In this video it shows the steps to create live streaming video from the phone’s camera on the Texture View widget of your Android App.

It uses the new CameraDevice.createCaptureSession(sessionConfiguration) API. The previous versions of this API are deprecated from API version 30 onwards.

I hope you like this video. For any questions, suggestions or appreciation please contact us at: https://programmerworld.co/contact/ or email at: programmerworld1990@gmail.com

Complete source code and other details:

package com.programmerworld.cameraapp;

import static android.Manifest.permission.CAMERA;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.content.pm.PackageManager;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.params.OutputConfiguration;
import android.hardware.camera2.params.SessionConfiguration;
import android.os.Bundle;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;

import java.util.Collections;

public class MainActivity extends AppCompatActivity {
    private TextureView textureView;
    private CameraCaptureSession myCameraCaptureSession;
    private String stringCameraID;
    private CameraManager cameraManager;
    private CameraDevice myCameraDevice;
    private CaptureRequest.Builder captureRequestBuilder;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ActivityCompat.requestPermissions(this,
                new String[]{CAMERA},
                PackageManager.PERMISSION_GRANTED);
        textureView = findViewById(R.id.textureView);
        cameraManager = (CameraManager) getSystemService(CAMERA_SERVICE);
        startCamera();
    }
    private CameraDevice.StateCallback stateCallback = new CameraDevice.StateCallback() {
        @Override
        public void onOpened(@NonNull CameraDevice cameraDevice) {
            myCameraDevice = cameraDevice;
        }
        @Override
        public void onDisconnected(@NonNull CameraDevice cameraDevice) {
            myCameraDevice.close();
        }
        @Override
        public void onError(@NonNull CameraDevice cameraDevice, int i) {
            myCameraDevice.close();
            myCameraDevice = null;
        }
    };

    private void startCamera() {
        try {
            stringCameraID = cameraManager.getCameraIdList()[1];

            if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                // TODO: Consider calling
                //    ActivityCompat#requestPermissions
                // here to request the missing permissions, and then overriding
                //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                //                                          int[] grantResults)
                // to handle the case where the user grants the permission. See the documentation
                // for ActivityCompat#requestPermissions for more details.
                return;
            }
            cameraManager.openCamera(stringCameraID, stateCallback, null);
        } catch (CameraAccessException e) {
            throw new RuntimeException(e);
        }
    }
    public void buttonStartCamera(View view){
        SurfaceTexture surfaceTexture = textureView.getSurfaceTexture();
        Surface surface = new Surface(surfaceTexture);
        try {
            captureRequestBuilder = myCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
            captureRequestBuilder.addTarget(surface);
            OutputConfiguration outputConfiguration = new OutputConfiguration(surface);

            SessionConfiguration sessionConfiguration = new SessionConfiguration(SessionConfiguration.SESSION_REGULAR,
                    Collections.singletonList(outputConfiguration),
                    getMainExecutor(),
                    new CameraCaptureSession.StateCallback() {
                        @Override
                        public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
                            myCameraCaptureSession = cameraCaptureSession;
                            captureRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE,
                                    CameraMetadata.CONTROL_MODE_AUTO);
                            try {
                                myCameraCaptureSession.setRepeatingRequest(captureRequestBuilder.build(), null, null);
                            } catch (CameraAccessException e) {
                                throw new RuntimeException(e);
                            }
                        }
                        @Override
                        public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
                            myCameraCaptureSession = null;
                        }
                    }
            );

            myCameraDevice.createCaptureSession(sessionConfiguration);

        } catch (CameraAccessException e) {
            throw new RuntimeException(e);
        }
    }

    public void buttonStopCamera(View view){
        try {
            myCameraCaptureSession.abortCaptures();
        } catch (CameraAccessException e) {
            throw new RuntimeException(e);
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-feature android:name="android.hardware.camera"/>

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.CameraApp"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextureView
        android:id="@+id/textureView"
        android:layout_width="316dp"
        android:layout_height="330dp"
        android:layout_marginStart="47dp"
        android:layout_marginTop="38dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="136dp"
        android:layout_marginTop="48dp"
        android:onClick="buttonStartCamera"
        android:text="Start Camera"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textureView" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="136dp"
        android:layout_marginTop="40dp"
        android:onClick="buttonStopCamera"
        android:text="Stop Camera"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/button" />
</androidx.constraintlayout.widget.ConstraintLayout>

Screenshots: