Gowhich

iOS中NSUserDefaults的简单使用

发表于 2025-06-17 分类于技术

创建一个user defaults方法有多个，最简单得快速创建方法:

1	NSUserDefaults *accountDefaults = [NSUserDefaults standardUserDefaults];

添加数据到 user defaults:

1	[accountDefaults setObject:nameField.text forKey:UserDefaultNameKey];

也可以添加基本数据类型int, float, bool等，有相应得方法

1	[accountDefaults setBool:YES forKey:UserDefaultBoolKey];

实例代码：

1
2
3

NSUserDefaults *accountDefaults = [NSUserDefaults standardUserDefaults];
[accountDefaults setObject:@"yes" forKey:@"login"];
[accountDefaults setBool:YES forKey:@"login_state"];

从user defaults中获取数据:

1 2	[accountDefaults objectForKey:NCUserDefaultNameKey] [accountDefaults boolForKey: UserDefaultBoolKey];

实例代码：

1
2
3

NSUserDefaults *accountDefaults = [NSUserDefaults standardUserDefaults];
NSLog(@"login = %@",[accountDefaults objectForKey:@"login"]);
NSLog(@"login_state = %d",[accountDefaults boolForKey: @"login_state"]);

要点： NSUserDefaults非常好用，并不需要用户在程序中设置NSUserDefaults的全局变量，需要在哪里使用NSUserDefaults的数据，那么就在哪里创建一个NSUserDefaults对象，然后进行读或者写操作。

针对同一个关键字对应的对象或者数据，可以对它进行重写，重写之后关键字就对应新的对象或者数据，旧的对象或者数据会被自动清理。

参考文章：http://blog.csdn.net/binyanye1/article/details/7633728

SenTestingKit not loaded, Image not found

发表于 2025-06-17 分类于技术

报错信息：

dyld: Library not loaded: @rpath/SenTestingKit.framework/Versions/A/SenTestingKit

文件我参考“http://www.carrotcoded.com/2012/10/10/sentestingkit-not-loaded-image-not-found/”

里面是这样的描述的

I am pretty sure that it was working perfectly in the old macbook pro, therefore i set out to google and see that alot of people actually hit this issue but there wasn’t any clear cut answer. To solve this basically, expand your solution -> Frameworks -> Remove the SenTestingKit from your project. This should resolve the issue. Note : Please remove reference not delete it.

大概的意思就是说，去掉这个SenTestingKit.framework框架就好了。

我去掉后确实可以了，也没有影响我的后面的运行

Note : Please remove reference not delete it.

注意这一句，别删掉了，这个可是框架自己本身就有的

iOS 毫秒级的计算毫秒时间

发表于 2025-06-17 分类于技术

毫秒级很简单

看代码示例

_imageNameDic = [NSMutableDictionary dictionaryWithCapacity:IMAGE_SUM];
for(int i=0;i<IMAGE_SUM;i++){
    NSDate *date = [NSDate date];
    NSTimeInterval aInterval =[date timeIntervalSince1970];
    
    NSString *timeString = [NSString stringWithFormat:@"%f", aInterval];

    NSString *uuid = [postData uuid];
    NSString *filename = [NSString stringWithFormat:@"%@_%@.png",uuid,timeString];
    NSMutableDictionary *tmpDic = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"",@"state",[NSString stringWithFormat:@"%@",filename],@"name", nil];
    [_imageNameDic setObject:tmpDic
                      forKey:[NSString stringWithFormat:@"%d",i]];
}

iOS 删除文件删除文件夹创建文件创建文件夹判断文件存在 md5 封装类

发表于 2025-06-17 分类于技术

自己最近在使用关于数据的存取和删除，于是自己就写了一个包括功能的类，自己用着还是蛮方便，再次分享一下

只贴代码：

StorageData.m

//
//  StorageData.m
//  xunYi7
//
//  Created by david on 13-6-28.
//  Copyright (c) 2013年 david. All rights reserved.
//

#import <CommonCrypto/CommonDigest.h>
#import "StorageData.h"
#import "xunYi7AppDelegate.h"

@implementation StorageData

-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    NSLog(@"开始结didReceiveData搜数据");
}

-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
    NSLog(@"开始结didReceiveResponse搜数据");
}

-(void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
    NSLog(@"didFailWithError");
}

-(void) connectionDidFinishLoading:(NSURLConnection *)connection{
    NSLog(@"connectionDidFinishLoading");
}

