeDirectory() stringByAppendingPathComponent:@"/Documents"];

     NSString *realPath = [homePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%d",arc4random()%]];

     NSLog(@"%@",realPath);

     [UIImageJPEGRepresentation(chooseImage, 1.0f) writeToFile:realPath atomically:YES];

     [self dismissViewControllerAnimated:YES completion:nil];

 }

 - (void)didReceiveMemoryWarning {

     [super didReceiveMemoryWarning];

     // Dispose of any resources that can be recreated.

 }

 @end