ios 项目总结二

项目基本上完成：总结下：

　　代码写的比较乱，许多东西的代码全部写在了一个类了，导致一个类的代码行数超过千行，，发现写的时候容易，到后面再看的，维护的话出很麻烦， 所以以后最近写成工具类，多思考，这样代码才会整洁，有效，效率高，还有就是写代码前，要多思考，比没有目的的写代码强百倍，多思考，才会进步的更快，下面就是项目中常用的demo。

1 [application setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];//去掉导航

2 运用了UIviewcontrol添加子的 UIviewcontrol的类的方法实现：实现方法就是定义个父的UIViewController，然后添加子的UIViewController，添加的方式就是：

- (void)viewDidLoad
{
[super viewDidLoad];

UIView *contentView = [[UIView alloc]initWithFrame:CGRectMake(0, 60, 1024, 768-60)];
[contentView setBackgroundColor:[UIColor whiteColor]];
[self.view addSubview:contentView];

chanPinVC=[[ChanPinTuiJian_ViewController alloc]init];
[self addChildViewController:chanPinVC];

liuXingVC =[[LiuXing_ViewController alloc]init];
[self addChildViewController:liuXingVC];

guanZhuVC=[[GuanZhu_ViewController alloc]init];
[self addChildViewController:guanZhuVC];

vipVC=[[Vip_ViewController alloc]init];
[self addChildViewController:vipVC];

[contentView addSubview:chanPinVC.view];
currentViewController=chanPinVC;

}

页面的跳转是在父的viewController里面进行的，

//页面跳转button点击事件
-(void)click:(UIButton *)sender{
//移除掉添加在产品页面的单品View；
if (sender.tag==3) {
[[NSNotificationCenter defaultCenter]postNotificationName:@"dataOne" object:nil];

}
if ((currentViewController == chanPinVC && sender.tag == 1)||(currentViewController == liuXingVC && sender.tag == 2)||(currentViewController == guanZhuVC && sender.tag == 3)||(currentViewController == vipVC && sender.tag == 4)) {
return;//此方法判断是防止重复点击
}

UIViewController *oldViewController=currentViewController;
switch (sender.tag) {
case 1:{
//产品推荐 页面跳转的方法用的是transitionWithView
[UIView transitionWithView:self.view duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{
imagejiao.frame=CGRectMake(152, 58-8, 19, 8);
}completion:NULL];

[self transitionFromViewController:currentViewController toViewController:chanPinVC duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{
}  completion:^(BOOL finished) {
if (finished) {
currentViewController=chanPinVC;
}else{
currentViewController=oldViewController;
}
}];

}

break;
case 2:{
//流行趋势
[UIView transitionWithView:self.view duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{
imagejiao.frame=CGRectMake(204+32, 58-8, 19, 8);
}completion:NULL];

[self transitionFromViewController:currentViewController toViewController:liuXingVC duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{
}  completion:^(BOOL finished) {
if (finished) {
currentViewController=liuXingVC;
}else{
currentViewController=oldViewController;
}
}];
}

break;
case 3:{
//产品关注
[UIView transitionWithView:self.view duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{
imagejiao.frame=CGRectMake(290+32, 58-8, 19, 8);
}completion:NULL];
[self transitionFromViewController:currentViewController toViewController:guanZhuVC duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{} completion:^(BOOL finished){
if (finished) {
currentViewController=guanZhuVC;
}else{
currentViewController=oldViewController;
}
}];

}

break;
case 4:{
//vip服务
[UIView transitionWithView:self.view duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{
imagejiao.frame=CGRectMake(376+32, 58-8, 19, 8);
}completion:NULL];
[self transitionFromViewController:currentViewController toViewController:vipVC duration:0.2 options:UIViewAnimationOptionLayoutSubviews animations:^{} completion:^(BOOL finished){
if (finished) {
currentViewController=vipVC;
}else{
currentViewController=oldViewController;
}
}];

} break;
default:
break;
}

}

3 一个页面的多个tableview的实现：tableview的判断方法是根据tableview==的方法，判断，还有就是重绘tableview的时候，里面的数据源显示的时候有时会出现混乱，所以解决的方法就是把tableview的数据在cell方法中，写在if（cell==nil）{}的外面，还有就是一个 NSString *identity=[NSString stringWithFormat:@"%d%d",indexPath.section,indexPath.row];这样写，
4 扫描二维码的实现：添加 libiconv.dylib库，还有就是ZBarSDK库，调用的方法：

//二维码显示
-(void)saoMiao{

ZBarReaderViewController *reader = [ZBarReaderViewController new];
reader.readerDelegate = self;
//   reader.readerView.torchMode = 1;
ZBarImageScanner *scanner = reader.scanner;
reader.supportedOrientationsMask = UIInterfaceOrientationPortrait;
[scanner setSymbology: ZBAR_ISBN13 & ZBAR_ISBN10
config: ZBAR_CFG_ENABLE
to: 1];

NSArray *ary=[reader.view subviews];//这个方法主要是去掉里面title 的button按钮的
UIView *readerSubview=[ary objectAtIndex:1];
NSArray *ary11=[readerSubview subviews];
UIToolbar *tooB=[ary11 objectAtIndex:0];
tooB.backgroundColor=[UIColor whiteColor];
NSArray *ary22=[tooB subviews];
UIButton *btn=[ary22 objectAtIndex:3];
btn.hidden=YES;

UIView *bgview = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1024, 768)];
//bgview.alpha = 0.3;
bgview.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"zz.png"]];加一个全屏的框
[reader.view addSubview:bgview];

[self presentViewController:reader animated:YES completion:nil];

}
- (void) imagePickerController: (UIImagePickerController*) reader

didFinishPickingMediaWithInfo: (NSDictionary*) info

{
// 得到条形码结果
id<NSFastEnumeration> results =

[info objectForKey: ZBarReaderControllerResults];
ZBarSymbol *symbol = nil;

for(symbol in results)
// EXAMPLE: just grab the first barcode
break;

// 将获得到条形码显示到我们的界面上

textFields.text = symbol.data;

// 扫描时的图片显示到我们的界面上
//    resultImage.backgroundColor = [UIColor colorWithPatternImage:[info objectForKey: UIImagePickerControllerOriginalImage]];
//    resultImage = [info objectForKey: UIImagePickerControllerOriginalImage];

// 扫描界面退出

//    [reader dismissModalViewControllerAnimated: YES];
//    [self performSelector:@selector(jianPanSearch) withObject:Nil afterDelay:0];

[self dismissViewControllerAnimated:NO completion:nil];
[self jianPanSearch];

}

5 实现九宫格的button，或者各种uiview 的实现简单的算法实现：

　　int width = scroll.frame.size.width/4;
for (int i=0; i<arrysImage.count; i++) {
int t=i/4;//t是行数，d是列数
int d=fmod(i, 4);
UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(width*d +d*5+10, 300 * t+t*50, 225,300)];
btn.tag=i+5000;
[btn addTarget:self action:@selector(imageClcik:) forControlEvents:UIControlEventTouchUpInside];
[scroll addSubview:btn];
[btn setImage:[UIImage imageWithData:[DataPist stringToByte:imageNames]] forState:UIControlStateNormal];
}

6 实现简单的上来刷新，用的也是EGORefreshTableHeaderView，这个比较简单的，就是先初始化，然后调用那几个方法，

//此方法是开始读取数据
- (void)reloadTableViewDataSource{

//  should be calling your tableviews data source model to reload
//  put here just for demo
_reloading = YES;
NSLog(@"star");
number = arrysImage.count;
//    NSLog(@"%d",number);
//打开线程，读取网络图片
[NSThread detachNewThreadSelector:@selector(requestLoadData) toTarget:self withObject:nil];

}

//此方法是结束读取数据 结束读取数据在是在要显示的 view 的显示后面方法
- (void)doneLoadingTableViewData{

//  model should call this when its done loading
_reloading = NO;
[_refreshHeaderView egoRefreshScrollViewDataSourceDidFinishedLoading:scroll];
NSLog(@"end");
}
#pragma mark -
#pragma mark UIScrollViewDelegate Methods

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{

[_refreshHeaderView egoRefreshScrollViewDidScroll:scrollView];

}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{

[_refreshHeaderView egoRefreshScrollViewDidEndDragging:scrollView];

}

#pragma mark -
#pragma mark EGORefreshTableHeaderDelegate Methods

- (void)egoRefreshTableHeaderDidTriggerRefresh:(EGORefreshTableHeaderView*)view{
[self reloadTableViewDataSource];
//[self performSelector:@selector(doneLoadingTableViewData) withObject:nil afterDelay:0.5];

}

- (BOOL)egoRefreshTableHeaderDataSourceIsLoading:(EGORefreshTableHeaderView*)view{

return _reloading; // should return if data source model is reloading

}

- (NSDate*)egoRefreshTableHeaderDataSourceLastUpdated:(EGORefreshTableHeaderView*)view{

return [NSDate date]; // should return date data source was last changed

}

还有一个就是加载数据后，显示在页面的view要调用 [scroll setContentSize:CGSizeMake(0,350*(arrysImage.count/4))];
_refreshHeaderView.frame=CGRectMake(0, scroll.contentSize.height, 1024, 700);，这个比较麻烦的就是_refreshHeaderView最后位置的判断，

还有一个问题就是数据的更新请求数据arrayByAddingObjectsFromArray方法，实现

-(void)requestLoadData{
NSString *post;

post=[NSString stringWithFormat:@"%@/api/pull_down.php?page_number=%d&is_upcoming=%@",[DataPist shared].ipString,tag,type];

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:post]];
NSURLResponse *urlResponce=nil;
NSError *error=nil;
NSData *data=[NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponce error:&error];
if (error) {
UIAlertView *alter=[[UIAlertView alloc]initWithTitle:@"提示" message:@"当前网络不可用,请稍后再试" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alter show];
return;
}

NSArray   *arrys= [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];

NSArray *currentArrys=[[NSArray alloc]initWithArray:arrys];

if (arrys.count==0) {
[self doneLoadingTableViewData];
//        [_refreshHeaderView removeFromSuperview];
return;
}

arrysImage=[arrysImage arrayByAddingObjectsFromArray:currentArrys];//数组的组合添加在尾部
[self performSelectorOnMainThread:@selector(initImage:) withObject:@"smallImage" waitUntilDone:YES];
tag=tag+20;
}

7 在ios中操作plist实现删除，添加，操作的实现，主要是参考别人的方法，谢谢那位高手，后面有时间找出他的文章，贴出来，写在一个类了，里面.h文件

@interface SavePList : NSObject
+ (SavePList *)sharedInstance;
-(NSString*)getPlistPath:(NSString *)PlistName;
-(BOOL) isPlistFileExists:(NSString *)PlistName;
-(void)initPlist:(NSString *)plistName;
////判断key的书是否存在
-(BOOL)isBookExistsForKey:(NSString*)key name:(NSString *)plistName;
-(void)removeBookWithKey:(NSString *)key name:(NSString *)plistName;
-(void)deletePlist:(NSString *)plsitName;
-(void)writePlist:(NSMutableDictionary*)dictionary forKey:(NSString *)key  plsitName:(NSString *)plistName;
-(NSMutableDictionary*)readPlist:(NSString *)plistName;
-(void)readPlist:(NSMutableDictionary **)dictionary name:(NSString *)plistName;
-(void)replaceDictionary:(NSMutableDictionary *)newDictionary withDictionaryKey:(NSString *)key name:(NSString *)plistName;
@end

.m文件

#import "SavePList.h"

@implementation SavePList
static SavePList *g_instance = nil;

+ (SavePList *)sharedInstance
{
@synchronized(self) {
if ( g_instance == nil ) {
g_instance = [[self alloc] init];
}
}
return g_instance;
}

//获得plist路径
-(NSString*)getPlistPath:(NSString *)PlistName{
//    //沙盒中的文件路径
//    NSArray *storeFilePath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//    NSString *doucumentsDirectiory = [storeFilePath objectAtIndex:0];
//    NSString *plistPath =[doucumentsDirectiory stringByAppendingPathComponent:@"data.plist"];       //根据需要更改文件名
//    return plistPath;
//写入library
NSString *fileNamepath;
NSString *path=[NSHomeDirectory() stringByAppendingPathComponent:@"Library"];

NSString *pathNext = [NSString stringWithFormat:@"%@/Caches",path];

if ([PlistName isEqualToString:@"dataOne"]) {
fileNamepath=[pathNext stringByAppendingPathComponent:@"dataOne.plist"];
}

if ([PlistName isEqualToString:@"dataTwo"]) {
fileNamepath=[pathNext stringByAppendingPathComponent:@"dataTwo.plist"];
}
if ([PlistName isEqualToString:@"dataThree"]) {
fileNamepath=[pathNext stringByAppendingPathComponent:@"dataThree.plist"];
}
if ([PlistName isEqualToString:@"numpluse"]) {
fileNamepath=[pathNext stringByAppendingPathComponent:@"numpluse.plist"];
}

return fileNamepath;
}

//判断沙盒中名为plistname的文件是否存在
-(BOOL) isPlistFileExists:(NSString *)PlistName{

NSString *plistPath =[[SavePList sharedInstance]getPlistPath:PlistName];
NSFileManager *fileManager = [NSFileManager defaultManager];
if( [fileManager fileExistsAtPath:plistPath]== NO ) {
NSLog(@"not exists");
return NO;
}else{
return YES;
}

}

-(void)initPlist:(NSString *)plistName{
NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plistName];

//如果plist文件不存在，将工程中已建起的plist文件写入沙盒中
if (! [[SavePList sharedInstance] isPlistFileExists:plistName]) {

//从自己建立的plist文件 复制到沙盒中 ，方法一

if ([plistName isEqualToString:@"dataOne"]) {
NSError *error;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"dataOne" ofType:@"plist"];
[fileManager copyItemAtPath:bundle toPath:plistPath error:&error];        }

if ([plistName isEqualToString:@"dataTwo"]) {
NSError *error;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"dataTwo" ofType:@"plist"];
[fileManager copyItemAtPath:bundle toPath:plistPath error:&error];        }
if ([plistName isEqualToString:@"dataThree"]) {
NSError *error;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"dataThree" ofType:@"plist"];
[fileManager copyItemAtPath:bundle toPath:plistPath error:&error];        }
if ([plistName isEqualToString:@"numpluse"]) {
NSError *error;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"numpluse" ofType:@"plist"];
[fileManager copyItemAtPath:bundle toPath:plistPath error:&error];
}

//方法二
//        NSString *path = [[NSBundle mainBundle] pathForResource:@"WBBooks"ofType:@"plist"];
//        NSMutableDictionary *activityDics = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
//        [activityDics writeToFile:plistPath atomically:YES];
}
}

//判断key的书是否存在
-(BOOL)isBookExistsForKey:(NSString*)key name:(NSString *)plistName{

NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plistName];
NSMutableDictionary *WBBooksDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];

//根目录下存在名为bookname的字典
if ([WBBooksDictionary objectForKey:key]) {
return YES;
}else{
return NO;
}
}

//根据key值删除对应书籍
-(void)removeBookWithKey:(NSString *)key name:(NSString *)plistName{

NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plistName];
NSMutableDictionary *WBBooksDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];

[WBBooksDictionary removeObjectForKey:key];
[WBBooksDictionary writeToFile:plistPath atomically:YES]; //删除后重新写入
NSLog(@"删除后%@",WBBooksDictionary);

}

//删除plistPath路径对应的文件
-(void)deletePlist:(NSString *)plsitName{

NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plsitName];
[fileManager removeItemAtPath:plistPath error:nil];

}

//将dictionary写入plist文件，前提：dictionary已经准备好
-(void)writePlist:(NSMutableDictionary*)dictionary forKey:(NSString *)key  plsitName:(NSString *)plistName{

NSMutableDictionary *plistDictionary = [[NSMutableDictionary alloc]init];

//如果已存在则读取现有数据
if ([[SavePList sharedInstance]isPlistFileExists:plistName]) {
plistDictionary = [[SavePList sharedInstance]readPlist:plistName];
}

//增加一个数据
[plistDictionary setValue:dictionary forKey:key]; //在plistDictionary增加一个key为...的value

NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plistName];
NSLog(@"---%@",plistPath);

if([plistDictionary writeToFile:plistPath atomically:YES]){
NSLog(@"write ok!");
}else{
NSLog(@"ddd");
}

NSLog(@"plistDictionary=%@",plistDictionary);
}

//
-(NSMutableDictionary*)readPlist:(NSString *)plistName{

NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plistName];
NSMutableDictionary *resultDictionary = [[NSMutableDictionary alloc]initWithContentsOfFile:plistPath];
return resultDictionary;
}

//读取plist文件内容复制给dictionary   备用
-(void)readPlist:(NSMutableDictionary **)dictionary name:(NSString *)plistName{
NSString *plistPath = [[SavePList sharedInstance] getPlistPath:plistName];
*dictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];
}

//更改一条数据，就是把dictionary内key重写
-(void)replaceDictionary:(NSMutableDictionary *)newDictionary withDictionaryKey:(NSString *)key name:(NSString *)plistName{

[[SavePList sharedInstance]removeBookWithKey:key name:plistName];
[[SavePList sharedInstance]writePlist:newDictionary forKey:key  plsitName:plistName];

}

-(NSInteger)getBooksCount:(NSString *)plistName{

NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];
dictionary = [[SavePList sharedInstance] readPlist:plistName];
return [dictionary count];

}
@end

因为我建立了3个plist文件，所以再项目中建立了3个plist ，有的问题的是，我必须得在项目中把3个对应名字的空的plist先建号，然后才能用，这点当时因为没时间多想，就那样了，上面主要是添加，删除，操作了，，

8 遍历沙盒文件夹里面的所有文件方法

- (NSArray*) allFilesAtPath:(NSString*) dirString {
// NSMutableArray* array = [NSMutableArray arrayWithCapacity:10];
NSFileManager* fileMgr = [NSFileManager defaultManager];
NSArray* tempArray = [fileMgr contentsOfDirectoryAtPath:dirString error:nil];
return tempArray;
}

9 删除沙盒下面所有文件夹的方法

//删除所有documents中的数据
NSFileManager *fileManage = [NSFileManager defaultManager];
NSString *myDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
NSArray *file = [fileManage subpathsOfDirectoryAtPath: myDirectory error:nil];
// NSLog(@"%@",file);
if (file.count != 0) {
for (int i = 0; i < file.count; i++) {
NSString *str = [NSString stringWithFormat:@"%@/%@",myDirectory,[file objectAtIndex:i]];
[fileManage removeItemAtPath:str error:Nil];
}
}

10 在一个UIViewController里面点击按钮添加一个view

detailChanPinView=[[DetailChanPinView alloc]initWithFrame:CGRectMake(0, 0, 1024, self.view.frame.size.height)];
detailChanPinView.BigImageName=bigName;
[UIView transitionWithView:self.view
duration:0.5
options:UIViewAnimationOptionTransitionCrossDissolve
animations:^{
[self.view addSubview:detailChanPinView];
;
}
completion:^(BOOL fisish){

}];

当时主要问题是传值的问题，不知道怎么搞的一直无法传过去，最后用简单的方法 NSUserDefaults，和消息注册实现的，

先写这吧，后面在写了，