+(NSMutableData *)remoteFetchData:(NSString *)dataUrl{
    NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
    
    //创建目录
    currentDataFilePath = [self createDirectory:currentDataFilePath];
    
    currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",[self md5:dataUrl]]];
    
    if([xunYi7AppDelegate isReachable]){
        NSURL *url = [[NSURL alloc] initWithString:dataUrl];
        NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url
                                                      cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                  timeoutInterval:60];
        
        NSURLResponse *response = [[NSURLResponse alloc] init];
        NSError *receiveDataError = [[NSError alloc] init];
        
        NSMutableData *receivedData = (NSMutableData *)[NSURLConnection sendSynchronousRequest:request
                                                                             returningResponse:&response
                                                                                         error:&receiveDataError];
        [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
        
        return receivedData;
    }else{
        [xunYi7AppDelegate showNetworkMessage];
    }

    return nil;
}

+(NSMutableData *)localFetchData:(NSString *)dataUrl{
    
    NSString *currentDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchTodayDate]];
    NSString *yesterdayDataFilePath = [[self dataPath] stringByAppendingPathComponent:[self fetchYesterdayDate]];
    
    //创建目录
    currentDataFilePath = [self createDirectory:currentDataFilePath];
    
    currentDataFilePath = [currentDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",[self md5:dataUrl]]];
    yesterdayDataFilePath = [yesterdayDataFilePath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",[self md5:dataUrl]]];
    
    NSMutableData *localData = [self fromFilenamePathFetchLocalData:currentDataFilePath];
    
    if(localData != nil){//本地数据
        return localData;
        
    }else{//远程获取数据
        
        NSMutableData *receivedData = [self remoteFetchData:dataUrl];
        
        if(receivedData != nil){
            if([self storageDataToFile:receivedData fileName:currentDataFilePath]){
                NSLog(@"保存成功");
                [self removeDirectory];
            }else{
                NSLog(@"保存失败");
            }
        }else{
            if((localData = [self fromFilenamePathFetchLocalData:yesterdayDataFilePath]) != nil){
                return localData;
            }
        }
        return receivedData;
    }
    return nil;
}

//md5加密字符串
+(NSString *)md5:(NSString *)str{
    const char *cStr = [str UTF8String];
    unsigned char result[16];
    CC_MD5(cStr, strlen(cStr), result); // This is the md5 call
    return [NSString stringWithFormat:
            @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
            result[0], result[1], result[2], result[3],
            result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11],
            result[12], result[13], result[14], result[15]
            ]; 
}
//上传图片存储
+(void) saveUploadImage:(UIImage *)image withName:(NSString *)imageName{
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    NSError *error;
    
    // 获取沙盒目录
    NSString *fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    fullPath = [fullPath stringByAppendingPathComponent:@"tmpImage"];
    if(![fileManager fileExistsAtPath:fullPath]){
        [fileManager createDirectoryAtPath:fullPath
               withIntermediateDirectories:YES
                                attributes:nil
                                     error:&error];
    }
   
    fullPath = [fullPath stringByAppendingPathComponent:imageName];
    NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
    
    // 将图片写入文件
    [imageData writeToFile:fullPath atomically:NO];
}

//上传图片删除
+(void) removeUploadImage:(UIImage *)image withName:(NSString *)imageName{
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    NSError *error;
    
    // 获取沙盒目录
    NSString *fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    fullPath = [fullPath stringByAppendingPathComponent:@"tmpImage"];
    if(![fileManager fileExistsAtPath:fullPath]){
        [fileManager removeItemAtPath:fullPath error:&error];
    }
}

//获取存储的图片
+(NSString *)fetchUploadImagePath:(NSString *)imageName{
    NSString *fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    fullPath = [fullPath stringByAppendingPathComponent:@"tmpImage"];
    fullPath = [fullPath stringByAppendingPathComponent:imageName];
    return fullPath;
}

//判断文件是否存在
+(NSString *)isFileExists:(NSString *)fullpath{
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    if([fileManager fileExistsAtPath:fullpath]){
        return fullpath;
    }
    return nil;
}

//数据存储
//+(void)

//获取存储文件的目录
+(NSString *)dataPath{
    //此处首先指定了图片存取路径（默认写到应用程序沙盒 中）
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
    
