Three20软件引擎之构建开发环境与第一个项目HelloWorld（一）

Three20软件引擎之构建开发环境与HelloWorld

雨松MOMO原创文章如转载，请注明：转载自雨松MOMO的博客原文地址:http://blog.csdn.net/xys289187120/article/details/7017432

亲爱的朋友们，如果你现在在做IOS 软件开发，不妨来看看Three20这套框架。如果你对它还比较陌生？MOMO在这里告诉你它绝对是一个IOS 软件开发的利器，有了它绝对让你的软件事半功倍。three20框架的前身是facebook iPhone 客户端。 后来facebook将其开源了，就有了three20这个框架。据说开发这套引擎的这个程序大牛 facebook为了挖他直接把他所在的公司买下来了，我心里就琢磨这人也太牛了吧。做了一个客户端 开源后直接就变成流行引擎了。真的是让我辈望尘莫及啊～～ 哈哈 废话不多说了我们进入正题。

在Xcode4上构建three20框架

首先进入Three20官网去下载最新版本

http://three20.info/roadmap/1.0.6.2

进入官网后，如下图所示点击Download下载最新版本，目前最新版本为1.0.6.2。

下载完毕后解压缩，由于Three20目前别说国内的资料少了，国外的资料都不多。不过开发包中附带了几个Demo，MOMO 先在这里赞一下!这两天我就是靠这几个Demo来学习的。Demo的路径在下载包samples 文件夹中，一共9个Demo，建议想用Three20框架开发的盆友们 一定要好好读一读这几个Demo，比去网上找资料强多了!

大家看看官网的说明， 如何在Xcode4上添加Three20框架。我懒得翻译了～～

Xcode 4 Transition Guide

Apple is aiming for Xcode 4 to be the primary iOS development environment and, as a result, many will need to transition from Xcode 3.2 to Xcode 4. This guide has been put together in order to help you migrate your apps to Xcode 4 successfully.

What you need to do

For existing projects

If you want to start using Xcode 4 with an existing project made using Xcode 3.2.#, all you need to do to update your project is run ttmodule again like so:

重点在这里，先创建好一个普通的IOS 工程，打开mac电脑的终端去执行下面这段python 脚本

three20/sre/scripts/ttmodule.py : 须要执行的脚本文件

path/to/your/project.xcodeproj : IOS 工程路径

这里强调一下，不要使用cd 到scripts路径下在去执行这段脚本，因为这样的话有时候会提示无效的命令，所以大家还是老老实实去输入自己的完整路径吧。

> python three20/src/scripts/ttmodule.py -p path/to/your/project/project.xcodeproj Three20 --xcode-version=4

python脚本执行完毕后，就应该环境就搭建完毕了 ，快快打开工程检查一下，如下图所示，安装成功后打开工程后在Frameworks中会出现很多Three20的相关的东西。 如果到这一步还是没有出现这些Frameworks文件，那么请仔细阅读上面的博文检查一下自己的步骤。

到这一步就彻底安装成功了，下面开始构建我们第一个项目HelloWorld。

#import <UIKit/UIKit.h>

int main(int argc, char *argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    int retVal = UIApplicationMain(argc, argv, nil, @"Three20AppDelegate");
    [pool release];
    return retVal;
}

学过IOS开发的朋友绝对不会陌生，在项目中须要使用Three20库的时候须要import一下～

#import <Three20/Three20.h>

URL 简直就是three20 亮点中的亮点，实在是太好用了。有可能是因为facebook是互联网公司的原因吧，他们的引擎的原理都很像www.xx.com 这种网址的结构，因为手机不像PC 不可能同时显示多个页面，那么用URL这种方式去切换界面实在是太给力了～会省下很多逻辑判断切换界面的代码，直接去维护这个URL 就可以，由于本章主要是构建Three20框架，所以MOMO在这里只带大家学习入门的知识， 后期我肯定会详细的介绍TTURLMap 这个类，因为它实在是太好用了，哇咔咔.

