UIButton titleLabel在报刊上resize？

我试图给一个UIButton（用resizableImages创建）一些文本取决于按下状态。 我看到的行为是，当我按下它时，按钮图像的宽度会改变（变得更宽）。 我想要的是当我按下它时文本改变，但是按钮保持相同的宽度。 我已经摆弄了许多UIButton选项，并没有任何运气。 这就是我目前正在做的事情:(有趣的是，按钮宽度变化的量似乎与按钮框架的宽度相关（更大 – >更多变化）：

UIImage *normalButton = [UIImage imageNamed:@"ButtonSlice.png"]; UIImage *pressedButton = [UIImage imageNamed:@"ButtonPressedSlice.png"]; normalButton = [normalButton resizableImageWithCapInsets:UIEdgeInsetsMake(0, 2, 0, 2)]; pressedButton = [pressedButton resizableImageWithCapInsets:UIEdgeInsetsMake(0, 2, 0, 2)]; UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom]; myButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentFill; [myButton setImage:normalButton forState:UIControlStateNormal]; [myButton setImage:pressedButton forState:UIControlStateHighlighted]; [myButton addTarget:self action:@selector(pressed) forControlEvents:UIControlEventTouchUpInside]; myButton.titleLabel.font = [UIFont fontWithName:@"Helvetica" size:18.0]; [myButton setTitleColor:[UIColor colorWithWhite:0.1 alpha:1] forState:UIControlStateNormal]; [myButton setTitle:@"Highlighted" forState:UIControlStateHighlighted]; [myButton setTitle:@"Default" forState:UIControlStateNormal]; myButton.titleLabel.textAlignment = UITextAlignmentCenter; //No effect? myButton.adjustsImageWhenHighlighted = NO; myButton.frame = CGRectMake(ceil(controllerFrame.size.width/2 - 100), 80, 200, 50);