Fetch SQL data into table layout in Android Studio - sql-server

Question

I just started programming using android. Currently, I want to set table layout in activity_main.xml like the picture below and retrieve/display data from SQL server database into it.
I have tried the following things.
I created some subclasses that interprets table in real database like ScanAdapter.java, ScanResultModel.java and I created also new layout scanresult.xml to provide identity of TextView in table row.
Set and design activity_main.xml
The problem is I don't know how to created the code to retrieve data from SQL database server. I did not find the solution.
Here is the activity_main.xml code
<?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">
<EditText
android:id="#+id/txtlabel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:hint="Scan Label No"
android:minHeight="48dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.089" />
<EditText
android:id="#+id/txtqty"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:hint="Enter Qty"
android:inputType="number"
android:minHeight="48dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.168" />
<EditText
android:id="#+id/txtrmrks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:hint="Enter Remarks"
android:inputType="textAutoCorrect"
android:minHeight="48dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.244" />
<TextView
android:id="#+id/txtconnect"
android:layout_width="255dp"
android:layout_height="19dp"
android:text="con"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.41"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.99" />
<TextView
android:id="#+id/txtTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Scan Barcode Label"
android:textSize="24sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.464"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.009" />
<Button
android:id="#+id/btn_scan"
android:layout_width="89dp"
android:layout_height="48dp"
android:text="Scan"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.027"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.948" />
<Button
android:id="#+id/btn_save"
android:layout_width="89dp"
android:layout_height="48dp"
android:text="Save"
app:backgroundTint="#8CD635"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.326"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.948" />
<Button
android:id="#+id/btn_load"
android:layout_width="89dp"
android:layout_height="48dp"
android:onClick="Loaddgv"
android:text="Load"
app:backgroundTint="#8CD635"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.627"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.948" />
<Button
android:id="#+id/btn_clear"
android:layout_width="89dp"
android:layout_height="48dp"
android:onClick="clearScan"
android:text="Clear"
app:backgroundTint="#8CD635"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.93"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.948" />
<TableLayout
android:layout_width="395dp"
android:layout_height="358dp"
android:layout_margin="8dp"
android:stretchColumns="1,2,3,4"
tools:context=".MainActivity"
tools:layout_editor_absoluteX="9dp"
tools:layout_editor_absoluteY="255dp"
android:background="#E8EEF3">
<TableRow
android:layout_height="1px"
android:background="#BDBDBD">
<TextView
android:layout_column="1"
android:gravity="center"
android:padding="10dp"
android:text="LabelNo"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:gravity="center"
android:padding="10dp"
android:text="Qty"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:gravity="center"
android:padding="10dp"
android:text="Remarks"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:gravity="center"
android:padding="10dp"
android:text="ScanDate"
android:textSize="16dp"
android:textStyle="bold" />
</TableRow>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</TableLayout>
</androidx.constraintlayout.widget.ConstraintLayout >
MainActivity.java
package com.nid.shikakarikensa;
import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
public class MainActivity extends AppCompatActivity {
Connection connect;
String ConnectionResult;
private Button btnScan, btnSave, btnLoad, btnClear;
private TextView tstatus,tconnect, tusrid,msg;
private EditText trmrks, tqty, tlblno;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnScan = findViewById(R.id.btn_scan);
btnSave = findViewById(R.id.btn_save);
btnLoad = findViewById(R.id.btn_load);
btnClear = findViewById(R.id.btn_clear);
tstatus = findViewById(R.id.txtstatus);
tqty = findViewById(R.id.txtqty);
trmrks = findViewById(R.id.txtrmrks);
tusrid = findViewById(R.id.txtuserid);
tlblno = findViewById(R.id.txtlabel);
tconnect = findViewById(R.id.txtconnect);
tlblno.requestFocus();
tlblno.setEnabled(false);
btnScan.setOnClickListener(s ->
{
if (ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
Manifest.permission.CAMERA)) {
startScan();
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]
{Manifest.permission.CAMERA}, 0);
}
} else {
startScan();
}
});
btnSave.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String lblno = tlblno.getText().toString();
String qty = tqty.getText().toString();
if (lblno.isEmpty() || qty.isEmpty()){
Toast.makeText(MainActivity.this, "Please check your details data!", Toast.LENGTH_SHORT).show();
return;
}
SaveDataToDB(v);
tlblno.getText().clear();
tqty.getText().clear();
trmrks.getText().clear();
}
});
}
public void clearScan(View v)
{
tlblno.getText().clear();
tqty.getText().clear();
trmrks.getText().clear();
MessageBox("Data Cleared");
}
public void MessageBox(String message)
{
Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
}
private void startScan()
{
Intent intent = new Intent(getApplicationContext(), ScannerActivity.class);
startActivityForResult(intent, 20);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 20) {
if (resultCode == RESULT_OK && data!=null) {
String code = data.getStringExtra("result");
tlblno.setText(code);
}
}
}
#Override
public void onRequestPermissionsResult (int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults)
{
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 0) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
startScan();
} else {
Toast.makeText(this,"Failed to open camera!", Toast.LENGTH_LONG).show();
}
}
}
#SuppressLint("SetTextI18n")
public void SaveDataToDB(View v)
{
String lblno = tlblno.getText().toString();
String rmrks = trmrks.getText().toString();
String usrid = tusrid.getText().toString();
String value = tqty.getText().toString();
int qty=Integer.parseInt(value);
try {
ConnectionHelper connectionHelper = new ConnectionHelper();
connect = connectionHelper.connectionclass();
if (connect!=null) {
String query = "exec dbo.i_shikakarikensa '"+lblno+"', '"+qty+"', '"+rmrks+"','"+usrid+"' ";
Statement statement = connect.createStatement();
ResultSet result = statement.executeQuery(query);
Toast.makeText(MainActivity.this,"Data inserted",Toast.LENGTH_LONG).show();
} else {
ConnectionResult = "Database connection error";
}
}
catch (Exception ex)
{
Log.e("Set Error", ex.getMessage());
}
}
}
ScanAdapter.java
package com.nid.shikakarikensa;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class ScanAdapter extends RecyclerView.Adapter<ScanAdapter.ViewHolder> {
Context context;
List<ScanResultModel> scanresult_list;
public ScanAdapter(Context context, List<ScanResultModel> scanresult_list) {
this.context = context;
this.scanresult_list = scanresult_list;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.dgvscanrslt, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
if (scanresult_list != null && scanresult_list.size() > 0 ){
ScanResultModel model = scanresult_list.get(position);
holder.gvlabel.setText(model.getLabelNo());
holder.gvqty.setText(model.getQty());
holder.gvrmrks.setText(model.getRmrks());
holder.gvscandt.setText(model.getInsTs());
} else {
return;
}
}
#Override
public int getItemCount() {
return scanresult_list.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView gvlabel,gvqty,gvrmrks,gvscandt;
public ViewHolder(#NonNull View itemView) {
super(itemView);
gvlabel = itemView.findViewById(R.id.gvlabel);
gvqty = itemView.findViewById(R.id.gvqty);
gvrmrks = itemView.findViewById(R.id.gvrmrks);
gvscandt = itemView.findViewById(R.id.gvscandt);
}
}
}
ScanResultModel.java
package com.nid.shikakarikensa;
public class ScanResultModel {
String LabelNo, Qty, Rmrks, InsTs;
public ScanResultModel(String labelNo, String qty, String rmrks, String insTs) {
LabelNo = labelNo;
Qty = qty;
Rmrks = rmrks;
InsTs = insTs;
}
public String getLabelNo() {
return LabelNo;
}
public String getQty() {
return Qty;
}
public String getRmrks() {
return Rmrks;
}
public String getInsTs() {
return InsTs;
}
}
scanresult.xml
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numColumns="1"
android:orientation="vertical"
android:padding="5dp">
<TableRow>
<TextView
android:id="#+id/gvlabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7F00FF"
android:textSize="17sp" />
<TextView
android:id="#+id/gvqty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7F00FF"
android:textSize="17sp" />
<TextView
android:id="#+id/gvrmrks"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7F00FF"
android:textSize="17sp" />
<TextView
android:id="#+id/gvscandt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#7F00FF"
android:textSize="17sp" />
</TableRow>
</TableLayout>