ios - 如何在 ios 中将 NSobject 类数据从一个类传递到另一个类？

Question

您好，我是 ios 的新手，在我的应用程序中，我创建了一个 NSModel 对象来显示 tableList，当我点击 tableList 行时，我想将该模型类对象数据带到另一个类。

我该怎么做？

View Controller :-

NSMutableArray * mainArray;

//TableList Delegate Methods:-

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    return 1;
}

    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

        return mainArray.count;
    }

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *cellIdentifier = @"HistoryCell";

    UITableViewCell *cell = (UITableViewCell *)[MaintableView dequeueReusableCellWithIdentifier:cellIdentifier];
    if (cell == nil){

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    }

    model1 = mainArray[indexPath.row];
    cell.textLabel.text = model1.Name;
    cell.detailTextLabel.text = model1.MasterId;

    newBtn=[UIButton buttonWithType:UIButtonTypeCustom];
    [newBtn setFrame:CGRectMake(250,5,30,30)];
    [newBtn addTarget:self action:@selector(urSelctor:) forControlEvents:UIControlEventTouchUpInside];
    UIImage *btnImage = [UIImage imageNamed:@"uncheck.png"];
    [newBtn setImage:btnImage forState:UIControlStateNormal];
    [cell addSubview:newBtn];

    return cell;
}


    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    ViewController1 *controller = [self.storyboard instantiateViewControllerWithIdentifier:@"ViewController1"];
    //ModelObject1 *model = mainArray[indexPath.row];
    model1 = mainArray[indexPath.row];
    controller.modelobj = model1;
    controller.modelobjArray = mainArray;
    [self.navigationController pushViewController:controller animated:YES];
}

-(void)urSelctor :(UIButton*)sender{

    UIImage *currentImage = sender.imageView.image;
    isValidate = [currentImage isEqual:[UIImage imageNamed:@"uncheck.png"]]?NO:YES;
    NSLog(@"VALUE IS : %@", (isValidate) ? @"YES" : @"NO");
    [sender setImage:[UIImage imageNamed:((isValidate) ? @"uncheck.png" : @"check.png")] forState:UIControlStateNormal];

    if (isValidate) {
        model1.ischeck = YES;
    }else{
        model1.ischeck = NO;
    }
 }

@end

模型对象1:-

#import "ModelObject1.h"

@implementation ModelObject1

@synthesize MasterId,Name,ischeck;

-(void)loadingservices :(id)mainDictionary{

    NSLog(@"loadingservices %@",mainDictionary);

    Name = [mainDictionary objectForKey:@"Name"];
    MasterId = [mainDictionary objectForKey:@"MasterId"];
}

@end

View Controller 1:-

#import "ViewController1.h"

    @interface ViewController1 ()

    @end

    @implementation ViewController1
    @synthesize modelobj,modelobjArray;

    - (void)viewDidLoad {
        [super viewDidLoad];

        for (int i=0; i<modelobjArray.count;++i) {

            modelobj = modelobjArray[i];
            NSLog(@"Name is=======>%@",modelobj.Name);
            NSLog(@"Check value is%hhd",modelobj.ischeck);
        }
     }

Answer 1

将您的模型类的属性创建到目标 View Controller 和源 Controller 中，创建目标 Controller 的对象并设置模型属性的值。

像这样修改你的方法:

-(void)urSelctor :(UIButton*)sender{
    model1 = mainArray[indexPath.row];
    if (model1.ischeck) 
    {
        model1.ischeck = NO;
     [sender setImage:[UIImage imageNamed:@"uncheck.png"] forState:UIControlStateNormal];
    }
    else
    {
        model1.ischeck = YES;
       [sender setImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];
    }
 }