UITextField遇到问题

创建了UITextField，具体代码：

UItextField *mobileNumberField = [[UITextField alloc] initWithFrame:CGRectMake(10, 195, 300, 41)];
mobileNumberField.delegate = self;
mobileNumberField.borderStyle = UITextBorderStyleRoundedRect;
[mobileNumberField.layer setCornerRadius:14.0f];
mobileNumberField.placeholder = @"Mobile Number";
[self.paymentsHomeView addSubview:mobileNumberField];

但是显示的效果是这样：

不知道为什么框会断开。请高手帮忙改成这样的效果：

很简单，删除这行：

mobileNumberField.borderStyle = UITextBorderStyleRoundedRect;

然后再加上这些：

[mobileNumberField setBackgroundColor:[UIColor whiteColor]];
[mobileNumberField.layer setBorderColor:[UIColor grayColor].CGColor];
[mobileNumberField.layer setBorderWidth:1.0];

相信这个代码能帮你

 UITextField *mobileNumberField = [[UITextField alloc] initWithFrame:CGRectMake(10, 195, 300, 41)];
    mobileNumberField.delegate = self;
    mobileNumberField.layer.borderWidth = 1.0f;
    mobileNumberField.layer.borderColor = [UIColor lightGrayColor].CGColor;
    mobileNumberField.
//    mobileNumberField.borderStyle = UITextBorderStyleRoundedRect;
    [mobileNumberField.layer setCornerRadius:14.0f];
    mobileNumberField.placeholder = @"Mobile Number";
    [self.paymentsHomeView addSubview:mobileNumberField];