如何自定义选择器视图

Question

我想在我的项目中自定义选择器视图。在 pickerview 单元格中添加不同类型的图像并且还想减少 pickerview 高度。

我给你看图片以便更多理解。

如何实现这种类型的pickerview？我检查了自定义演示，但没有找到任何信息。

Answer 1

将条件应用于 UIPickerView 的委托方法。

  - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{
UIImage *img = [UIImage imageNamed:[NSString stringWithFormat:@"your image number %@.png", (long)row]];
UIImageView *imageview= [[UIImageView alloc] initWithImage:img];
imageview.frame = CGRectMake(-70, 10, 60, 40);

UILabel *channelLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, -5, 80, 60)];
channelLabel.text = [NSString stringWithFormat:@"%@", [myArray objectAtIndex:row]];
channelLabel.textAlignment = UITextAlignmentLeft;
channelLabel.backgroundColor = [UIColor clearColor];

UIView *tmpView_row = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 110, 60)];
[tmpView_row insertSubview:imageview atIndex:0];
[tmpView_row insertSubview:channelLabel atIndex:1];

return tmpView_row;
}