Three20 保存图像？（关闭）
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【中文标题】Three20 保存图像？（关闭）【英文标题】：Three20 to save images?(Close) 【发布时间】：2011-04-29 05:24:55 【问题描述】：我是一个新的 iPhone 应用程序开发人员，我需要创建一个像照片库这样的应用程序。现在我的问题是我不知道如何将图像保存到相册。
我已经构建了我的项目，没有任何错误。在我的模拟器中可以运行该项目。
但我没有看到我添加的任何内容。希望可以帮助我。谢谢。
我的代码在这里。
Three20PhotoDemoAppDelegate.h
#import <UIKit/UIKit.h>
@interface Three20PhotoDemoAppDelegate : NSObject <UIApplicationDelegate>
UIWindow *window;
@property (nonatomic, retain) IBOutlet UIWindow *window;
@end
Three20PhotoDemoAppDelegate.m
#import "Three20PhotoDemoAppDelegate.h"
#import "AlbumController.h"
#import <Three20/Three20.h>
@implementation Three20PhotoDemoAppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
// Override point for customization after application launch
TTNavigator* navigator = [TTNavigator navigator];
TTURLMap* map = navigator.URLMap;
[map from:@"demo://album" toViewController: [AlbumController class]];
[navigator openURLAction:[TTURLAction actionWithURLPath:@"demo://album"]];
return YES;
- (BOOL)application:(UIApplication*)application handleOpenURL:(NSURL*)URL
[[TTNavigator navigator] openURLAction:[TTURLAction actionWithURLPath:URL.absoluteString]];
return YES;
- (void)dealloc
[super dealloc];
@end
PhotoSource.h
#import <Three20/Three20.h>
#import <Three20/Three20+Additions.h>
typedef enum
PhotoSourceNormal = 0,
PhotoSourceDelayed = 1,
PhotoSourceVariableCount = 2,
PhotoSourceLoadError = 4,
PhotoSourceType;
@interface PhotoSource : TTURLRequestModel <TTPhotoSource>
PhotoSourceType _type;
NSString* _title;
NSMutableArray* _photos;
NSArray* _tempPhotos;
NSTimer* _fakeLoadTimer;
- (id)initWithType:(PhotoSourceType)type title:(NSString*)title
photos:(NSArray*)photos photos2:(NSArray*)photos2;
@end
PhotoSource.m
导入“PhotoSource.h”
@implementation PhotoSource
@synthesize title = _title;
- (void)fakeLoadReady
_fakeLoadTimer = nil;
if (_type & PhotoSourceLoadError)
[_delegates makeObjectsPerformSelector: @selector(model:didFailLoadWithError:)
withObject: self
withObject: nil];
else
NSMutableArray* newPhotos = [NSMutableArray array];
for (int i = 0; i < _photos.count; ++i)
id<TTPhoto> photo = [_photos objectAtIndex:i];
if ((NSNull*)photo != [NSNull null])
[newPhotos addObject:photo];
[newPhotos addObjectsFromArray:_tempPhotos];
TT_RELEASE_SAFELY(_tempPhotos);
[_photos release];
_photos = [newPhotos retain];
for (int i = 0; i < _photos.count; ++i)
id<TTPhoto> photo = [_photos objectAtIndex:i];
if ((NSNull*)photo != [NSNull null])
photo.photoSource = self;
photo.index = i;
[_delegates makeObjectsPerformSelector:@selector(modelDidFinishLoad:) withObject:self];
- (id)initWithType:(PhotoSourceType)type title:(NSString*)title photos:(NSArray*)photos
photos2:(NSArray*)photos2
if (self = [super init])
_type = type;
_title = [title copy];
_photos = photos2 ? [photos mutableCopy] : [[NSMutableArray alloc] init];
_tempPhotos = photos2 ? [photos2 retain] : [photos retain];
_fakeLoadTimer = nil;
for (int i = 0; i < _photos.count; ++i)
id<TTPhoto> photo = [_photos objectAtIndex:i];
if ((NSNull*)photo != [NSNull null])
photo.photoSource = self;
photo.index = i;
if (!(_type & PhotoSourceDelayed || photos2))
[self performSelector:@selector(fakeLoadReady)];
return self;
- (id)init
return [self initWithType:PhotoSourceNormal title:nil photos:nil photos2:nil];
- (void)dealloc
[_fakeLoadTimer invalidate];
TT_RELEASE_SAFELY(_photos);
TT_RELEASE_SAFELY(_tempPhotos);
TT_RELEASE_SAFELY(_title);
