【iOS学习】----UIToolbar

来源：互联网发布：淘宝怎么查看流量编辑：程序博客网时间：2024/04/29 14:37
UIToolbar也是常用的控件之一，用法如下：
    toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 416, 320, 44)];    toolbar.barStyle = UIBarStyleBlackTranslucent;//半透明样式    toolbar.tintColor = [UIColor grayColor];//背景颜色    [self.view addSubview:toolbar];        UIBarButtonItem *itemField = [[UIBarButtonItem alloc] initWithCustomView:inputField];//输入框        //间隔(会把两个item之间的空间平均分布，是可变的)，比如你想把三个按钮均匀放在toolbar上，就需要这个间隔隔开三个按钮    UIBarButtonItem *itemFlexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace                                                                               target:self                                                                               action:nil];    //按钮    UIBarButtonItem *itemSend = [[UIBarButtonItem alloc] initWithTitle:@"Send"                                                                 style:UIBarButtonItemStyleBordered                                                                target:self                                                                action:@selector(sendBtnClicked)];     //间隔是不可变的(注意与FlexibleSpace的区别)    UIBarButtonItem *itemFixedSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace                                                                                    target:self                                                                                    action:nil];    //按钮    UIBarButtonItem *itemRedo = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRedo                                                                              target:self                                                                              action:@selector(sendBtnClicked)];         NSArray *arr = [NSArray arrayWithObjects:itemField,itemFlexibleSpace,itemSend, itemFixedSpace,itemRedo,nil];    //添加到toolbar中    [toolbar setItems:arr];        [itemField release];    [itemFlexibleSpace release];    [itemSend release];    [itemFixedSpace release];    [itemRedo release];