当用户点击iPhone键盘上的“发送”按钮时，如何执行选择器？

我有一个新的观点。当用户点击Send键时，我希望能够自动执行选择器。我该怎么做？我知道尤特菲尔德有

-（BOOL）textField应该返回：（UITextField*）textField

您可以使用

[self performSelector:@selector(aMethod) withObject:nil afterDelay:0.1];

在

希望它对您有所帮助。

尝试一下：

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range 
 replacementText:(NSString *)text; {
  // Any new character added is passed in as the "text" parameter.
  if ([text isEqualToString:@"\n"]) {
    // If the Done button was pressed, resign the keyboard.
    [textView resignFirstResponder];
    // Return FALSE so that the final '\n' character doesn't get added.
    return NO;
  }
  // For any other character return TRUE so that the text gets added to the view.
  return YES;
}

---

希望有帮助

我有一个新的观点。您建议的委托方法适用于不同的UITextField。

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range 
 replacementText:(NSString *)text; {
  // Any new character added is passed in as the "text" parameter.
  if ([text isEqualToString:@"\n"]) {
    // If the Done button was pressed, resign the keyboard.
    [textView resignFirstResponder];
    // Return FALSE so that the final '\n' character doesn't get added.
    return NO;
  }
  // For any other character return TRUE so that the text gets added to the view.
  return YES;
}