for循环创建多个按钮

• (void)viewDidLoad {
  [super viewDidLoad];

  float x = 60;
  float y = 100;
  float w = 30;
  float h = 30;

  NSArray *btnTitles = [NSArray arrayWithObjects:@"button1",@"button2",@"button3",@"button4",@"button5", nil];

  for (num = 0; num<5; num++) {
  _btn = [UIButton buttonWithType:UIButtonTypeCustom];
  NSLog(@"%@",_btn);
  [_btn setFrame:CGRectMake(w+ num *x, y, w, h)];
  _btn.tag = num * 1000;

    NSDictionary * attributes =@{NSFontAttributeName:[UIFont fontWithName:@"Palatino-Roman" size:15],NSForegroundColorAttributeName:[UIColor redColor]};
    NSDictionary * attributesSelect =@{NSFontAttributeName:[UIFont fontWithName:@"Palatino-Roman" size:15],NSForegroundColorAttributeName:[UIColor blueColor]};
    //使用了富文本
    NSAttributedString *buttonTitleString =[[NSAttributedString alloc]initWithString:btnTitles[num] attributes:attributes];
    NSAttributedString *buttonTitleStringSelect=[[NSAttributedString alloc]initWithString:btnTitles[num] attributes:attributesSelect];
    
    [_btn setAttributedTitle:buttonTitleString forState:UIControlStateNormal];
    [_btn setAttributedTitle:buttonTitleStringSelect forState:UIControlStateDisabled];
   
    [_btn setTitle:[btnTitles objectAtIndex:num] forState:UIControlStateNormal];
    
    [_btn addTarget:self action:@selector(btn_click:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btn];
  

  }

}

• (void)btn_click:(UIButton )btn
  {
  _index = btn.tag;
  //在self.view.subviews 遍历view视图
  for(UIView * subView in self.view.subviews){
  //给[UIButton class] 做匹配
  if([subView isKindOfClass:[UIButton class]]){
  UIButton * subBtn = (UIButton)subView;
  if(subBtn.tag == btn.tag){
  [subBtn setEnabled:NO];

        }else{
            [subBtn setEnabled:YES];
            
        }
    }
  

  }
  }