iOS 手写输入法奔溃，替换隐藏键盘方法

 {   UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(keyboardHide:)];

    //设置成NO表示当前控件响应后会传播到其他控件上，默认为YES。

    tapGestureRecognizer.cancelsTouchesInView = NO;

    //将触摸事件添加到当前view

    [self.view addGestureRecognizer:tapGestureRecognizer];

}

- (void)keyboardHide:(UITapGestureRecognizer *)sender

{

    [self.view endEditing:YES];

}