swift总结2

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1/ 创建一个可变数组

var dataList: NSMutableArray = ["qqqqq","wwwwwwww","eeeeeee","rrrrrrrrrr","tttttttt","yyyyyyyyyy","uuuuuuuuuuuu","iiiiiiiiiiii","oooooooooooo","ppppppppppp","aaaaaaaaaa","ssssssssss","ddddddddddd","ffffffffff","ggggggggggggg","hhhhhhhhhhhhh"];

2/ 闭包相当于 OC 中的 block

var zyTableView:UITableView ={

var tempTableView = UITableView (frame: self.view.bounds)

tempTableView.delegate =self

tempTableView.dataSource =self

return tempTableView

}()

3/ cell 的定义及 cell 左滑 cell 移动

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

{

let identifier: String = "Cell"

var cell: UITableViewCell = tableView.dequeueReusableCellWithIdentifier("cell")

if !(cell != nil) {

var cell = UITableViewCell (style:UITableViewCellStyle.Subtitle, reuseIdentifier:"cell")

}

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

return cell

}

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {

if(editingStyle == UITableViewCellEditingStyle.Delete){

dataList.removeObjectAtIndex(indexPath.row)

tableView .deleteRowsAtIndexPaths([indexPath], withRowAnimation:UITableViewRowAnimation.Middle)

}elseif(editingStyle == UITableViewCellEditingStyle.Insert){

dataList .insertObject("章鱼哥", atIndex: indexPath.row+1)

let zyIndexPath = NSIndexPath (forRow: indexPath.row+1, inSection: indexPath.section)

zyTableView .insertRowsAtIndexPaths([zyIndexPath], withRowAnimation:UITableViewRowAnimation.Middle)

}

func tableView(tableView: UITableView, editingStyleForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCellEditingStyle {

if(indexPath.row %2 == 1){

returnUITableViewCellEditingStyle.Insert

}

else{

returnUITableViewCellEditingStyle.Delete

}

func tableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath) {

let source: AnyObject =self.dataList[sourceIndexPath.row]

dataList .removeObjectAtIndex(sourceIndexPath.row)

dataList .insertObject(source, atIndex: destinationIndexPath.row)

}

4/ UIScrollview

var zyScrollView:UIScrollView = {

var tempScrollView: UIScrollView = UIScrollView()

tempScrollView.frame = self.view.frame

tempScrollView.delegate =self

//设置边距

tempScrollView.contentInset =UIEdgeInsetsMake(20,20, 20, 20)

//不显示水平滚动标示

tempScrollView.showsHorizontalScrollIndicator =false

//不显示垂直滚动标示

tempScrollView.showsVerticalScrollIndicator =false

//设置偏移

// *** 偏移位置

tempScrollView.contentOffset =CGPointMake(0, -100)

//取消弹簧效果，内容固定，不希望出现弹簧效果时

// 不要跟bounds属性搞混了

tempScrollView.bounces =false

// 设置最大/最小缩放比例

tempScrollView.minimumZoomScale =CGFloat(0.2)

tempScrollView.maximumZoomScale =CGFloat(2.0)

tempScrollView.backgroundColor =UIColor .cyanColor()

return tempScrollView

}()

//让图像视图根据图像自动调整大小

tempImage .sizeToFit()

6/ UIScrollview 代理方法缩放

/**

1> 设置了代理

2> 指定了最大、最小的缩放比例

表示ScrollView是可以缩放的

代理方法的"返回值"实际上就是控制器告诉滚动视图，要缩放的是UIImageView

// 告诉ScrollView要缩放的视图是谁，具体的缩放实现，是由ScrollView来完成的

// 1> scrollView要知道缩放谁

func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {

return self.zyImageView;

}

// 2>滚动视图即将开始缩放，通常不需要写

func scrollViewWillBeginZooming(scrollView: UIScrollView, withView view: UIView?) {

print(__FUNCTION__)

}

// 3>正在缩放，通常也不需要实现

func scrollViewDidZoom(scrollView: UIScrollView) {

print(__FUNCTION__)

print(NSStringFromCGAffineTransform(zyImageView.transform))

}

func scrollViewDidEndZooming(scrollView: UIScrollView, withView view: UIView?, atScale scale:CGFloat) {

print(__FUNCTION__)

}

7/ 可变高度的cell 需要用代码创建

（1）在tableview的控制器中添加 XXFrames的可变数组

var messageFrames:NSMutableArray = {

let array: NSArray =NSArray (contentsOfFile: NSBundle .mainBundle() .pathForResource("messages.plist", ofType:nil)! )!

var arrayM:NSMutableArray = NSMutableArray()

var dictionary: NSDictionary =NSDictionary()

for dictionary in array{

var message: ZYMessage =ZYMessage(dictionary: dictionary as! NSDictionary)

let lastFm: ZYMessageFrame? = arrayM.lastObjectas? ZYMessageFrame

let string: NSString = message.time

let messageFrame: ZYMessageFrame = ZYMessageFrame()

messageFrame.message = message

arrayM.addObject(messageFrame)

}

return arrayM

}()

（2）XXFrames 数组存的事 XXFrame元素（含有 XX 的模型数据）

（3）定义XX 模型数据

class ZYMessage:NSObject {

overrideinit(){

super.init()

}

／／添加的属性需要在cell中展示的数据

var text:NSString =""

var time:NSString =""

init(dictionary: NSDictionary) {

super.init()

text = dictionary .objectForKey("text")as! NSString

time = dictionary .objectForKey("time")as! NSString

}

class func messageWithDict(dictionary:NSDictionary) -> ZYMessage{

return ZYMessage(dictionary: dictionary)

}

（4）定义XXFrame 类

class ZYMessageFrame:NSObject {

／／分别定义cell中各控件的 frame

let padding: CGFloat =10

let textPadding: CGFloat =20

var textF: CGRect = CGRectZero

var timeF: CGRect = CGRectZero

var iconF: CGRect = CGRectZero

var cellHeight: CGFloat =0

let maxF =CGFloat(MAXFLOAT)

var message: ZYMessage? =nil{

didSet{

timeF = CGRectMake(timeX, timeY, timeW, timeH）

iconF = CGRectMake(iconX, iconY, iconW, iconH)

//根据文字长度求宽高

let textSize = message!.text.boundingRectWithSize(CGSizeMake(150,maxF), options: NSStringDrawingOptions.UsesLineFragmentOrigin, attributes: [NSFontAttributeName:UIFont .systemFontOfSize(15)], context: nil).size

//4. cell的高度

let iconMaxY = CGRectGetMaxY(iconF)

let textMaxY = CGRectGetMaxY(textF)

cellHeight = max(iconMaxY, textMaxY)

}

（5）在控制器中返回的cell高度

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

let messageFrame: ZYMessageFrame = self.messageFrames[indexPath.row]as! ZYMessageFrame

return messageFrame.cellHeight

}

（6）在cell中传入的数据也是 XXFrame 而不是 XX数据模型

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

var cell:ZYTalkTableViewCell? = tableView.dequeueReusableCellWithIdentifier(ID)as? ZYTalkTableViewCell

if (cell == nil) {

cell =ZYTalkTableViewCell (style: UITableViewCellStyle.Default, reuseIdentifier:ID)

}

cell?.messageFrame =messageFrames[indexPath.row]as! ZYMessageFrame

return cell!

}

（7）自定义cell

class ZYTalkTableViewCell:UITableViewCell {

let textPadding: CGFloat =20

var timeLabel:UILabel = UILabel()

var icomImageView: UIImageView = UIImageView ()

var button: UIButton =UIButton ()

var messageFrame: ZYMessageFrame = ZYMessageFrame(){

didSet{

let message:ZYMessage = messageFrame.message!

//1. 时间

timeLabel.frame =messageFrame.timeF

timeLabel.text = message.timeas String

icomImageView.frame =messageFrame.iconF

//3. 正文

button .setTitle(message.textas String, forState:UIControlState.Normal)

button.frame =messageFrame.textF

}

override func awakeFromNib() {

super.awakeFromNib()

// Initialization code 加载XIB后的初始化代码

}

override func setSelected(selected:Bool, animated: Bool) {

super.setSelected(selected, animated: animated)

// Configure theb view for the selected state

}

按照这个样式来写初始化方法

override init(style:UITableViewCellStyle, reuseIdentifier: String?) {

super.init(style: style, reuseIdentifier: reuseIdentifier)

//1. 时间

timeLabel.textAlignment =NSTextAlignment.Center

timeLabel.font =UIFont .systemFontOfSize(13.0)

self.contentView .addSubview(timeLabel)

//2. 头像

self.contentView .addSubview(icomImageView)

//3. 正文

button.titleLabel?.font =UIFont .systemFontOfSize(15.0)

button.titleLabel?.numberOfLines =0

button.setTitleColor(UIColor .blackColor(), forState:UIControlState.Normal)

button.contentEdgeInsets =UIEdgeInsetsMake(textPadding,textPadding, textPadding,textPadding)

self.contentView .addSubview(button)

self.backgroundColor =UIColor .clearColor()

}

这个函数必须加

required init(coder aDecoder: NSCoder) {

fatalError("init(coder:) has not been implemented")

}

func resizeImageWithName(name: String) -> UIImage{

let image: UIImage = UIImage (named : name)!

let w = image.size.width *0.5 - 1

let h = image.size.height *0.5 - 1

return image .resizableImageWithCapInsets(UIEdgeInsetsMake(h, w, h, w))

}

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