Android Paper Study Final Notes

 

Create Binding  first step and asyn

//============================Gradle Side Code =========================================

//build.Grade file add code

buildFeatures{
    viewBinding true
}
//============================java Code Start =========================================

//class add Binding

ActivityLasklabcheckboxBinding Binding;

===================================================================================

//Binding Create Actitivity Page Name ,initail xlm and set view 

//Method Code

Binding =
        ActivityLasklabcheckboxBinding.
                inflate(getLayoutInflater());
View view = Binding.getRoot();
setContentView(view);

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Toast show data in Spinner select item

//============================java Code Start =========================================

Toast.makeText(SpinnerActivity.this,

                        "Selected Province :"+

                                spinnerBinding.spinnerProvinces.

                                        getSelectedItem().toString(),             

Toast.LENGTH_LONG).show();

================================End===============================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Populate data database show listview with Method

//============================java Code Start =========================================

private void populateListView(){
     ArrayList<String> data = objMgr.getAllPerson();
    ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
            android.R.layout.simple_list_item_1, data);
    Binding.listViewShow.setAdapter(adapter);
}

================================end===============================================

Spinner setOnItemSelectedListener

//=================================================================================

Binding.spinnerFloor.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
{
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        String msgShow = "";
        String item = Binding.spinnerFloor.getItemAtPosition(position).toString();
        Toast.makeText(LASKLABCHECKBOX.this, "hello" + item, Toast.LENGTH_SHORT).show();
        if (item == "Ground Floor") {
            Binding.txtViewSelect.setText("");
            if (Binding.chkBoxFacultyOff.isChecked()) {
                msgShow += "B1";
                Binding.txtViewSelect.setText(msgShow + "");
                Toast.makeText(LASKLABCHECKBOX.this, "hello" + item, Toast.LENGTH_SHORT).show();
            }
            if(Binding.chkBoxLaboratories.isChecked()){
                msgShow +="B3";
                Binding.txtViewSelect.setText(msgShow+"");
            }
            if(Binding.chkBoxLectureThreater.isChecked()){
                msgShow +="B2";
                Binding.txtViewSelect.setText(msgShow+"");
            }
        }
    }

 @Override
    public void onNothingSelected(AdapterView<?> parent)
    {
        // can leave this empty
    }

});

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Custom Adapter

//============================java Code Start =========================================

//create class level

ArrayList<Customer> data;

//create adapter custom

data = new ArrayList<Customer>();
customerAdapter adapter = new customerAdapter(data, this);

//only use frament not xml layoutmanager

binding.recyclerViewCustomer.setLayoutManager(new LinearLayoutManager(this));

//show xml
binding.recyclerViewCustomer.setAdapter(adapter);

// diffrent way of call Adapter

data.clear();

//get data api 
data.addAll(response.body());
binding.recyclerViewCustomer.getAdapter().notifyDataSetChanged();

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

ArrayAdapter

The Adapter acts as a bridge between the UI Component and the Data Source. It converts data from the data sources into view items that can be displayed into the UI Component. Data Source can be Arrays, HashMap, Database, etc.

//============================java Code Start =========================================

//example

public ArrayAdapter(Context context, int resource, int textViewResourceId, T[] objects)// DataPut

//create drowpdownlist

ArrayAdapter arrayAdapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_item, floor);

//calling  ArrayAdapter

Binding.spinnerFloor.setAdapter(arrayAdapter);

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Create References and Get Reference by id

//============================java Code Start =========================================

// EditText References
EditText txtmath;
    EditText txtenglish;
    EditText txturdu;
    EditText txtcomputer;
    EditText txtscience;
    EditText txtresult;
    Button btnCalPercentage;
    Button btnCalGrade;
    Button btnClear;

=================================================================

              // Object initialed
        txtmath= findViewById(R.id.txt_Math);
        txtenglish= findViewById(R.id.txt_English);
        txturdu= findViewById(R.id.txt_Urdu);
        txtcomputer= findViewById(R.id.txt_computer);
        txtscience= findViewById(R.id.txt_Science);
        txtresult= findViewById(R.id.txt_ResultGrade);
        btnCalPercentage=findViewById(R.id.btn_calPercentage);
        btnCalGrade=findViewById(R.id.btn_calGrade);
        btnClear=findViewById(R.id.btn_clear);

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Move new Page

//============================java Code Start =========================================

// Redirect to another intent , new page move
            Intent i=new Intent(MainActivity.this,MainActivity2.class);

// start Activity
            startActivity(i);

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Save data in Bundle

//============================java Code Start =========================================

// Redirect to another intent and share Data
Intent i=new Intent(MainActivity.this,MainActivity2.class);
            Bundle bund= new Bundle();
            bund.putString("user_data","My name");
            i.putExtras(bund);
            startActivity(i);

 

//get show data

Intent intent = getIntent();

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

String array is an array of objects. This is because each element is a String and you know that in Java, String is an object.

