Objective c 使用不同名称的NSMutableArray和SetImage的相同算法的工作方式不同

所以我有个问题

我有：

NSMutableArray *photos_imagesArray;
NSMutableArray *myPhotos_imagesArray;

在

@接口EXViewController

内的.h文件中声明

我所做的是：

对于一个视图-

photos\u viewController

，我从

photos\u imagesArray

获取图像数据，并在此视图上使用

UIImageView

上的setImage。一切正常

现在，当我使用

myPhotos\u viewController

和

myPhotos\u imagesArray

执行完全相同的操作时，setImage不会启动并且

myPhotos\u imagesArray

会清空

这到底是怎么回事？我有两个非常相同的算法在两个同样相同的视图中工作，但是我得到了不同的结果。唯一不同的是几个名字。XCode甚至没有显示任何错误

更新1（共享代码）：

在EXViewController.h中声明可变数组的位置

@interface EXViewController : UIViewController <UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate> {
    UIImagePickerController *upload_imagePickerCamera;
    UIImagePickerController *upload_imagePickerLibrary;
    UIImage *upload_imageUploaded;
    IBOutlet UIImageView *upload_imageViewUploadedImage;

    // Photos Currently viewed
    NSInteger _photoIndex;
    NSMutableArray *photos_imagesArray;
    NSMutableArray *myPhotos_imagesArray;
}

至于那部分没有-

// MY PHOTOS

-(void)myPhotos_goToMyPhotos{

    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *viewControllerPhotos = [mainStoryboard instantiateViewControllerWithIdentifier:@"viewControllerMyPhotos"];
    [self  presentViewController:viewControllerPhotos animated:true completion:^{

        PFQuery *query_photos = [PFQuery queryWithClassName:@"Photo"];

        [query_photos whereKey:@"userId" equalTo:[PFUser currentUser].objectId];
        [query_photos orderByDescending:@"createdAt"];

        [query_photos findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
            if (!error) {
                _photoIndex = 0;

                // Copy objects array to photos array
                myPhotos_imagesArray = [objects mutableCopy];

                NSLog(@"%i",[myPhotos_imagesArray count]);

                // Set Current photo
                [self myPhotos_setCurrentPhoto];


            } else {

                NSString *errorString = [error userInfo][@"error"];
                UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Error" message:errorString delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
                [alert show];

            }
        }];

    }];

}

-(void)myPhotos_setCurrentPhoto{

    if ([myPhotos_imagesArray count] != 0) {

        // Set photo in image view
        PFFile *userImageFile = myPhotos_imagesArray[_photoIndex][@"imageFile"];
        [userImageFile getDataInBackgroundWithBlock:^(NSData *imageData, NSError *error) {
            if (!error) {
                UIImage *image = [UIImage imageWithData:imageData];
                self.myPhotos_imageViewCurrentPhoto.image = image;
            }
        }];

    }
}

另外，我在完成回调的内部和外部尝试了该算法-结果相同

更新2（添加了整个EXViewController.h文件）：

#导入
#进口
@接口EXViewController:UIViewController{
UIImagePickerController*上传\U imagePickerCamera；
UIImagePickerController*上传\U imagePickerLibrary；
UIImage*上传图片上传；
IBOUTLE UIImageView*upload_imageViewUploadedImage；
//当前查看的照片
NSInteger_光指数；
NSMutableArray*照片\图像阵列；
NSMutableArray*myPhotos\u imagesArray；
}
//登录表单
@属性（强，非原子）IBOutlet UITextField*login\u fieldEmail；
@属性（强，非原子）IBOutlet UITextField*login\u fieldPassword；
-（iAction）登录按钮识别：（id）发件人；
-（iAction）登录按钮协商：（id）发件人；
//报名表
@属性（强，非原子）IBOUTLE UITextField*signup\U fieldEmail；
@属性（强，非原子）IBOutlet UITextField*注册\字段密码；
@属性（强，非原子）IBOUTLE UITextField*signup\U FIELDCONTRY；
@属性（强，非原子）IBUISegmentedControl*signup_fieldSex；
@属性（强、非原子）IBOUTLE UITextField*signup\U fieldYear；
-（iAction）按钮启动操作：（id）发送方；
//照片
@属性（弱、非原子）IBUIImageView*photos\U imageViewCurrent；
-（iAction）照片按钮更新加：（id）发件人；
-（iAction）照片按钮日期减：（id）发件人；
//菜单
-（iAction）菜单按钮识别：（id）发送方；
-（iAction）菜单按钮照片：（id）发送者；
//上传照片
-（iAction）上传按钮照片：（id）发件人；
-（iAction）上传按钮照片库：（id）发件人；
-（iAction）上传按钮上传：（id）发件人；
@属性（强，非原子）IBUIProgressView*upload\u progressViewUpload；
@属性（强，非原子）IBOUTLE UILabel*upload_labelImageUploaded；
@属性（强，非原子）IBUIActivityIndicatorView*上传重力；
//我的照片
@属性（弱、非原子）IBUIImageView*myPhotos\U imageViewCurrentPhoto；
@属性（弱，非原子）IBUILabel*myPhotos\U labelRating；
@属性（弱，非原子）IBUILabel*myPhotos_labelVotes；
-（iAction）myPhotos_按钮下一步：（id）发件人；
-（iAction）myPhotos_buttonPrevious:（id）发件人；
@结束

