gistfile1.m

button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
    
CGFloat textWidth = [button.currentTitle sizeWithFont:button.titleLabel.font].width;
CGFloat imageWidth = button.currentImage.size.width;
CGFloat buttonWidth = button.frame.size.width;
CGFloat contentWidth = textWidth + 5 + imageWidth;
[button setTitleEdgeInsets:UIEdgeInsetsMake(0, - imageWidth + (buttonWidth - contentWidth) / 2.0f, 0, 0)];
[button setImageEdgeInsets:UIEdgeInsetsMake(2, contentWidth / 2.0f + buttonWidth / 2.0f - imageWidth, 0, 0)];