1.UIButton设置文字位置
有些时候我们想让UIButton的title居左对齐，我们设置
btn.textLabel.textAlignment = UITextAlignmentLeft
是没有作用的，我们需要设置
btn.contentHorizontalAlignment = UIControlContentHorizonAlignmentLeft;
但是问题又出来，此时文字会紧贴到做边框，我们可以设置
btn.contentEdgeInsets = UIEdgeInsetsMake(,, , );//使文字距离做边框保持10个像素的距离。
如果是图片+文字：
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = buttonRect;
[button setTitle:@"title" forState:UIControlStateNormal];
[button setImage:buttonImage forState:UIControlStateNormal];
button.imageEdgeInsets = UIEdgeInsetsMake(0.0, WIDTH(button.titleLabel) + 10.0, 0.0, 0.0);
2.自定义UINavigationItem包含图片和文字
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; // 设置frame只能控制按钮的大小
btn.frame= CGRectMake(, , , ); [btn addTarget:self action:@selector(buttonClicked) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *btn_right = [[UIBarButtonItem alloc] initWithCustomView:btn]; UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil]; /** * width为负数时，相当于btn向右移动width数值个像素，由于按钮本身和边界间距为5pix，所以width设为-5时，间距正好调整 * 为0；width为正数时，正好相反，相当于往左移动width数值个像素 */ negativeSpacer.width = -; self.navigationItem.rightBarButtonItems = [NSArray arrayWithObjects:negativeSpacer, btn_right, nil];