[iOS]从相册或相机获取图片

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从相册或相机获取图片

Demo:http://download.csdn.net/detail/u012881779/8659199

拍照要使用真机测试，iPhone和iPad打开相册方式会有所区别：

for iphone:

#import "IPhoneViewController.h"@interface IPhoneViewController () <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
// 从相册获取图片
@property (strong, nonatomic) UIImagePickerController *ymImagePickerAlbum;
// 从相机获取图片
@property (strong, nonatomic) UIImagePickerController *ymImagePickerCamera;
// 显示图片
@property (weak, nonatomic) IBOutlet UIImageView *accordingImageView;@end@implementation IPhoneViewController
@synthesize ymImagePickerAlbum  = _ymImagePickerAlbum;
@synthesize ymImagePickerCamera = _ymImagePickerCamera;- (void)viewDidLoad {[super viewDidLoad];[_accordingImageView.layer setBorderWidth:2.0];[_accordingImageView.layer setBorderColor:[[UIColor colorWithRed:0/255.0 green:89/255.0 blue:185/255.0 alpha:1] CGColor]];
}- (IBAction)returnAction:(id)sender {[self.navigationController popViewControllerAnimated:YES];
}- (IBAction)cameraAction:(id)sender {[self pickImageFromCamera];
}- (IBAction)photoAction:(id)sender {[self pickImageFromAlbum];
}// 清空显示图片
- (IBAction)cleanAction:(id)sender {[_accordingImageView setImage:nil];
}// 从用户相册获取图片
- (void)pickImageFromAlbum {_ymImagePickerAlbum = nil;_ymImagePickerAlbum = [[UIImagePickerController alloc] init];_ymImagePickerAlbum.delegate = self;_ymImagePickerAlbum.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; // 途径_ymImagePickerAlbum.modalTransitionStyle = UIModalTransitionStyleCoverVertical;_ymImagePickerAlbum.allowsEditing = YES;[self presentViewController:_ymImagePickerAlbum animated:YES completion:^{}];
}// 从摄像头获取图片
- (void)pickImageFromCamera {_ymImagePickerCamera = nil;_ymImagePickerCamera = [[UIImagePickerController alloc] init];_ymImagePickerCamera.delegate = self;_ymImagePickerCamera.sourceType = UIImagePickerControllerSourceTypeCamera;_ymImagePickerCamera.modalTransitionStyle = UIModalTransitionStyleCoverVertical;_ymImagePickerCamera.allowsEditing = YES;[self presentViewController:_ymImagePickerCamera animated:YES completion:^{}];
}#pragma mark UIImagePickerControllerDelegate
// 完成图片选择后执行
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {UIImage *img = [info objectForKey:@"UIImagePickerControllerOriginalImage"];// 若是从相机取图片if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {[_accordingImageView setImage:img];} else { // 相册[_accordingImageView setImage:img];}[self dismissViewControllerAnimated:YES completion:^{}];
}// 不选择图片，点击取消后执行
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {[self dismissViewControllerAnimated:YES completion:^{}];
}@end

for ipad:

#import "IPadViewController.h"@interface IPadViewController () <UIImagePickerControllerDelegate, UINavigationControllerDelegate ,UIPopoverControllerDelegate>{}
@property (strong, nonatomic) UIImagePickerController *pickerController;
@property (strong, nonatomic) UIPopoverController     *poverController;
// 显示图片
@property (weak, nonatomic) IBOutlet UIImageView *accordingImageView;@end@implementation IPadViewController
@synthesize pickerController = _pickerController;
@synthesize poverController  = _poverController;- (void)viewDidLoad {[super viewDidLoad];[_accordingImageView.layer setBorderWidth:2.0];[_accordingImageView.layer setBorderColor:[[UIColor colorWithRed:0/255.0 green:89/255.0 blue:185/255.0 alpha:1] CGColor]];
}- (IBAction)returnPageAction:(id)sender {[self.navigationController popViewControllerAnimated:YES];
}// 清空显示图片
- (IBAction)cleanAction:(id)sender {[_accordingImageView setImage:nil];
}// 响应点击事件
- (IBAction)saveAction:(id)sender {_pickerController = nil;_poverController  = nil;[self gPlot:sender];
}- (void)gPlot:(id)sender {NSInteger tag = [sender tag];[UIView animateWithDuration:0.2 delay:0.0 options:UIViewAnimationOptionCurveEaseIn animations:^{} completion:^(BOOL finished) {if (finished) {if (tag == 13) { // 拍照[self presentImageViewControllerWithCameraAvailable:1];} else if (tag == 12) {  // 手机相册[self presentImageViewControllerWithCameraAvailable:0];}}}];
}- (void)presentImageViewControllerWithCameraAvailable:(NSUInteger)isAvaiable {if (!_pickerController) {_pickerController = [[UIImagePickerController alloc] init];_pickerController.delegate = self;}if (isAvaiable == 1) {if (![UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront]) {UIAlertView* alertView =[[UIAlertView alloc] initWithTitle:nilmessage:@"设备不支持拍照"delegate:nilcancelButtonTitle:@"确定"otherButtonTitles: nil];[alertView show];return;}_pickerController.view.tag = 123 + 1;_pickerController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;_pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;[self presentViewController:_pickerController animated:YES completion:nil];} else {_pickerController.view.tag = 123 + 2;_pickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;_pickerController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;_pickerController.allowsEditing = YES;// 所以我们必须通过UIPopoverController来实现才行。具体实现如下：_poverController = [[UIPopoverController alloc] initWithContentViewController:_pickerController];_poverController.popoverContentSize = self.view.frame.size;// contentSize[_poverController presentPopoverFromRect:CGRectMake(95, 235, 300, 300) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionDown|UIPopoverArrowDirectionLeft animated:YES];}
}#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{UIImage *sourceImage = (UIImage *)[info valueForKey:UIImagePickerControllerOriginalImage];if (sourceImage != nil) {[_accordingImageView setImage:sourceImage];} else {[_accordingImageView setImage:sourceImage];}// 拍照if (_pickerController.view.tag == 123 + 1) {[picker dismissViewControllerAnimated:NO completion:NULL];} else {[_poverController dismissPopoverAnimated:NO];}
}- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {[picker dismissViewControllerAnimated:YES completion:NULL];
}@end

示图：

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