package com.example.torch ; import androidx.annotation.RequiresApi ; import androidx.appcompat.app.AppCompatActivity ; import androidx.constraintlayout.widget.ConstraintLayout ; import android.hardware.camera2.CameraAccessException ; import android.hardware.camera2.CameraManager ; import android.os.Build ; import android.os.Bundle ; import android.view.View ; public class MainActivity extends AppCompatActivity { ConstraintLayout layout; CameraManager cameraManager; String cameraId; Boolean state=false; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate (savedInstanceState); setContentView( R.layout .activity_main); layout=findViewById( R.id.cl ); ...