举个例子

tt://Myview/1

tt://Myview/2

上面是两个软件界面，实现界面的切换的方法就好比我们在浏览器中输入网址一样，输入网址1 就进1 输入网址2 就进 2，一切事件的处理three20 都帮我们做了。

#import "Three20AppDelegate.h"
#import "MyViewController.h"
@implementation Three20AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  
    //创建导航条
    TTNavigator* navigator = [TTNavigator navigator];
    navigator.persistenceMode = TTNavigatorPersistenceModeAll;
    navigator.window = [[[UIWindow alloc] initWithFrame:TTScreenBounds()] autorelease];
     
    
    //TTURLMap 非常重要的一个属性
    //界面的点击切换完全取决与它的设定
    TTURLMap* map = navigator.URLMap;
    
    //如果须要访问wab页面的话 就必需添加
    [map from:@"*" toViewController:[TTWebController class]];
   
    //拼一个url 意思是如果访问 "tt://MyView" 会进入 MyViewController class
    [map from:@"tt://MyView" toSharedViewController:[MyViewController class]];
    
    
    if (![navigator restoreViewControllers]) {
        //打开上面设置的url
        [navigator openURLAction:[TTURLAction actionWithURLPath:@"tt://MyView"]];
    }
    
    return YES;
}



- (void)dealloc
{
   
    [super dealloc];
}

@end

由于在程序入口中就将URL 指向这里 ，所以在这里添加显示view等等。

#import "MyViewController.h"
#import <Three20Style/UIColorAdditions.h>
@implementation MyViewController

- (void)loadView {
      [super loadView];
    //创建一个可滑动的view
    UIScrollView* scrollView = [[[UIScrollView alloc] initWithFrame:TTNavigationFrame()] autorelease];
	scrollView.autoresizesSubviews = YES;
	scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    //背景颜色
    scrollView.backgroundColor = [UIColor whiteColor];
    self.view = scrollView;

    //标题内容
    self.title = @"雨松MOMO程序开发" ;
  
    //设置雨松MOMO头像图片
    CGRect frame  = CGRectMake(100, 10, 120, 120);
    TTImageView *imageView = [[TTImageView alloc] initWithFrame:frame];
    UIImage *image = [UIImage imageNamed:@"1.jpg"];
    imageView.defaultImage = image;
    [scrollView addSubview:imageView];
    
    //view风格 边框 颜色
    UIColor* black = RGBCOLOR(158, 163, 172);
    //view风格
    TTStyle*  style = [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
                       [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
                        [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]];
    
    frame = CGRectMake(5, 150, 310, 150);
    //新建一个TTView 将设置的风格赋值给它
    TTView *view = [[[TTView alloc] initWithFrame:frame] autorelease];
    //背景颜色
    view.backgroundColor = [UIColor whiteColor];
    //赋值风格
    view.style = style;
    
    //显示字符串 支持html语言
    NSString * text = @"爱加班，爱代码，爱HelloWorld , 爱学习，爱钻研，爱学无止境 爱玩游戏更爱做游戏，我是雨松MOMO，哇咔咔～ 我在参加2011年博客大赛 <a href=\"http://blog.51cto.com/contest2011/3361352\">点击为MOMO投上宝贵的一票</a>";
    
    frame = CGRectMake(10, 10, 290, 150);
    
    //TTStyledTextLabel 很给力啊这个 哈哈！
    TTStyledTextLabel* label = [[[TTStyledTextLabel alloc] initWithFrame:frame] autorelease];
    label.font = [UIFont systemFontOfSize:17];
    label.textColor = [UIColor redColor];  
    label.text = [TTStyledText textFromXHTML:text lineBreaks:YES URLs:YES];
    label.contentInset = UIEdgeInsetsMake(5, 5, 5, 5);
    [label sizeToFit];
   
    //将label添加入自定义view
    [view addSubview:label];
    //将自动一定view 显示在主view中！
    [scrollView addSubview:view];   

    
    

}



@end

到这一步，这个简单的HelloWorld程序就写完了，我们发现以前我们用到的高级界面的类基本上Three20都写了新的方法去继承，实现更佳好的效果，将麻烦的地方由引擎自身帮我们完成。看一下效果图。我添加特殊的风格View 显示text 支持html语言 可以在程序中随意添加网页链接、

下面MOMO在贴一段官方提供的Demo中的一段代码，主要是用来设置View风格. 官方一共提供了19种view风格，代码中使用循环将这19中view 依次显示在界面中，绝对够我们开发IOS应用程序啦 哈哈～～所以说官方提供的DEMO 大家一定要好好阅读喔 哇咔咔～～

- (void)loadView {
  UIScrollView* scrollView = [[[UIScrollView alloc] initWithFrame:TTNavigationFrame()] autorelease];
	scrollView.autoresizesSubviews = YES;
	scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
  scrollView.backgroundColor = RGBCOLOR(216, 221, 231);
  self.view = scrollView;

  UIColor* black = RGBCOLOR(158, 163, 172);
  UIColor* blue = RGBCOLOR(191, 197, 208);
  UIColor* darkBlue = RGBCOLOR(109, 132, 162);

  NSArray* styles = [NSArray arrayWithObjects:
    // Rectangle
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTSolidBorderStyle styleWithColor:black width:1 next:nil]],

    // Rounded rectangle
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],

    // Gradient border
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTLinearGradientBorderStyle styleWithColor1:RGBCOLOR(0, 0, 0)
                                 color2:RGBCOLOR(216, 221, 231) width:2 next:nil]]],

    // Rounded left arrow
    [TTShapeStyle styleWithShape:[TTRoundedLeftArrowShape shapeWithRadius:5] next:
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],

    // Partially rounded rectangle
    [TTShapeStyle styleWithShape:
      [TTRoundedRectangleShape shapeWithTopLeft:0 topRight:0 bottomRight:10 bottomLeft:10] next:
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],

    // SpeechBubble with pointer left of the centre on the top edge
    // Locations for top edge are 45 on the left, 90 in the centre, 134.999 on the right
    [TTShapeStyle styleWithShape:[TTSpeechBubbleShape shapeWithRadius:5 
                                                        pointLocation:60
                                                           pointAngle:90
                                                            pointSize:CGSizeMake(20,10)] next:
     [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
      [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],

     // SpeechBubble with pointer on the extreme left on the bottom edge
     // Locations for bottom edge are 225 on the left, 270 in the centre, 314.999 on the left
    [TTShapeStyle styleWithShape:[TTSpeechBubbleShape shapeWithRadius:5 
                                                        pointLocation:314
                                                           pointAngle:270
                                                            pointSize:CGSizeMake(20,10)] next:
     [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
      [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],
    
    // SpeechBubble with pointer on the bottom of the left edge
    // Locations for left edge are 315 on the bottom, 0 in the centre, 44.999 on top
    [TTShapeStyle styleWithShape:[TTSpeechBubbleShape shapeWithRadius:5 
                                                        pointLocation:315
                                                           pointAngle:0
                                                            pointSize:CGSizeMake(10,20)] next:
     [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
      [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],
    
    // SpeechBubble with pointer on the centre of the left edge
    // Locations for left edge are 315 on the bottom, 0 in the centre, 44.999 on top
    [TTShapeStyle styleWithShape:[TTSpeechBubbleShape shapeWithRadius:5 pointLocation:0
                                                           pointAngle:0
                                                            pointSize:CGSizeMake(20,10)] next:
     [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
      [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],
    
    // SpeechBubble with pointer on the bottom of the right hand edge
    // Locations for right edge are 135 on top, 180 in the middle, 314.999 on the bottom
    [TTShapeStyle styleWithShape:[TTSpeechBubbleShape shapeWithRadius:5 pointLocation:224
                                                           pointAngle:180
                                                            pointSize:CGSizeMake(15,15)] next:
     [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
      [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]],
    
    // Drop shadow
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
    [TTShadowStyle styleWithColor:RGBACOLOR(0,0,0,0.5) blur:5 offset:CGSizeMake(2, 2) next:
    [TTInsetStyle styleWithInset:UIEdgeInsetsMake(0.25, 0.25, 0.25, 0.25) next:
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTInsetStyle styleWithInset:UIEdgeInsetsMake(-0.25, -0.25, -0.25, -0.25) next:
    [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]]]]],

    // Inner shadow
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
    [TTSolidFillStyle styleWithColor:[UIColor whiteColor] next:
    [TTInnerShadowStyle styleWithColor:RGBACOLOR(0,0,0,0.5) blur:6 offset:CGSizeMake(1, 1) next:
    [TTSolidBorderStyle styleWithColor:black width:1 next:nil]]]],

    // Chiseled button
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
    [TTShadowStyle styleWithColor:RGBACOLOR(255,255,255,0.9) blur:1 offset:CGSizeMake(0, 1) next:
    [TTLinearGradientFillStyle styleWithColor1:RGBCOLOR(255, 255, 255)
                               color2:RGBCOLOR(216, 221, 231) next:
    [TTSolidBorderStyle styleWithColor:blue width:1 next:nil]]]],

    // Embossed button
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:10] next:
    [TTLinearGradientFillStyle styleWithColor1:RGBCOLOR(255, 255, 255)
                               color2:RGBCOLOR(216, 221, 231) next:
    [TTFourBorderStyle styleWithTop:blue right:black bottom:black left:blue width:1 next:nil]]],

