create a UIWebView and load a website programmatically - iphone

Question

The following is my code. I simply want to load a website page and put a back button on screen. Don't know why nothing shows on the screen.
in .h
#import <UIKit/UIKit.h>
#interface ThirdViewController : UIViewController
{
UIWebView *myWebView;
}
#property (nonatomic, retain) UIWebView *myWebView;
-(IBAction)goBack:(id)sender;
#end
in .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:)];
}

Answer 1

Initialize your webView.
UIWebView *tempWebview = [[UIWebView alloc]initWithFrame:theFrame];
NSString *urlAddress = #"http://www.apple.com";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
self.myWebView = tempWebview;
[tempWebview loadRequest:requestObj];
[tempWebview release];
myWebView.delegate=self;

Answer 2

First Initialize Web view .Write The Below Code In Between [Super
ViewDidLoad]; and Nsstring Inisilization.
myWebView=[[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
myWebView.delegate=self;
[self.view addSubview:myWebView]
Then Load Request Your Code Will Work.

Answer 3

Add the below code into your viewcontroller.m file viewDidLoad method.
UIWebView *webView = [[UIWebView alloc]init];
NSString *urlString = #"http://www.sourcefreeze.com";
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
[webView loadRequest:urlRequest];
[self.view addSubview:webView];
for complete uiwebview example please refer the below link.
https://sourcefreeze.com/ios-webview-uiwebview-example/