iOS開發中訪問相冊攝像像頭

源碼下載地址http://download.csdn.net/download/jingjingxujiayou/7270479

在AppDelegate.m文件中

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    self.window.rootViewController = [[dateViewController alloc]init];
    return YES;
}

dateViewController.h

#import 

@interface dateViewController : UIViewController
@property(nonatomic,retain)UIImageView* imageview1;
@property(nonatomic,retain)UIImagePickerController* imagepicker;
@end

dateViewController.m

//
//  dateViewController.m
//  datepick
//
//  Created by 5_2 on 14-4-29.
//  Copyright (c) 2014年 Frountion. All rights reserved.
//

#import "dateViewController.h"

@interface dateViewController ()

@end

@implementation dateViewController
@synthesize imageview1,imagepicker;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view.
    
    //----------1 從網絡加載圖片
    imageview1 = [[UIImageView alloc]initWithFrame:CGRectMake(10, 50, 300, 200)];
    imageview1.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:imageview1];
    NSURL* url = [[NSURL alloc]initWithString:@"https://www.google.com.hk/images/srpr/logo11w.png"];
    NSData* data = [NSData dataWithContentsOfURL:url];
    //把data轉成image
    UIImage* image = [UIImage imageWithData:data];
    //顯示圖片
    imageview1.image = image;
    
    //把圖片轉化為數據
    NSData* imagedata = UIImageJPEGRepresentation(image, 1);
    NSLog(@"%d",imagedata.length);
    
    //保存到相冊裡面，這個可以到模擬器裡的相冊產查看的。
    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
    
    //---------2 相冊的訪問
    
    UIButton *buttonphoto = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    buttonphoto.tag = 100;
    buttonphoto.frame = CGRectMake(50, 250, 80, 50);
    [buttonphoto setTitle:@"訪問相冊" forState:UIControlStateNormal];
    [buttonphoto addTarget:self action:@selector(look:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonphoto];
    
    //---------3 攝像頭的訪問
    UIButton *buttoncamera = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    buttoncamera.tag = 200;
    buttoncamera.frame = CGRectMake(50, 310, 80, 50);
    [buttoncamera setTitle:@"訪問攝像頭" forState:UIControlStateNormal];
    [buttoncamera addTarget:self action:@selector(look:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttoncamera];
    
    
}

/*-(void)look:(UIButton*)button
{
        UIImagePickerController* imagepicker = [[UIImagePickerController alloc]init];
        imagepicker.delegate = self;
        //訪問相冊類型的類型
        //UIImagePickerControllerSourceTypePhotoLibrary,
        //UIImagePickerControllerSourceTypeCamera, =====  訪問攝像頭
        //UIImagePickerControllerSourceTypeSavedPhotosAlbum ======= 只能訪問第一列的圖片
        imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        //以摩擦動畫的方式顯示
        [self presentViewController:imagepicker animated:YES completion:^{
            
        }];

        if (button.tag == 200) {
        //UIImagePickerControllerCameraDeviceFront === 前攝像頭
        //UIImagePickerControllerCameraDeviceRear === 後攝像頭
        BOOL isCamrma = [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
        if (!isCamrma) {
            NSLog(@"沒有攝像頭");
            return;
        }
        //攝像頭
        imagepicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        //允許編輯
        imagepicker.allowsEditing =YES;
    }
}*/

-(void)look:(UIButton*)button
{
    if (button.tag == 100) {
        imagepicker = [[UIImagePickerController alloc]init];
        imagepicker.delegate = self;
        //訪問相冊類型的類型
        //UIImagePickerControllerSourceTypePhotoLibrary,
        //UIImagePickerControllerSourceTypeCamera, =====  訪問攝像頭
        //UIImagePickerControllerSourceTypeSavedPhotosAlbum ======= 只能訪問第一列的圖片
        imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        //以摩擦動畫的方式顯示
        [self presentViewController:imagepicker animated:YES completion:^{
            
        }];

    }else {
        
        //注意攝像頭的訪問需要在真機上進行
        
        //UIImagePickerControllerCameraDeviceFront === 前攝像頭
        //UIImagePickerControllerCameraDeviceRear === 後攝像頭
        BOOL isCamrma = [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
        if (!isCamrma) {
            NSLog(@"沒有攝像頭");
            return;
        }
        //攝像頭
        imagepicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        //允許編輯
        imagepicker.allowsEditing =YES;
    }
}

//---------2 相冊的訪問
#pragma mark - UIImagePickerControllerDelegate


//相冊選中之後調用
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    //UIImagePickerControllerOriginalImage === 取原始圖片
    //UIImagePickerControllerEditedImage === 去編輯以後的圖片
    UIImage* image = [info objectForKey:UIImagePickerControllerEditedImage];
    imageview1.image = image;
    NSLog(@"info = %@",info);
    [picker dismissViewControllerAnimated:YES completion:nil];
}
//取消按鈕的點擊事件
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [picker dismissViewControllerAnimated:YES completion:NULL];
}
//將圖片保存
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    NSLog(@"error = %@",error);
}



- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end