Question

我通过代码

创建了几个按钮

    for(int i=0;i<2;i++)
{
            UIButton *btn_pin = [[UIButton alloc] initWithFrame:CGRectMake(100*i,100*i, 20, 20)];
            [btn_pin setBackgroundColor:[self colorFromHexString:@"5DBBAB"]];
            [btn_pin setTitle:[NSString stringWithFormat:@"%d",[arr_product count]+1] forState:UIControlStateNormal];
            [btn_pin.titleLabel setFont:[UIFont fontWithName:@"ProximaNova-Regular" size:10.0]];
            btn_pin.layer.cornerRadius = 10.0;
            btn_pin.layer.masksToBounds = YES;
            btn_pin.layer.borderColor = [UIColor whiteColor].CGColor;
            btn_pin.layer.borderWidth = 1.0;
            btn_pin.userInteractionEnabled = TRUE;
            btn_pin.titleEdgeInsets = UIEdgeInsetsMake(2, 0, 0, 0);
            [btn_pin.layer setBorderColor:[UIColor whiteColor].CGColor];
            [btn_pin addTarget:self action:@selector(imageMoved:withEvent:) forControlEvents:UIControlEventTouchDown];
            [btn_pin addTarget:self action:@selector(imageMoved:withEvent:) forControlEvents:UIControlEventTouchDragInside];

            [img_main addSubview:btn_pin];
            [tbl_product reloadData];
}

现在我想通过拖动来移动这些按钮，我已经创建了拖放，但我如何获得此按钮的引用。

Answer 1

在你的循环中：

btn_pin.tag = i;

并在imageMoved中：

UIButton *btn_pin = (UIButton *)sender;
int refIndex = btn_pin.tag;

按钮中的拖放问题

1 个答案: