iOS 隐藏键盘

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizeralloc] initWithTarget:selfaction:@selector(hideKeyboard)];

[_tableView.tableViewaddGestureRecognizer:gestureRecognizer];

gestureRecognizer.cancelsTouchesInView =NO;

[gestureRecognizer release];

- (void)hideKeyboard

{

    [_contactPickerViewendEditing:YES];

}