ITEEDU

iPhone书架加载本地书籍视图设计和实现

- (void)viewDidLoad
{
    [super viewDidLoad];
    UIView *bnView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 20)];
    
     backBn = [[UIButton alloc] initWithFrame:CGRectMake(0,0,40,20)];
    [backBn setTitle:@"返回" forState:UIControlStateNormal];
    //[backBn setBackgroundImage:[UIImage imageNamed:@"backBn.png"] forState:UITouchPhaseBegan];
    //[backBn setBackgroundImage:[UIImage imageNamed:@"backBn.png"] forState:UITouchPhaseEnded];
    [backBn addTarget:self action:@selector(btn:) forControlEvents:UITouchPhaseEnded];

    [bnView setBackgroundColor:[ UIColor  brownColor]];
    [bnView addSubview:backBn];
    [self.view addSubview:bnView];
        
    webView  = [[ UIWebView   alloc]  initWithFrame: CGRectMake(0,20,320,460)];
    [webView  setUserInteractionEnabled: YES];  //是否支持交互
    [webView  setDelegate: self ];  //委托
    [webView  setOpaque: NO ];  //透明
    [self.view  addSubview : webView];  //加载到自己的view
            
    NSString *page; 
    NSURL *url;
    switch (index) {
        case 0:
            page= [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"iphone/baobaoweiyang"];
            break;
        case 1:
            page= [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"iphone/richangbaojian"];
            break;
        case 2:
            page= [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"iphone/xinlingjiehuo"];
            break;
        case 3:
            page= [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"iphone/zhunbaba"];
            break;
        case 4:
            page= [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"iphone/zhunmama"];
            break;
        default:
            break;
    }
        
    //NSLog(@"%@",page);
	url = [[NSURL alloc] initFileURLWithPath:page];  
    //NSLog(@"%@",url);
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];
    //webview 加行加载
	[webView loadRequest: request];
    [request release];
        
    opaqueview = [[ UIView   alloc]  initWithFrame: CGRectMake(0,0,320,460)];        
    //opaqueview 需要在.h文件中进行声明用以做UIActivityIndicatorView的容器view；
    activityIndicator  = [[UIActivityIndicatorView   alloc]initWithFrame: CGRectMake(0,0,320,480)];//需要在.h文件中进行声明
    [activityIndicator  setCenter: opaqueview.center ];
    [activityIndicator  setActivityIndicatorViewStyle: UIActivityIndicatorViewStyleWhite];  //颜色根据不同的界面自己调整
    [opaqueview  setBackgroundColor:[ UIColor  blackColor]];
    [opaqueview  setAlpha: 0.6 ];
    [self.view  addSubview: opaqueview];
    [opaqueview  addSubview : activityIndicator];
          
    // Do any additional setup after loading the view from its nib.
}
- (void )webViewDidFinishLoad:(UIWebView *)webView {
   
    [activityIndicator stopAnimating];
    opaqueview.hidden  = YES ;
    
}

- (void )webViewDidStartLoad:(UIWebView *)webView {     
    
    [activityIndicator startAnimating ]; 
    opaqueview.hidden  = NO ;
    
}
- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

/*********************************************************************************
 函数: - (BOOL)shouldAutorotateToInterfaceOrientation:
 功能: 支持屏幕自动转向，此处代码自动生成
 参数: (UIInterfaceOrientation)interfaceOrientation
 返回值:布尔型的状态值
 **********************************************************************************/ 
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

-(void)dealloc
{
    [super dealloc];
    [webView release];
    [backBn release];
    [opaqueview release];
    [activityIndicator release];
    
}
@end