iphone杂集

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一，修改状态栏：

1.加入[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];但此方法只是不显示状态条，状态条所占用的空间仍然存在。

2.可以修改Info.plist文件，在info.plist文件中加入一条新键值，命名为:UIStatusBarHidden;选择Valuetype为Boolean，而后重新编译运行。

3，修改屏幕显示方向：

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:NO];

4，得到项目的名字

//得到项目的名字，并设置在当前视图标题上

self.title = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleName"];

5，设置当前视图支持触摸

setUserInteractionEnabled:YES；

6.Button.userInteractionEnabled=NO,按钮停止接受任何事件

7.Button.Enabled=NO,按钮不显示

8.获得当前鼠标的位置

[NSEvent mouseLocation];

9.刷新UITableViewrController视图

[self.TableView reloadData];

10.

字符串转化为int

NSString的IntegerValue方法

11.整形转化为字符串为StringWithFormat；

13.使用随机数

srandom()得使用

random((unsigned)(macn_absolute_time() &0xFFFFFFFF));

14。Quartz中是怎样设置旋转点得

UIImageView *imageview=[[UIImageview alloc] initWithImage:[UIImage imageNamed:@"bg.png"]];

imageView.layer.anchorPoint=CGPointMake(0.5,1.0);

15.隐藏NavigationBar

[self.navigationController setNavigationBarHidden:YES animated:YES];

16,根据CLLocation得到coordinate(坐标）而后打开google地图：

NSString *mapUrl=[NSString stringWithFormat:@"http://maps.google.com/maps?q=%f,%f",loc.latitude,loc.longitude];

NSURL *url=[NSURL URLWithString:mapUrl];

[[UIApplication sharedApplication] openURL:url];

17.日期格式化：

NSDataFormat *format=[NSDateFormat alloc] init];

[format setDateFormat:@"hh:mm:ss"];

NSDate *noew=[NSDate date];

NSString *str=[format stringFromDate:now];

18。webView使用：

webView loadRequest:[NSURLRequest alloc] initwithURL:[NSURL alloc]initWithStringt:@"http://www.google.com"];

18。通过通知调用方法：

UIApplication *app = [UIApplication sharedApplication];

[[NSNotificationCenter defaultCenter] addObserve:self

selector:@selector(xxx:)

name:UIApplicationWillTerminateNofification

object:app];

19。遍历所有视图的方法：

其中cell是UITableViewCell，

for(UIView *oneView in cell.contentView.subviews)

{

if ([oneView isMemberOfClass:[UITextField class]])

{

textField = (UITextField *)oneView;

}

20.

1、背景音乐播放支持mp3格式循环播放长音乐

这种播放音乐的方式导入框架#import <AVFoundation/AVFoundation.h>；

NSString *musicFilePath = [[NSBundle mainBundle] pathForResource:@"changan" ofType:@"mp3"]; //创建音乐文件路径

NSURL *musicURL = [[NSURL alloc] initFileURLWithPath:musicFilePath];

AVAudioPlayer *thePlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:musicURL error:nil];

//创建播放器

self.myBackMusic = thePlayer; //赋值给自己定义的类变量

[musicURL release];

[thePlayer release];

[myBackMusic prepareToPlay];

[myBackMusic setVolume:1]; //设置音量大小

myBackMusic.numberOfLoops = -1;//设置音乐播放次数 -1为一直循环

if (mainMusicStatus)

{

[myBackMusic play]; //播放

}

2、按钮播放声音播放短声音

需要导入框架#import <AudioToolbox/AudioToolbox.h>

NSString *thesoundFilePath = [[NSBundle mainBundle] pathForResource:@"Clapping Crowd Studio 01" ofType:@"caf"]; //创建音乐文件路径

CFURLRef thesoundURL = (CFURLRef) [NSURL fileURLWithPath:thesoundFilePath];

AudioServicesCreateSystemSoundID(thesoundURL, &sameViewSoundID);

//变量SoundID与URL对应

AudioServicesPlaySystemSound(sameViewSoundID); //播放SoundID声音

21.设置UILabel换行

UILabel*label;
//设置换行
label.lineBreakMode = UILineBreakModeWordWrap;
label.numberOfLines = 0;
换行符还是\n
比如NSString * xstring=@"lineone\nlinetwo"

posted @ 2010-11-16 10:45 SsQq 阅读(100) 评论(0) 编辑

iphone 使用Core Graphics 剪贴图片

(void)cutOutImage:(UIImage *)cutedImage{

//设置要保存图片的大小

CGSize subImageSize=cutLocation.textureRect.size;

//初始化一个矩形，这个矩形是设置剪贴以后图片得大小

CGRect subImageRect=CGRectMake(KcutStartX, KcutStartY, KcutWidth, KcutHeight);

CGImageRef imageRef=cutedImage.CGImage;

CGImageRef subImageRef=CGImageCreateWithImageInRect(imageRef, subImageRect);

UIGraphicsBeginImageContext(subImageSize);

CGContextRef context=UIGraphicsGetCurrentContext();

CGContextDrawImage(context, subImageRect, subImageRef);

//得到新得图片

UIImage *subImage=[UIImage imageWithCGImage:subImageRef];

UIGraphicsEndImageContext();

}

posted @ 2010-11-16 10:45 SsQq 阅读(41) 评论(0) 编辑

iphone 文件保存

posted @ 2010-11-16 10:44 SsQq 阅读(413) 评论(0) 编辑

iphone 自定义UISwitch

// FirstViewController.m

// Swayable_test_zk

// Created by zhangkun on 9/3/10.

#import "FirstViewController.h"

#import "Swayable_test_zkAppDelegate.h"

//#import "CreateSwayableViewController.h"

//#import "MySwayablesViewController.h"

//#import "ViewCommentSwayableViewController.h"

//#import "MyaccountViewController.h"

@implementation FirstViewController

// The designated initializer. Override to perform setup that is required before the view is loaded.

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {

if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {

// Custom initialization

}

return self;

}

// Implement loadView to create a view hierarchy programmatically, without using a nib.

- (void)loadView {

}

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad {

[super viewDidLoad];

}

- (void)waitingAction:(id)sender

{

alert_zk = [[UIAlertView alloc] initWithTitle:@"" message:@"Loading..." delegate:selfcancelButtonTitle:nil otherButtonTitles:nil];

[NSTimer scheduledTimerWithTimeInterval:3.0f target:self selector:@selector(performController:)userInfo:nil repeats:NO];

[alert_zk show];

UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

indicator.center = CGPointMake(alert_zk.bounds.size.width / 2, alert_zk.bounds.size.height - 50);

[indicator startAnimating];

[alert_zk addSubview:indicator];

[indicator release];

btn = (UIButton *)sender;

}

-(void) goStartedPage:(id)sender{

Swayable_test_zkAppDelegate *delegate=(Swayable_test_zkAppDelegate*)[[UIApplicationsharedApplication] delegate];

//[self.view removeFromSuperview];

[[self parentViewController] dismissModalViewControllerAnimated:YES];

[delegate.window addSubview:delegate.nav.view];

}

- (void) performController:(NSTimer *)timer

{

[alert_zk dismissWithClickedButtonIndex:0 animated:NO];

[self.tabBarController setSelectedIndex:btn.tag];

}

// Override to allow orientations other than the default portrait orientation.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

- (void)didReceiveMemoryWarning {

// Releases the view if it doesn't have a superview.

[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

- (void)viewDidUnload {

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (void)dealloc {

[super dealloc];

}

@end

posted @ 2010-11-16 10:43 SsQq 阅读(203) 评论(0) 编辑

iphone NSOperation多线程使用

#import <Foundation/Foundation.h>

@interface RequestOperation : NSOperation{

NSURLRequest *_request;

NSMutableData*_data;

NSString *message;

}

@property(nonatomic,retain)NSString *message;

-(id)initWithRequest:(NSURLRequest*)request;

@end

// RequestOperation.m

// NSOperation

// Created by wangqiulei on 8/23/10.

#import "RequestOperation.h"

@implementation RequestOperation

@synthesize message;

-(id)initWithRequest:(NSURLRequest *)request{

if (self=[self init]) {

_request=[request retain];

_data=[[NSMutableData data]retain];

}

return self;

}

-(void)dealloc{

[_request release];

[_data release];

[super dealloc];

}

//如果返回为YES表示asychronously方式处理

-(BOOL)isConcurrent{

return YES;

}

//开始处理

-(void)start{

if (![self isCancelled]) {

NSLog(@"%@",self.message);

NSLog(@"-------------%d",[self retainCount]);

[NSURLConnection connectionWithRequest:_request delegate:self];

}

//取得数据

-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{

//添加数据

[_data appendData:data];

NSLog(@"%@",_data);

}

//http请求结束

-(void)connectionDidFinishLoading:(NSURLConnection *)connection{

}

@end

#import "RootViewController.h"

@implementation RootViewController

#pragma mark -

#pragma mark View lifecycle

- (void)viewDidLoad {

[super viewDidLoad];

// Uncomment the following line to display an Edit button in the navigation bar for this view controller.

// self.navigationItem.rightBarButtonItem = self.editButtonItem;

}

- (void)viewWillAppear:(BOOL)animated {

[super viewWillAppear:animated];

}

- (void)viewDidAppear:(BOOL)animated {

[super viewDidAppear:animated];

}

- (void)viewWillDisappear:(BOOL)animated {

[super viewWillDisappear:animated];

}

- (void)viewDidDisappear:(BOOL)animated {

[super viewDidDisappear:animated];

}

// Override to allow orientations other than the default portrait orientation.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

// Return YES for supported orientations.

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

-(void)buttonClicked:(id)sender{

_queue=[[NSOperationQueue alloc] init];

//第一个请求

NSURLRequest *request=[NSURLRequest requestWithURL:[NSURL URLWithString:@"http:www.google.com"]];

RequestOperation *operation=[[RequestOperation alloc] initWithRequest:request];

[_queue addOperation:operation];

[operation release];

//第二个请求

//NSURLRequest *request2=[NSURLRequest requestWithURL:[NSURL URLWithString:@"http:www.baidu.com"]];

//RequestOperation *operation1=[[RequestOperation alloc]initWithRequest:request2];

//operation1.message=@"operation1---";

//[_queue addOperation:operation1];

}

posted @ 2010-11-16 10:43 SsQq 阅读(151) 评论(0) 编辑

Iphone json解析xml

这个是一段xml文件，下面要做的是解析这个xml文件。

<pigletlist>
<piglet id="1">
    <name>Nifnif</name>
</piglet>
<piglet id="2">
    <name>Nufnuf</name>
</piglet>
<piglet id="3">
    <name>Nafnaf</name>
</piglet>
</pigletlist>

这个是程序运行结果：

{

id = 1;

name = Nifnif;

{

id = 2;

name = Nufnuf;

{

id = 3;

name = Nafnaf;

}

)

// 初始化一个数组，将解析的数据放在数组里
NSMutableArray *res = [[NSMutableArray alloc] init];

// 加载当前文件，此时文件名字为piglets.xml
NSString *XMLPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"piglets.xml"];
NSData *XMLData = [NSData dataWithContentsOfFile:XMLPath];

//通过NSData方式创建CXMLDocument也可以通过字符串的方式，在这里就不说了
CXMLDocument *doc = [[[CXMLDocument alloc] initWithData:XMLData options:0 error:nil] autorelease];

//创建一个数组，以存放我们从xml中得到的节点

NSArray *nodes = NULL;
//寻找节点为piglet的所有节点

nodes = [doc nodesForXPath:@"//piglet" error:nil];

for (CXMLElement *node in nodes) {
NSMutableDictionary *item = [[NSMutableDictionary alloc] init];
int counter;
for(counter = 0; counter < [node childCount]; counter++) {
// 从节点中取出值，按照键值对存储在NSMutableDictionary
[item setObject:[[node childAtIndex:counter] stringValue] forKey:[[node childAtIndex:counter] name]];
}

// 取得节点属性值，并存储在NSMutableDictionary
[item setObject:[[node attributeForName:@"id"] stringValue] forKey:@"id"]; // <------ this magical arrow is pointing to the area of interest

[res addObject:item];
[item release];
}

// and we print our results
NSLog(@"%@", res);
[res release];

NSString * value = [[[node childAtIndex:counter] stringValue] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
if ([value length] != 0){
[item setObject:[[node childAtIndex:counter] stringValue] forKey:[[node childAtIndex:counter] localName]];

}

posted @ 2010-11-16 10:42 SsQq 阅读(508) 评论(0) 编辑

posted @ 2010-11-16 10:41 SsQq 阅读(86) 评论(0) 编辑

iphone 使用获取cookie

int i;

NSDictionary *dic = [NSDictionary dictionaryWithObject:@"name=value; path=/; domain=.test.com;, name2=value2; path=/;" forKey:@"Set-Cookie"];

NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:dic forURL:[NSURL URLWithString:@"http://www.foo.com/"]];

for (i = 0; i < [cookies count]; i++)

{

NSHTTPCookie *cookie = [cookies objectAtIndex:i];

NSLog(@"%@ for %@",[cookie name], [cookie domain]);

}