如何在两个 ViewControllers 之间传递数据，其中第一个 VC 有两个 tableView，第二个 tableView 选择的数据应该传递给第二个 VC? [英] How to pass data between two ViewControllers where first VC having two tableViews, second tableView selected data should pass to second VC?

问题描述

我在 ViewController 中有两个 tableView.我想将第二个 tableView 数据传递给第二个 ViewController.

I have two tableViews in a ViewController. I want to pass the second tableView data to second ViewController.

现在每当点击类别时，相关数据将显示在子类别表中.现在，如果我单击身份平面和实体图"等子类别数据，则该单元格标签文本应传递给下一个 viewController.我可以传递数据，但是每当单击第二个表格单元格时，它都不会传递到下一个 ViewController.问题是我无法通过传递数据进入下一个视图.我在DidSelectRowAtIndexPath"方法中遇到问题.请帮我解决这个问题并将代码发给我.

Now whenever clicking on Category, that related data will display in SubCategory table. Now if i click on SubCategory data like "Identity planar and solid figures", that cell label text should be pass to next viewController. i can pass data but whenever clicking on Second table cell, that is not going to next ViewController. The problem is i am not able to go to next View with passing data. I am getting problem at "DidSelectRowAtIndexPath" method. Please help me on this problem and send me the code.

这是我的代码

-(void)viewDidLoad

{


NSMutableArray *Mute_Category=[[NSMutableArray alloc]initWithObjects:@"Geometry", @"Mixed operations", nil];

NSMutableArray *Mute_Sub_Category=[[NSMutableArray alloc]initWithObjects:@"Identify planar and solid figures", @"Open and closed shapes and qualities of polygons", @"Nets of 3-dimensional figures", @"Types of angles", nil];

tag=1;

[table_category reloadData];

}

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

    return 1;

}

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

    if (tag==1)
    {
        return [Mute_category count];
    }
    else
    {
        return [Mute_Sub_Category count];
    }

}

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

    cell=[[UITableViewCell alloc]init];

    if (tag==1)
    {
        cell.textLabel.text=[Mute_category objectAtIndex:indexPath.row];
    }
    else
    {
        cell.textLabel.text=[Mute_Sub_Category objectAtIndex:indexPath.row];
    }

    return cell;


}

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

        NSString *localStr=[Mute_category objectAtIndex:indexPath.row];

        tag=2;

        [table_sub_category reloadData];

  }

推荐答案

您可以使用属性来访问其他类的数据:

You can use a property to access the data from other classes:

@interface YourSecondView : UIViewController {
}

@property (nonatomic, retain) NSString* dataString;

不要忘记在 YourSecondView.m 上 @synthesize

在表视图控制器中，您可以像这样传递数据

In the table View Controller you can pass data like that

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

{

       YourSecondView * SV = [[YourSecondView alloc]init];
       sv.dataString = [Mute_category objectAtIndex:indexPath.row];

       // here write what you want to do next...

  }

这是在视图控制器之间传递数据的很好解释

这篇关于如何在两个 ViewControllers 之间传递数据，其中第一个 VC 有两个 tableView，第二个 tableView 选择的数据应该传递给第二个 VC?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！