Question

For some strange reason, in iPhone OS 3.0 this doesn’t work: I made a big fullscreen UILabel with numberOfLines = 0 and baselineAdjustment = UIBaselineAdjustmentNone.

It refuses to show the text in the upper left. It’s always in the center of the bounding box, aligned to the left.

The documentation says:

UIBaselineAdjustmentNone Adjust text
relative to the top-left corner of the
bounding box. This is the default
adjustment. Available in iPhone OS 2.0
and later.

Probably a framework bug? I started with shiny new labels to test it. Text is centered.

Answer 1

The default implementation vertically centers text and does not honor the contentMode property. Implement drawTextInRect: in a subclass.

@implementation TopLeftLabel

-(void) drawTextInRect:(CGRect)inFrame {
    CGRect      draw = [self textRectForBounds:inFrame limitedToNumberOfLines:[self numberOfLines]];

    draw.origin = CGPointZero;

    [super drawTextInRect:draw];
}

@end

The baselineAdjustment property is strictly for when the font size is being adjusted to fit the width.