关于ios：UITextField清除按钮用于屏幕动画

UITextField clear button use with screen animation

当用户输入文本字段时，我有一个执行动画的屏幕(向上移动屏幕)，以便在输入数据时保持可见，然后在用户输入数据后向下移动。我遇到的问题是当用户尝试使用文本框内的清除按钮时(使用site_TextField.clearButtonMode = UITextFieldViewModeAlways设置)。按下清除按钮时文本字段的流程应为：

textFieldShouldEndEditing - > textFieldDidEndEditing - > textFieldShouldClear - > textFieldShouldBeginEditing - > textFieldDidBeginEditing

但是，textFieldDidEndEditing方法是调用动画的位置，执行动画时，上面的序列停止，并且不调用textFieldShouldClear。我希望这是一件简单的事，我只是想念。任何输入都表示赞赏！

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- (BOOL)textFieldShouldBeginEditing:(UITextField *) textField
{
NSLog(@"In textFieldShouldBeginEditing");
return YES;
}

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if (textField == site_TextField || textField == phone_TextField) {
[self animateTextField: textField up: YES];
}
}

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
NSLog(@"In textFieldShouldEndEditing");
return YES;
}

- (void)textFieldDidEndEditing:(UITextField *)textField
{
if (textField == site_TextField || textField == phone_TextField) {
[self animateTextField: textField up: NO];
}
}

- (BOOL)textFieldShouldClear:(UITextField *)textField {

NSLog(@"In textFieldShouldClear");
return YES;
}

- (void) animateTextField: (UITextField*) textField up: (BOOL) up
{
if (textField != site_TextField && textField != phone_TextField) {
return;
}

int movementDistance = 0;
if (textField == site_TextField) {
movementDistance = 100;
} else if (textField == phone_TextField) {
movementDistance = 170;
}

int movement = (up ? -movementDistance : movementDistance);

[UIView animateWithDuration:0.3
delay:0.0
options: UIViewAnimationOptionAllowUserInteraction
animations:^{
self.view.frame = CGRectOffset(self.view.frame, 0, movement);
}
completion:^(BOOL finished){
}];
}