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Why does camera preview stretch to full screen?
So that is why the preview will stretch to full screen. What needs to be done is to set camera preview layout width and height to match the chosen camera size ratio, so the preview keeps its aspect ratio and won’t distort. I tried to use the CameraPreview class to do all the calculations and layout changes, but I couldn’t figure it out.
Why does my Lenovo laptop have a white screen?
When you start up a laptop from Lenovo, Dell, Acer, etc, you may find there is an appearance of a white screen and the laptop can’t boot to the login screen, which is annoying since you couldn’t use the laptop properly. The laptop white screen problem may be caused by a faulty graphics card, non-working display, malware/viruses, etc.
How to make the camera preview fit on the screen?
Now you just need to set LayoutParams of your camera preview layout. Change the width, height and center it in parent. There are two choices how to calculate the preview dimensions. Either you want it to fit the screen with black bars (if windowBackground is set to null) on the sides or top/bottom.
How to get the camera height and width?
Then get height and width of parameters that you set in: your set ratio is equal to height/width. If you want camera to look good on your screen then height/width ratio of parameters that you set to camera must be the same as height (minus status bar)/width ratio of your screen.
What happens when I shut down the camera preview?
If the new status is ExclusiveControlAvailable, then you can try starting the camera preview again. When you are done using the preview stream, you should always shut down the stream and properly dispose of the associated resources to ensure that the camera is available to other apps on the device.
Is there a way to hide the camera preview?
Good practice for Camera Activity is to hide StatusBar. Applications like Instagram are doing it. It reduces your screen height value and change your ratio value. It is possible to get strange Preview Sizes on some devices (your SurfaceView will be cut a little)