    // Toolbar button
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:4.5] next:
    [TTShadowStyle styleWithColor:RGBCOLOR(255,255,255) blur:1 offset:CGSizeMake(0, 1) next:
    [TTReflectiveFillStyle styleWithColor:darkBlue next:
    [TTBevelBorderStyle styleWithHighlight:[darkBlue shadow]
                        shadow:[darkBlue multiplyHue:1 saturation:0.5 value:0.5]
                        width:1 lightSource:270 next:
    [TTInsetStyle styleWithInset:UIEdgeInsetsMake(0, -1, 0, -1) next:
    [TTBevelBorderStyle styleWithHighlight:nil shadow:RGBACOLOR(0,0,0,0.15)
                        width:1 lightSource:270 next:nil]]]]]],

    // Back button
    [TTShapeStyle styleWithShape:[TTRoundedLeftArrowShape shapeWithRadius:4.5] next:
    [TTShadowStyle styleWithColor:RGBCOLOR(255,255,255) blur:1 offset:CGSizeMake(0, 1) next:
    [TTReflectiveFillStyle styleWithColor:darkBlue next:
    [TTBevelBorderStyle styleWithHighlight:[darkBlue shadow]
                        shadow:[darkBlue multiplyHue:1 saturation:0.5 value:0.5]
                        width:1 lightSource:270 next:
    [TTInsetStyle styleWithInset:UIEdgeInsetsMake(0, -1, 0, -1) next:
    [TTBevelBorderStyle styleWithHighlight:nil shadow:RGBACOLOR(0,0,0,0.15)
                       width:1 lightSource:270 next:nil]]]]]],

    // Badge
    [TTShapeStyle styleWithShape:[TTRoundedRectangleShape shapeWithRadius:TT_ROUNDED] next:
    [TTInsetStyle styleWithInset:UIEdgeInsetsMake(1.5, 1.5, 1.5, 1.5) next:
    [TTShadowStyle styleWithColor:RGBACOLOR(0,0,0,0.8) blur:3 offset:CGSizeMake(0, 5) next:
    [TTReflectiveFillStyle styleWithColor:[UIColor redColor] next:
    [TTInsetStyle styleWithInset:UIEdgeInsetsMake(-1.5, -1.5, -1.5, -1.5) next:
    [TTSolidBorderStyle styleWithColor:[UIColor whiteColor] width:3 next:nil]]]]]],

    // Mask
    [TTMaskStyle styleWithMask:TTIMAGE(@"bundle://mask.png") next:
    [TTLinearGradientFillStyle styleWithColor1:RGBCOLOR(0, 180, 231)
                               color2:RGBCOLOR(0, 0, 255) next:nil]],

    // simple bottom only border
    [TTShapeStyle styleWithShape:[TTRectangleShape shape] next:
    [TTSolidFillStyle styleWithColor:RGBCOLOR(255, 255, 255) next:
    [TTFourBorderStyle styleWithTop:nil right:nil bottom:black left:nil width:5 next:nil]]],

    nil];

  CGFloat padding = 10.0f;
  CGFloat viewWidth = scrollView.width/2 - padding*2;
  CGFloat viewHeight = TT_ROW_HEIGHT;

  CGFloat x = padding;
  CGFloat y = padding;
  for (TTStyle* style in styles) {
    if (x + viewWidth >= scrollView.width) {
      x = padding;
      y += viewHeight + padding;
    }

    CGRect frame = CGRectMake(x, y, viewWidth, viewHeight);
    TTView* view = [[[TTView alloc] initWithFrame:frame] autorelease];
    view.backgroundColor = scrollView.backgroundColor;
    view.style = style;
    [scrollView addSubview:view];

    x += frame.size.width + padding;
  }

  scrollView.contentSize = CGSizeMake(scrollView.width, y + viewHeight + padding);
}

效果图

最后欢迎各位盆友可以和MOMO一起讨论Three20软件开发，这两天学Three20学的实在是太爽了～～如果你觉得看得不清楚，MOMO附带上本章的源码下载，希望大家可以一起学习 哈哈～。哇咔咔～ MOMO愿和 大家好好学习，大家一起进步哈～！！！

下载地址：http://download.csdn.net/detail/xys289187120/3849870

(下载后必需搭建three20环境成功后才能运行～ 因为three20为引用加载，所以程序路径都是我本机的请见谅！)