Android - Camera 2 API - won't take picture

Question

i have a problem with Camera 2 API in Android. I'm using native android with Android Studio. The camera is okay on TextureView but when i'm trying to take a pict. It doesn't work. I followed teh Kotlin Basic Example in the official github page of Camera 2 API. I saw the Logcat when i opened the Camera Activity :

2018-11-14 09:37:59.963 4009-4009/sayurbox.com.oms E/libc: Access denied finding property "persist.camera.privapp.list"
2018-11-14 09:37:59.965 4009-4958/sayurbox.com.oms E/libc: Access denied finding property "camera.hal1.packagelist"
2018-11-14 09:38:00.166 4009-5002/sayurbox.com.oms E/libc: Access denied finding property "persist.camera.legacy_perf"
2018-11-14 09:38:01.971 4009-4957/sayurbox.com.oms E/RequestQueue: cancel failed: no repeating request exists.

Answer 1

I don't know about the exact scenario of yours but in most cases, this happens if not running in the right thread. For example, just running mediaRecorder.start() will cause a similar error but putting media recorder to run on UI thread solves this issue.

runOnUiThread(
        new Runnable() {
        @Override
        public void run() {
            mediaRecorder.start();
        }
});

But as I said this is once scenario, and there could be other scenarios also for the issue.

Hopefully it will help someone.