Question

我正在使用以下代码，但在开始编辑UITextView时无法识别：

-(void)textViewDidBeginEditing:(UITextView *)textView{

[done setHidden:NO];

NSLog(@"Started editing target!");

}

为什么会这样？

我也已将代理添加到.h文件中。

Answer 1

尝试设置UITextView的委托。您需要在Interface Builder中将插座连接到委托，或者如果您以编程方式创建它，您可以：

yourTextView.delegate = self;

将委托设置为要插入元素的控制器。

Answer 2

if ([self.textView isFirstResponder]) ...

更新：我包含完整的来源，表明UITextView肯定会响应isFirstResponder @ d2burke

#import "TextViewController.h"

@interface TextViewController ()
@property (nonatomic, retain) IBOutlet UITextView *textView;
@end

@implementation TextViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (IBAction)click:(UIButton *)check
{
    BOOL isActive = [self.textView isFirstResponder];
    NSLog(@"%d", isActive);
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

Answer 3

请确保你：

nameOfTextView .delegate = self;
显示您在班级中使用UITextViewDelegate的编译器

Answer 4

Firstly you have to set UIViewController <UITextViewDelegate>
Set

yourTextview.delegate = self;
And catch this delegate using

-(void)textViewDidBeginEditing:(UITextView *)textView { [self.yourTextview setText:@""]; [yourTextview setTextColor:[UIColor blackColor]]; }

Answer 5

也可以是“duh”答案，但如果你在IB中创建了textView，你还记得连接插座吗？

如何检查何时编辑UITextView？

5 个答案: