How to add overlay on the Camera using ZBAR in Android - java

I need help, I am using ZBAR for bar code scanning for the Android App. I want to add a overlay on the camera view so that I can display some information and get user input using button

You can do that with the help of SurfaceView For More Info U Can Check This Click

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How can I open a user's camera and have it open, but NOT to take a photo on Android Studio

I want to open the camera but not in photo form so I can add an overlay. I just need the camera to display what is shows but not to take the photo if that makes sense... How can I do this?
maybe this article help you open camera view in your app by creating your own view and open camera in its own different thread ,
as it might take time to load and this will result in the lagging UI.
Maybe this article from android developers website will help you achieve what you want.
https://developer.android.com/training/camera/cameradirect#kotlin

Recycler view add image from gallery or camera with button

I am working on an app where I have to upload images to a recycler view from either the gallery or from camera. The recycler view should have a button where I can add the image from.
The image below shows what I am trying to achieve.
My question is, is there a library for android either java or kotlin that can help me achieve this?
Any help will be highly appreciated.
You can use UltimateRecyclerView library for your purpose
This library supports different layouts and many more other useful features. You can create different layouts for images and plus button and define different code logic by checking the position of the clicked item.

Android - send view to back

I am using this plugin within an Ionic app to view my device's camera and then stream over RTMP - https://github.com/disono/cordova-rtmp-rtsp-stream
This works great, but I need the Ionic webview to appear over the top of the camera so that I can show images & text on top of the camera view. Can someone tell me how to edit the plugin to place the camera view behind Ionic's webview please?
Unfortunately I do not know the Java language, but I believe the file that requires editing may be RTMPActivity.java
Thanks in advance for any help.

How to add a lean-back background that will appear when focused on the app's icon in Amazon Fire TV?

Here is the image of the leanback I want for my app's icon just like music app in the picture. I am trying to add a leanback background to my app so that when hovered on its icon it will have it in the background. Please provide me with a demo code. I tried to implement the https://github.com/googlesamples/androidtv-Leanback on the firetv but couldn't get any leanback while hovering on its icon.
You have to provide app icon and backdrop image while submitting the app to Amazon store. You can find it under multimedia and images section. Fire stick fetches app icon and background images when your app is downloaded.

Is it possible camera app without using preview layout?

I am developing an app which takes picture in background.
but it uses a preview layout which is attached to an activity.
actually i need it as plugin which do not show preview. and camera app i have developed using class which extends an activity.
i wonder how can it be possible to make it without using an activity or preview layout.
please help on this matter.
You can hide the preview layout.
layoutname.setVisibility(View.GONE);

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