#import <UIKit/UIKit.h> @interface DXWViewController : UIViewController<UIImagePickerControllerDelegate,UINavigationControllerDelegate> @property (retain, nonatomic) IBOutlet UIImageView *imageView; @property (retain, nonatomic) IBOutlet UIButton *Button; @property(retain,nonatomic) UIImage *image; - (IBAction)click:(id)sender; @end

ViewController.m:

#import "DXWViewController.h"  @interface DXWViewController ()  @end  @implementation DXWViewController  - (void)viewDidLoad {     [super viewDidLoad]; 	 }  -(void)viewWillAppear:(BOOL)animated {     self.imageView.image = self.image; } //加载成功 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {     self.Image = [info objectForKey:UIImagePickerControllerEditedImage];     [picker dismissViewControllerAnimated:YES completion:nil]; } //取消 -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {     [picker dismissViewControllerAnimated:YES completion:nil]; }  - (void)dealloc {     [_imageView release];     [_image release];     [_Button release];     [super dealloc]; } //打开图库获取图片 - (IBAction)click:(id)sender {     if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {         UIImagePickerController *picker = [[UIImagePickerController alloc] init];         picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;         picker.delegate = self;         picker.allowsEditing = YES;         [self presentViewController:picker animated:YES completion:nil];     } } @end

运行结果：