    //并给文件起个文件名
    NSString *filePathDerectory = [paths objectAtIndex:0];
    
    return filePathDerectory;
}

//获取指定文件的数据
+(NSMutableData *)fromFilenamePathFetchLocalData:(NSString *)filename{
    //保存数据到指定文件中
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    if([fileManager fileExistsAtPath:filename]){
        NSData *data = [fileManager contentsAtPath:filename];
        return [data mutableCopy];
    }
    
    return nil;
}

//存储数据到指定文件
+(BOOL) storageDataToFile:(NSData *)data fileName:(NSString *)fileName{
    //保存数据到指定文件中
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    if([fileManager createFileAtPath:fileName contents:data attributes:nil]){
        return YES;
    }else{
        return NO;
    }
}

//删除文件
+(void) deleteFile:(NSString *)fileName{
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    NSError *error;
    [fileManager removeItemAtPath:fileName error:&error];
}

//获取今天的日期
+(NSString *) fetchTodayDate{
    NSDate *currentDate = [NSDate date];
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateStyle:NSDateFormatterMediumStyle];
    return [dateFormatter stringFromDate:currentDate];
}

//获取昨天的日期
+(NSString *) fetchYesterdayDate{
    NSDate *yesterdayDate = [NSDate dateWithTimeIntervalSinceNow:-(24 * 60 * 60)];
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateStyle:NSDateFormatterMediumStyle];
    return [dateFormatter stringFromDate:yesterdayDate];
}

//获取前天的日期
+(NSString *) fetchYesterdayBeforeDate{
    NSDate *yesterdayDate = [NSDate dateWithTimeIntervalSinceNow:-(2 * (24 * 60 * 60))];
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateStyle:NSDateFormatterMediumStyle];
    return [dateFormatter stringFromDate:yesterdayDate];
}

//获取存储文件的数据

//创建文件

//创建目录
+(NSString *) createDirectory:(NSString *)directoryName{
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    NSError *error;
    if(![fileManager fileExistsAtPath:directoryName]){
        [fileManager createDirectoryAtPath:directoryName
               withIntermediateDirectories:YES
                                attributes:nil
                                     error:&error];
        if(error == nil){
            return directoryName;
        }else{
            return directoryName;
        }
    }else{
        return directoryName;
    }
}
//删除文件
+(void) removeFile:(NSString *)filePath{
    NSError *error;
    
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    if([fileManager fileExistsAtPath:filePath]){
        [fileManager removeItemAtPath:filePath error:&error];
    }
    if(error){
        NSLog(@"error = %@",error);
    }
}

//删除目录
+(void) removeDirectory{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsPath = [paths objectAtIndex:0];
    NSString *removeDirectoryPath = [documentsPath stringByAppendingPathComponent:[self fetchYesterdayBeforeDate]];
    NSError *error;
    
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    if([fileManager fileExistsAtPath:removeDirectoryPath]){
        [fileManager removeItemAtPath:removeDirectoryPath error:&error];
    }
    if(error){
        NSLog(@"error = %@",error);
    }
}
@end

StorageData.h

//
//  StorageData.h
//  xunYi7
//
//  Created by david on 13-6-28.
//  Copyright (c) 2013年 david. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface StorageData : NSObject<NSURLConnectionDataDelegate, NSURLConnectionDelegate>

+(NSMutableData *)remoteFetchData:(NSString *)dataUrl;
+(NSMutableData *)localFetchData:(NSString *)dataUrl;
+(void) saveUploadImage:(UIImage *)image withName:(NSString *)imageName;
+(NSString *) uploadImage:(UIImage *)image withName:(NSString *)imageName;
+(NSString *) fetchUploadImagePath;
+(NSString *) fetchUploadImagePath:(NSString *)imageName;
+(void) removeUploadImage:(UIImage *)image withName:(NSString *)imageName;
+(NSString *)isFileExists:(NSString *)fullpath;
+(void) removeFile:(NSString *)filePath;
@end

有不完善的地方，希望指正和修改

UISegmentControl设置背景色的问题

发表于 2025-06-17 分类于技术

关于UISegmentControl设置背景色的问题，我也遇到了，还查找了不少的资料，最终答案我在文档里面找到了。

链接我记录一下：https://developer.apple.com/library/ios/#documentation/UIKit/Reference/UISegmentedControl_Class/Reference/UISegmentedControl.html

搜索一下tintcolor就可以知道了，说的很清楚的

tintColor The tint color of the segmented control. @property(nonatomic, retain) UIColor *tintColor Discussion The default value of this property is nil (no color). UISegmentedControl uses this property only if the style of the segmented control is UISegmentedControlStyleBar.

