方法常用：
1,- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
2,- (float)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
3,- (int)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
4,- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
tableview 常用代理方法
staticNSString* courseIdentifier = @"CourseCell";
CourseCell* cell = [tableView dequeueReusableCellWithIdentifier:courseIdentifier];
if (!cell)
{
NSArray* array = [[UINibnibWithNibName:courseIdentifier bundle:nil] instantiateWithOwner:selfoptions:nil];
cell = [array lastObject];
}
[self.mTableViewreloadData];
tableviewcell 重用,注意identifier,注意reloadData的含义，就是告诉tableview俺有数据需要加载了，有新的数据了。
-(IBAction)changeState:(id)sender
{
UIButton *button = (UIButton *)sender;
if (button.tag == 0) {
[selfloadData_category:XIN_NEI_LAO_NIAN_KElastId:@""];
buttonState = 0;
[self.xinnei_buttonsetEnabled:NO];
[self.shennei_buttonsetEnabled:YES];
[self.daiding_buttonsetEnabled:YES];
self.tempArray = self.xinnei_laonian_array;
[self.mTableViewreloadData];
}elseif (button.tag == 1) {
[selfloadData_category:SHEN_NEI_KElastId:@""];
buttonState = 1;
[self.xinnei_buttonsetEnabled:YES];
[self.shennei_buttonsetEnabled:NO];
[self.daiding_buttonsetEnabled:YES];
self.tempArray = self.shennei_array;
[self.mTableViewreloadData];
}elseif (button.tag == 2) {
buttonState = 2;
[self.xinnei_buttonsetEnabled:YES];
[self.shennei_buttonsetEnabled:YES];
[self.daiding_buttonsetEnabled:NO];
self.tempArray = self.daiding_array;
[self.mTableViewreloadData];
}
}
状体改变，button 设置不同的状体，加载不同的数据
cell.contentView.backgroundColor = [[UIColoralloc] initWithRed:255/255.0
green:248/255.0
blue:240/255.0
alpha:1];
设置cell背景颜色
[cell.lecturer1ButtonaddTarget:selfaction:@selector(turnToLectureIntroduce:) forControlEvents:UIControlEventTouchUpInside];
[cell.lecturer2ButtonaddTarget:selfaction:@selector(turnToLectureIntroduce:) forControlEvents:UIControlEventTouchUpInside];
手动给button连接对应事件，方法
cell.lecturer1Button.tag = [indexPath row]*2;
cell.lecturer2Button.tag = [indexPath row]*2+1;
UIButton* button = (UIButton*)sender;
Course *course = [self.tempArrayobjectAtIndex:button.tag/2];
Teacher *teacher =nil;
if (button.tag%2== 0) {
teacher = [course.teachersobjectAtIndex:0];
}else{
teacher = [course.teachersobjectAtIndex:1];
}
一个设置的小技巧，关于tag
UIAlertView *alert = [[[UIAlertViewalloc] initWithTitle:@"只有登录后才能预约，是否进行登录？" message:nil delegate:selfcancelButtonTitle:nilotherButtonTitles:@"登录",@"取消", nil] autorelease];
[alert show];
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0){
LoginViewController* controller = [[[LoginViewControlleralloc] init] autorelease];
controller.isFromCourse = YES;
controller.reservationButton = reservationButton;
controller.executeReservationRquestDelegate = self;
[SharedAppDelegate.window.rootViewControllerpresentModalViewController:controller animated:YES];
}
alertview 外加一个代理使用
- (void)loadData_category:(NSString *)category lastId :(NSString *)lastId{
NSString *deviceId = [[UIDevicecurrentDevice] uniqueGlobalDeviceIdentifier];
NSString *userIdString = SharedAppDelegate.accountInfo.accountId;
NSURL* url = [NSURLURLWithString:COURSEURL];
AFHTTPClient* httpClient = [[AFHTTPClientalloc] initWithBaseURL:url];
NSDictionary *param = [NSDictionarydictionaryWithObjectsAndKeys:
lastId, @"last_id",
[NSStringstringWithFormat:@"%d", PAGESIZE], @"page_size",
category, @"class_name",
userIdString,@"userid",
deviceId,@"device_id",
nil];
TTLog(@"params:%@", param);
