UIPickerView 具有自定义视图和标签不滚动
我使用以下代码将标签和视图添加到 UIPickerView。
- (UIView *)pickerView:(UIPickerView *)pickerView
viewForRow:(NSInteger)row
forComponent:(NSInteger)component
reusingView:(UIView *)view {
CustomPickerView *customView = [[CustomPickerView alloc] initWithFrame:CGRectMake(0.0, 0.0, 180, 32)];
CustomPickerLabel *pickerLabelLeft = [[CustomPickerLabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 80, 32)];
[pickerLabelLeft setTextAlignment:UITextAlignmentRight];
pickerLabelLeft.backgroundColor = [UIColor clearColor];
[pickerLabelLeft setText:@"1234"];
[customView addSubview:pickerLabelLeft];
return customView;
我使用视图的原因
是因为我想向该视图添加两个标签并将它们显示在选择器中。 CustomPickerView 和 CustomPickerLabel 类均包含以下代码：
- (void)didMoveToSuperview { if ([[self superview] respondsToSelector:@selector(setShowSelection:)]) { [[self superview] PerformSelector:@selector(setShowSelection:) withObject:NO]; } 上面的
代码对于显示和滚动效果很好，但是当我单击标签进行滚动时，它什么也不做。如果我在标签外部（如选择器的角落）单击，滚轮将按其应有的方式转向选择。
任何建议将不胜感激。
杆
I'm using the following code to add a label and a view to a UIPickerView.
- (UIView *)pickerView:(UIPickerView *)pickerView
viewForRow:(NSInteger)row
forComponent:(NSInteger)component
reusingView:(UIView *)view {
CustomPickerView *customView = [[CustomPickerView alloc] initWithFrame:CGRectMake(0.0, 0.0, 180, 32)];
CustomPickerLabel *pickerLabelLeft = [[CustomPickerLabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 80, 32)];
[pickerLabelLeft setTextAlignment:UITextAlignmentRight];
pickerLabelLeft.backgroundColor = [UIColor clearColor];
[pickerLabelLeft setText:@"1234"];
[customView addSubview:pickerLabelLeft];
return customView;
}
The reason I'm using a view is because I want to add two labels to this view and display them in the picker.
The CustomPickerView and CustomPickerLabel classes contain the following code, each:
- (void)didMoveToSuperview
{
if ([[self superview] respondsToSelector:@selector(setShowSelection:)])
{
[[self superview] performSelector:@selector(setShowSelection:) withObject:NO];
}
}
the above code works fine for display and scrolling, but when I click on the label to scroll, it does nothing. If I click just outside the label, as in the corners of the picker, the wheel turns to the selection as it should.
Any suggestions would be appreciated.
Rod
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将您的 customView 的
userInteractionEnabled属性设置为NO。似乎如果将其设置为 YES，则自定义视图拦截触摸并且选择器无法滚动到点击的行。Set your customView's
userInteractionEnabledproperty toNO. It seems that if it is set to YES then custom view intercept touches and picker can't scroll to the tapped row.