[super dealloc];
- (BOOL)isLoading
return !!_fakeLoadTimer;
- (BOOL)isLoaded
return !!_photos;
- (void)load:(TTURLRequestCachePolicy)cachePolicy more:(BOOL)more
if (cachePolicy & TTURLRequestCachePolicyNetwork)
[_delegates makeObjectsPerformSelector:@selector(modelDidStartLoad:) withObject:self];
TT_RELEASE_SAFELY(_photos);
_fakeLoadTimer = [NSTimer scheduledTimerWithTimeInterval:2 target:self
selector:@selector(fakeLoadReady) userInfo:nil repeats:NO];
- (void)cancel
[_fakeLoadTimer invalidate];
_fakeLoadTimer = nil;
- (NSInteger)numberOfPhotos
if (_tempPhotos)
return _photos.count + (_type & PhotoSourceVariableCount ? 0 : _tempPhotos.count);
else
return _photos.count;
- (NSInteger)maxPhotoIndex
return _photos.count-1;
- (id<TTPhoto>)photoAtIndex:(NSInteger)photoIndex
if (photoIndex < _photos.count)
id photo = [_photos objectAtIndex:photoIndex];
if (photo == [NSNull null])
return nil;
else
return photo;
else
return nil;
@end
照片.h
#import <Three20/Three20.h>
@interface Photo : NSObject <TTPhoto>
id<TTPhotoSource> _photoSource;
NSString* _thumbURL;
NSString* _smallURL;
NSString* _URL;
CGSize _size;
NSInteger _index;
NSString* _caption;
- (id)initWithURL:(NSString*)URL smallURL:(NSString*)smallURL size:(CGSize)size;
- (id)initWithURL:(NSString*)URL smallURL:(NSString*)smallURL size:(CGSize)size
caption:(NSString*)caption;
@end
照片.m
#import "Photo.h"
@implementation Photo
@synthesize photoSource = _photoSource, size = _size, index = _index, caption = _caption;
- (id)initWithURL:(NSString*)URL smallURL:(NSString*)smallURL size:(CGSize)size
return [self initWithURL:URL smallURL:smallURL size:size caption:nil];
- (id)initWithURL:(NSString*)URL smallURL:(NSString*)smallURL size:(CGSize)size
caption:(NSString*)caption
if (self = [super init])
_photoSource = nil;
_URL = [URL copy];
_smallURL = [smallURL copy];
_thumbURL = [smallURL copy];
_size = size;
_caption;
_index = NSIntegerMax;
return self;
- (void)dealloc
TT_RELEASE_SAFELY(_URL);
TT_RELEASE_SAFELY(_smallURL);
TT_RELEASE_SAFELY(_thumbURL);
TT_RELEASE_SAFELY(_caption);
[super dealloc];
- (void)viewDidLoad
- (NSString*)URLForVersion:(TTPhotoVersion)version
if (version == TTPhotoVersionLarge)
return _URL;
else if (version == TTPhotoVersionMedium)
return _URL;
else if (version == TTPhotoVersionSmall)
return _smallURL;
else if (version == TTPhotoVersionThumbnail)
return _thumbURL;
else
return nil;
@end
相册控制器.h
#import <Three20/Three20.h>
@interface AlbumController : TTPhotoViewController <UIActionSheetDelegate>
NSArray *images;
UIBarButtonItem *_clickActionItem;
UIToolbar *_toolbar;
@property (nonatomic, retain) NSArray *images;
@property (nonatomic, retain) UIBarButtonItem *_clickActionItem;
@property (nonatomic, retain) UIToolbar *_toolbar;
@end
相册控制器.m
#import "AlbumController.h"
#import "PhotoSource.h"
#import "Photo.h"
@implementation AlbumController
@synthesize images;
- (void)loadView
CGRect screenFrame = [UIScreen mainScreen].bounds;
self.view = [[[UIView alloc] initWithFrame:screenFrame]
autorelease];
CGRect innerFrame = CGRectMake(0, 0,
screenFrame.size.width,
screenFrame.size.height);
_innerView = [[UIView alloc] initWithFrame:innerFrame];
_innerView.autoresizingMask = UIViewAutoresizingFlexibleWidth|
UIViewAutoresizingFlexibleHeight;
[self.view addSubview:_innerView];
_scrollView = [[TTScrollView alloc] initWithFrame:screenFrame];
_scrollView.delegate = self;
_scrollView.dataSource = self;
_scrollView.backgroundColor = [UIColor blackColor];
_scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth|
UIViewAutoresizingFlexibleHeight;
[_innerView addSubview:_scrollView];
UIBarButtonItem *_actionButton = [[UIBarButtonItem alloc] initWithImage:
TTIMAGE(@"bundle://Three20.bundle/images/imageAction.png")
style:UIBarButtonItemStylePlain target:self action:@selector
(popupActionSheet)];
_nextButton = [[UIBarButtonItem alloc] initWithImage:
TTIMAGE(@"bundle://Three20.bundle/images/nextIcon.png")
style:UIBarButtonItemStylePlain target:self action:@selector
(nextAction)];
_previousButton = [[UIBarButtonItem alloc] initWithImage:
TTIMAGE(@"bundle://Three20.bundle/images/previousIcon.png")
style:UIBarButtonItemStylePlain target:self action:@selector
(previousAction)];
UIBarButtonItem* playButton = [[[UIBarButtonItem alloc]
initWithBarButtonSystemItem:
UIBarButtonSystemItemPlay target:self action:@selector
(playAction)] autorelease];
playButton.tag = 1;
UIBarItem* space = [[[UIBarButtonItem alloc]
initWithBarButtonSystemItem:
UIBarButtonSystemItemFlexibleSpace target:nil action:nil]
autorelease];
_toolbar = [[UIToolbar alloc] initWithFrame:
CGRectMake(0, screenFrame.size.height - TT_ROW_HEIGHT,
screenFrame.size.width, TT_ROW_HEIGHT)];
_toolbar.barStyle = self.navigationBarStyle;
_toolbar.autoresizingMask = UIViewAutoresizingFlexibleWidth|
UIViewAutoresizingFlexibleTopMargin;
_toolbar.items = [NSArray arrayWithObjects:
_actionButton, space, _previousButton, space,
_nextButton, space, nil];
[_innerView addSubview:_toolbar];
//(Just to add an action sheet)
//At the bottom of that codefile -- I added:
-(void)popupActionSheet
UIActionSheet *popupQuery = [[UIActionSheet alloc]
initWithTitle:nil
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil
otherButtonTitles:@"Save Image",nil];
popupQuery.actionSheetStyle = UIActionSheetStyleBlackOpaque;
[popupQuery showInView:self.view];
[popupQuery release];
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:
(int)buttonIndex
//UIImage* image = [[TTURLCache sharedCache] imageForURL:imageURL];
if (buttonIndex==0)
UIImage* thisImage = [[TTURLCache sharedCache] imageForURL:
[_centerPhoto URLForVersion:TTPhotoVersionLarge]];
UIImageWriteToSavedPhotosAlbum(thisImage, nil, nil, nil);
//UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"URL"
//message:[_centerPhoto URLForVersion:TTPhotoVersionLarge] delegate:self cancelButtonTitle:@"No" ,otherButtonTitles:@"Yes", nil];
//[alert show];
-(void)createPhotos
images = [[NSArray alloc] initWithObjects:
[[[Photo alloc] initWithURL:@"bundle://14.png" smallURL:@"bundle://14.png"
size:CGSizeMake(320, 212)] autorelease],
[[[Photo alloc] initWithURL:@"bundle://30.png" smallURL:@"bundle://30.png"
size:CGSizeMake(320, 212)] autorelease],
[[[Photo alloc] initWithURL:@"bundle://back.jpeg" smallURL:@"bundle://back.jpeg"
size:CGSizeMake(319, 317)] autorelease],
nil];
- (void)viewDidLoad
//[self loadView];
[self createPhotos]; // method to set up the photos array
self.photoSource = [[PhotoSource alloc]
initWithType:PhotoSourceNormal
title:@"SexyGirl"
photos:images
photos2:nil
];
@end
【问题讨论】：
你有什么错误吗？你击中了哪个部位？ 【参考方案1】：如果您只需要将图像保存到相册，您可以使用：
UIImage *myImage;
UIImageWriteToSavedPhotosAlbum(myImage,nil,nil,nil);
如果这不是您的问题，那么我不明白。如果你不告诉我们问题出在哪里，那么发布三页代码是毫无用处的。
【讨论】：
嗨，我想这样做。sol3.typepad.com/tagalong_developer_journa/2009/12/… 谢谢你，终于找到问题了~！以上是关于Three20 保存图像？（关闭）的主要内容，如果未能解决你的问题，请参考以下文章
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