小编lav*_*ien的帖子

以下是我的代码.我只是想加载一个网页并在屏幕上放一个后退按钮.不知道为什么屏幕上没有显示任何内容.

在.h

#import <UIKit/UIKit.h>
@interface ThirdViewController : UIViewController
{
    UIWebView *myWebView;
}
@property (nonatomic, retain) UIWebView *myWebView;
-(IBAction)goBack:(id)sender;
@end

在.m

#import "ThirdViewController.h"
@implementation ThirdViewController
@synthesize myWebView;
-(IBAction)goBack:(id)sender
{
    [myWebView goBack];
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSString *urlAddress = @"http://www.apple.com";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [myWebView loadRequest:requestObj];
    [self.view addSubview:myWebView];

    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]     initWithTitle:@"Back"                                                                              style:UIBarButtonItemStylePlain                                                                         target:self action:@selector(goBack:)];
}

我正在学习在iOS中创建表格视图.我知道如何创建一个或多个部分的表,但我不知道如何在每个部分前面添加标题.

这是我的代码.

TableViewController.h

#import <UIKit/UIKit.h>
@interface TableViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>{
    NSMutableArray *tableDataSource;    
}
@end

TableViewController.m

#import "FourthViewController.h"
@implementation TableViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)dealloc{
    [super dealloc];
    [tableDataSource release];
}

- (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.
}

#pragma mark - View lifecycle

- (void)viewDidLoad{ …

编译器显示:

File "temp.py", line 56
    return result
SyntaxError: 'return' outside function

我哪里错了？

class Complex (object):
    def __init__(self, realPart, imagPart):
        self.realPart = realPart
        self.imagPart = imagPart            

    def __str__(self):
        if type(self.realPart) == int and type(self.imagPart) == int:
            if self.imagPart >=0:
                return '%d+%di'%(self.realPart, self.imagPart)
            elif self.imagPart <0:
                return '%d%di'%(self.realPart, self.imagPart)   
    else:
        if self.imagPart >=0:
                return '%f+%fi'%(self.realPart, self.imagPart)
            elif self.imagPart <0:
                return '%f%fi'%(self.realPart, self.imagPart)

        def __div__(self, other):
            r1 = self.realPart
            i1 = self.imagPart
            r2 = other.realPart
            i2 = other.imagPart
            resultR = float(float(r1*r2+i1*i2)/float(r2*r2+i2*i2))
            resultI = …

我按照一些教程并混合我糟糕的代码.现在我可以获得我当前的位置.当我点击一个按钮时,它会触发一个位于我当前位置的引脚.如果我点击引脚,该消息会显示当前的地址.

我有两个问题:

1. 为什么我无法获得更精确的地址？现在我收到国家,城市和地区的地址,但没有道路的名称.

2. 如何获取当前位置地址的"文本"？我想在其他地方的UILabel中显示地址,但不知道该怎么做.

非常感谢你!

这是.h

#import <UIKit/UIKit.h>
#import "MapKit/MapKit.h"
#import "CoreLocation/CoreLocation.h"

@interface UserLocationAddressViewController : UIViewController     <MKMapViewDelegate,MKReverseGeocoderDelegate>
{
    MKMapView *userLocationAddMapView;
    CLLocationManager *locationManager;
}

@property (nonatomic, retain) MKMapView *userLocationAddMapView;

-(IBAction)getUserLocationAddress:(id)sender;

@end

这是.m

#import "UserLocationAddressViewController.h"

@implementation UserLocationAddressViewController

@synthesize userLocationAddMapView;

-(IBAction)getUserLocationAddress:(id)sender
{
    MKReverseGeocoder *geoCoder = [[MKReverseGeocoder alloc] initWithCoordinate:locationManager.location.coordinate];
    geoCoder.delegate = self;
    [geoCoder start]; 
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

-(void)dealloc
{ …

我是Twitter Bootstrap的新手.我试图在我的页面中央放置一个Carousel灯箱.我编辑了css这样做.但是,我没有找到编辑"下一个"和"上一个"箭头位置的位置.

这是我的页面. http://www.nienyiho.com/portfolio

我尝试使用RVM安装Ruby 1.9.3.它似乎安装没有错误,但Ruby的版本仍然是1.8.7.

还有其他人遇到过这种情况吗？

AlexHo@server:~$ rvm install 1.9.3 
Already installed ruby-1.9.3-p125. 
To reinstall use:

rvm reinstall 1.9.3

AlexHo@server:~$ rvm reinstall 1.9.3 
Removing /Users/AlexHo/.rvm/src/ruby-1.9.3-p125... 
Removing /Users/AlexHo/.rvm/rubies/ruby-1.9.3-p125... 
Removing ruby-1.9.3-p125 aliases... 
Removing ruby-1.9.3-p125 wrappers... 
Removing ruby-1.9.3-p125 environments... 
Removing ruby-1.9.3-p125 binaries... 
Fetching yaml-0.1.4.tar.gz to /Users/AlexHo/.rvm/archives 
Extracting yaml-0.1.4.tar.gz to /Users/AlexHo/.rvm/src 
Configuring yaml in /Users/AlexHo/.rvm/src/yaml-0.1.4. 
Compiling yaml in /Users/AlexHo/.rvm/src/yaml-0.1.4. 
Installing yaml to /Users/AlexHo/.rvm/usr 
Installing Ruby from source to: /Users/AlexHo/.rvm/rubies/ruby-1.9.3-p125, this may take a while depending on your cpu(s)...

ruby-1.9.3-p125 - #fetching 
ruby-1.9.3-p125 - #extracting ruby-1.9.3-p125 to /Users/AlexHo/.rvm/src/ruby-1.9.3- …