//============================java Code Start =========================================

//String Create and initiate

String colors[] = {"Red","Blue","White","Yellow","Black", "Green","Purple","Orange","Grey"}

===================================================================================

//Different String Create Array

ArrayList<String> floor= new ArrayList<String>();
floor.add("Ground Floor");
floor.add("First Floor");

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

image conververt to byte

//============================java Code Start =========================================

//get imageview then convert into bitmapdrawable

BitmapDrawable bmpDrawble = (BitmapDrawable)
        binding.imgView.getDrawable();

//convert into bitmap from bitmapdrable
Bitmap bmpImage = bmpDrawble.getBitmap();
ByteArrayOutputStream outputStream =
        new ByteArrayOutputStream();
bmpImage.compress(Bitmap.CompressFormat.PNG,
        100,outputStream);
byte[] imgeArr = outputStream.toByteArray();

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Alter Dialog Create and show

//============================java Code Start =========================================

// AlertDialog builder (correntpage Names)

AlertDialog.Builder builde =new AlertDialog.Builder(SirZahidLabtaskimageview.this);
builde.setTitle("Select option");
String [] choice= new String[]{"capture by Cemera","Gallery "};

//builder (array, click listener create)
builde.setItems(choice, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {

//list first item select in i
        if(i==0){

//open gallery code
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT,
                    MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            startActivityForResult(intent, GALLERY_REQUEST_CODE);
        }
        else {

//open camera code
            Intent intent = new Intent(
                    MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, CAMERA_REQUEST_CODE);
        }

  }
});

//builde show
builde.show();

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

onActivityResult after calling Camera or GALLERY

//============================java Code Start =========================================

private static final int CAMERA_REQUEST_CODE = 1001;

protected void onActivityResult(int requestCode,
                                int resultCode,
                                @Nullable Intent data) {

//camera user

    if(requestCode == CAMERA_REQUEST_CODE){
        if(resultCode == RESULT_OK){
            Bundle bundleObj = data.getExtras();
            Bitmap bmpImage = (Bitmap) bundleObj.get("data");
            binding.imgView.setImageBitmap(bmpImage);

                             //save database convert byte
            BitmapDrawable bmpDrawble = (BitmapDrawable)
                    binding.imgView.getDrawable();
           // Bitmap bmpImage = bmpDrawble.getBitmap();
            ByteArrayOutputStream outputStream =
                    new ByteArrayOutputStream();
            bmpImage.compress(Bitmap.CompressFormat.PNG,
                    100,outputStream);
            byte[] imgeArr = outputStream.toByteArray();
            //byte to bitmap

        }
    }//gallery use code

else if(requestCode == GALLERY_REQUEST_CODE){
        if(resultCode == RESULT_OK){
            Uri imgeUri = data.getData();
            binding.imgView.setImageURI(imgeUri);
        }
    }
    super.onActivityResult(requestCode, resultCode, data);
}

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Initialize value into ArrayList Intent

//============================java Code Start =========================================

ArrayList<String> imageList = new ArrayList<>();
            Intent intent = new Intent(this, NextActivity.class);
            intent.putStringArrayListExtra("IMAGE_LIST", imageList);
            startActivity(intent);
//Receive data using intent.getStringArrayListExtra()...
            ArrayList<String> imageList = new ArrayList<>();
            Intent intent = getIntent();
            imageList = intent.getStringArrayListExtra("IMAGE_LIST");

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Bundle send data array of object and get data ArrayList<object>

//============================java Code Start =========================================

