自定义ZBar扫码界面：告别默认，打造美观

- (IBAction) scanButtonTapped
{
    ZBarReaderViewController *reader = [ZBarReaderViewController new];
    reader.readerDelegate = self;
    reader.showsZBarControls = false;
    UIImage *hbImage=[UIImage imageNamed:@"changecao_ma_box.png"];
    UIImageView *hbImageview=[[UIImageView alloc] initWithImage:hbImage];
//添加一个背景图片
    CGRect hbImagerect=CGRectMake(0, 0, 320, 435);
    [hbImageview setFrame:hbImagerect];
    [reader.readerView addSubview:hbImageview];
    [hbImageview release];
//添加一个工具栏
    UIImage *FootImage=[UIImage imageNamed:@"footer_bg_h.png"];
    UIImageView *footimageview=[[UIImageView alloc] initWithImage:FootImage];
    CGRect footimagerect=CGRectMake(0, 435, 320, 48);
    [footimageview setFrame:footimagerect];
    [reader.readerView addSubview:footimageview];
    [footimageview release];
//在工具栏上面添加一个按钮
    UIButton *cancleBtn=[UIButton buttonWithType:UIButtonTypeCustom];
    UIImage *image=[UIImage imageNamed:@"back_btn_bg.png"];
    [cancleBtn setImage:image forState:UIControlStateNormal];
    cancleBtn.frame=CGRectMake(271, 435, 46, 46);
//设置按钮的点击事件
    [cancleBtn addTarget:self action:@selector(ClickCancle) forControlEvents:UIControlEventTouchUpInside];
    [reader.readerView addSubview:cancleBtn];
    reader.supportedOrientationsMask = ZBarOrientationMaskAll;
    ZBarImageScanner *scanner = reader.scanner;
    [scanner setSymbology: ZBAR_I25 config: ZBAR_CFG_ENABLE to: 0];