NSURLRequest* request = [httpClient requestWithMethod:@"POST"path:@""parameters:param];
AFJSONRequestOperation *operation = [AFJSONRequestOperationJSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
[selfhiddenHUD];
TTLog(@"response:%@", JSON);
ResponseState *state = [ResponseStateresponseStateWithDic:JSON];
courseHasMore = state.hasMore
}failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
TTLog(@"failed:%@", error);
[selfhiddenHUD];
}];
[operation start];
[selfshowHUD];
}
初始化一个dictionary,进行一次网络请求，注意这个过程是异步的，有时候可能出现数据不同步的现象。
a.h
@protocol ExecuteReservationRquestDelegate <NSObject>
-(void)reservation:(id)sender flag:(int)flag;
@end
@interface LoginViewController : BaseViewController <TencentSessionDelegate>
{
NSString *openId;
}
a.m
[self.executeReservationRquestDelegatereservation:self.reservationButtonflag:1];
@property (nonatomic,assign )id <ExecuteReservationRquestDelegate>executeReservationRquestDelegate;
@end
b.h
@interface CourseViewController : BaseViewController <UITableViewDataSource, UITableViewDelegate,UIAlertViewDelegate,ExecuteReservationRquestDelegate>
b.m
controller.executeReservationRquestDelegate = self;
一个代理的使用
@interface NSDictionary(NullReplace)
- (id)valueForKeyNotNull:(NSString *)key;
@end
@interface ResponseState : NSObject
@property (retain, nonatomic) NSString *responseMessage;
@property (nonatomic) int responseCode;
@property (nonatomic) int hasMore;
@implementation NSDictionary(NullReplace)
- (id)valueForKeyNotNull:(NSString *)key{
id object = [selfvalueForKey:key];
if ([object isKindOfClass:[NSNumberclass]]
|| [object isKindOfClass:[NSStringclass]]
|| [object isKindOfClass:[NSArrayclass]]
|| [object isKindOfClass:[NSDictionaryclass]]) {
return object;
}
returnnil;
}
@end
@implementation NSArray(NullReplace)
- (id)valueForKeyNotNull:(NSString *)key{
returnnil;
}
@end
@implementation ResponseState
@synthesize responseCode;
@synthesize responseMessage;
+ (ResponseState *)responseStateWithDic:(NSDictionary *)dic{
ResponseState *state = [[[ResponseStatealloc] init] autorelease];
state.responseCode = [[dic valueForKeyNotNull:@"code"] intValue];
state.responseMessage = [dic valueForKeyNotNull:@"message"];
state.hasMore = [[dic valueForKeyNotNull:@"has_more"] intValue];
// state.newsId = [[dic valueForKeyNotNull:@"news_id"]];
return state;
}
@end
一个model 以及对json的解析过程
+(NSString *)getFilePath
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* filePath = [documentsDirectory stringByAppendingPathComponent:FILENAME];
return filePath;
}
//读取文件数据
+(NSString *)readFromFile
{
NSError *error;
NSString *filePath = [selfgetFilePath];
NSString *stringData = [NSStringstringWithContentsOfFile:filePath encoding:NSUTF8StringEncodingerror:&error];
if (stringData == nil) {
TTLog(@"read error %@",[error localizedFailureReason]);
returnnil;
}
else{
return stringData;
}
}
+(BOOL)writeToFile_DataString:(NSString *)dataString
{
NSError *error;
NSString *filePath = [selfgetFilePath];
return [dataString writeToFile:filePath atomically:YESencoding:NSUTF8StringEncodingerror:&error];
}
一个传说中的缓存，注意获取的是iphone手机上的doucument目录，可读可写
NSString *jsonString = [ReadWriteDataToFilereadFromFile];
id JsonFromCache = [jsonString JSONValue];
[ReadWriteDataToFilewriteToFile_DataString:[JSON JSONRepresentation]];
self.xinnei_laonian_array = [CoursecourseListWithDic:JSON];
self.tempArray = [CoursecourseListWithDic:JSON];
一个是将string 转为json,一个是将json转换为string,注意需要两个文件，#import "NSObject+SBJSON.h"#import "NSString+SBJSON.h"，根据类名字可以判断是通过类别给它们类扩展的方法。
