ce_la_vie
ce_la_vie
2013-01-07 06:37
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UIImagePickerController只支持竖屏模式

根据IOS文档说明,**The UIImagePickerController class supports portrait mode only**,就是UIImagePickerController类只能支持竖屏模式,有没有什么方法能让横屏显示?

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1条回答 默认 最新

  • gaoXxxing
    gaoXxxing 2013-01-07 07:55
    已采纳

    可以用ALAssetsLibrary 获取设备中的图片,然后像uiimagepicker一样显示为横屏和竖屏

    - (void)viewDidLoad
    {
        [super viewDidLoad];
        [activity startAnimating];
    
    
        appObj=(ImagePickerAppDelegate *)[[UIApplication sharedApplication]delegate];
    
        void (^assetEnumerator)(struct ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop)
        {
            if(result != NULL) 
            {
                //assets is a mutualable array...for storing the images that are in the device..
                [assets addObject:result];
            }
        };
    
        void (^assetGroupEnumerator)(struct ALAssetsGroup *, BOOL *) =  ^(ALAssetsGroup *group, BOOL *stop) 
        {
            if(group != nil)
            {
                [group enumerateAssetsUsingBlock:assetEnumerator];
            }
            //meth is a user defined method..   
            [self meth];
            [activity stopAnimating];
            [activity setHidden:YES];
        };
        assets = [[NSMutableArray alloc] init];
        ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
        [library enumerateGroupsWithTypes:ALAssetsGroupAlbum usingBlock:assetGroupEnumerator 
                             failureBlock: ^(NSError *error) { NSLog(@"Failure");}];
    }
    
    
    -(void)meth
    {
        NSLog(@"%i",[assets count]);
    
        if(userOrientation==UIInterfaceOrientationPortrait || userOrientation==UIInterfaceOrientationPortraitUpsideDown)
        {
            NSLog(@"haii");
            [scrollView removeFromSuperview];
    
            scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 460)];
            scrollView.backgroundColor=[UIColor whiteColor];
    
            NSLog(@"%i",[assets count]);
            for (int i = 0; i < [assets count]; i++) 
            {
                imgBtn = [UIButton buttonWithType:UIButtonTypeCustom];
                [imgBtn setFrame:CGRectMake((i%4*80)+2,(i/4*80)+2,75,75)];
                imgBtn.tag=i;
                [imgBtn addTarget:self action:@selector(imageClicked:) forControlEvents:UIControlEventTouchUpInside];
                ALAsset *asset=[assets objectAtIndex:i];
                [imgBtn setImage:[UIImage imageWithCGImage:[asset thumbnail]] forState:UIControlStateNormal];
                [scrollView addSubview:imgBtn];
            }
            scrollView.contentSize = CGSizeMake(320,(([assets count]/4)+1)*300 );
        }
    
        if(userOrientation==UIInterfaceOrientationLandscapeRight || userOrientation==UIInterfaceOrientationLandscapeLeft)
        {
            [scrollView removeFromSuperview];
            scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 480,320)];
            for (int i = 0; i < [assets count]; i++) 
            {
                imgBtn = [UIButton buttonWithType:UIButtonTypeCustom];
                [imgBtn setFrame:CGRectMake((i%6*80)+2,(i/6*80)+2,75,75)];
                imgBtn.tag=i;
                [imgBtn addTarget:self action:@selector(imageClicked:) forControlEvents:UIControlEventTouchUpInside];
                ALAsset *asset=[assets objectAtIndex:i];
                [imgBtn setImage:[UIImage imageWithCGImage:[asset thumbnail]] forState:UIControlStateNormal];
                [scrollView addSubview:imgBtn];
            }
            scrollView.contentSize = CGSizeMake(480,(([assets count]/4)+1)*300);
        }
        [self.view addSubview:scrollView];
    }
    
    
    
    -(void)imageClicked:(UIButton *)sender
    {
        //for picking the images that the user has selected we are using other array "selectedImages" i.e declared in the app delegate
        ALAsset *asset=[assets objectAtIndex:sender.tag];
        [appObj.selectedImages addObject:[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]]];
        NSLog(@"%i",[appObj.selectedImages count]);
        [self.navigationController popViewControllerAnimated:YES ];
    }
    
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