IOS 根据数组的个数对UIButton进行重复或循环使用

//设置一个view

view = [[UIView alloc] initWithFrame:CGRectMake(0, 38, 320, 30)];

view.backgroundColor = [UIColor lightGrayColor];

[self.view addSubview:view];

for (int i=0; i<5; i++) {

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

button.tag = 100+i;

button.frame = CGRectMake(64*i+3, 3, 58, 25);

[button addTarget:self action:@selector(doButton:) forControlEvents:UIControlEventTouchUpInside];

[button setTitle:[NSString stringWithFormat:@"%@",[array objectAtIndex:i]] forState:UIControlStateNormal];

//默认在第一个

if (button.tag == 100) {

[button setBackgroundImage:[UIImage imageNamed:@"blueBtn.png"] forState:UIControlStateNormal];

}

//将循环创建的button都添加到view上面

[view addSubview:button];

}

#pragma mark - button触发的方法

-(void)doButton:(UIButton *)sender

{

for (UIButton *button in view.subviews) {

if (button.tag != sender.tag) {

[button setBackgroundImage:nil forState:UIControlStateNormal];

}

else

[button setBackgroundImage:[UIImage imageNamed:@"blueBtn.png"] forState:UIControlStateNormal];

}

}