在iPhone中单击按钮时如何将文本字段/标签中的值添加到数组 [英] How add values from text field / label to an array when a button click in iphone

问题描述

我有一个文本字段，用户可以输入1-10之间的值

I have a text field In that user can enter values from 1-10

在文本字段底部，我有一个按钮.

at the bottom of the text field i have button.

当用户单击完成"按钮时，我需要将文本中的值添加到数组中

i need to add the values in text filed to array when user clicks done button

为此，我编写了这样的代码.

for this i wrote code like this.

- (void)viewDidLoad
{
    [super viewDidLoad];
    PainlevelsArray = [[NSMutableArray alloc] init]; //PainlevelsArray declared in .h

}


-(IBAction)doneClick:(id)sender
{
    [PainlevelsArray addObject:txtField.text ];

    // [PainlevelsArray insertObject:rateLabel.text atIndex:0 ];
    NSLog(@"PainlevelsArray *** %@",PainlevelsArray);

   [self.navigationController popToRootViewControllerAnimated:YES];

}

但是，每个时间数组仅在单击按钮时才在日志中仅显示最近添加的一个值，像这样

But every time array displays only the recently added one value only in log when button clicks, like this

控制台上的输出

Output on Console

======================

========================

2012-05-07 10:11:15.689 ESPT[796:10d03] PainlevelsArray *** (
    2
)
2012-05-07 10:11:27.984 ESPT[796:10d03] PainlevelsArray *** (
    4
)

My array gets empty every time view loads, and adde a fresh entry when button clicks 但是我需要这样

2012-05-07 10:11:27.984 ESPT[796:10d03] PainlevelsArray *** (
        4,
        5,
        2,
        6,
        8,
    )

所有进入的路径都添加/插入到现有阵列中.

All the velues enters are adde/inserted to the existing array.

预先感谢

在ExerciseStartViewController中

-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
 ExerciseResult *result = [[ExerciseResult alloc] init];
            [self.navigationController pushViewController:result animated:YES];
            [result release];
    }

当前/ExerciseResult视图控制器中的

- (void)viewDidLoad
{
    [super viewDidLoad];
    PainlevelsArray = [[NSMutableArray alloc] init]; //PainlevelsArray declared in .h

}


-(IBAction)doneClick:(id)sender
{
    [PainlevelsArray addObject:txtField.text ];

    // [PainlevelsArray insertObject:rateLabel.text atIndex:0 ];
    NSLog(@"PainlevelsArray *** %@",PainlevelsArray);

   [self.navigationController popToRootViewControllerAnimated:YES];

}

推荐答案

您需要使用全局数组.

最好的解决方案是在AppDelegate.h文件中声明一个数组，然后在applicationdidfinishlaunch方法中对该数组进行分配初始化.

Best possible solution is declare an array in AppDelegate.h file and alloc-init this array in applicationdidfinishlaunch method.

AppDelegate *app =  (AppDelegate*)[[UIApplication sharedApplication] delegate];
[app.arrMutable addObject:textField.text ]; 

使用UserDefaults :用于将您的应用程序数据保存为键值格式.除非您尚未将其从沙箱中删除，否则存储为用户默认值的值/对象始终保留在应用程序中.您可以使用以下代码将数组存储在userdefaults中.

Use UserDefaults: These are used to save your application data in key-value format. The values/objects stored as userdefaults always remain in application, until you have not removed it from sandbox. You can use following code to store an array in userdefaults.

[[NSUserDefaults standardUserDefaults] setObject:app.arrMutable forKey:@"Global_Array_Key"];

在AppDelegae applicationDidFinishLuanch方法中，您可以使用以下命令从userdefaults中检索此数组:

In AppDelegae applicationDidFinishLuanch method you can retrieve this array from userdefaults using:

self.arrMutable = [[NSMutableArray alloc]initWithArray:[[NSUserDefaults standardUserDefaults]objectForKey:@"Global_Array_Key"]];

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