点击 View 空白释放键盘

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 在view上添加一个UITapGestureRecognizer
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *tapGr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(viewTapped:)];
tapGr.cancelsTouchesInView = NO;
[self.view addGestureRecognizer:tapGr];
}
-(void)viewTapped:(UITapGestureRecognizer*)tapGr{
[activitySearchBar resignFirstResponder];
}

点击 View 空白释放键盘

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原文地址：http://www.cnblogs.com/allanliu/p/4316196.html