ios - 突出显示动态创建的 UIButtons？

Question

在我的应用程序中，我在 ScrollView 中创建了 20 个按钮，现在的问题是我无法突出显示所选按钮。

我的目的是用不同于正常的外观来显示按下的按钮。当按下另一个按钮时，前一个按钮应该变为正常:

UIButton *Abutton = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
    [Abutton setTag:i-1];
    Abutton.frame = CGRectMake(30.0, 0+j, 40.0, 40.0);
    [Abutton setTitle:@"" forState:UIControlStateNormal];
    Abutton.backgroundColor = [UIColor clearColor];
    [Abutton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal ];
    UIImage *buttonImageNormal = [UIImage imageNamed:@"image1.png"];
    UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
    [Abutton setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
    UIImage *buttonImagePressed = [UIImage imageNamed:@"image2.png"];
    UIImage *strechableButtonImagePressed = [buttonImagePressed stretchableImageWithLeftCapWidth:12 topCapHeight:0];
    [Abutton setBackgroundImage:strechableButtonImagePressed forState:UIControlStateHighlighted];
    [Abutton addTarget:self action:@selector(buttonpressed:) forControlEvents:UIControlEventTouchUpInside];

    [scrollview addSubview:Abutton];

最后我创建了按下按钮的方法如下:

-(IBAction)buttonpressed:(id)sender{
         Abutton.highlighted=YES;
         //.....
         //.....
}

如果这样做，那么只会突出显示动态创建的最后一个按钮。这不是我想要的。

Answer 1

我认为您应该为按下的按钮替换当前代码:

    -(IBAction)buttonpressed:(id)sender{
UIButton *b = (UIButton *)sender;
             b.highlighted = YES;
             //.....
             //.....
    }

在您的示例中，您特别突出了“AButton”。此代码突出显示按下的按钮。