在控制器的.h文件中
#import <UIKit/UIKit.h>
#import "FirstView.h"
@interface FirstViewController : UIViewController<UIWebViewDelegate> {
UIWebView *web;
UIActivityIndicatorView *activityIndicatorView;
UIView *opaqueView;
}
@property (nonatomic, strong) FirstView *fv;
@end
在.m中，如下：
#import "FirstViewController.h"
@interface FirstViewController ()
@end
@implementation FirstViewController
- (void)loadView {
[super loadView];
self.fv = [[FirstView alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.view = self.fv;
}
- (void)viewWillAppear:(BOOL)animated {
self.tabBarController.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:0.890 green:0.471 blue:0.118 alpha:1.000];
self.tabBarController.navigationController.title = @"空中奪寶";
}
- (void)viewDidLoad {
[super viewDidLoad];
web = [[UIWebView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 40)];
[web setUserInteractionEnabled:YES];//是否支持交互
web.delegate=self;
[web setOpaque:NO]; //opaque是不透明的意思
[web setScalesPageToFit:YES];//自動縮放以適應屏幕
[self.view addSubview:web];
NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
[web loadRequest:[NSURLRequest requestWithURL:url]];
//2.加載本地文件資源
/* NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webView loadRequest:request];*/
//3.讀入一個HTML，直接寫入一個HTML代碼
//NSString *htmlPath = [[[NSBundle mainBundle]bundlePath]stringByAppendingString:@"webapp/loadar.html"];
//NSString *htmlString = [NSString stringWithContentsOfURL:htmlPath encoding:NSUTF8StringEncoding error:NULL];
//[webView loadHTMLString:htmlString baseURL:[NSURL fileURLWithPath:htmlPath]];
opaqueView = [[UIView alloc]initWithFrame:[UIScreen mainScreen].bounds];
activityIndicatorView = [[UIActivityIndicatorView alloc]initWithFrame:[UIScreen mainScreen].bounds];
[activityIndicatorView setCenter:opaqueView.center];
[activityIndicatorView setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleWhite];
[opaqueView setBackgroundColor:[UIColor blackColor]];
[opaqueView setAlpha:0.6];
[self.view addSubview:opaqueView];
[opaqueView addSubview:activityIndicatorView];
// Do any additional setup after loading the view.
}
-(void)webViewDidStartLoad:(UIWebView *)webView{
[activityIndicatorView startAnimating];
opaqueView.hidden = NO;
}
-(void)webViewDidFinishLoad:(UIWebView *)webView{
[activityIndicatorView startAnimating];
opaqueView.hidden = YES;
}
//UIWebView如何判斷 HTTP 404 等錯誤
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
if ((([httpResponse statusCode]/100) == 2)) {
// self.earthquakeData = [NSMutableData data];
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
[ web loadRequest:[ NSURLRequest requestWithURL: url]];
web.delegate = self;
} else {
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:
NSLocalizedString(@"HTTP Error",
@"Error message displayed when receving a connection error.")
forKey:NSLocalizedDescriptionKey];
NSError *error = [NSError errorWithDomain:@"HTTP" code:[httpResponse statusCode] userInfo:userInfo];
if ([error code] == 404) {
// NSLog(@"xx");
web.hidden = YES;
}
}
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
運行吧，是不是成功了！~~