删除UIPickerView边框

问题描述 投票:1回答:3

默认的“UIPickerView”在我想删除的顶部和底部有一条细灰线,但我无法知道如何做到这一点。

有什么地方我可以设置清除吗?

ios swift uipickerview
3个回答
4
投票

你必须继承UIPickerView,因此:

class MyPickerView: UIPickerView {

    override func layoutSubviews() {
        super.layoutSubviews()

        self.layer.borderWidth = 0 // Main view rounded border

        // Component borders
        self.subviews.forEach {
            $0.layer.borderWidth = 0
            $0.isHidden = $0.frame.height <= 1.0
        }
    }

}

5
投票

在picker视图数据源方法中

 func numberOfComponents(in pickerView: UIPickerView) -> Int {

    pickerView.subviews.forEach({
        $0.isHidden = $0.frame.height < 1.0
    })
    return 1

}

线条将消失


-1
投票

我认为您需要删除所选行的两行,如果是这样,那么您可以使用pickerView的titleForRow或viewForRow委托方法,并在委托方法中使用以下代码。

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
  [[pickerView.subviews objectAtIndex:1] setHidden:TRUE];
  [[pickerView.subviews objectAtIndex:2] setHidden:TRUE];
}

要么

- (UIView *)pickerView:(UIPickerView *)pickerView 
            viewForRow:(NSInteger)row 
          forComponent:(NSInteger)component 
           reusingView:(UIView *)view
{
  [[pickerView.subviews objectAtIndex:1] setHidden:TRUE];
  [[pickerView.subviews objectAtIndex:2] setHidden:TRUE];
}
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