ios知识整理

1.跳转界面

//            jrspxsViewController *jrspxsVC=[[jrspxsViewController alloc] initWithNibName:@"jrspxsViewController" bundle:nil];

//            [self presentViewController:jrspxsVC animated:YES completion:nil];

//            [jrspxsVC release];

            

            //存储用户名

            NSUserDefaults *user=[NSUserDefaultsstandardUserDefaults];

            [usersetValue:qqTextforKey:@"UserName"];

            indexViewController *indexVC=[[indexViewControlleralloc]initWithNibName:@"indexViewController"bundle:nil];

            //返回上一个界面

            UINavigationController *nav=[[UINavigationControlleralloc]initWithRootViewController:indexVC];

            

            [selfpresentViewController:nav animated:YES completion:nil];

            [indexVCrelease];

            [navrelease];

2.

- (void)viewDidLoad

{

    [superviewDidLoad];

    //添加back按钮返回上一个界面

    UIBarButtonItem *leftbtn=[[UIBarButtonItemalloc]initWithTitle:@"back"style:UIBarButtonItemStyleBorderedtarget:selfaction:@selector(buttonBack)];

    self.navigationItem.leftBarButtonItem=leftbtn;

    [leftbtnrelease];

}

-(void)buttonBack{

    [selfdismissViewControllerAnimated:YEScompletion:nil];

}

3.弹出对话框

UIAlertView *alter=[[UIAlertViewalloc]initWithTitle:@"登陆成功" message:@"" delegate:nilcancelButtonTitle:nilotherButtonTitles:@"确定登陆",nil];

            [alter show];

            [alter release];

4.取用户名和空出一行Label

之前：

- (void)viewDidLoad

{

    [superviewDidLoad];

    self.tableView=[[UITableViewalloc]  initWithFrame:self.view.bounds];

    self.tableView.dataSource=self;

    self.tableView.delegate=self;

    [self.view addSubview:self.tableView];

｝

之后：

- (void)viewDidLoad

{

   // NSString *pwdText = _pwd.text;

    [superviewDidLoad];

    NSUserDefaults *user=[NSUserDefaultsstandardUserDefaults];

    NSString *name=[user objectForKey:@"UserName"];

//距离顶部有30的距离

    self.tableView=[[UITableViewalloc]  initWithFrame:CGRectMake(0,30,self.view.bounds.size.width,self.view.bounds.size.height-30)];

    self.tableView.dataSource=self;

    self.tableView.delegate=self;

    [self.view addSubview:self.tableView];

｝

5.取数据

之前显示一行：

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

    static NSString *cellIdentifier=@"cellIdentifier";

    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:cellIdentifier];

    if (cell==nil) {

        cell=[[[UITableViewCellalloc]initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:cellIdentifier]autorelease];

    }

    NSDictionary *dic=[self.listDataobjectAtIndex:indexPath.row];

    cell.textLabel.text=[dicobjectForKey:@"dept"];

    return cell;

}

之后显示二行：

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

    static NSString *cellIdentifier=@"cellIdentifier";

    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:cellIdentifier];

    if (cell==nil) {

        cell=[[[UITableViewCellalloc]initWithStyle:UITableViewCellStyleValue1reuseIdentifier:cellIdentifier]autorelease];

    }

    NSDictionary *dic=[self.listDataobjectAtIndex:indexPath.row];

    cell.textLabel.text=[dicobjectForKey:@"fd"];

    cell.detailTextLabel.text=[dicobjectForKey:@"ssj"];

    return cell;

}

-------------------------------------------------------------------------------------------------------------------------------------------

//- (void)login {

//    NSString *qqText = _qq.text;

//    NSString *pwdText = _pwd.text;

//    

//    NSLog(@"QQ=%@,密码=%@", qqText, pwdText);

//    [self.view endEditing:YES];// 如果第一响应者存在于self.view里面，就可以退出键盘

//    //传递参数

//    NSMutableArray *params=[NSMutableArray array];

//    //[params addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"pass",@"dm", nil]];

//    //[params addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"lfxpass2010",@"pwd", nil]];

//    //设置传递对象

//    ServiceArgs *args=[[[ServiceArgs alloc] init] autorelease];

//    

//    args.methodName=@"selectJjtz";

//    

//    args.soapParams=params;

//    

//    //调用

//    

//    [[ServiceHelper sharedInstance] asynService:args completed:^(NSString *xml, NSDictionary *userInfo) {

//        NSLog(@"xml=%@\n",xml);

//    } failed:^(NSError *error, NSDictionary *userInfo) {

//        NSLog(@"error=%@\n",[error description]);

//    }];

//}

觉得写得不错，帮忙打赏下，谢谢！