Half white screen when rotate to landscape ionic 4 IOS

@sujanqode wrote:

I am building an IONIC 4 app in portrait mode. I have forced the app to stay in portrait mode in config.ts file and everything works fine in both android and IOS

On some pages, I am using camera-preview plugin to customize the camera screen. It needed to be in landscape mode so used Screen Orientation plugin to force it landscape on that page and start the camera.

ngOnInit() {
    this.platform.ready().then(()=>{
      if(this.platform.is('cordova')){
        this.screenOrientation.lock(this.screenOrientation.ORIENTATIONS.LANDSCAPE);
        this.cameraPreview.onBackButton().then(()=>{
          console.log('Back button pushed');
          this.close();
        })
        // this.presentAlertConfirm()
        //make short delay of 500ms to start the camera preview
        setTimeout(()=>{
          this.initCameraPreview()
        },500)
      }
    })
  }

Works fine in android.

But in IOS, half of the screen is covered in white as in the image below.

1587562373202944×2016 80.6 KB

Please help me out to resolve this issue

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