根据宽度设置字体

Question

朋友您好我在UIPickerview行中显示文字。但是当标签尺寸过大时，Picker行会在标签的末尾显示....

我想在Picker行显示整个标题而不是这个。我可以根据pickerview中的标题宽度自动设置字体大小。

Answer 1

您需要实施以下方法：

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{

    UILabel* tView = (UILabel*)view;

    if (!tView){

        tView = [[UILabel alloc] init];

        // Setup label properties - frame, font, colors etc
        ...
    }

    // Fill the label text here
    ...
    return tView;
}

Answer 2

使您的控制器成为UIPickerViewDelegate和UIPickerViewDataSource，然后您可以使用此例程为您的选择器行进行任何自定义更改：

-(UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{

//make your own view here, it can be a UILabel if you want, or other kind of view.

//You can give it any size font you need.

}