set camera Preview Aspect ratio manually with current display metrics - kotlin

Question

I tried to develop camera preview UI with selected specific aspect ratios. But I couldn't get the correct resolution based on the selected ratio. I have 9:16(full screen), 16:9, 2.35:1 and 1:1 ratio options portrait mode. My XML like below:
<FrameLayout ..>
<RelativeLayout
android:id="#+id/cameraContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?actionBarSize">
<LinearLayout
android:id="#+id/cameraPreview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerVertical="true"/>
</RelativeLayout>
</FrameLayout>
I tried to change cameraContainer width and height change and then I expect to same changing to camera. But It could not happen. My kotlin code is below:
fun setRatio(selectedRatioId:Int){
when(selectedRatioId){
1->{
//9:16
cameraContainerParams.height = gettingDisplayMetrics.height
}
2->{
//16:9
cameraContainerParams.height = (gettingDisplayMetrics.width*9) /16
}
3->{
//1:1
cameraContainerParams.height = gettingDisplayMetrics.width
}
3->{
//2.35:1
cameraContainerParams.height = ((gettingDisplayMetrics.width) / 2.35).toInt()
}
}
cameraContainerParams.width = gettingDisplayMetrics.width
cameraContainer.layoutParams = cameraContainerParams
}
result is(p40 lite):
9:16 is output 1080x2090 but camera output 992x 1920
16:9 is output 1080x 607 (expected 1080 x 608)
1:1 is output 480 x 480 (I expect 1080 x 1080)
2.35:1 is output 1080 x 459( expected 1080 x 460)
how can I set the correct aspect value camera with the selection?