Question

遇到麻烦。我有一个UIButton我想作为一个开/关开关告诉其他按钮运行一些代码。基本上，如果UIButton是＆＃34; On＆＃34;然后点击屏幕上的所有其他按钮将随机改变视图的背景颜色。谢谢你的帮助！

这是我正在使用的想法。超级新，并没有得到它。谢谢你的帮助!!

// Buttons Play Sounds
////////////////////////////////////////////////////////

- (IBAction)D1{
    [self playD1];

}

- (IBAction)A2{
    [self playA2];
}

- (IBAction)Bb3{
    [self playBb3];
}

- (IBAction)D5{
    [self playD5];
}

- (IBAction)G7{
    [self playG7];


// Make array of the buttons?
- (IBAction)switchNotes:(UIButton *)sender {


    sender.selected = !sender.selected;
    if(sender.selected)
    {
        NSLog(@"Switch is ON");
        for(UIButton *myButton in self.myButtonCollection) {
            // What to do?


        }
    }
    else
    {
        NSLog(@"Switch is OFF");
        for(UIButton *myButton in self.myButtonCollection) {
           // what to do? 
        }

    }

Answer 1

您可以在随机颜色生成器中实现一个if()语句测试youBut.selected或另一个存储它的变量，如：

-(void)changeBackground:(UIButton*)sender{
if(!but.selected) return;
int r = rand() % 255;  // or implement special method to treat range with sender.tag
int g = rand() % 255;  
int b = rand() % 255;  
myView.backgroundColor = [UIColor colorWithRed:r Green:g Blue:b];

}

UiButton作为开关然后有其他按钮跟随

1 个答案: