Controller之间传递数据：属性传值

     在项目中，Controller之间传递数据非常之多，这里简单介绍一下属性传值。例如有FirstController 和 SecondController,数据从First传递到Second中，我们如何操作呢，比如我们传递一个字符串到Second,那么我们就可以在Second中创建一个属性，在First中，推向Second的时候,为Second中那个属性赋值即可。

代码如下所示：

 

 

 

 

 

Objective-C

 

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/////////////////FirstViewController////////////////// - (void)viewDidLoad {     [super viewDidLoad];     UITextField *textFd = [[UITextField alloc]initWithFrame:CGRectMake(10, 10, 300, 150)];     textFd.borderStyle = UITextBorderStyleRoundedRect;     textFd.delegate = self;     textFd.tag = 100;     [self.view addSubview:textFd];     [textFd release];          UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];     button.frame = CGRectMake(130, 170, 60, 40);     [button setTitle:@"传值" forState:UIControlStateNormal];     [button addTarget:self action:@selector(sendValue:) forControlEvents:UIControlEventTouchUpInside];     [self.view addSubview:button]; }   - (void)sendValue:(id)sender {     //获取textfd里面的数据     UITextField *textfield = (UITextField *)[self.view viewWithTag:100];     //初始化第二个second     SecondViewController *second = [[SecondViewController alloc]init];     //为second中的name属性赋值     second.name = textfield.text;     //推过去     [self.navigationController pushViewController:second animated:YES];     [second release]; } - (BOOL)textFieldShouldReturn:(UITextField *)textField {     [textField resignFirstResponder];     return YES; }

 

 

 

 

 

Objective-C

 

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////////////////////SecondViewController - (void)viewDidLoad {     [super viewDidLoad];     UILabel *nameLable = [[UILabel alloc]initWithFrame:CGRectMake(10, 10, 300, 60)];     nameLable.textAlignment = UITextAlignmentCenter;     nameLable.font = [UIFont systemFontOfSize:50];     nameLable.textColor = [UIColor blueColor];     //将属性的值赋值给这个label     nameLable.text = self.name;     [self.view addSubview:nameLable];     [nameLable release]; }