Java Part One :
package first.learn.datapassingtwo;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.google.gson.Gson;
import first.learn.datapassingtwo.Person.PersonModel;
public class MainActivity extends AppCompatActivity {
public static String SIMPLE_STRING = null;
public static int SIMPLE_INT = -0;
EditText etOne, etTwo ,etThree,
etFour, etSix,
etFive;
Button btnSimpleInt,
btnSimpleString;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
etOne = (EditText) findViewById(R.id.etOne);
etTwo = (EditText) findViewById(R.id.etTwo);
btnSimpleInt = (Button)findViewById(R.id.btnSimpleInt);
btnSimpleString = (Button)findViewById(R.id.btnSimpleString);
etThree = (EditText)findViewById(R.id.etThree);
etFour = (EditText)findViewById(R.id.etFour);
etSix= (EditText)findViewById(R.id.etSix);
etFive= (EditText)findViewById(R.id.etFive);
btnSimpleString.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String name = etOne.getText().toString();
if(TextUtils.isEmpty(name)){
etOne.setError("Empty");
return;
}
String age = etThree.getText().toString();
if(TextUtils.isEmpty(age)){
etThree.setError("Empty");
return;
}
String address = etFive.getText().toString();
if(TextUtils.isEmpty(age)){
etFive.setError("Empty");
return;
}
etOne.setError(null);
etThree.setError(null);
etFive.setError(null);
String mobileNumber = "No mobile Number";
mobileNumber = etSix.getText().toString();
if(TextUtils.isEmpty(mobileNumber)){
mobileNumber = "No mobile Number";
}
PersonModel personModel = new PersonModel();
personModel.setName(name);
personModel.setAge(age);
personModel.setAddress(address);
personModel.setMobileNumber(mobileNumber);
String stringToPass = new Gson().toJson(personModel);
System.out.println("Json String : "+ stringToPass);
Intent intent = new Intent(MainActivity.this, DataGettingActivity.class);
intent.putExtra("OneModelData", stringToPass);
startActivity(intent);
}
});
btnSimpleInt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String s = etTwo.getText().toString();
if(TextUtils.isEmpty(s)){
etTwo.setError("Empty");
return;
}
etTwo.setError(null);
String t = etFour.getText().toString();
int q = -0 ;
try {
q = Integer.parseInt(t);
} catch (NumberFormatException e) {
throw new RuntimeException(e);
}
int p = -0;
try {
p = Integer.parseInt(s);
} catch (NumberFormatException e) {
throw new RuntimeException(e);
}
if(p==-0||q==-0){
Toast.makeText(MainActivity.this, "Please Write Valid Number", Toast.LENGTH_SHORT).show();
return;
}
Intent intent = new Intent(MainActivity.this, DataGettingActivity.class);
Bundle bundle = new Bundle();
bundle.putInt("SimpleIntOne", p);
bundle.putInt("SimpleIntTwo", q);
intent.putExtras(bundle);
startActivity(intent);
}
});
}
}
xml Part One :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:layout_margin="16dp">
<EditText
android:hint="name....."
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/etOne"/>
<EditText
android:hint="age....."
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/etThree"/>
<EditText
android:hint="address....."
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/etFive"/>
<EditText
android:hint="MobileNumber.....(optional)"
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/etSix"/>
<Button
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btnSimpleString"
android:text="Passing Model Data"/>
<EditText
android:hint="Simple int ....."
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/etTwo"
android:inputType="number"/>
<EditText
android:hint="Simple int ....."
