ios - 如何在 cellforrowatindexpath 之后更新自定义表格单元格中的 UIButton 图像？

Question

我的表格 View 中有一个按钮，它应该在被点击后发生变化。

在我的 cellforrowatindexpath 中，我有

 [cell.graphicButton addTarget:self action:@selector(changeGraphic:)forControlEvents:UIControlEventTouchUpInside];

应该调用 changeGraphic(更改图形)。调用成功，但在 changeGraphic 中图像没有改变。

- (IBAction)changeGraphic:sender
{


    buttonState++;
// button state is an int, im not using BOOl because I have more than 2 images to change from, but for this question i only included 2
    if(buttonState == 2){
        buttonState = 0;
    }
    // 1 = travel time 2 =activity time 3 = total time
    if (buttonState == 0) {



         [cell.vicinitimeGraphicButton setBackgroundImage:[UIImage imageNamed:@"travelDistanceGraphicGreen.png"] forState:UIControlStateNormal];
    }

    if (buttonState == 1) {


         [cell.vicinitimeGraphicButton setBackgroundImage:[UIImage imageNamed:@"activityTimeGraphicGreen.png" ] forState:UIControlStateNormal];
    }

[self.tableView beginUpdates];
[self.tableView reloadData];
[self.tableView endUpdates];

当我在 changeGraphic 方法中记录内容时，它返回正常。我是否正确更新了 UIButton 的图像？

Answer 1

应该是

[cell.vicinitimeGraphicButton setImage:[UIImage imageNamed:@"travelDistanceGraphicGreen.png"] forState:UIControlStateNormal];

代替

[cell.vicinitimeGraphicButton setBackgroundImage:[UIImage imageNamed:@"travelDistanceGraphicGreen.png"] forState:UIControlStateNormal];

在我的例子中，图像被创建为背景