swift中UITableView的使用（分组功能，类似于QQ群组）

https://github.com/potato512/SYSwiftLearning



// MARK: - 数据
func setLocalData()
{
self.mainArray = NSMutableArray()

for number in 1...10
{
let rowArray:NSMutableArray = NSMutableArray()
for rowNumber in 1...5
{
let rowNumberTmp = random() % 1000 + rowNumber
rowArray.addObject(String(rowNumberTmp))
}

let dict:NSMutableDictionary = NSMutableDictionary()
// cell值
dict.setObject(rowArray, forKey: "rowCell")
// 页眉，页脚标题
let numberTmp = random() % 1000 + number
dict.setObject(String(format: "headerTitle：%@", arguments: [String(numberTmp)]), forKey: "rowHeader")
dict.setObject(String(format: "footerTitle：%@", arguments: [String(numberTmp)]), forKey: "rowFooter")
// cell展开，或收起来状态
dict.setObject(((number % 2 == 0) ? true : false), forKey: "rowStatus")

self.mainArray.addObject(dict)
}
}

// MARK: - 视图
func setUI()
{
// 列表样式分plain，grouped，其中grouped在列表有页眉，页脚时会随cell滚动，而plain则是先固定后滚动
self.mainTableView = UITableView(frame: self.view.bounds, style: UITableViewStyle.Grouped)
self.view.addSubview(self.mainTableView)
self.mainTableView.backgroundColor = UIColor.clearColor()
self.mainTableView.delegate = self
self.mainTableView.dataSource = self
self.mainTableView.autoresizingMask = UIViewAutoresizing.FlexibleHeight
self.mainTableView.tableFooterView = UIView()
}

// MARK: - statusClick
func statusClick(button:UIButton)
{
let section = button.tag

let dict:NSMutableDictionary! = self.mainArray[section] as! NSMutableDictionary
let status:Bool! = dict.objectForKey("rowStatus") as! Bool
dict.setObject((status.boolValue ? false : true), forKey: "rowStatus")

self.mainArray.replaceObjectAtIndex(section, withObject: dict)

self.mainTableView.reloadSections(NSIndexSet(index: section), withRowAnimation: .None)
}

// MARK: - UITableViewDataSource, UITableViewDelegate

// 分组
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return self.mainArray.count
}

// MARK: 页眉视图
func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 40.0
}

//    func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
//
//        let dict:NSDictionary! = self.mainArray[section] as! NSDictionary
//        let title:String! = dict.objectForKey("rowHeader") as! String
//
//        return title
//    }

// 自定义页眉（注意：自定义时，高度与代理方法中的高度一致，同时代理方法中的标题失效）
func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {

let view = UIButton(frame: CGRectMake(0.0, 0.0, CGRectGetWidth(self.mainTableView.frame), 40.0))
view.backgroundColor = UIColor.greenColor()
view.contentHorizontalAlignment = .Center
view.setTitleColor(UIColor.blackColor(), forState: .Normal)
view.setTitleColor(UIColor.redColor(), forState: .Highlighted)

// 响应事件，用于修改cell显示状态，即打开，或收起来
view.tag = section
view.addTarget(self, action: Selector("statusClick:"), forControlEvents: .TouchUpInside)

let dict:NSDictionary! = self.mainArray[section] as! NSDictionary
let title:String! = dict.objectForKey("rowHeader") as! String
view.setTitle(title, forState: .Normal)

return view
}

// MARK: 页脚视图
func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 20.0
}

//    func tableView(tableView: UITableView, titleForFooterInSection section: Int) -> String? {
//
//        let dict:NSDictionary! = self.mainArray[section] as! NSDictionary
//        let title:String! = dict.objectForKey("rowFooter") as! String
//
//        return title
//    }

// 自定义页脚（注意：自定义时，高度与代理方法中的高度一致，同时代理方法中的标题失效）
func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {

let view = UILabel(frame: CGRectMake(0.0, 0.0, CGRectGetWidth(self.mainTableView.frame), 40.0))
view.backgroundColor = UIColor.yellowColor()
view.textAlignment = .Center

let dict:NSDictionary! = self.mainArray[section] as! NSDictionary
let title:String! = dict.objectForKey("rowFooter") as! String
view.text = title

return view
}

// MARK: cell单元格
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

let dict:NSDictionary! = self.mainArray[section] as! NSDictionary
let status:Bool! = dict.objectForKey("rowStatus") as! Bool
if status.boolValue
{
let array:NSArray! = dict.objectForKey("rowCell") as! NSArray
return array.count
}

return 0
}

func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 60.0
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell:UITableViewCell! = tableView.dequeueReusableCellWithIdentifier("UITableViewCell")
if cell == nil
{
cell = UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: "UITableViewCell")

cell.textLabel!.adjustsFontSizeToFitWidth = true
cell.textLabel!.font = UIFont.systemFontOfSize(12.0)

cell.detailTextLabel!.font = UIFont.systemFontOfSize(20.0)
cell.detailTextLabel!.textColor = UIColor.redColor()
}

let text = String(format: "%@", arguments: [indexPath])
cell.textLabel!.text = text

let dict:NSDictionary! = self.mainArray[indexPath.section] as! NSDictionary
let array:NSArray! = dict.objectForKey("rowCell") as! NSArray
let title:String! = array.objectAtIndex(indexPath.row) as! String
cell.detailTextLabel!.text = title

return cell
}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
tableView.deselectRowAtIndexPath(indexPath, animated: true)
}