Question

我当前正在基于称为内容构建器的类中的内容删除和插入行。下面是一个示例。

func stateDidChange(id: String, _ state: Bool) {

    switch id {
    case ConfigureExerciseContentBuilderKeys.accessory.rawValue:
        exerciseProgramming.isAccessory = state

        if state {

            if let customIncrementsItemIndex = self.configureExerciseContentBuilder.getContent().firstIndex(where: { ($0 as? FormLabelTextFieldItem)?.id == ConfigureExerciseContentBuilderKeys.increment.rawValue }),
               let syncedWorkoutsItemIndex = self.configureExerciseContentBuilder.getContent().firstIndex(where: { ($0 as? ExerciseSyncedWorkouts)?.id == ConfigureExerciseContentBuilderKeys.syncedWorkouts.rawValue }) {
                self.configureExerciseContentBuilder = ConfigureExerciseContentBuilder(type: type, exerciseProgramming: exerciseProgramming)

                let incrementsIndexPath = IndexPath(item: customIncrementsItemIndex, section: 0)
                let syncedIndexPath = IndexPath(item: syncedWorkoutsItemIndex, section: 0)
                let spacerIndexPath = IndexPath(item: syncedWorkoutsItemIndex + 1, section: 0)

                self.tableView.beginUpdates()
                self.tableView.deleteRows(at: [incrementsIndexPath, syncedIndexPath, spacerIndexPath], with: .automatic)
                self.tableView.endUpdates()
            }
        } else {

            self.configureExerciseContentBuilder = ConfigureExerciseContentBuilder(type: type, exerciseProgramming: exerciseProgramming)

            if let customIncrementsItemIndex = self.configureExerciseContentBuilder.getContent().firstIndex(where: { ($0 as? FormLabelTextFieldItem)?.id == ConfigureExerciseContentBuilderKeys.increment.rawValue }),
               let syncedWorkoutsItemIndex = self.configureExerciseContentBuilder.getContent().firstIndex(where: { ($0 as? ExerciseSyncedWorkouts)?.id == ConfigureExerciseContentBuilderKeys.syncedWorkouts.rawValue }) {

                let incrementsIndexPath = IndexPath(item: customIncrementsItemIndex, section: 0)
                let syncedIndexPath = IndexPath(item: syncedWorkoutsItemIndex, section: 0)
                let spacerIndexPath = IndexPath(item: syncedWorkoutsItemIndex + 1, section: 0)

                self.tableView.beginUpdates()
                self.tableView.insertRows(at: [incrementsIndexPath, syncedIndexPath, spacerIndexPath], with: .automatic) // Insert into the index of where the accessory row was/is
                self.tableView.endUpdates()
            }
        }

    default:
        break
    }
}

根据上面的逻辑，行已成功删除和插入，我使用了自动参数，以便表视图可以最佳方式进行处理。

还值得注意的是，在tableviewcell中，autolayout用于其中的元素，并且我已根据其内容将tableview中的行高配置为动态行。

但是由于某些原因，当我删除或插入随附视频中的绿色框的行时，似乎出现了奇怪的断断续续的动画。有人对为什么会发生这种情况有任何指示/想法吗？

Link to video

UITableViewCell具有不稳定的行插入/删除动画

0 个答案: