Question

嗨，我是iphone的新手。我所做的是在视图中创建一组按钮。我的代码就像休闲一样

- (void)mymethod1 {
    UIView *view = [[UIView alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
        int row = 0;
        int column = 0;

        for (int i=6; i<_images.count; i++) {

            buttonimage = [UIButton buttonWithType:UIButtonTypeCustom];

            buttonimage.frame = CGRectMake(column*60+5, row*60+5, 70,70);
            [buttonimage setImage:[UIImage imageNamed:[_images objectAtIndex:i]] forState:UIControlStateNormal];
            buttonimage.tag = i;
            [buttonimage addTarget:self 
                       action:@selector(buttonClicked:) 
             forControlEvents:UIControlEventTouchUpInside];
            buttonimage.tag = i; 

            [view addSubview:buttonimage];

            if (column == 4) {
                column = 0;
                row++;
            } else {
                column++;
            }

        }

        self.view = view;
        [ view release];
}

它工作正常。但是当我调用任何其他功能中的所有按钮时，它只能获得最后一个按钮，例如：

- (void)mymethod2 {
NSLog(@"button value %d",buttonimage.tag);

}

“它进入控制台按钮值5”。但我需要获取mymethod2中的所有按钮标记值。如何获取所有按钮标签值。请发布一些代码。谢谢你提前。

Answer 1

你需要迭代当前视图的所有子视图，然后在转换之前检查它是否是一个按钮，如下所示

for (UIView* view in [self.view subviews]) {
  if([view isKindOfClass:[UIButton class]]){
    UIButton *btn = (UIButton*)view; 
    NSLog(@"button value %d", btn.tag); 
  }
}

Answer 2

所有按钮标记值： -

for(int i=0;i<3;i++){
     UIButton *theButton=[[UIButton alloc]init];
     theButton.tag=i;

    //set their selector using add selector
    [theButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchDown];
    //set their frame color title or image
   }

-(void)buttonClicked:(UIButton *)inButton{
       int tags=inbutton.tag;
}

Answer 3

UIButton *BtnTmp=sender;
if([BtnTmp tag])
    [BtnTmp setImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];
else
    [BtnTmp setImage:[UIImage imageNamed:@"uncheck.png"] forState:UIControlStateNormal];

BtnTmp.tag=!BtnTmp.tag;

如何从一组按钮中获取所有按钮标记值

3 个答案: