Question

刚才我点击按钮动态创建了文本字段我的代码是：

-(void)clickonAdd
{
     CGRect textfieldFrame = CGRectMake(18, 350,309,35.0);
     UITextField *textField = [[UITextField alloc]initWithFrame:textfieldFrame];
     textField.borderStyle = UITextBorderStyleRoundedRect;
     textField.font = [UIFont systemFontOfSize:15];
     textField.placeholder = @"Select Item List";
     textField.autocorrectionType = UITextAutocorrectionTypeNo;
     textField.keyboardType = UIKeyboardTypeDefault;
     textField.returnKeyType = UIReturnKeyDone;
     textField.clearButtonMode = UITextFieldViewModeWhileEditing;
     textField.contentVerticalAlignment =UIControlContentVerticalAlignmentCenter;
     textField.delegate = self;
     [self.view addSubview:textField];
}

现在我想添加更多不同位置的文本字段，点击同一个按钮...请你帮我...提前谢谢

Answer 1

喜欢

适用于多个文字字段

float x = 20;

float y = 40; 

for(int i=0;i<5;i++)
{
 UITextfield *textField = [[UITextfield alloc]initWithFrame:CGRectMake(x,y,200,30)];
textfield.tag = i;

// add your code here 

 [self.view  addSubview:textField];

// if you want to change the y position of every textfield, change y coordinates
y = y+50;
 // if you want to change the x position of every textfield, change x coordinates
x = x+50;

}

单一文字字段

我们可以采取多种方式。

<强>选择-1

@interface SettingsViewController ()
{
 // create two float values for x and y
 CGFloat y;
 CGFloat x;
  UITextField *textField;
}

你的viewdidload上的

- (void)viewDidLoad {
  [super viewDidLoad];

   y = 0;
   x = 0;
   CGRect textfieldFrame = CGRectMake(x, y,309,35.0);
  textField = [[UITextField alloc]initWithFrame:textfieldFrame];
 textField.borderStyle = UITextBorderStyleRoundedRect;
 textField.font = [UIFont systemFontOfSize:15];
 textField.placeholder = @"Select Item List";
 textField.autocorrectionType = UITextAutocorrectionTypeNo;
 textField.keyboardType = UIKeyboardTypeDefault;
 textField.returnKeyType = UIReturnKeyDone;
 textField.clearButtonMode = UITextFieldViewModeWhileEditing;
 textField.contentVerticalAlignment =UIControlContentVerticalAlignmentCenter;
 textField.delegate = self;
 [self.view addSubview:textField];

 // hide your textfield here
 textField.hidden  = YES;

}

按钮操作

-(void)clickonAdd
{
  textField.hidden  = NO;
  x  = x + 200;
  y =  y + 35;
  textField.frame = CGRectMake(x, y, 309,35);

Answer 2

试试这个......

@interface ViewController ()
{
    CGFloat y;
    CGFloat x;
}

- (void)viewDidLoad 
{
    [super viewDidLoad];

    y = 0;
    x = 0;
}

-(void)clickButtonAdd
{
    UITextField *textField;
    textField.frame = CGRectMake(x, y,100,30);
    textField = [[UITextField alloc]initWithFrame:textfieldFrame];
    textField.borderStyle = UITextBorderStyleRoundedRect;
    [self.view addSubview:textField];

    x  = x + 120;
    y =  y + 40;
}

Answer 3

您可以执行以下操作：

-(void)clickonAdd:(CGRect)aFrame
{
     CGRect textfieldFrame = aFrame;
     // Rest of the code...
}

并在某处[self clickonAdd:CGRectMake(x, y, w, h)]调用它。

Answer 4

考虑使用UITableView。您将需要表视图，其中每个表视图单元格都保留UITextField。

然后在clickonAdd方法中，您只需要将新单元格添加到表格视图中。

-(void) clickonAdd {
    NSInteger numberOfRows = [self.textFieldsTableView  numberOfRowsInSection:0];
    NSIndexPath *newTextFieldIdxPath = [[NSIndexPath alloc] indexPathForRow: numberOfRows inSection:0];
    [self.textFieldsTableView insertRowsAtIndexPaths:@[newTextFieldIdxPath] withRowAnimation: UITableViewRowAnimationAutomatic];
}

如何在单击“添加”按钮时动态添加新文本字段

4 个答案: