开关函数中的预期表达式错误 - Objective-C

Question

我正在学习 switch 功能，所以我将 if 和 else 语句更改为这样：

但它给了我“预期的表达”错误。

为什么？

switch (indexPath.section) {

    case 0: return {
        cell.textLabel.text = FileANames[indexPath.row];
        cell.detailTextLabel.text = FileADetails[FileANames[indexPath.row]];
    }

    case 1: return {
        cell.textLabel.text = FileBNames[indexPath.row];
        cell.detailTextLabel.text = FileBDetails[FileBNames[indexPath.row]];
    }

    case 2: return {
        cell.textLabel.text = FileCNames[indexPath.row];
        cell.detailTextLabel.text = FileCDetails[FileCNames[indexPath.row]];
    }

    default: return cell;
}

//这个是对的

if (indexPath.section == 0) {
    cell.textLabel.text = FileANames[indexPath.row];
    cell.detailTextLabel.text = FileADetails[FileANames[indexPath.row]];
}

else if (indexPath.section == 1) {
    cell.textLabel.text = FileBNames[indexPath.row];
    cell.detailTextLabel.text = FileBDetails[FileBNames[indexPath.row]];
}

else if (indexPath.section == 2) {
    cell.textLabel.text = FileCNames[indexPath.row];
    cell.detailTextLabel.text = FileCDetails[FileCNames[indexPath.row]];
}

return cell;
}

谢谢。

Answer 1

应该是这个

switch (indexPath.section) {

    case 0:  {
        cell.textLabel.text = FileANames[indexPath.row];
        cell.detailTextLabel.text = FileADetails[FileANames[indexPath.row]];
        break;
    }

    case 1: {
        cell.textLabel.text = FileBNames[indexPath.row];
        cell.detailTextLabel.text = FileBDetails[FileBNames[indexPath.row]];
        break;
    }

    case 2: {
        cell.textLabel.text = FileCNames[indexPath.row];
        cell.detailTextLabel.text = FileCDetails[FileCNames[indexPath.row]];
        break;
    }

default: break;
}

return cell;