NSString *deviceId = [[UIDevicecurrentDevice] uniqueGlobalDeviceIdentifier];#import "UIDevice+ID.h"
一获得deviceid 的方法
- (void)viewDidLoad
{
[superviewDidLoad];
[self.xinnei_buttonsetEnabled:NO];
buttonState = 0;
[selfloadDataFromCashe_JSON];
[selfloadData_category:XIN_NEI_LAO_NIAN_KElastId:@""];
[selfloadData_category:SHEN_NEI_KElastId:@""];
[selfloadData_category:@""lastId:@""];
}
注意viewdidload的加载顺序，viewdidload 应该写在前面。boss说的
self.navigationController popViewControllerAnimated:<#(BOOL)#>
self.navigationController pushViewController:<#(UIViewController *)#> animated:<#(BOOL)#>
viewcontroller presentModalViewController:<#(UIViewController *)#> animated:<#(BOOL)#>
viewcontroller dismissModalViewControllerAnimated:<#(BOOL)#>
关于controller的显示和隐藏，一个是在navigationcontroller 中的使用，一个是普通controller的使用
self.window = [[UIWindowalloc] initWithFrame:[[UIScreenmainScreen] bounds]];
self.navigationController = [[[UINavigationControlleralloc] initWithRootViewController:self.tabBarController] autorelease];
self.window.rootViewController = self.navigationController;
[self.windowmakeKeyAndVisible];
项目开始时候的加载，app delegate 有个win do w ，而window 有个rootviewcontroller 最初的梦想
NSURL *url = [NSURLURLWithString:CONTENTINTRODUCE];
NSURLRequest * request = [NSURLRequestrequestWithURL:url];
[self.contentWebViewloadRequest:request];
[superviewDidLoad];
webview 的加载
#pragma mark Setters
- (void)doneLoadingTableViewData{
[moreButtonhideIndicator];
reloading = NO;
[self.tableViewreloadData];
[refreshHeaderViewegoRefreshScrollViewDataSourceDidFinishedLoading:self.tableView];
}
#pragma mark UIScrollViewDelegate Methods
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
[refreshHeaderViewegoRefreshScrollViewDidScroll:scrollView];
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
[refreshHeaderViewegoRefreshScrollViewDidEndDragging:scrollView];
}
#pragma mark - EGERefreshTableHeaderViewDelegate Methods
- (void)egoRefreshTableHeaderDidTriggerRefresh:(EGORefreshTableHeaderView*)view{
reloading = YES;
[selfreloadTableViewDataSource];
}
- (BOOL)egoRefreshTableHeaderDataSourceIsLoading:(EGORefreshTableHeaderView*)view{
returnreloading; // should return if data source model is reloading
}
- (NSDate*)egoRefreshTableHeaderDataSourceLastUpdated:(EGORefreshTableHeaderView*)view{
return [NSDatedate]; // should return date data source was last changed
}
- (void)loadSubView{
if (refreshHeaderView == nil) {
EGORefreshTableHeaderView *view = [[EGORefreshTableHeaderViewalloc] initWithFrame:CGRectMake(0.0f, 0.0f - self.tableView.bounds.size.height, self.view.frame.size.width, self.tableView.bounds.size.height)] ;
view.delegate = self;
[self.tableViewaddSubview:view];
refreshHeaderView = view;
[view release];
}
}
@end
EGORefreshTableHeaderDelegate
#import "EGORefreshTableHeaderView.h"
关于那个下拉刷新的效果对应的部分代码
@property (strong,nonatomic)IBOutletUIButton *hotSpotButton;
其中有些需要注意的就是，选择 strong= retain还是weak = assign,non atomic 是原子相关的。在需要的时候就用iboutlet插座变量，以便外面的变量来访问。据说版本不同，有的自动@synthesize
initWithFrame:CGRectMake，cgsize里面有宽度有个高度 ,这个是调整大小的，以及相对位置， content isEqualToString:CGSize sizeOne = [teacher1.namesizeWithFont:cell.lecturer1Button.titleLabel.font];,计算字体的面积
关于控件大小的一些设置
NSArray* array = [[UINibnibWithNibName:courseIdentifier bundle:nil] instantiateWithOwner:selfoptions:nil];
cell = [array lastObject];
[UIViewController alloc]initWithNibName:<#(NSString *)#> bundle:<#(NSBundle *)#>;
策略：声明个变量记住一下自己想记住的信息。