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/etFour"
android:inputType="number"/>
<Button
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btnSimpleInt"
android:text="Button Simple Static Integer"/>
</LinearLayout>
Java Part Two :
package first.learn.datapassingtwo;
import static first.learn.datapassingtwo.MainActivity.SIMPLE_INT;
import static first.learn.datapassingtwo.MainActivity.SIMPLE_STRING;
import androidx.appcompat.app.AppCompatActivity;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;
import com.google.gson.Gson;
import first.learn.datapassingtwo.Person.PersonModel;
public class DataGettingActivity extends AppCompatActivity {
TextView tvShow;
private String private_simple_string = null;
private int private_int = -0;
@SuppressLint("SetTextI18n")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_data_getting);
tvShow = (TextView) findViewById(R.id.tvShow);
if(getIntent()!=null){
if(getIntent().getStringExtra("SimpleString")!=null){
String s = getIntent().getStringExtra("SimpleString");
tvShow.setText(s);
}
}
if(getIntent()!=null){
if(getIntent().getIntExtra("SimpleInt", -0)!=-0){
int p = getIntent().getIntExtra("SimpleInt", -25);
tvShow.setText(""+p);
}
}
if(SIMPLE_STRING!=null){
tvShow.setText(SIMPLE_STRING);
private_simple_string = SIMPLE_STRING;
System.out.println("Taken STATIC String first : " + SIMPLE_STRING);
SIMPLE_STRING = null;
tvShow.setText(private_simple_string );
System.out.println("Taken Private String : " + private_simple_string);
System.out.println("Taken Static String : " + SIMPLE_STRING);
Toast.makeText(this, "Found : "+private_simple_string, Toast.LENGTH_SHORT).show();
}
if(SIMPLE_INT!=-0){
private_int = SIMPLE_INT ;
System.out.println("Static Int First : "+ SIMPLE_INT);
SIMPLE_INT = -0 ;
tvShow.setText(""+private_int);
System.out.println("Static Int Second : "+ SIMPLE_INT);
System.out.println(" private Int : "+ private_int);
}
if(getIntent()!=null){
if(getIntent().getExtras()!=null){
Bundle bundle = getIntent().getExtras();
if(bundle!=null) {
String a = bundle.getString("bundleStringOne");
String b = bundle.getString("bundleStringTwo");
System.out.println("a : "+ a +" b : "+ b );
tvShow.setText(a + " -- "+b );
}
}
}
if(getIntent()!=null){
if(getIntent().getExtras()!=null){
Bundle bundle = getIntent().getExtras();
if(bundle!=null) {
int a = bundle.getInt("SimpleIntOne");
int b = bundle.getInt("SimpleIntTwo");
System.out.println("a : "+ a +" b : "+ b );
tvShow.setText(a + " -- "+b );
}
}
}
if(getIntent()!=null){
if(getIntent().getStringExtra("OneModelData")!=null){
String foundString = getIntent().getStringExtra("OneModelData");
System.out.println("Json String get : "+ foundString);
PersonModel personModel = new Gson().fromJson(foundString, PersonModel.class );
String name = personModel.getName();
String age = personModel.getAge();
String address = personModel.getAddress();
String phoneNumber = personModel.getMobileNumber();
tvShow.setText(
"Name : "+name
+ "\n\n" +"Age: "+ age
+ "\n\n"+ "Address: "+ address
+ "\n\n"+"MobileNumber: "+ phoneNumber
);
}
}
}
}
xml Part Two :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".DataGettingActivity"
android:orientation="vertical"
android:layout_margin="16dp">
<TextView
android:hint="Data....."
android:textSize="30dp"
android:textColor="@color/purple_700"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvShow"
/>
</LinearLayout>
Java Part 3 :
package first.learn.datapassingtwo.Person;
public class PersonModel {
String name, age, address, mobileNumber;
public PersonModel() {
}
public PersonModel(String name, String age, String address, String mobileNumber) {
this.name = name;
this.age = age;
this.address = address;
this.mobileNumber = mobileNumber;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getMobileNumber() {
return mobileNumber;
}
public void setMobileNumber(String mobileNumber) {
this.mobileNumber = mobileNumber;
}
}
Java Part Four :
package first.learn.datapassingtwo.Person;
public class BusinessClass {
String customerName, customerAddress, phone, quantity, unitPrice, totalPrice;
public BusinessClass() {
}
public BusinessClass(String customerName, String customerAddress, String phone, String quantity, String unitPrice, String totalPrice) {
this.customerName = customerName;
this.customerAddress = customerAddress;
this.phone = phone;
this.quantity = quantity;
this.unitPrice = unitPrice;
this.totalPrice = totalPrice;
}
public String getCustomerName() {
return customerName;
}
public void setCustomerName(String customerName) {
this.customerName = customerName;
}
public String getCustomerAddress() {
return customerAddress;
}
public void setCustomerAddress(String customerAddress) {
this.customerAddress = customerAddress;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getQuantity() {
return quantity;
}
public void setQuantity(String quantity) {
this.quantity = quantity;
}
public String getUnitPrice() {
return unitPrice;
}
public void setUnitPrice(String unitPrice) {
this.unitPrice = unitPrice;
}
public String getTotalPrice() {
return totalPrice;
}
public void setTotalPrice(String totalPrice) {
this.totalPrice = totalPrice;
}
}
Dependecy :
implementation 'com.google.code.gson:gson:2.10.1'
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