iOS开发中访问相册摄像像头

源码下载地址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 <UIKit/UIKit.h>

@interface dateViewController : UIViewController<UIImagePickerControllerDelegate,UINavigationBarDelegate>
@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 从网络加载图片
    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转成image
    UIImage* image = [UIImage imageWithData:data];
    //显示图片
    imageview1.image = image;

    //把图片转化为数据
    NSData* imagedata = UIImageJPEGRepresentation(image, 1);
    NSLog(@"%d",imagedata.length);

    //保存到相册里面，这个可以到模拟器里的相册产查看的。
    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);

    //---------2 相册的访问

    UIButton *buttonphoto = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    buttonphoto.tag = 100;
    buttonphoto.frame = CGRectMake(50, 250, 80, 50);
    [buttonphoto setTitle:@"访问相册" forState:UIControlStateNormal];
    [buttonphoto addTarget:self action:@selector(look:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonphoto];

    //---------3 摄像头的访问
    UIButton *buttoncamera = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    buttoncamera.tag = 200;
    buttoncamera.frame = CGRectMake(50, 310, 80, 50);
    [buttoncamera setTitle:@"访问摄像头" 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;
        //访问相册类型的类型
        //UIImagePickerControllerSourceTypePhotoLibrary,
        //UIImagePickerControllerSourceTypeCamera, =====  访问摄像头
        //UIImagePickerControllerSourceTypeSavedPhotosAlbum ======= 只能访问第一列的图片
        imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        //以摩擦动画的方式显示
        [self presentViewController:imagepicker animated:YES completion:^{

        }];

        if (button.tag == 200) {
        //UIImagePickerControllerCameraDeviceFront === 前摄像头
        //UIImagePickerControllerCameraDeviceRear === 后摄像头
        BOOL isCamrma = [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
        if (!isCamrma) {
            NSLog(@"没有摄像头");
            return;
        }
        //摄像头
        imagepicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        //允许编辑
        imagepicker.allowsEditing =YES;
    }
}*/

-(void)look:(UIButton*)button
{
    if (button.tag == 100) {
        imagepicker = [[UIImagePickerController alloc]init];
        imagepicker.delegate = self;
        //访问相册类型的类型
        //UIImagePickerControllerSourceTypePhotoLibrary,
        //UIImagePickerControllerSourceTypeCamera, =====  访问摄像头
        //UIImagePickerControllerSourceTypeSavedPhotosAlbum ======= 只能访问第一列的图片
        imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        //以摩擦动画的方式显示
        [self presentViewController:imagepicker animated:YES completion:^{

        }];

    }else {

        //注意摄像头的访问需要在真机上进行

        //UIImagePickerControllerCameraDeviceFront === 前摄像头
        //UIImagePickerControllerCameraDeviceRear === 后摄像头
        BOOL isCamrma = [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
        if (!isCamrma) {
            NSLog(@"没有摄像头");
            return;
        }
        //摄像头
        imagepicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        //允许编辑
        imagepicker.allowsEditing =YES;
    }
}

//---------2 相册的访问
#pragma mark - UIImagePickerControllerDelegate

//相册选中之后调用
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    //UIImagePickerControllerOriginalImage === 取原始图片
    //UIImagePickerControllerEditedImage === 去编辑以后的图片
    UIImage* image = [info objectForKey:UIImagePickerControllerEditedImage];
    imageview1.image = image;
    NSLog(@"info = %@",info);
    [picker dismissViewControllerAnimated:YES completion:nil];
}
//取消按钮的点击事件
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [picker dismissViewControllerAnimated:YES completion:NULL];
}
//将图片保存
- (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