显然，这与名字无关。将它们设置为属性并在其上设置断点，这将允许您查看发生了什么或没有发生什么。或者只是在所有对其进行更改的行上放置断点，然后访问无法正常工作的行。没有更多信息，很难说。您应该添加一些断点并登录代码以检查您的假设。请共享一些代码。您在EXViewController中发布的所有代码都是吗？FWIW，您的setImage语法在两者之间是不同的。我看不出这有什么关系，除非块因为语法不同而保留了不同的指针。

// MY PHOTOS

-(void)myPhotos_goToMyPhotos{

    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *viewControllerPhotos = [mainStoryboard instantiateViewControllerWithIdentifier:@"viewControllerMyPhotos"];
    [self  presentViewController:viewControllerPhotos animated:true completion:^{

        PFQuery *query_photos = [PFQuery queryWithClassName:@"Photo"];

        [query_photos whereKey:@"userId" equalTo:[PFUser currentUser].objectId];
        [query_photos orderByDescending:@"createdAt"];

        [query_photos findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
            if (!error) {
                _photoIndex = 0;

                // Copy objects array to photos array
                myPhotos_imagesArray = [objects mutableCopy];

                NSLog(@"%i",[myPhotos_imagesArray count]);

                // Set Current photo
                [self myPhotos_setCurrentPhoto];


            } else {

                NSString *errorString = [error userInfo][@"error"];
                UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Error" message:errorString delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
                [alert show];

            }
        }];

    }];

}

-(void)myPhotos_setCurrentPhoto{

    if ([myPhotos_imagesArray count] != 0) {

        // Set photo in image view
        PFFile *userImageFile = myPhotos_imagesArray[_photoIndex][@"imageFile"];
        [userImageFile getDataInBackgroundWithBlock:^(NSData *imageData, NSError *error) {
            if (!error) {
                UIImage *image = [UIImage imageWithData:imageData];
                self.myPhotos_imageViewCurrentPhoto.image = image;
            }
        }];

    }
}

#import <UIKit/UIKit.h>
#import <Parse/Parse.h>

@interface EXViewController : UIViewController <UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate> {
    UIImagePickerController *upload_imagePickerCamera;
    UIImagePickerController *upload_imagePickerLibrary;
    UIImage *upload_imageUploaded;
    IBOutlet UIImageView *upload_imageViewUploadedImage;

    // Photo Currently viewed
    NSInteger _photoIndex;
    NSMutableArray *photos_imagesArray;
    NSMutableArray *myPhotos_imagesArray;
}

// Login Form
@property (strong, nonatomic) IBOutlet UITextField *login_fieldEmail;
@property (strong, nonatomic) IBOutlet UITextField *login_fieldPassword;
- (IBAction)login_buttonSignInAction:(id)sender;
- (IBAction)login_buttonForgotAction:(id)sender;


// Sign Up Form
@property (strong, nonatomic) IBOutlet UITextField *signup_fieldEmail;
@property (strong, nonatomic) IBOutlet UITextField *signup_fieldPassword;
@property (strong, nonatomic) IBOutlet UITextField *signup_fieldCountry;
@property (strong, nonatomic) IBOutlet UISegmentedControl *signup_fieldSex;
@property (strong, nonatomic) IBOutlet UITextField *signup_fieldYear;
- (IBAction)buttonSignupAction:(id)sender;

// Photos
@property (weak, nonatomic) IBOutlet UIImageView *photos_imageViewCurrent;
- (IBAction)photos_buttonRatePlus:(id)sender;
- (IBAction)photos_buttonRateMinus:(id)sender;


// Menu
- (IBAction)menu_buttonSignOutAction:(id)sender;
- (IBAction)menu_buttonMyPhotos:(id)sender;


// Upload Photo
- (IBAction)upload_buttonTakePhoto:(id)sender;
- (IBAction)upload_buttonPhotoAlbum:(id)sender;
- (IBAction)upload_buttonUpload:(id)sender;
@property (strong, nonatomic) IBOutlet UIProgressView *upload_progressViewUpload;
@property (strong, nonatomic) IBOutlet UILabel *upload_labelImageUploaded;
@property (strong, nonatomic) IBOutlet UIActivityIndicatorView *upload_gravity;

// My Photos
@property (weak, nonatomic) IBOutlet UIImageView *myPhotos_imageViewCurrentPhoto;
@property (weak, nonatomic) IBOutlet UILabel *myPhotos_labelRating;
@property (weak, nonatomic) IBOutlet UILabel *myPhotos_labelVotes;
- (IBAction)myPhotos_buttonNext:(id)sender;
- (IBAction)myPhotos_buttonPrevious:(id)sender;



@end