按下其他按钮后不能更改uibutton的图像
我有2个按钮，即使它们被释放时仍然保持被按下的图像，直到按下另一个按钮，然后图像返回到正常图像我的代码是这样的：
- (IBAction)button1_touch:(UIButton *)sender
{
[Button2 setImage:[UIImage imageNamed:@"b2Released.png"] forState:UIControlStateNormal];
[Button1 setImage:[UIImage imageNamed:@"b1Pressed.png"] forState:UIControlStateNormal];
}
- (IBAction)button2_touch:(UIButton *)sender
{
[Button1 setImage:[UIImage imageNamed:@"b1Released.png"] forState:UIControlStateNormal];
[Button2 setImage:[UIImage imageNamed:@"b2Pressed.png"] forState:UIControlStateNormal];
}
上面的代码工作正常，当应用程序启动时，行为是预期按下两个按钮，图像更改正确，但是当我按下其他按钮比这两个，“Button2”一旦它获得“B2Pressed.png”图像，它永远不会返回到它发布的图像，我在button1_touch中写了一个nslog，并按预期方式打印，并且Button1获取了它的压缩图像，但Button2没有获取其释放的图像，就像当按下其他按钮时UiButton的setImage方法被破坏按钮比这两个，其他按钮是独立于这两个，对我来说这种行为是完全没有意义的，它可能是xcode破碎？ 我正在使用xcode 7.2
编辑：当我按另一个按钮时，只有当该按钮有一个动作选择器分配给它（UIControlEventTouchUpInside）时出现问题。
你可以为此selected使用UIButton的状态：
- (void)viewDidLoad {
// ...
// the place where you do buttons setup
[button1 setImage:[UIImage imageNamed:@"b1Released"] forState:UIControlStateNormal];
[button1 setImage:[UIImage imageNamed:@"b1Pressed"] forState:UIControlStateSelected];
[button2 setImage:[UIImage imageNamed:@"b2Released"] forState:UIControlStateNormal];
[button2 setImage:[UIImage imageNamed:@"b2Pressed"] forState:UIControlStateSelected];
}
- (IBAction)firstButtonTouch:(UIButton *)sender {
button1.selected = YES;
button2.selected = NO;
}
- (IBAction)secondButtonTouch:(UIButton *)sender {
button1.selected = NO;
button2.selected = YES;
}
上一篇: can't change image of uibutton after pressing other buttons