ios - 无法在 iOS 11 GM 中更改多个文本字段颜色

Question

在 iOS 10.3 模拟器上工作，但在您点击文本字段之前不能在 iOS 11 上工作。

层次结构:

示例代码如下。

#import "ViewController.h"

@interface ViewController ()
@property (nonatomic) UITextField *textField1;
@property (nonatomic) UITextField *textField2;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 50, 50, 30)];
    textField.borderStyle = UITextBorderStyleLine;
    [self.view addSubview:textField];
    self.textField1 = textField;

    UITextField *textField2 = [[UITextField alloc] initWithFrame:CGRectMake(0, 100, 50, 30)];
    textField2.borderStyle = UITextBorderStyleLine;
    [self.view addSubview:textField2];
    self.textField2 = textField2;

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 200, 50, 50)];
    button.backgroundColor = [UIColor blueColor];
    [button addTarget:self action:@selector(changeColor) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:self.textField1];
    [self.view addSubview:self.textField2];
    [self.view addSubview:button];
}

- (void)changeColor
{
    self.textField1.textColor = [UIColor greenColor];
    self.textField2.textColor = [UIColor greenColor];
}

Answer 1

试试这个。

#import "ViewController.h"

@interface ViewController ()
@property (nonatomic) UITextField *textField1;
@property (nonatomic) UITextField *textField2;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 50, 50, 30)];
    textField.borderStyle = UITextBorderStyleLine;
    [self.view addSubview:textField];
    self.textField1 = textField;

    UITextField *textField2 = [[UITextField alloc] initWithFrame:CGRectMake(0, 100, 50, 30)];
    textField2.borderStyle = UITextBorderStyleLine;
    [self.view addSubview:textField2];
    self.textField2 = textField2;

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 200, 50, 50)];
    button.backgroundColor = [UIColor blueColor];
    [button addTarget:self action:@selector(changeColor) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:self.textField1];
    [self.view addSubview:self.textField2];
    [self.view addSubview:button];
}

- (void)changeColor
{
    self.textField1.textColor = [UIColor greenColor];
    self.textField2.textColor = [UIColor greenColor];
    self.textField1.text = self.textField1.text;
}

只需重置 textfiled1 文本即可。