Iphone TableView 使用实现

来源：互联网发布：javascript 预编译编辑：程序博客网时间：2024/05/01 07:02

TableView 加载不到数据

1、视图连线没有指定数据源

2、视图指定代理类，也就是他的本身。

3、头文件继承 UIViewController<UITableViewDelegate,UITableViewDataSource>

头文件

#import <UIKit/UIKit.h>

@class ViewController;

@interface AllCoursesViewController :UIViewController<UITableViewDelegate,UITableViewDataSource>

{

IBOutlet UITableView *table;

IBOutlet UITextField *textField;

IBOutlet UIButton *button;

IBOutlet UILabel *nameTitleLable;

//NSMutableArray *typeArray;

NSMutableArray *contentArray;

//int typeId;

//NSMutableDictionary *dictionary;

ViewController *mViewController;

//IBOutlet UILabel *typeNameLabel;

BOOL typeChooseHttp;

UIView *typeView;

BOOL typeViewSHow;

}

@property(nonatomic,retain)ViewController *mViewController;

-(void)checkDetailWith:(NSMutableDictionary *)dic;

-(IBAction)backView:(id)sender;

-(IBAction)textFiledDoneEditing:(id)sender;

-(IBAction)searchCourse:(id)sender;

-(void)choosetype:(id)sender;

-(IBAction)viewShow:(id)sender;

@end

实现文件

#import "ViewController.h"

#import "AllCoursesViewController.h"

#import "AllCoursesTableViewCell.h"

#import "ASIFormDataRequest.h"

#import "ConstDefine.h"

#import "JSON.h"

#import "UIHelp.h"

#import <QuartzCore/QuartzCore.h>

@interface AllCoursesViewController ()

@end

NSString* COURSE_TYPES[]={@"全部",@"心理学",@"数理",@"哲学",@"人文",@"经济",@"TED",@"生物学"};

NSString* COURSE_ICONS[]={@"item02.png",@"item05.png",@"item04.png", @"item06.png",

@"item03.png",@"item01.png",@"item08.png", @"shengwu.png"};

@implementation AllCoursesViewController

@synthesize mViewController;

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

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

}

return self;

}

-(IBAction)backView:(id)sender

{

[mViewController.navigationControllerpopViewControllerAnimated:YES];

}

- (void)viewDidLoad

{

[superviewDidLoad];

// Do any additional setup after loading the view from its nib.

//typeArray = [[NSMutableArray alloc] init ];

contentArray = [[NSMutableArrayalloc]init ];

typeView.backgroundColor =[UIColorclearColor];

// button = [UIButton buttonWithType:UIButtonTypeCustom];

typeViewSHow = NO;

if (typeViewSHow ==YES) {

typeView.hidden =NO;

[button setBackgroundImage:[UIImageimageNamed:@"3.png"]forState:UIControlStateNormal];

}

else

{

typeView.hidden =YES;

[button setBackgroundImage:[UIImageimageNamed:@"2.png"]forState:UIControlStateNormal];

}

NSString *defaultCourseType = COURSE_TYPES[0];

nameTitleLable.text = [NSStringstringWithFormat:@"%@课程", defaultCourseType];

typeView = [[UIViewalloc]init];

typeView.backgroundColor = [UIColorgrayColor];

UIImageView *backImage = [[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"更多课程.png" ]];

[typeView addSubview:backImage];

CGRect buttonRect = CGRectMake(24, 5, 51, 59);

CGRect nameRect = CGRectMake(24, 65, 50, 14);

int jiange =23;

int height;

for (int i = 0; i < 8; i++) {

UIButton* btn = [UIButtonbuttonWithType:UIButtonTypeCustom];

UILabel *label = [[UILabelalloc]initWithFrame:nameRect];

label.font =[UIFontfontWithName:FontNamesize:14];

btn.frame = buttonRect;

//NSDictionary *dic = [typeArray objectAtIndex:i];

// int type = [[dic objectForKey:@"typeid"] integerValue];

//[self imageWithUrl:[dic objectForKey:@"typepictureurl"] withButton:btn];

UIImage *image = [UIImageimageNamed:COURSE_ICONS[i]];

[btn setBackgroundImage:imageforState:UIControlStateNormal];

btn.tag = i;

[btn addTarget:selfaction:@selector(choosetype:)forControlEvents:UIControlEventTouchUpInside];

[typeView addSubview:btn];

// [typeView addSubview:label];

if(i%4==3)

{

//height = nameRect.origin.y;

buttonRect.origin.x =24, buttonRect.origin.y=buttonRect.origin.y+59;

// nameRect.origin.x =24 , nameRect.origin.y=nameRect.origin.y+74;

}

else

{

buttonRect.origin.x+=buttonRect.size.width+jiange;

}

backImage.frame = CGRectMake(0, 0, 320, buttonRect.origin.y+5);

typeView.frame =CGRectMake(0, 44, 320, buttonRect.origin.y+5);

[self.viewaddSubview:typeView];

typeView.hidden =YES;

[self connecthttp:defaultCourseType];

}

-(void)choosetype:(id)sender

{

if (typeViewSHow ==NO) {

typeViewSHow = YES;

}

else

typeViewSHow = NO;

if (typeViewSHow ==YES) {

typeView.hidden =NO;

[button setBackgroundImage:[UIImageimageNamed:@"3.png"]forState:UIControlStateNormal];

}

else

{

typeView.hidden =YES;

[button setBackgroundImage:[UIImageimageNamed:@"2.png"]forState:UIControlStateNormal];

}

UIButton *clickedFuncButton = (UIButton *) sender;

NSString *coursetype = COURSE_TYPES[clickedFuncButton.tag];

nameTitleLable.text = [NSStringstringWithFormat:@"%@课程", coursetype];

//[UIHelp showHint:[[NSString alloc] initWithFormat:@"选择分类: %@", coursetype] intView:self.view];

[self connecthttp:coursetype];

}

-(void)imageWithUrl:(NSString*)stringurl withButton:(UIButton*)btn

{

dispatch_queue_t network;

network =dispatch_queue_create("com.myapp.network",nil);

dispatch_async(network, ^

{

NSData* data= [NSDatadataWithContentsOfURL:[NSURLURLWithString:stringurl]];

UIImage *mimage = [UIImageimageWithData:data];

dispatch_async(dispatch_get_main_queue(), ^{

[btn setBackgroundImage:mimageforState:UIControlStateNormal];

});

}

-(void)connecthttp: (NSString *)coursetype

{

typeView.hidden =YES;

NSURL *url = [NSURLURLWithString:@"http://223.4.169.93:8080/microcourseapi/a=get_courses"];

//ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];

ASIFormDataRequest *asiRequest = [[ASIFormDataRequestalloc]initWithURL:url];

[asiRequest setRequestMethod:@"POST"];

[asiRequest addPostValue:HASHforKey:@"loginhashcode"];

[asiRequest addPostValue:coursetype forKey:@"coursetype"];

[asiRequest buildPostBody];

[asiRequest setDelegate:self];

[asiRequest startSynchronous];

NSData *responseData = [asiRequest responseData];

NSString* returnString = [[NSStringalloc]initWithData:responseData encoding:NSUTF8StringEncoding];

SBJsonParser *parser = [[SBJsonParseralloc]init];

NSDictionary *result = [parserobjectWithString:returnString];

if ([[result objectForKey:@"code"]intValue]==0) {

// 清空课程列表

[contentArray removeAllObjects];

[contentArray addObjectsFromArray:[result objectForKey:@"list"]];

NSLog(@"%d",[contentArraycount]);

}

else {

// [UIHelp showHint:[result objectForKey:@"msg"] intView:self.view];

}

[table reloadData];

[asiRequest release];

[parser release];

}

-(IBAction)viewShow:(id)sender

{

if (typeViewSHow ==NO) {

typeViewSHow = YES;

}

else

typeViewSHow = NO;

if (typeViewSHow ==YES) {

typeView.hidden =NO;

[button setBackgroundImage:[UIImageimageNamed:@"3.png"]forState:UIControlStateNormal];

}

else

{

typeView.hidden =YES;

[button setBackgroundImage:[UIImageimageNamed:@"2.png"]forState:UIControlStateNormal];

}

- (void)viewDidUnload

{

[superviewDidUnload];

// Release any retained subviews of the main view.

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

}

// 多少个组参考iphone手机上的设置

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

//这个方法用来告诉表格有几个分组

return 1;

}

//多少行类似androd 返回总数

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

NSLog(@"%d",[contentArraycount]);

return [contentArraycount];

}

//显示每行视图

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"CustomCellIdentifier";

AllCoursesTableViewCell *cell = (AllCoursesTableViewCell *)[tableViewdequeueReusableCellWithIdentifier:CellIdentifier];

// if (cell == nil) {

cell = [[[AllCoursesTableViewCellalloc]initWithStyle:UITableViewCellStyleSubtitlereuseIdentifier:CellIdentifier]autorelease];

// NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"AllCoursesTableViewCell" owner:self options:nil];

// cell = [array objectAtIndex:0];

cell.mViewController =self;

UIImageView *image = [[UIImageViewalloc]initWithFrame:cell.frame];

image.image= [UIImageimageNamed:@"课程选中框.png"];

cell.selectedBackgroundView = image;

[image release];

NSMutableDictionary *dic = [contentArrayobjectAtIndex:indexPath.row];

// NSLog(@"%@",dic);

[cell changeDataWith:dic];

// // }

return cell;

}

-(IBAction)textFiledDoneEditing:(id)sender

{

[sender resignFirstResponder];

}

-(IBAction)searchCourse:(id)sender

{

[textFieldresignFirstResponder];

if (textField.text==nil||[textField.textlength]==0)

{

[UIHelpshowHint:@"请输入关键字！" intView:self.view];

return;

}

NSURL *url = [NSURLURLWithString:@"http://223.4.169.93:8080/microcourseapi/a=search_courses"];

//ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];

ASIFormDataRequest *asiRequest = [[ASIFormDataRequestalloc]initWithURL:url];

[asiRequest setRequestMethod:@"POST"];

[asiRequest addPostValue:HASH forKey:@"loginhashcode"];

[asiRequest addPostValue:textField.textforKey:@"keyword"];

[asiRequest buildPostBody];

[asiRequest setDelegate:self];

[asiRequest startSynchronous];

NSData *responseData = [asiRequestresponseData];

NSString* returnString = [[NSStringalloc]initWithData:responseData encoding:NSUTF8StringEncoding];

SBJsonParser *parser = [[SBJsonParseralloc]init];

NSDictionary *result = [parserobjectWithString:returnString];

if ([[resultobjectForKey:@"code"]intValue]==0) {

[contentArrayremoveAllObjects];

[contentArrayaddObjectsFromArray:[resultobjectForKey:@"list"]];

NSLog(@"%d",[contentArraycount]);

[tablereloadData];

}

else {

[UIHelpshowHint:[resultobjectForKey:@"msg"]intView:self.view];

}

[asiRequest release];

[parser release];

}

//设置每行的行高

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

return 110.0;

}

//选中某行时，作出响应

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

[tableView deselectRowAtIndexPath:[tableView indexPathForSelectedRow]animated:YES];

int row = [indexPathrow];

NSMutableDictionary *dic = [contentArrayobjectAtIndex:row];

[selfcheckDetailWith:dic];

}

-(void)checkDetailWith:(NSMutableDictionary *)dic

{

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

returnNO;//(interfaceOrientation == UIInterfaceOrientationPortrait);

}

@end