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好久没发表文章了,来篇iOS开发知识整理!

2011-12-01 23:52 435 查看
2.简要介绍下内存管理机制?

Cocoa中提供了一个机制来实现上面提到的这个逻辑模型,它被称为“引用计数”(referring counting)或“保留计数”(retain counting):

3.objc中的减号和加号的意思以及用法?

①减号表示一个函数、或者方法或者消息的开始(在一个类的实例上被调用和实施)(可以认为是私有方法)

②加号表示其他的函数可以直接调用这个类中的方法,而不用创建这个类的实例(俗称静态方法)

4、项目整理

按钮:

BtnWinWin = [UIButton buttonWithType: UIControlStateNormal];

BtnWinWin.frame = CGRectMake(768, 679, 256, 42);

[BtnWinWin setBackgroundImage:[UIImage imageNamed:@"btnwinwin.jpg"] forState:UIControlStateNormal];

[BtnWinWin addTarget:self action:@selector(WinWin) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:BtnWinWin];

播放器:

NSString *soundPath = [[NSBundle mainBundle]pathForResource:musicTop ofType:@"mp3"];

NSURL *soundURL = [[NSURL alloc]initFileURLWithPath:soundPath];

player = [[AVAudioPlayer alloc]initWithContentsOfURL:soundURL error:nil];

[player setDelegate:self];

[player play];

两个控制器之间的动画转换:

mainFrame = [[Test_Book1_2_Classes_ViewControlleralloc] init];

haveMainFram =TRUE;

CATransition *transition = [CATransitionanimation];

transition.duration = 1.0f; /* 间隔时间*/

transition.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseInEaseOut]; /* 动画的开始与结束的快慢*/

transition.type = @"pageCurl";

transition.subtype = kCATransitionFromTop; /* 动画方向*/

transition.delegate = self;

[self.navigationController.view.layeraddAnimation:transition forKey:nil];

[self.navigationControllerpushViewController:mainFrameanimated:YES];

sdk相关:

1、两个.a静态库的合并,静态库有分适合模拟器的和真机的,如何合并请看:我的另一篇文章http://www.cnblogs.com/visen-0/archive/2011/08/02/2125067.html

2、创建root权限应用:http://www.cnblogs.com/visen-0/archive/2011/08/22/2149014.html

3、获取已经安装的列表:http://www.cnblogs.com/visen-0/archive/2011/08/22/2148847.html

4、自制.ipa文件下载安装。

5、判断是否越狱,去[NSFileManager defaultManager]找是否有对应的比如Cydia.app程序。

给服务器提交信息:

// 设备信息

UIDevice *device = [UIDevice currentDevice];

NSString *identifier = [[NSStringstringWithString:[device uniqueIdentifier]] lowercaseString];

NSLog(@"%@",identifier);

NSString *requestString = [NSStringstringWithFormat:@"http://www.yrwang.net/post.aspx?client=ios&deviceId=%@&reportMessage=%@",identifier,opinion.text];

NSString *requestStringUTF8 = [requestString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSURL * myURL = [[NSURL alloc] initWithString:requestStringUTF8];

NSMutableURLRequest *myRequest = [NSMutableURLRequestrequestWithURL: myURL

cachePolicy: NSURLRequestReloadIgnoringLocalAndRemoteCacheData

timeoutInterval: 30];

[myURL release];

connection_ = [[NSURLConnectionalloc] initWithRequest: myRequest delegate: self];

解析xml:

NSXMLParser* xmlRead = [[NSXMLParser alloc] initWithData:data];//初始化NSXMLParser对象

[data release];

[xmlRead setDelegate:self];

[xmlRead parse];

监听者模式:

[[NSNotificationCenterdefaultCenter] addObserver:self

selector:@selector(getUpdatedPoints:)

name:111

object:nil];

[[NSNotificationCenterdefaultCenter] postNotificationName:111 object:nil];

单例模式:

static AdPublisherConnect *sharedInstance_ = nil;

+ (AdPublisherConnect*)sharedAdPublisherConnect

{

if(!sharedInstance_)

{

sharedInstance_ = [[superalloc] init];

}

returnsharedInstance_;

}

文件的读取写,创建:
这个是创建的例子:

//创建文件管理器

NSFileManager *fileManager = [NSFileManagerdefaultManager];

//获取路径

//参数NSDocumentDirectory要获取那种路径

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];//去处需要的路径

//更改到待操作的目录下

[fileManager changeCurrentDirectoryPath:[documentsDirectory stringByExpandingTildeInPath]];

//创建文件fileName文件名称,contents文件的内容,如果开始没有内容可以设置为nil,attributes文件的属性,初始为nil

//获取文件路径

NSString *path = [documentsDirectory stringByAppendingPathComponent:fileName];

//创建数据缓冲

NSMutableData *writer = [[NSMutableDataalloc] init];

//将字符串添加到缓冲中

[writer appendData:[contents dataUsingEncoding:NSUTF8StringEncoding]];

//将其他数据添加到缓冲中

//将缓冲的数据写入到文件中

[writer writeToFile:path atomically:YES];

[writer release];

字符串的获取某个操作:NSRange

e = [tempString rangeOfString:@","];

key = [tempString substringToIndex:e.location];

e = [tempString rangeOfString:@"\r\n"];

tempString = [tempString substringFromIndex:e.location+1];

录音:

AVAudioSession

分页:
uitable分页

查找文件目录;

+ (NSMutableArray *)findFile{

NSFileManager *fileManager = [[NSFileManager defaultManager] init];

NSMutableArray *everyTitle = [[NSMutableArray alloc] init];

NSArray *filePaths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);

NSString *filePath = [filePaths objectAtIndex:0];

NSLog(@"%@",filePath);

NSDirectoryEnumerator *direnum = [fileManager enumeratorAtPath:filePath];

NSString *fileName;

while ((fileName = [direnum nextObject])) {

[everyTitle addObject:fileName];

}

return everyTitle;

}

表单:

UIActionSheet

长按按钮:

UILongPressGestureRecognizer

滚动视图:

UIScrollView

web网页:

UIWebView

隐藏导航栏,应用全屏。
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