如何在當前視圖控制器視圖上添加UIview？

我在我試圖做一些條形碼讀取processes.when我在主頁上按下一個按鈕，我提出的條形碼讀取viewcontrollers一個iPad應用程序中查看像this`如何在當前視圖控制器視圖上添加UIview？

ZBarReaderViewController *reader = [ZBarReaderViewController new]; 
    reader.readerDelegate = self; 

    reader.supportedOrientationsMask = ZBarOrientationMaskAll; 

    reader.sourceType=UIImagePickerControllerSourceTypeCamera; 
    //reader.cameraDevice = UIImagePickerControllerCameraDeviceFront; 

    reader.cameraOverlayView=cameraOverlay; 

    if([UIImagePickerController isCameraDeviceAvailable:       UIImagePickerControllerCameraDeviceFront ]) 
    { 
      reader.cameraDevice = UIImagePickerControllerCameraDeviceFront; 
    } 
    ZBarImageScanner *scanner = reader.scanner; 

    reader.wantsFullScreenLayout = YES; 
    // TODO: (optional) additional reader configuration here 

    // EXAMPLE: disable rarely used I2/5 to improve performance 

    [scanner setSymbology: ZBAR_I25 
        config: ZBAR_CFG_ENABLE 
         to: 0]; 
    reader.showsZBarControls = NO; 
    // present and release the controller 
    [self presentModalViewController:reader animated:YES]; 
    //[appdel.navigationController pushViewController:reader animated:YES]; 

    //[reader.view addSubview:collect]; 
    [reader.view addSubview:back]; 
     [back addTarget:self action:@selector(backpressed:) forControlEvents:UIControlEventTouchUpInside]; 
    [reader.view addSubview:scan]; 
    [scan addTarget:self action:@selector(getpressed:) forControlEvents:UIControlEventTouchUpInside]; 

    [reader release];

當我我按下掃描按鈕添加到閱讀器視圖我需要添加另一個視圖。因爲我在做-(IBAction)getpressed:(id)sender{[self.view addSubview:newview] }。但它不被添加到視圖。任何人都可以幫助我實現這一點？ `

來源

2012-07-02 hacker

試着用'[self.view addSubView：newView.view]'？ – Phillip

您是否檢查了getpressed方法被調用？誰是新視點？ – giorashc

是[self.view addSubView：newView.view]它沒有試過 – hacker

你需要覆蓋到您的zbar和看法，並添加按鈕疊加觀點：

//set the frame according to your requirement 
aOverlay = [[UIView alloc] initWithFrame:CGRectMake(0.0,0.0,320.0,480.0)]; 
aOverlay.backgroundColor = [UIColor clearColor]; 
UIButton *aBtnscan = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
[aBtnscan setFrame:CGRectMake(115, 435, 80, 45)]; 

[aBtnscan addTarget:self action:@selector(getpressed:)forControlEvents:UIControlEventTouchUpInside]; 
[aOverlay addSubview:aBtnscan]; 
reader.cameraOverlayView = aOverlay; 
// You code

來源

2012-07-02 09:19:24 Bhupesh

爲什麼 - （ve）?????? – Bhupesh

如何在當前視圖控制器視圖上添加UIview？

回答

相關問題