IOS二维码拍照相机自定义界面实例

IOS二维码拍照相机自定义界面实例

这个简单的实例实在ZBarReaderViewController的view层上再加一层用于定义自己的界面
- (void)QRscan
{
    ZBarReaderViewController *reader = [ZBarReaderViewController new];
    reader.readerDelegate = self;
//非全屏
    reader.wantsFullScreenLayout = NO;
    //隐藏底部控制按钮
    reader.showsZBarControls = NO;
//设置自己定义的界面
    [self setOverlayPickerView:reader];
    ZBarImageScanner *scanner = reader.scanner;
   [scanner setSymbology: ZBAR_I25
                   config: ZBAR_CFG_ENABLE
                       to: 0];
    [self presentModalViewController: reader
                            animated: YES];
    [reader release];
}
- (void)setOverlayPickerView:(ZBarReaderViewController *)reader
{
//清除原有控件
    for (UIView *temp in [reader.view subviews]) {
        for (UIButton *button in [temp subviews]) {
            if ([button isKindOfClass:[UIButton class］) {
                [button removeFromSuperview];
            }
        }
        for (UIToolbar *toolbar in [temp subviews]) {
            if ([toolbar isKindOfClass:[UIToolbar class］) {
                [toolbar setHidden:YES];
                [toolbar removeFromSuperview];
            }
        }
    }
    //画中间的基准线
    UIView* line = ［UIView alloc] initWithFrame:CGRectMake(40, 220, 240, 1)];
    line.backgroundColor = [UIColor redColor];
    [reader.view addSubview:line];
    [line release];
//最上部view
    UIView* upView = ［UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 80)];
    upView.alpha = 0.3;
    upView.backgroundColor = [UIColor blackColor];
    [reader.view addSubview:upView];
    //用于说明的label
    UILabel * labIntroudction= ［UILabel alloc] init];
    labIntroudction.backgroundColor = [UIColor clearColor];
    labIntroudction.frame=CGRectMake(15, 20, 290, 50);
    labIntroudction.numberOfLines=2;
    labIntroudction.textColor=[UIColor whiteColor];
    labIntroudction.text=@"将二维码图像置于矩形方框内，离手机摄像头10CM左右，系统会自动识别。";
    [upView addSubview:labIntroudction];
    [labIntroudction release];
    [upView release];
//左侧的view
    UIView *leftView = ［UIView alloc] initWithFrame:CGRectMake(0, 80, 20, 280)];
    leftView.alpha = 0.3;
    leftView.backgroundColor = [UIColor blackColor];
    [reader.view addSubview:leftView];
    [leftView release];
//右侧的view
    UIView *rightView = ［UIView alloc] initWithFrame:CGRectMake(300, 80, 20, 280)];
    rightView.alpha = 0.3;
    rightView.backgroundColor = [UIColor blackColor];
    [reader.view addSubview:rightView];
    [rightView release];
    //底部view
    UIView * downView = ［UIView alloc] initWithFrame:CGRectMake(0, 360, 320, 120)];
    downView.alpha = 0.3;
    downView.backgroundColor = [UIColor blackColor];
    [reader.view addSubview:downView];
    [downView release];
    //用于取消操作的button
    UIButton *cancelButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    cancelButton.alpha = 0.4;
    [cancelButton setFrame:CGRectMake(20, 390, 280, 40)];
    [cancelButton setTitle:@"取消" forState:UIControlStateNormal];
    [cancelButton.titleLabel setFont:[UIFont boldSystemFontOfSize:20］;
    [cancelButton addTarget:self action:@selector(dismissOverlayView:)forControlEvents:UIControlEventTouchUpInside];
    [reader.view addSubview:cancelButton];
}
//取消button方法
- (void)dismissOverlayView:(id)sender{
    [self dismissModalViewControllerAnimated: YES];
}

转载： http://blog.csdn.net/linux_zkf