//save in bundle

ArrayList<Object> object = new ArrayList<Object>();
Intent intent = new Intent(Current.class, Transfer.class);
Bundle args = new Bundle();
args.putSerializable("ARRAYLIST",object);
intent.putExtra("BUNDLE",args);
startActivity(intent);
In the Transfer.class
//get data
Intent intent = getIntent();
Bundle args = intent.getBundleExtra("BUNDLE");
ArrayList<Object> object = (ArrayList<Object>) args.getSerializable("ARRAYLIST");

//==================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

alterdialog Custom

//============================java Code Start =========================================

 //start alterDialog
// final   View c= getLayoutInflater().inflate(R.layout.admin_home_venue_cell,null);
   venueBinding = AdminHomeVenueCellBinding.inflate(getLayoutInflater());
 AlertDialog.Builder builde =new AlertDialog.Builder(getActivity());
  builde.setView(venueBinding.getRoot());
  builde.show();

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Dialog Box Custom

//============================java Code Start =========================================

Dialog dialog = new Dialog(getActivity());
dialog.setContentView(venueBinding.getRoot());
dialog.show();

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Connecting imageView and Picasso will happen in onBindViewHolder of CityAdapter so put this line of code at the end of the method.

//============================java Code Start =========================================

Picasso.get().load(city.getImageURL()).into(holder.image);

===============================End=================================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Bottom  sheet show

//============================java Code Start =========================================

View dialogView = getLayoutInflater().inflate(R.layout.bottomsheet_dialog_teacher, null);
BottomSheetDialog dialog = new BottomSheetDialog(getContext(),R.style.BottomSheetStyle);
dialog.setContentView(dialogView);
dialog.show();

====================================End===========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Custom Toast Show

//============================java Code Start =========================================

====================================End=================================================

Random number call

//============================java Code Start =========================================

// int random = new Random().nextInt(61) + 20; // [0, 60] + 20 => [20, //80]
 Random r = new Random();
 int randomNumber = r.nextInt(5)+10;
 binding.txtClassShow.setText(String.valueOf(randomNumber));

===================================================================================

Random number call save unique number

//============================java Code Start =========================================

 Random r = new Random();
ArrayList<Integer> arrayList   =new ArrayList<Integer>();
 while (true){
     for (int i = 0; arrayList.size()!=10; i++) {
         int randomNumber = r.nextInt(11) + 10;
         if (!arrayList.contains(randomNumber)) {
             arrayList.add(randomNumber);
         }
     }
     break;
 }
 binding.txtClassShow.setText(arrayList.indexOf(12)+"");
// arrayList.remove(arrayList.indexOf(12));
 ArrayAdapter<Integer> adapter = new ArrayAdapter<Integer>(getApplicationContext(),
         android.R.layout.simple_list_item_1, arrayList);
 binding.listViewShow.setAdapter(adapter);

===================================================================================

Save SharedPreferences

//============================java Code Start =========================================

SharedPreferences ref  = getApplicationContext().
        getSharedPreferences("store", Context.MODE_PRIVATE);
SharedPreferences.Editor edit= ref.edit();
edit.putString("name",binding.editTxtName.getText().toString());
edit.putString("email",binding.editTxtEmail.getText().toString());
edit.commit();

//array of list save

ArrayList<Customer> clist= new ArrayList<>();
Customer c= new Customer();
c.id=2;
c.name="ali";
c.address="ISB";
clist.add(c);
Gson g= new Gson();
String s =g.toJson(clist);
edit.putString("customer",s);
edit.commit();

===================================================================================

Show SharedPreferences

//============================java Code Start =========================================

SharedPreferences  ref = getApplicationContext().
        getSharedPreferences("store", Context.MODE_PRIVATE);

String name=  ref.getString("name","name not fount");
String email=  ref.getString("email","email not fount");
binding.editTxtName.setText(name);
binding.editTxtEmail.setText(email);

//  array of list get data json

String s= ref.getString("customer",null);

//single object
Customer u = null;

ArrayList<Customer> list = null;
if(s!=null){
    Gson g= new Gson();

//single object get
  //   u=  g.fromJson(s,  Customer.class);
    list= g.fromJson(s,new TypeToken <ArrayList<Customer>>(){}.getType() );

binding.editTxtName.setText(list.get(0).name+"");                    
binding.editTxtEmail.setText(list.get(0).id+"");

================================================end============================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Dependencies add in bulid.gradle file

//============================java Code Start =========================================

implementation 'com.squareup.retrofit2:retrofit:2.7.2'
implementation 'com.squareup.retrofit2:converter-gson:2.7.2'
implementation 'com.squareup.okhttp3:okhttp:3.6.0'

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Api Class Create in Android use Retrofit

//============================java Code Start =========================================

import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class RetrofitClient {
    private static RetrofitClient instance = null;
    private Api myApi;

    private RetrofitClient() {
        Retrofit retrofit = new Retrofit.Builder().baseUrl(Api.BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        myApi = retrofit.create(Api.class);
    }

    public static synchronized RetrofitClient getInstance() {
        if(instance== null){
            instance = new RetrofitClient();
        }
        return instance;
    }
    public Api getMyApi(){
        return myApi;
    }
}
=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Create API InterFace and Api fuction in android

//============================java Code Start =========================================

public interface Api {
    public static String
            BASE_URL="http://192.168.136.33/FYPApi/api/";
    public static String
            IMAGE_BASE_URL="http://192.168.136.33/FYPApi/";

    @POST("Customer/SaveCustomer")
    public Call<String> saveCustomer(@Body Customer c);

    @GET("math/getuser")
    public Call<User> getUser();

    @GET("math/getusers")
    public Call<List<User>> getUsers();

    @GET("math/divide")
    public Call<Integer> divide(@Query("n1") int n1, @Query("n2") int n2);

    @GET("Customer/getallcustomers")
    public Call<ArrayList<Customer>> getAllCustomers();

    @GET("Customer/getAllProfiles")
    public Call<ArrayList<UserProfileInfo>> getAllProfile();

    @Multipart
    @POST("Customer/uploadImage")
    public Call<String> saveUserProfile
            (
                    @Part ArrayList<MultipartBody.Part> images,
                    @Part("id") RequestBody id,
                    @Part("lname") RequestBody lname,
                    @Part("fname") RequestBody fname,
                    @Part("address") RequestBody address,
                    @Part("gender") RequestBody g
            );
    @NonNull
    public default MultipartBody.Part prepareFilePart(String partName, Uri fileUri, Context context) throws IOException {
        File file = FileUtil.from(context, fileUri);
        RequestBody requestFile =
                RequestBody.create(
                        MediaType.parse(context.getContentResolver().getType(fileUri)),
                        file
                );
        return MultipartBody.Part.createFormData(partName,
                file.getName(),
                requestFile);
    }
    public default RequestBody createPartFromString(String descriptionString){
        RequestBody description =
                RequestBody.create(
                        okhttp3.MultipartBody.FORM, descriptionString);
        return  description;
    }
}
=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Image and other data send sql

//============================java Code Start =========================================

int id = Integer.parseInt
        (binding.editTextId.
                getText().toString());
String fname = binding.editTextFname.getText().toString();
String lname = binding.editTextLname.getText().toString();
String address = binding.editTextAddress.getText().toString();
String gender = "Male";
if(binding.radioButtonFemaleProfile.isChecked())
    gender = "Female";

//retrofit object create
RetrofitClient client =
        RetrofitClient.getInstance();

//create api object
Api api = client.getMyApi();

//multi image send
ArrayList<MultipartBody.Part> imageList = new ArrayList<>();
try {

//image  send body object create
    MultipartBody.Part image = api.prepareFilePart("imge", imgeUri, UserProfileActivity.this);

//add image
    imageList.add(image);
} catch (IOException e) {
    e.printStackTrace();
}

//api function call
api.saveUserProfile(imageList,
                api.createPartFromString(id+""),
                api.createPartFromString(fname),
                api.createPartFromString(lname),
                api.createPartFromString(address),
                api.createPartFromString(gender))
        .enqueue(new Callback<String>() {
            @Override
            public void onResponse(Call<String> call, Response<String> response) {
                if(response.isSuccessful()){
                    Toast.makeText(getApplicationContext(),
                            response.body(),
                            Toast.LENGTH_SHORT).show();
                }
            }
            @Override
            public void onFailure(Call<String> call, Throwable t) {

            }
        });
=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

@GET("math/getusers")
public Call<List<User>> getUsers(); //array get function call

//============================java Code Start =========================================

RetrofitClient client = RetrofitClient.getInstance();
Api api = client.getMyApi();
api.getUsers().enqueue(new Callback<List<User>>() {
    @Override
    public void onResponse(Call<List<User>> call,
                           Response<List<User>>
                                   response) {
        if(response.code()==200){
            List<User> users =  response.body();
            String data = "";
            for(User u : users){
                data+="Name : "+u.Name +
                        "\nEmail : "+u.Email+"\n";
            }
            binding.editTextData.setText(data);
        }

=========================================End==========================================

//--------------------------------Code Detail and Working---------------------------------------------------------

Drawer create

//======================java Code Start =========================================

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <group
        android:checkableBehavior="single">
    <item
        android:id="@+id/action_fav"
        android:title="Favourites" />
    <item
        android:id="@+id/action_history"
        android:title="History" />
    </group>
</menu>

2 step String add

//============================java Code Start =========================================

<string name="navigation_drawer_open">open drawer</string>
<string name="navigation_drawer_close">close drawer</string>

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Drawer Navigation calling navigation bar show in theme changing

//============================java Code Start =========================================

//show navigation bar

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

//create Toggle
ActionBarDrawerToggle   toggle = new ActionBarDrawerToggle(this,
        binding.drawerLayout,//use spicific navigation bar
        binding.drawerToolbar,//use spicific navigation bar
        R.string.drawer_opened,
        R.string.drawer_closed);

//show toogle
toggle.setDrawerIndicatorEnabled(true);
toggle.syncState();

//header changing
View headerView = binding.drawerNavigation.getHeaderView(0);
DrawerHeaderBinding dbinding  = DrawerHeaderBinding.bind(headerView);
dbinding.textViewEmail.setText("Hello");

//Drawer clich function
binding.drawerNavigation.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
    @Override
    public boolean onNavigationItemSelected(@NonNull
                                                    MenuItem item) {
        if(item.getItemId() == R.id.action_fav){
            loadFragment(new FavouriteFragment());

        }else if(item.getItemId() == R.id.action_history){
            loadFragment(new HistoryFragment());
        }
        binding.drawerLayout.
                closeDrawer(GravityCompat.START);
        return true;
    }
});

//--------------------------------------------Code Detail and Working---------------------------------------------------------

to open and close the navigation drawer when the icon is clicked

//============================java Code Start =========================================

    @Override
public boolean onOptionsItemSelected(
        @NonNull MenuItem item) {
    toggle.onOptionsItemSelected(item);
    return super.onOptionsItemSelected(item);
}

//--------------------------------------------Code Detail and Working---------------------------------------------------------

calling Fragment function

//============================java Code Start =========================================

private  void loadFragment(Fragment f){
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    ft.replace(R.id.drawer_container, f);
    ft.commit();
}

//===============================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Three Dot Navigation create theme not icon navigation change Theme

//============================java Code Start =========================================

setSupportActionBar(binding.drawerToolbar);
binding.drawerToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
    @Override
    public boolean onMenuItemClick(MenuItem item) {
        if(item.getItemId() == R.id.action_add){
            Toast.makeText(getApplicationContext(), "clicked add", Toast.LENGTH_SHORT).show();
        }
        return false;
    }
});

===================Three Dot Show XML==============================

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(
            R.menu.menu_draawer_activity,
            menu);

    return super.onCreateOptionsMenu(menu);
}

//--------------------------------------------Code Detail and Working---------------------------------------------------------

 Fragment Java Binding

//============================java Code Start =========================================

FragmentHome2Binding Binding;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        Binding = FragmentHome2Binding.inflate(inflater, container, false);
        Binding.ActionTxt.setText("Pakistan");
        return Binding.getRoot();

    }

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Recycler View Adapter create

//============================java Code Start =========================================

public class AdminViewDVRAdapter extends RecyclerView.Adapter<AdminViewDVRAdapter.AdminViewDVRViewHolder>{
    private  Fragment fragment;
    private ArrayList<DVR> DVRList;
    private Context context;

    public AdminViewDVRAdapter(ArrayList<DVR> DVRList, Context context) {
        this.DVRList = DVRList;
        this.context = context;
    }
    public AdminViewDVRAdapter(ArrayList<DVR> DVRList, Context context, Fragment fragment ) {
        this.DVRList = DVRList;
        this.context = context;
        this.fragment=fragment;
    }
    @NonNull
    @Override
    public AdminViewDVRViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        AdminViewDvrCellBinding b  =AdminViewDvrCellBinding.
                inflate(LayoutInflater
                                .from(parent.getContext()),
                        parent, false);

        AdminViewDVRViewHolder vh = new AdminViewDVRViewHolder(b);
        return vh;
    }
    @Override
    public void onBindViewHolder(@NonNull AdminViewDVRViewHolder holder, int position) {
        DVR obj = DVRList.get(position);
        holder.binding.textViewViewDvrName.setText(obj.getNAME()+"");
        holder.binding.textViewViewDvrHost.setText(obj.getHOST()+"");
        holder.binding.textViewViewDvrIp.setText(obj.getIP()+"");
        //show image
        String imageUri = Api.IMAGE_BASE_URL
                + "Files/"+obj.pic;
        Picasso.with(context).load(imageUri).
                into(holder.binding.imageViewUserProfile);
        //click call function
        holder.binding.adminViewDVRSelected.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                AdminViewTabDVRFragment AdminViewTabDVR = (AdminViewTabDVRFragment) fragment;
                AdminViewTabDVR.recyclerviewAdminViewTabDVRCellClick(obj,context);
            }
        });

    }
    @Override
    public int getItemCount() {
        return DVRList.size();
    }
    class AdminViewDVRViewHolder extends RecyclerView.ViewHolder {
        AdminViewDvrCellBinding binding;//<----
        public AdminViewDVRViewHolder(
                @NonNull AdminViewDvrCellBinding itemView) {
            super(itemView.getRoot());
            binding = itemView;//<----
        }
    }
}
=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Calling Custom Adapter

//============================java Code Start =========================================

ArrayList<DVR> data = new ArrayList<DVR>();
AdminViewDVRAdapter adapter = new
        AdminViewDVRAdapter (data, getActivity() , AdminViewTabDVRFragment.this);
LinearLayoutManager manager = new LinearLayoutManager(getActivity());
Binding.RecycerviewAdminViewDVR.setLayoutManager(manager);
Binding.RecycerviewAdminViewDVR.
        setAdapter(adapter);

=========================================End==========================================

//----------------------------------Code Detail and Working---------------------------------------------------------

Tab Craete PagerAdapter

//============java Code Start =========================================

public class CustomPagerAdapter extends FragmentStateAdapter {
    public CustomPagerAdapter(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle) {
        super(fragmentManager, lifecycle);
    }
    @NonNull
    @Override
    public Fragment createFragment(int position) {
        if(position == 0){
            return new HomeFragment();
        }else if (position == 1){
            return new ProfileFragment();
        }else{
            return new SettingFragment();
        }
    }
    @Override
    public int getItemCount() {
        return 3;
    }
}

//----------------------------------Code Detail and Working---------------------------------------------------------

Tab Craete and calling Page Adapter

//============java Code Start =========================================

binding.tabLayout.addTab(binding.tabLayout.newTab().setText("Home"));
binding.tabLayout.addTab(binding.tabLayout.newTab().setText("Profile"));
binding.tabLayout.addTab(binding.tabLayout.newTab().setText("Setting"));
//Page Calling create
CustomPagerAdapter adapter = new CustomPagerAdapter(getSupportFragmentManager(),
        getLifecycle()
        );
binding.viewpagerContainer.setAdapter(adapter);
//Tab Button click
binding.tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        binding.viewpagerContainer.
                setCurrentItem(tab.getPosition());
    }
    @Override
    public void onTabUnselected(TabLayout.Tab tab) {
    }
    @Override
    public void onTabReselected(TabLayout.Tab tab) {
    }
});
//Tab Change Page Call
binding.viewpagerContainer.
        registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
            @Override
            public void onPageSelected(int position) {
                super.onPageSelected(position);
                binding.tabLayout.selectTab(
                        binding.tabLayout.getTabAt(position)
                );
            }
        });

//============java End =========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Bottom Navigation

//============================java Code Start =========================================

   binding.bottomNav.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
       @Override
       public boolean onNavigationItemSelected(@NonNull MenuItem item) {
           switch (item.getItemId()){
               case R.id.Home:
                   loadFragment(new HomeFragment());
                   break;

               default:
                   loadFragment(new SettingFragment());
                   break;
           }
           return true;
       }
   });

private void loadFragment(Fragment f){
    FragmentTransaction  ft =
            getSupportFragmentManager().beginTransaction();
    ft.replace(R.id.frament_container, f);
    ft.commit();
}

//======================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Create Database in Android SQLite

//============================java Code Start =========================================

public class DBManager extends SQLiteOpenHelper {
    public DBManager(@Nullable Context context) {
        super(context, "demo.db", null, 1);
    }
    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table if not " +
                "exists user(userid integer primary key, username text," +
                "password text,role text)");
    }
    @Override
    public void onUpgrade(SQLiteDatabase db, int i, int i1) {
    }

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Database Change SQLite

//============================java Code Start =========================================

public void onUpgrade(SQLiteDatabase db, int i, int i1) {
  db.execSQL("create table if not exists " +
          "profile(id integer, name text, gender text," +
          "address text, image blob)");
}
=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Save Database Data in Android

//============================java Code Start =========================================

public void saveUser(int id,String uname,String password, String role){
    ContentValues values = new ContentValues();
    values.put("userid",id);
    values.put("username",uname);
    values.put("password",password);
    values.put("role",role);

    SQLiteDatabase db = getWritableDatabase();
    db.insertOrThrow("user",null,values);

}

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Update Database Data in Android

//============================java Code Start =========================================

public void userUpdate(int id,String uname,String password, String role){
    ContentValues values = new ContentValues();
    values.put("userid",id);
    values.put("username",uname);
    values.put("password",password);
    values.put("role",role);
    SQLiteDatabase db = getWritableDatabase();
    db.update("user",values,"userid=?",new String[]{id+""});

}
=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Delete Database Data in Android

//============================java Code Start =========================================

public void deletePerson(int pid){
    SQLiteDatabase db = getWritableDatabase();
    db.delete("user","userid=?",new String[]{pid+""});
}

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Show data Database in Android

//============================java Code Start =========================================

public ArrayList<String> getAllPerson(){
    ArrayList<String> personList = new ArrayList<>();
    SQLiteDatabase db = getReadableDatabase();

    Cursor cursorRef = db.rawQuery("Select * from user",
            null);
    cursorRef.moveToFirst();
    while(cursorRef.isAfterLast() == false){
        int id = cursorRef.getInt(0);
        String user = cursorRef.getString(1);
        String pass = cursorRef.getString(2);
        String role = cursorRef.getString(3);
        String row = "Id : "+id+ ", NameUser : "+user+", Pass : "+pass+", Role "+role;
        personList.add(row);
        cursorRef.moveToNext();
    }
    cursorRef.close();
    return personList;
}

=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Store Image and data calling DB function

//============================java Code Start =========================================

binding.buttonSave.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        int id = Integer.parseInt
                (binding.editTextId.
                        getText().toString());
        String name = binding.editTextName.getText().toString();
        String address = binding.editTextAddress.getText().toString();
        String gender = "Male";
        if(binding.radioButtonFemaleProfile.isChecked())
            gender = "Female";

//drawble create
        BitmapDrawable bmpDrawble = (BitmapDrawable)
                binding.imageViewProfile.getDrawable();

//drawble to bitmap change
        Bitmap bmpImage = bmpDrawble.getBitmap();

//create byte object
        ByteArrayOutputStream outputStream =
                new ByteArrayOutputStream();

//compress file Stream
        bmpImage.compress(Bitmap.CompressFormat.PNG,
                100,outputStream);

//save byte
        byte[] imgeArr = outputStream.toByteArray();
        Profile p = new Profile(id,
                name,
                gender,
                address, imgeArr);

//DB object create
        DBManager objMgr =new DBManager(ProfileActivity.this);
        objMgr.saveProfile(p);
        Toast.makeText(ProfileActivity.this,
                "Data Saved", Toast.LENGTH_LONG)
                .show();


    }
});=========================================End==========================================

//--------------------------------------------Code Detail and Working---------------------------------------------------------

Show data Database with image in Android

//============================java Code Start =========================================

DBManager mgr = new DBManager(this);
ArrayList<Profile> profiles = mgr.getAllProfiles();
if(profiles.size()>0){

//one object get
    Profile p = profiles.get(0);
    Bitmap bmpImage =BitmapFactory.decodeByteArray(p.image, 0,
                    p.image.length);
    binding.imageViewProfile.setImageBitmap(bmpImage);

=========================================End==========================================