在iOS開發中關於正向傳值的問題

兩個輸入框和一個按鈕

    _TextFiled  = [[UITextField alloc]init];_TextFiled.frame = CGRectMake(0, 100, 320, 50);    _TextFiled.textColor = [UIColor redColor];    _TextFiled.borderStyle = UITextBorderStyleRoundedRect;    _TextFiled.font = [UIFont boldSystemFontOfSize:20];    _TextFiled.delegate = self;    _TextFiled.tag = 1000;    [self.view addSubview:_TextFiled];        _TextFiled1 = [[UITextField alloc]init];    _TextFiled1.frame = CGRectMake(0, 300, 320, 50);    _TextFiled1.textColor = [UIColor redColor];    _TextFiled1.borderStyle = UITextBorderStyleRoundedRect;    _TextFiled1.font = [UIFont boldSystemFontOfSize:20];    _TextFiled1.delegate = self;    _TextFiled1.secureTextEntry = YES;    _TextFiled1.tag = 2000;    [self.view addSubview:_TextFiled1];        _button = [UIButton buttonWithType:UIButtonTypeCustom];    _button.frame = CGRectMake(320 / 2, 360, 100, 50);    UIImage * image_button = [UIImage imageNamed:@"9.gif"];    [_button addTarget:self action:@selector(buttonAction) forControlEvents:UIControlEventTouchUpInside];    [_button setImage:image_button forState:UIControlStateNormal];        [_button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [self.view addSubview:_button];

傳值的方法

-(void)buttonAction{        //正向傳值    UITextField * textField1 = (UITextField *)[self.view viewWithTag:1000];    UITextField * textField2 = (UITextField *)[self.view viewWithTag:2000];        ViewController_text * text = [[ViewController_text alloc]init];    text.text1 = textField1.text;    text.text2 = textField2.text;        //切換到下一介面    [self presentViewController:text animated:YES completion:nil];}

在下一個介面中得到值：

UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(10, 200, 310, 50)];    label.textAlignment = NSTextAlignmentLeft;   //從上一個介面傳下來的值    label.text = [NSString stringWithFormat:@"Text1:%@ ----- Text2:%@", _text1,_text2];    label.textColor = [UIColor redColor];    [label setFont:[UIFont boldSystemFontOfSize:20]];    label.backgroundColor = [UIColor grayColor];    [self.view addSubview:label];