UITextfield

UITextField

设置大小

UITextField *textField =[ [UITextField alloc]initWithFrame:CGRectMake(x,y,w,h)];

初始化文字

textField.text = @"";

设置字体颜色

textField.textColor = [UIColor redColor];

设置字体系统大小

textField.font = [UIFont boldSystemSizeOfSize:1];

设置字体对其方式

textField.textAlignment = NSTextAlignmentCenter;

设置输入框风格

textField.borderStyle = UITextBorderStyleLine;

textField.borderStyle = UITextBorderStyleBzel;

textField.borderStyle = UITextBorderStyleRoundedRect;

设置输入框的提示文字

textField.placeholder = @"请输入账号";

设置在输入时时候删除之前的字体

textField.clearOnBeginEditing = YES;

把控件放在视图控件上（子视图放在父视图上）

[self.view addSubview:textField];

让此输入框失去焦点

-(void)touchBegan:(NSSet *)thouches withEvent:(UIEvent *)event{

[textField resignFirstResponder];

}