iOS 10 关于相机拍照和图片单张选取

最新推荐文章于 2024-11-02 15:29:16 发布

原创最新推荐文章于 2024-11-02 15:29:16 发布 · 338 阅读

0 ·

CC 4.0 BY-SA版权

本文介绍如何在iOS应用中集成相册选取和相机拍摄功能，包括使用UIImagePickerController选择图片，调整图片尺寸，并将拍摄的照片保存到相册。

#import "ViewController.h"

#import "GTMBase64.h"

#import <AssetsLibrary/AssetsLibrary.h>

@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>

@property (nonatomic,strong) UIViewController * parentView;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

- (IBAction)photosOrcamrae:(id)sender {

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"选择" message:nil preferredStyle: UIAlertControllerStyleActionSheet];

UIAlertAction *deleteAction = [UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *deleteAction){

[self takePictureClick];

}];

UIAlertAction *archiveAction = [UIAlertAction actionWithTitle:@"相册中选取" style:UIAlertActionStyleDefault handler:^(UIAlertAction *archiveAction){

[self pictureBtnClick];

}];

UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *cancelAction){

}];

[alertController addAction:cancelAction];

[alertController addAction:deleteAction];

[alertController addAction:archiveAction];

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

}

//调用相机

- (void)takePictureClick{

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])

{

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

pic.sourceType = UIImagePickerControllerSourceTypeCamera;

pic.allowsEditing = YES;

pic.showsCameraControls = YES;

pic.delegate =self;

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

}

- (void)image:(UIImage *)image didFinishSavingWithError:

(NSError *)error contextInfo:(void *)contextInfo;

{

// Handle the end of the image write process

if (!error){

NSLog(@"Image written to photo album");

}else{

NSLog(@"Error writing to photo album: %@",

[error localizedDescription]);

}

//相册选取图片

- (void)pictureBtnClick{

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

ipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

ipc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;

ipc.allowsEditing = YES;

ipc.delegate =self;

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

}

#pragma mark - ImagePickerDelegate

-(UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize

{

UIGraphicsBeginImageContext(newSize);

[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];

UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();

return newImage;

}

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

{

//相册和相机拍摄的照片选择都走这个代理

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

CGSize imagesize = image.size;

imagesize.height =200;

imagesize.width =200;

UIImage *img = [self imageWithImage:image scaledToSize:imagesize];

[self updateUserHeaderWithImage:img];

[self dismissViewControllerAnimated:YES completion:nil];

}

- (void)updateUserHeaderWithImage:(UIImage *)image {

NSData *imageData = UIImageJPEGRepresentation(image, 1.0);

NSString *imageStr = [GTMBase64 stringByEncodingData:imageData];

//相机拍摄照片存储照片

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])

{

ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];

[library writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)[image imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){