iOS试图将图像保存到相机胶卷但没有成功

时间:2012-06-23 04:20:13

标签: iphone objective-c ios uiimage

我在UIImageView中有一个图像,并希望将其保存到设备的照片中,以便最终将其保存为壁纸。虽然代码编译没有错误,但图像不能保存,我担心在使用'UIImage'与'UIImageView'或其他所有东西时我做错了。图像的名称是“Q115birdsfull~iphone.png”,我的代码到目前为止。我做错了什么???

Q115birdsViewController.h

#import <UIKit/UIKit.h>

@interface Q115birdsViewController : UIViewController 
{
    UIImage *Q115birdsfull;
}

@property (nonatomic, strong) UIImage *Q115birdsfull;

- (IBAction)onClickSavePhoto:(id)sender;

@end

Q115birdsViewController.m

#import "Q115birdsViewController.h"

@interface Q115birdsViewController ()
@end

@implementation Q115birdsViewController

@synthesize Q115birdsfull;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
    // Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}

- (IBAction)onClickSavePhoto:(id)sender{
    UIImageWriteToSavedPhotosAlbum(Q115birdsfull, nil, nil, nil);
}

` 提前谢谢!

1 个答案:

答案 0 :(得分:3)

您尝试保存的是UIImage作为财产和ivar保存的内容。我在您的代码中看到的是您实际将该图像设置为任何内容的位置。这可能是你缺少的一步。

尝试这样做:

- (IBAction)onClickSavePhoto:(id)sender{

    if(Q115birdsfull == NULL)
    {
        NSLog( @"there is no Q115birdsfull image set");
        Q115birdsfull = [UIImage imageNamed: @"Q115birdsfull"];

        // if it's STILL null, we'll try a much more specific name
        if(Q115birdsfull == NULL)
        {
            Q115birdsfull = [UIImage imageNamed: @"Q115birdsfull~iphone"];
        }
    }

    if(Q115birdsfull){
        // by the way, variable names should *always* start with lower case letters
        UIImageWriteToSavedPhotosAlbum(Q115birdsfull, nil, nil, nil);
    }
    else {
        NSLog( @"never found the Q115birdsfull png file... is it really being copied into your built app?");
    }
}