iphone 怎么使用图片选取器 UIImagePickerController
2012-07-03 11:10
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#import <UIKit/UIKit.h> @interface ViewController : UIViewController <UINavigationControllerDelegate,UIImagePickerControllerDelegate>{ UIImageView *backImageView; } @property(retain, nonatomic) IBOutlet UIButton *showImgPickerButton; @property(retain, nonatomic) IBOutlet UIImageView *backImageView; - (IBAction)showImagePicker:(id)sender; @end
// // ViewController.m // test6 // // Created by Totem on 12-7-2. // Copyright (c) 2012年 __MyCompanyName__. All rights reserved. // #import "ViewController.h" @implementation ViewController @synthesize showImgPickerButton; @synthesize backImageView; - (IBAction)showImagePicker:(id)sender { #if TARGET_IPHONE_SIMULATOR UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary; #else UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera; #endif if ([UIImagePickerController isSourceTypeAvailable:sourceType]) { NSLog(@"调用UIImagePickerController"); UIImagePickerController *picker = [[[UIImagePickerController alloc] init] autorelease]; picker.delegate = self; picker.allowsEditing = YES; [self presentModalViewController:picker animated:YES]; // [self.navigationController pushViewController:picker animated:YES]; }else { NSLog(@"为调用UIImagePickerController"); } } //两种完成选取后调用方式之一 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo { NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithDictionary:editingInfo]; [dic setObject:image forKey:@"UIImagePickerControllerEditedImage"]; UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil); [self dismissModalViewControllerAnimated:YES]; [backImageView setImage:image]; } //两种完成选取后调用方式之一 //- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ // if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) { // NSLog(@"来自Camera相机的图片"); // //如果是 来自照相机的image,那么先保存 // UIImage* original_image = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; // UIImageWriteToSavedPhotosAlbum(original_image, self, // @selector(image:didFinishSavingWithError:contextInfo:), // nil); // }else if(picker.sourceType == UIImagePickerControllerSourceTypePhotoLibrary){ // NSLog(@"来自PhotoLibrary"); // }else if(picker.sourceType == UIImagePickerControllerSourceTypeSavedPhotosAlbum){ // NSLog(@"来自"); // } // //获得编辑过的图片 // UIImage* image = [info objectForKey: @"UIImagePickerControllerEditedImage"]; // [self dismissModalViewControllerAnimated:YES]; // [backImageView setImage:image]; //} - (void)image:(UIImageView*)image didFinishSavingWithError:(NSString*)error contextInfo:(NSString*) context{ NSLog(@"保存完成!"); } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{ [self dismissModalViewControllerAnimated:YES]; } - (void)dealloc { [showImgPickerButton release]; [backImageView release]; [super dealloc]; } - (void)viewDidLoad { [super viewDidLoad]; NSError *error = [[[NSError alloc] init] autorelease]; CFShow([[NSFileManager defaultManager] contentsOfDirectoryAtPath:[NSHomeDirectory() stringByAppendingString:@"/documents"] error:&error]); // Do any additional setup after loading the view, typically from a nib. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } @end
xib文件中只有一个UIImageView作为背景,还有一个按钮UIButton用来显示UIImagePickerController
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