说的就是，首先有个属性要改一下

1	sexSegment.segmentedControlStyle = UISegmentedControlStyleBar;

下面代码是我的：

NSArray *item = [[NSArray alloc] initWithObjects:@"男",@"女", nil];

UISegmentedControl *sexSegment = [[UISegmentedControl alloc] initWithItems:item];
sexSegment.layer.borderWidth = 0.0;
sexSegment.tintColor = [ColorConfig NavigationColor];    
sexSegment.segmentedControlStyle = UISegmentedControlStyleBar;
[sexSegment setFrame:CGRectMake(segmentX, segmentY, segmentWidth, segmentHeight)];
[sexSegment addTarget:self
               action:@selector(selectSex:)
     forControlEvents:UIControlEventValueChanged];

[_contentView addSubview:sexSegment];

分段控件UISegmentedControl

发表于 2025-06-17 分类于技术

最近刚刚接触到这个东西，感觉好神奇一样，就试着用了一下，哈哈，果然还不错：

代码如下，很简单的例子，不寒有任何的杂质

NSArray *item = [[NSArray alloc] initWithObjects:@"男",@"女", nil];

UISegmentedControl *sexSegment = [[UISegmentedControl alloc] initWithItems:item];
sexSegment.segmentedControlStyle = UISegmentedControlStyleBar;
[sexSegment setSegmentedControlStyle:UISegmentedControlStylePlain];
[sexSegment setFrame:CGRectMake(segmentX, segmentY, segmentWidth, segmentHeight)];
[sexSegment addTarget:self
               action:@selector(selectSex:)
     forControlEvents:UIControlEventValueChanged];

[_contentView addSubview:sexSegment];

Yii 验证码的使用和验证过程

发表于 2025-06-17 分类于技术

如果要实现这个过程的话，需要几个步骤

第一步就是controller的操作

在要操作的控制器中添加如下代码：

<?php
function actions()
{
    return [
        // captcha action renders the CAPTCHA image displayed on the contact page
        'captcha' => [
            'class' => 'CCaptchaAction',
            'backColor' => 0xFFFFFF,
            'maxLength' => '8', // 最多生成几个字符
            'minLength' => '7', // 最少生成几个字符
            'height' => '40',
            'width' => '230',
        ],
    ];

}

function accessRules()
{
    return [
        ['allow',
            'actions' => ['captcha'],
            'users' => ['*'],
        ],
    ];
}

第二步就是view的操作

在要显示验证码的地方添加如下代码：

<div class="control-group">
    <?php $this->widget('CCaptcha',array(
        'showRefreshButton'=>true,
        'clickableImage'=>false,
        'buttonLabel'=>'刷新验证码',
        'imageOptions'=>array(
            'alt'=>'点击换图',
            'title'=>'点击换图',
            'style'=>'cursor:pointer',
            'padding'=>'10')
        )); ?>
</div>

第三步就是LoginForm的操作

<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
    public $username;
    public $password;
    public $rememberMe;
    public $verifyCode;
    private $_identity;

    /**
     * Declares the validation rules.
     * The rules state that username and password are required,
     * and password needs to be authenticated.
     */
    public function rules()
    {
        return [
            // username and password are required
            //            array('username, password', 'required'),
            ['username', 'required', 'message' => '登录帐号不能为空'],
            ['password', 'required', 'message' => '密码不能为空'],
            ['verifyCode', 'required', 'message' => '验证码不能为空'],
            ['verifyCode', 'captcha', 'on' => 'login', 'allowEmpty' => !Yii::app()->admin->isGuest],
            // rememberMe needs to be a boolean
            ['rememberMe', 'boolean'],
            // password needs to be authenticated
            ['password', 'authenticate'],
        ];
    }

    /**
     * Declares attribute labels.
     */
    public function attributeLabels()
    {
        return [
            'rememberMe' => '下次记住我',
            'verifyCode' => '验证码',
        ];
    }

    /**
     * Authenticates the password.
     * This is the 'authenticate' validator as declared in rules().
     */
    public function authenticate($attribute, $params)
    {
        if (!$this->hasErrors()) {
            $this->_identity = new UserIdentity($this->username, $this->password);
            if (!$this->_identity->authenticate()) {
                $this->addError('password', '帐号或密码错误.');
            }
        }
    }

    public function validateVerifyCode($verifyCode)
    {
        if (strtolower($this->verifyCode) === strtolower($verifyCode)) {
            return true;
        } else {
            $this->addError('verifyCode', '验证码错误.');
        }
    }

