更改UIButton图像，单击UITableView UIButton

Question

在UITableView中，cellForRowAtIndexPath用一个图像创建一个按钮。为该按钮编写操作，单击以更改按钮图像。这是密码。

ButtonImage = [UIImage imageNamed:@"work_exe_old.png"];    
myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
myButton.frame = CGRectMake(250,10,34,34);
myButton.tag=22;
[myButton setBackgroundImage:ButtonImage forState:UIControlStateNormal];
[myButton addTarget:self  action:@selector(select_id:)forControlEvents:UIControlEventTouchDown];

- (IBAction)select_id:(id)search
{
    UIButton *tempBtn =(UIButton *) search;
    [tempBtn setImage:[UIImage imageNamed:@"work_exe.png"]    forState:UIControlStateNormal];
}

单击按钮图像changed(work_exe.png).温再次点击相同的按钮意味着图片想要改变(work_exe_old.png)，它的类似复选框在表视图中。我怎样才能做到这一点？

Answer 1

而不是这样做，您可以更好地定制您的代码。检查下面的代码：

ButtonImage = [UIImage imageNamed:@"work_exe.png"];
ButtonImageSelected = [UIImage imageNamed:@"work_exe_old.png"];

myButton = [UIButton buttonWithType:UIButtonTypeCustom];

myButton.frame = CGRectMake(250,10,34,34);

myButton.tag=22;

[myButton setBackgroundImage:ButtonImage forState:UIControlStateNormal];

[myButton setBackgroundImage:ButtonImageSelected forState:UIControlStateSelected];

[myButton addTarget:self action:@selector(select_id:)forControlEvents:UIControlEventTouchDown];

您可以实现这样的选择器方法：

-(IBAction)select_id:(UIButton *) tempBtn {

  [tempBtn setSelected:! tempBtn.selected];
}

Answer 2

如果您想通过单击didSelectRowAtIndexPath执行一个操作，那么您必须实现UITableViewCell，然后按照下面的代码对按钮图像进行更改。

    -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

        switch (i) {
                case 0:
                   if(indexPath.row==0)
                     [tempBtn setImage:[UIImage imageNamed:@"work_exe.png"]    forState:UIControlStateNormal];
}
                 else if (indexPath.row==1)
{
  [tempBtn setImage:[UIImage imageNamed:@"work_exe.png"]    forState:UIControlStateNormal];
}
   else if (indexPath.row==2)
{
[tempBtn setImage:[UIImage imageNamed:@"work_exe.png"]    forState:UIControlStateNormal];
}
.
.
.
 else if (indexPath.row==n)
{
[tempBtn setImage:[UIImage imageNamed:@"work_exeN.png"]    forState:UIControlStateNormal];
}
                    i=1;
                    break;
                case 1:
                    if(indexPath.row==0)
                     [tempBtn setImage:[UIImage imageNamed:@"work_exe0.png"]    forState:UIControlStateNormal];
}
                 else if (indexPath.row==1)
{
  [tempBtn setImage:[UIImage imageNamed:@"work_exe1.png"]    forState:UIControlStateNormal];
}
   else if (indexPath.row==2)
{
[tempBtn setImage:[UIImage imageNamed:@"work_exe2.png"]    forState:UIControlStateNormal];
}
.
.
.
else if (indexPath.row==n)
{
[tempBtn setImage:[UIImage imageNamed:@"work_exeN.png"]    forState:UIControlStateNormal];
}
                    i=0;
                    break;

                default:
                    break;
            }

    [yourtablename reloadData];

注意:在cellForRowAtIndexPath方法之后编写这段代码

Answer 3

为每个控件状态设置uibutton的背景图像，

例如：

UIImage *normal = [UIImage imageNamed:@"work_exe.png"];
UIImage *highlighted = [UIImage imageNamed:@"work_exe_old.png"];
UIImage *selected = [UIImage imageNamed:@"work_exe_old.png"];

[myButton setBackgroundImage:normal forState:UIControlStateNormal];
[myButton setBackgroundImage:highlighted forState:UIControlStateHighlighted];
[myButton setBackgroundImage:selected forState:UIControlStateSelected];