从单独的类中辞退第一响应者

for (UIView *view in mommaView.subviews) {
    do something to the view
}

[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];

+ (void) dumpWindowFrom:(NSString *) fromText {
    [self dumpViews:[[UIApplication sharedApplication] keyWindow] from:fromText];
}

void dumpViewsRecursive(UIView* view, NSString *text, NSString *indent) 
{
    Class cl = [view class];
    NSString *classDescription = [cl description];
    //  while ([cl superclass])   //restore to print superclass list
    //  {
    //      cl = [cl superclass];
    //      classDescription = [classDescription stringByAppendingFormat:@\":%@\", [cl description]];
    //  }

    if ([text compare:@\"\"] == NSOrderedSame)
        NSLog(@\"%d: %@ %@ %@\", (int)view, classDescription, NSStringFromCGRect(view.frame), view.hidden ? @\"Inv\" : @\"Vis\");
    else
        NSLog(@\"%d: %@ %@ %@ %@\", (int)view, text, classDescription, NSStringFromCGRect(view.frame), view.hidden ? @\"Inv\" : @\"Vis\");

    for (NSUInteger i = 0; i < [view.subviews count]; i++)
    {
        UIView *subView = [view.subviews objectAtIndex:i];
        NSString *newIndent = [[NSString alloc] initWithFormat:@\"  %@\", indent];
        NSString *msg = [[NSString alloc] initWithFormat:@\"%@%d:\", newIndent, i];
        dumpViewsRecursive (subView, msg, newIndent);
        [msg release];
        [newIndent release];
    }
}

+ (void) dumpViews: (UIView *) view {
    dumpViewsRecursive  (( (!view) ? [[UIApplication sharedApplication] keyWindow] : view), @\"\" ,@\"\");
}

+ (void) dumpViews: (UIView *) view from:(NSString *) fromText{
    dumpViewsRecursive ((!view) ? [[UIApplication sharedApplication] keyWindow] : view, fromText, @\"\");
}

- (BOOL) textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return 1;
}

- (void) textFieldDidBeginEditing:(UITextField *)textField
{
[textField resignFirstResponder];
}

- (void) textFieldDidEndEditing:(UITextField *)textField
{
[textField resignFirstResponder];
}

textField.tag =1 // for textField 1
textField.tag =2 // for textField 2

// You may check for these tags and then resign specific ones.