    /**
     * Logs in the user using the given username and password in the model.
     * @return boolean whether login is successful
     */
    public function login()
    {
        if (null === $this->_identity) {
            $this->_identity = new UserIdentity($this->username, $this->password);
            $this->_identity->authenticate();
        }
        if (UserIdentity::ERROR_NONE === $this->_identity->errorCode) {
            $duration = $this->rememberMe ? 3600 * 24 * 30 : 0; // 30 days
            Yii::app()->user->login($this->_identity, $duration);
            return true;
        } else {
            return false;
        }
    }
}

第四步，实现验证的过程，那么具体的查看我自己的写的一个方式，在第三部已经写好了

validateVerifyCode就是啦，可以在controller里面调用

我的调用如下：

<?php
function actionLogin()
{
    $model = new LoginForm;
    if (isset($_POST['ajax']) && 'login-form' === $_POST['ajax']) {
        echo CActiveForm::validate($model);
        Yii::app()->end();
    }

    if (isset($_POST['LoginForm'])) {
        $model->attributes = $_POST['LoginForm'];
        // validate user input and redirect to the previous page if valid
        if ($model->validate() &&
            $model->validateVerifyCode($this->createAction('captcha')->getVerifyCode()) &&
            $model->login()) {
            $this->redirect(CController::createUrl('default/index'));
        }
    }
    $this->render('login', ['model' => $model]);
}

Xcode 4 设置App版本号

发表于 2025-06-17 分类于技术

刚接触ios开发的童鞋应该会对于app版本号吗有些疑问，因为target不仅仅在summary中有版本号，同样在Info.plist等地方也有版本号码的地方，一头乱码，不知吗？其实xcode在summary中已经将app最基本的设置进行了全面的封装，其余的plist，build setting等地方会跟着summary设置的改变而改变。

一个version，一个build，都是设置版本的地方，有什么区别呢？

在ios中(Android等工程中也一样),有两种version，一种是 CFBundleVersion (“Bundle Version”)，也就是我们看到的version,另一种是CFBundleShortVersionString (“Bundle version string, short”)，也就是我们看到的Build。

普通情况下，我们只使用version即可，设置为”1.0”, “1.1”, “2.0” , etc，但如果你要使用两个版本号时候，需要将build设置为1,2,3…等递增的整数，有什么用呢？

version我们可以通过AppStore、itunes或其它软件看到，是给用户看的，而build是我们在团队开发中内部只用的，只有我们自己可以看到。比如团队打算发布1.0版本的时候，会发布很多build版本供测试或QA团队进行测试，你发布了很多build，因为一直在修改着代码，因此当你收到一条bug信息时候，你怎么知道是那个build引起的问题呢，这时候build版本号的有点就可以体现出来了，不是吗。

我这里有一段代码，可以在xcode编译时候自动增加build号码。

先把 Info.plist 里的版本号改成某个数字，然后 Targets → your target → Build Phases → Run Script 的地方加上：

version=`/usr/libexec/PlistBuddy -c "Print CFBundleVersion" $PRODUCT_SETTINGS_PATH`
version=`expr $version + 1`
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $version" $PRODUCT_SETTINGS_PATH
#/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString $version" $PRODUCT_SETTINGS_PATH 这行代码会让version也自增，一般不需要

参考：http://blog.csdn.net/shencaifeixia1/article/details/8221273#

更新证书错误Code Sign error: Provisioning profile 'XXXX' can't be found

发表于 2025-06-17 分类于技术

在Xcode中当你在更新了你得证书而再重新编译你的程序，真机调试一直会出现 Code Sign error: Provisioning profile ‘XXXX’ can’t be found是不是会另你很恼火。下面说说解决方法，让你很好的解决这个问题。

1.关闭你的项目，找到项目文件XXXX.xcodeproj，在文件上点击右键，选择“显示包内容”（Show Package Contents）。会新打开一个Finder。注：其实XXXX.xcodeproj就是一个文件夹，这里新打开的一个Finder里面的三个文件就是该XXXX.xcodeproj文件夹里面的文件。

2.在新打开的Finder中找到project.pbxproj，并且打开。在这之中找到你之前的证书的编码信息。我之前报的错误信息是

Code Sign error: Provisioning profile ‘37D44E7F-0339-4277-9A82-C146A944CD46’，所以我用查找的方式找到了所有包括37D44E7F-0339-4277-9A82-C146A944CD46的行，并且删除。

3.保存，重新启动你的项目，再编译。就OK了。

参考：http://www.douban.com/note/131009422/

Yii路径知识点摘要

发表于 2025-06-17 分类于技术

如果是 // 就会默认去调用protected/views/layouts，//代表绝对路径
其实就是绝对和相对的关系/代表相对路径,如module/user下的layout
用单斜杠的话默认会先找当前已经激活的模块底下的view,若当前未有激活的模块则从系统根目录下开始找,双斜杠的话就直接从系统根下开始找

Yii framework已经定义的命名空间常量

system: 指向Yii框架目录; YII\framework
zii: 指向zii library 目录; YII\framework\zii
*application : 指向应用程序基本目录; protected*
*webroot: 指向包含里入口脚本文件的目录. 此别名自 1.0.3 版起生效. *
ext : 指向包含所有第三方扩展的目录, 从版本 1.0.8 可用; \protected\extensions

Yii::getPathOfAlias('zii'); 
Yii::import ('zii.*');
Yii::setPathOfAlias('backend', $backend); 
'import' => [
    'backend.models.*', 
]

应用的主目录是指包含所有安全系数比较高的PHP代码和数据的根目录。在默认情况下，这个目录一般是入口代码所在目录的一个目录： protected 。这个路径可以通过在application configuration里设置 basePath来改变.
YII framework路径

1	Yii::getFrameworkPath()

protected/runtime

1	Yii::app()->getRuntimePath();

protected/venders目录

1	Yii::import('application.venders.*');

或在protected/config/main.php说明

'import '=> [   
    // ......    
    'application.venders.*',    
],

插入meta信息

Yii::app()->clientScript->registerMetaTag('关键字','keywords');  
Yii::app()->clientScript->registerMetaTag('一些描述','description');  
Yii::app()->clientScript->registerMetaTag('作者','author');  
Yii::app()->clientScript->registerMetaTag(' text/html;charset=utf-8', null, 'Content-Type');  
//<link rel="alternate" type="application/rss+xml" href="http://www.dreamdu.com/feed/" />
Yii::app()->clientScript->registerLinkTag('alternate','application/rss+xml',$this->createUrl('/feed'));

如何在控制器添加CSS文件或JavaScript文件

Yii::app()->clientScript->registerCssFile(Yii::app()->baseUrl.'/css/my.css');  
Yii::app()->clientScript->registerScriptFile(Yii::app()->baseUrl.'/css/my.js');  
<?php echo $this->module->assetsUrl; ?>/css/main.css  
//调用YII框架中framework/web/js/source的js,其中registerCoreScript key调用的文件在framework/web/js/packages.php列表中可以查看
Yii::app()->clientScript->registerCoreScript('jquery');

在view中得到当前controller的ID方法：

1	Yii::app()->getController()->id;

在view中得到当前action的ID方法：

1	Yii::app()->getController()->getAction()->id;

yii获取ip地址

1	Yii::app()->request->userHostAddress;

yii判断提交方式

1	Yii::app()->request->isPostRequest

得到当前域名:

1	Yii::app()->request->hostInfo

得到proteced目录的物理路径

1	YII::app()->basePath;

获得上一页的url以返回

1	Yii::app()->request->urlReferrer;

得到当前url

1	Yii::app()->request->url;

得到当前home url

1	Yii::app()->homeUrl

得到当前return url

1	Yii::app()->user->returnUrl

项目路径

dirname(Yii::app()->BasePath)  
Yii::app()->getBaseUrl(true);  
<?php echo $this->getLayoutFile('main'); ?>
$this->redirect('index.php?r=admin/manage');

createUrl()

echo $this->createUrl('urlBoyLeeTest');  
//out => /yii_lab/index.php?r=lab/urlBoyLeeTest  
$this->createUrl('post/read') // /index.php/post/read  
<?php echo Yii::app()->request->baseUrl; ?>/css/screen.css  
Yii::app()->theme->baseUrl.'/images/FileName.gif'

createAbsoluteUrl()

1 2	echo $this->createAbsoluteUrl('urlBoyLeeTest'); //out => http://localhost/yii_lab/index.php?r=lab/urlBoyLeeTest