DisMiss Keyboard，自定义的工具类

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////  Keyboard.h//  CustomAddress////  Created by Snow on 9/17/12.//  Copyright (c) 2012 Snow. All rights reserved.//#import <Foundation/Foundation.h>@interface Keyboard : NSObject+ (void)dismissKeyboard;+ (void) globalResignFirstResponder;+ (void) globalResignFirstResponderRec:(UIView*) view;@end
////  Keyboard.m//  CustomAddress////  Created by Snow on 9/17/12.//  Copyright (c) 2012 Snow. All rights reserved.//#import "Keyboard.h"@implementation Keyboard+ (void)dismissKeyboard {    [self globalResignFirstResponder];}+ (void) globalResignFirstResponder {    UIWindow * window = [[UIApplication sharedApplication] keyWindow];    for (UIView * view in [window subviews]){        [self globalResignFirstResponderRec:view];    }}+ (void) globalResignFirstResponderRec:(UIView*) view {    if ([view respondsToSelector:@selector(resignFirstResponder)]){        [view resignFirstResponder];    }    for (UIView * subview in [view subviews]){        [self globalResignFirstResponderRec:subview];    }}@end
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