Question

我已设置delegate＆amp; datasource of tableview in swift和section of section返回正确的值，但numberOfRowsInSection总是返回4.所以我有两个问题

我不知道为什么它总是会回来4。

当节数为5时，为什么numberOfRowsInSection被多次调用，大于5。

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    println("No of Sections: \(self.contactArr.count)")

    if self.contactArr.count > 0{
        return self.contactArr.count
    }
    else{
        return 0
    }
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    println("Current Section \(section)")
    var contactDic : NSDictionary       = self.contactArr.objectAtIndex(section) as! NSDictionary
    var lcontactArr : NSMutableArray    = contactDic["contact"] as! NSMutableArray

    return lcontactArr.count;
}

输出

No of Sections: 5
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4
Current Section 4

我的联系人数组是：

Contacts =         (
                        {
                contact =                 (
                                        {
                        date = "2015-09-07 05:00:30";
                        message = "Dear Dr. sund, Everything is going well, I can't give you an expected finish time yet.";
                        name = sund;
                        prefix = "<null>";
                        "user_messsage_id" = 3;
                    }
                );
            },
                        {
                contact =                 (
                                        {
                        date = "2015-09-07 05:38:23";
                        message = "Dear Dr. Krishan Kumar Sharma, We are in the Recovery Room, everything went well.";
                        name = "Krishan Kumar Sharma";
                        prefix = "Dr.";
                        "user_messsage_id" = 4;
                    },
                                        {
                        date = "2015-09-07 07:51:57";
                        message = "Dear Mr. Krishan Kuram Sharma, In the Recovery Room, everything went well, someone will speak with you soon.";
                        name = "Krishan Kumar Sharma";
                        prefix = "Dr.";
                        "user_messsage_id" = 4;
                    }
                );
            },
                        {
                contact =                 (
                                        {
                        date = "2015-09-22 02:37:21";
                        message = "Dear Mr. xyz, Everything is going well, I can't give you an expected finish time yet.";
                        name = xyz;
                        prefix = "Mr.";
                        "user_messsage_id" = 19;
                    }
                );
            },
                        {
                contact =                 (
                                        {
                        date = "2015-09-28 09:28:26";
                        message = "Dear Mr. tester, Everything is going well, I can't give you an expected finish time yet.";
                        name = tester;
                        prefix = "Mr.";
                        "user_messsage_id" = 20;
                    },
                                        {
                        date = "2015-09-28 09:31:39";
                        message = "Dear Mr. tester, Everything is going well, we expect to finish within the next hour.";
                        name = tester;
                        prefix = "Mr.";
                        "user_messsage_id" = 20;
                    },
                                        {
                        date = "2015-09-28 09:32:01";
                        message = "Dear Mr. tester, We are in the Recovery Room, everything went well.";
                        name = tester;
                        prefix = "Mr.";
                        "user_messsage_id" = 20;
                    }
                );
            },
                        {
                contact =                 (
                                        {
                        date = "2015-09-29 03:08:33";
                        message = "Dear Mr. Jackson, Everything is going well, I can't give you an expected finish time yet.";
                        name = Jackson;
                        prefix = "<null>";
                        "user_messsage_id" = 24;
                    }
                );

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Answer 1

调整了一些数据结构＆amp;在您的代码中输入类型，我尝试了一个示例POC，它对我来说很好。你可以试试这段代码吗。

import UIKit

class ViewController: UIViewController,UITableViewDelegate, UITableViewDataSource {

var tableView: UITableView  =   UITableView()

var contactDict1 : Dictionary = ["contact" : ["C1", "C2", "C3", "C4"]]
var contactDict2 : Dictionary = ["contact" : ["C11", "C21", "C31", "C41"]]
var contactDict3 : Dictionary = ["contact" : ["C12", "C22", "C32", "C42"]]
var contactDict4 : Dictionary = ["contact" : ["C13", "C23", "C33", "C43"]]
var contactDict5 : Dictionary = ["contact" : ["C14", "C24", "C34", "C44"]]

var contactArr : [Dictionary<String, Array<String>>] = []

override func viewDidLoad() {
    super.viewDidLoad()

    contactArr = [contactDict1, contactDict2, contactDict3, contactDict4, contactDict5]

    // Do any additional setup after loading the view, typically from a nib.

    tableView.frame         =   self.view.frame
    tableView.delegate      =   self
    tableView.dataSource    =   self

    tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")

    self.view.addSubview(tableView)
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    print("No of Sections: \(self.contactArr.count)")

    if self.contactArr.count > 0 {
        return self.contactArr.count
    }
    else{
        return 0
    }
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    print("Current Section \(section)")

    let contactDic = self.contactArr[section] as Dictionary

    print("contactDic = \(contactDic)")

    let lcontactArr = contactDic["contact"]! as Array<String>

    return lcontactArr.count;
}


func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell:UITableViewCell = tableView.dequeueReusableCellWithIdentifier("cell")!

    let contactDic = self.contactArr[indexPath.section] as Dictionary
    let lcontactArr = contactDic["contact"]! as Array<String>

    cell.textLabel?.text = lcontactArr[indexPath.row] as String

    return cell
}
}

numberOfRowsInSection始终在swift中返回修复值

1 个答案: