Change Viewfinder Resolution in qt C++

[Praveen k]

It is pointing to this error:-

 mCamera->setViewfinderSettings(viewfindersettings);

Giving me Segmentation fault. And the value in (this) is 0x0 of type camera*

[SGaist]

Do you mean that mCamera is a null pointer ?

[Praveen k]

No. I have initialized.

[SGaist]

Can you post an image of the stack trace ?

See the guide here for posting picture as the upload is currently broken.

[Praveen k]

This post is deleted!

[Praveen k]

https://drive.google.com/open?id=0B27_ICxFo-UcaE9icWx3UTBZcmM

[p3c0]

@Praveen-k Use some other site where login is not required.
https://postimage.org
http://tinypic.com

[Praveen k]

I tried as @SGaist guided for posting pictures on forum. But unfortunately itz not posting. So here you can get it
https://postimg.org/image/x3po0e1lf

[SGaist]

The camera object itself seems to be null. Are you sure it's initialized correctly ?

[Praveen k]

Ok. if i have not initialized it, can you help me on how to initialize it?
I have done the initialization as below:

    mCamera = new QCamera(this);
    mCameraViewFinder = new QCameraViewfinder(this);
    mCameraImageCapture = new QCameraImageCapture(mCamera,this);
    mCamera->start();

[SGaist]

It's not your mCamera object that is null, it's your camera object.

[Praveen k]

How can i initialize it? Plz help me

[SGaist]

It's your own custom class, how can I know where you use it or how you use it ?

[Praveen k]

Sorry.. I got it. Thanks for the solution man. Silly mistake from my side..
But after initializing new camera is starting. Wat if, i want the previous one

[SGaist]

Then don't create a new QCamera each time you change the resolution.