我正在重用一些动态构建UIButtons的代码(没有界面构建器)。我正在使用addTarget:action:forControlEvents方法在每次按下按钮时执行操作。我根据setSelected和isSelected属性更改了按钮的背景颜色。
我添加了一个重置按钮,以便一次取消选择所有按钮。但是,我很难确定如何访问动态添加按钮的属性。
创建按钮的代码如下:
for(int y = 1; y < 10; y++)
{
for(int x = 1; x < 5; x++){
z++;
aButton = [UIButton buttonWithType:UIButtonTypeCustom];
aButton.frame = CGRectMake(x*x_plot, y_plot, 60, 40);
[aButton setBackgroundImage:[UIImage imageNamed:@"btnUnselected.png"] forState:UIControlStateNormal];
[aButton addTarget:self action:@selector(digitClick:) forControlEvents:UIControlEventTouchUpInside];
[aButton setTitle:[NSString stringWithFormat:@"%d",z] forState:UIControlStateNormal];
aButton.titleLabel.textColor = [UIColor blackColor];
aButton.tag = z;
[self.view addSubview:aButton];
}
y_plot=y_plot+45; //make a 4x9 grid of buttons
}
答案 0 :(得分:0)
您可以使用此类代码浏览所有子视图
NSArray *ar = self.view.subviews;
[ar enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
if ([obj isKindOfClass:[UIButton class]])
{
NSLog(@"I've got 'obj' that is a UIButton on the screen!!!!");
}
}];