UITextField中的图像右视图未出现

Question

我有这个代码将一个26 x 30 .png文件添加到UITextField的右视图中.

//add button to address bar
//UIButton *refreshButton = [UIButton buttonWithType:UIButtonTypeInfoDark];
UIButton *refreshButton = [UIButton buttonWithType:UIButtonTypeCustom];
[refreshButton setImage:[UIImage imageNamed:@"refresh.png"] forState:UIControlStateNormal];
[refreshButton setImage:[UIImage imageNamed:@"refresh.png"] forState:UIControlStateHighlighted];
refreshButton.imageEdgeInsets = UIEdgeInsetsMake(0, -16, 0, 0);
[refreshButton addTarget:self action:@selector(refresh) forControlEvents:UIControlEventTouchUpInside];
addressBar.rightView = refreshButton;
addressBar.rightViewMode = UITextFieldViewModeUnlessEditing;

按钮是可触摸的,并调用它应该的方法,但不显示图像.

有任何想法吗？可能是图像对于文本字段来说太大了吗？我的文字字段是我从IB拖入的标准尺寸,所以我不认为是这样,但这是一个想法.

文本字段为245 x 31

Answer 1

您是否尝试在初始化UIButton时指定框架而不是使用类方法buttonWithType.我猜测没有它,文本字段无法确定按钮的大小.

[[UIButton alloc] initWithFrame:CGRectMake(0, 0, width, height)]