Question

我创建了两个名为第一部分和第二部分的数组，用于将数据输入到我的表中。

sectionTitles

我创建了一个名为let sectionTitles = ["Section1" , "Sectoin2"]的数组，其中包含我的部分名称。

public func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?{
    return sectionTitles[section]

    }
    public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
        switch section {
        case 0 :
            return Sec1.count
        default:
            return Sec2.count

        }

    }
    public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
        let cell = challengeTable.dequeueReusableCell(withIdentifier: cellID) as! CustomisedCell
        cell.selectionStyle = .none

        switch indexPath.section {
        case 0:
            cell.CAChallengeTitle.text = Sec1[indexPath.row]
            cell.CAChallengeDescription.text = "\(Sec1[indexPath.row])  "
            cell.CAChallengeButt.tag = indexPath[1]
            cell.CAChallengeButt.setTitle("I am interested >", for: .normal)
            print("Done with sectoin 0")
        default:
            cell.CAChallengeTitle.text = Sec2[indexPath.row]
            cell.CAChallengeDescription.text = "\(Sec2[indexPath.row])  "
            cell.CAChallengeButt.tag = indexPath[1]
            cell.CAChallengeButt.setTitle("I am interested >", for: .normal)
            print("Done with sectoin 1")

        }
       return cell

    }

    public func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat{
        let height : CGFloat  = 60
        return height
    }

然后我有以下委托表视图函数：

    #!/bin/bash

    # Athena queries are fundamentally Asynchronous.  So we have to :
    # 1) Make the query, and tell Athena where in s3 to put the results (tell it the same place as the UI uses).
    # 2) Wait for the query to finish
    # 3) Pull down the results and un-wacky-Jsonify them.


    # run the query, use jq to capture the QueryExecutionId, and then capture that into bash variable
    queryExecutionId=$(
        aws athena start-query-execution \
        --query-string "SELECT Count(*) AS numBooks FROM books" \
        --query-execution-context "Database=demo_books" \
        --result-configuration "OutputLocation"="s3://whatever_is_in_the_athena_UI_settings" \
        --region us-east-1 | jq -r ".QueryExecutionId"
    )

    echo "queryExecutionId was ${queryExecutionId}"


    # Wait for the query to finish running.
    # This will wait for up to 60 seconds (30 * 2)
    for i in $(seq 1 30); do

        queryState=$(
            aws athena get-query-execution --query-execution-id "${queryExecutionId}"  --region us-east-1 | jq -r ".QueryExecution.Status.State"
        );

        if [[ "${queryState}" == "SUCCEEDED" ]]; then
            break;
        fi;

        echo "  Awaiting queryExecutionId ${queryExecutionId} - state was ${queryState}"

        if [[ "${queryState}" == "FAILED" ]]; then
            # exit with "bad" error code
            exit 1;
        fi;

        sleep 2
    done


    # Get the results.
    aws athena get-query-results \
        --query-execution-id "${queryExecutionId}" \
        --region us-east-1 > numberOfBooks_wacky.json

    # Todo un-wacky the json with jq or something
    # cat numberOfBooks_wacky.json | jq -r ".ResultSet.Rows[] | .Data[0].VarCharValue"

但最后我只能出示第一部分。知道我在哪里弄错了吗？

Answer 1

您尚未实施numberOfSections数据源方法。

func numberOfSections(in tableView: UITableView) -> Int {
    return sectionTitles.count
}

如果没有这个，该表假定有1个部分。

Answer 2

您必须实现tableView的numberOfRowsInSection方法如果您只使用静态sactions，则必须返回numberOfRowsInSection方法中的节数。否则，将所有部分存储在一个数组中并返回 Array.count

为什么我只能在TableView Swift中展示我的第一部分？

2 个答案: