iphone - 我们可以在 UITextView 上执行哪些 addTarget 操作？

Question

我想在 UITextView 上使用 addTarget:action，就像在(UITextField 或 UIButton)上一样。

我想在 UITextView 上调用一个方法。

请给出一些可能的解决方案...

谢谢你...

UITextView  *TXT_First_Tag = [[UITextView alloc] initWithFrame:CGRectMake(5, textPosY, 350, 65)];
TXT_First_Tag.backgroundColor = [UIColor whiteColor];
TXT_First_Tag.font = [UIFont fontWithName:@"Arial-BoldMT" size:30.0];
TXT_First_Tag.editable =YES;
TXT_First_Tag.tag = i; 
TXT_First_Tag.textColor = [UIColor blackColor];


[TXT_First_Tag addTarget:self action:@selector(C6Loop) forControlEvents:UIControlEventEditingDidEnd]; //  This Line I want to use, it's working fine on textfield...
[scrollview addSubview:TXT_First_Tag];

Answer 1

为此，我们使用 UITextView 委托(delegate)方法。

将其放入您的代码中。

UITextView  *TXT_First_Tag = [[UITextView alloc] initWithFrame:CGRectMake(5, textPosY, 350, 65)];
TXT_First_Tag.backgroundColor = [UIColor whiteColor];
TXT_First_Tag.font = [UIFont fontWithName:@"Arial-BoldMT" size:30.0];
TXT_First_Tag.editable =YES;
TXT_First_Tag.delegate  =   self;
TXT_First_Tag.tag = i; 
TXT_First_Tag.textColor = [UIColor blackColor];
[scrollview addSubview:TXT_First_Tag];

- (void)textViewDidBeginEditing:(UITextView *)textView{
    NSLog(@"Begin editing");
}

- (void)textViewDidEndEditing:(UITextView *)textView{
    NSLog(@"DidEndEditing");
}

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView{
    NSLog(@"ShouldBeginEditing");
    return TRUE;
}

- (BOOL)textViewShouldEndEditing:(UITextView *)textView{
    NSLog(@"ShouldEndEditing");
    return TRUE;
}