Question

我遇到UIPickerView的问题。其委托方法：

-(void)pickerView:(UIPickerView *)pickerView
     didSelectRow:(NSInteger)row
      inComponent:(NSInteger)component;

当用户点击所选行下方的行时，不会调用

。

拾取器设置动画并将“触摸”行放在拾取器的中间但它的旋转不会停止（它继续向上移动约1px并向下移动1px）并且不调用委托方法。

是否有人遇到过同样的问题并且有解决方案？

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow1:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{
CGFloat pickerRowRectHeight = PICKER_ROW_HEIGHT;

if (!view) 
{
    CGFloat rectWidth = 300;

    CGRect viewRect = !component ? CGRectMake(0, 0, rectWidth, pickerRowRectHeight) : CGRectMake(0, 0, 50, pickerRowRectHeight);
    view = [[[UIView alloc] initWithFrame:viewRect] autorelease];
    view.backgroundColor = [UIColor clearColor];

    CGRect labelRect = CGRectMake(32 , 0, rectWidth-12, pickerRowRectHeight);
    CGFloat fontSize = FONT_SIZE;

    UIImageView *imageView = [[UIImageView alloc] init];
    imageView.frame = CGRectMake(10, 7, 16, 16);
    imageView.backgroundColor = [ UIColor clearColor];
    imageView.tag = IMAGE_TAG;
    [view addSubview:imageView];
    [imageView release];

    UILabel *label = [[UILabel alloc] initWithFrame:labelRect];
    label.lineBreakMode = UILineBreakModeMiddleTruncation;
    label.backgroundColor = [UIColor clearColor];
    label.textColor = [UIColor blackColor];
    label.font = [UIFont systemFontOfSize:fontSize];
    label.tag = LABEL_TAG;          
    [view addSubview:label];
    [label release];
} 



UILabel *label = (UILabel *)[view viewWithTag:LABEL_TAG];
label.text = [[someArray objectAtIndex:row] objectForKey:@"title"];
UIImageView *leftImg = (UIImageView*) [view viewWithTag:IMAGE_TAG];
NSData *dataUrl = [NSData dataWithContentsOfURL:[NSURL URLWithString:[[someArray objectAtIndex:row] objectForKey:@"icon"]]];
if (dataUrl!=nil) {
    leftImg.image = [UIImage imageWithData: dataUrl];
}
else
{
    leftImg.image = [UIImage imageNamed:[[someArray objectAtIndex:row] objectForKey:@"icon"]];
}


view.userInteractionEnabled = NO;

return view;}

Answer 1

检查您是否分配了选择器视图委托，

- (void)viewDidLoad
{

pickerView.delegate = self;
...

UIPickerView旋转不会在iOS 5中停止

1 个答案: