Third - Displayactivity.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.hupandroid1.DisplayActivity" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginTop="29dp"

        android:text="Total Salary" />

    <EditText

        android:id="@+id/totalsalary"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/textView1"

        android:layout_below="@+id/textView1"

        android:layout_marginTop="35dp"

        android:ems="10" >

        <requestFocus />

    </EditText>

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/editText1"

        android:layout_below="@+id/editText1"

        android:layout_marginTop="48dp"

        android:text="Back" />

</RelativeLayout>

Second - Salary Activity.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.hupandroid1.SalaryActivity" >

    <EditText

        android:id="@+id/bp"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/textView1"

        android:layout_alignParentRight="true"

        android:layout_below="@+id/textView1" >

        <requestFocus />

    </EditText>

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignBottom="@+id/editText2"

        android:layout_alignParentLeft="true"

        android:text="DA" />

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/textView2"

        android:layout_alignParentTop="true"

        android:text="Basic Pay" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/bp"

        android:layout_alignParentBottom="true"

        android:onClick="calc"

        android:text="Calculate" />

    <EditText

        android:id="@+id/da"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignBaseline="@+id/button1"

        android:layout_alignBottom="@+id/button1"

        android:layout_alignRight="@+id/bp"

        android:layout_marginLeft="22dp"

        android:layout_toRightOf="@+id/button1" />

</RelativeLayout>

First - Main Activity Layout.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.hupandroid1.MainActivity" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginTop="17dp"

        android:text="User Name" />

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignRight="@+id/textView1"

        android:layout_below="@+id/textView1"

        android:layout_marginTop="93dp"

        android:text="Password" />

    <EditText

        android:id="@+id/editText1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/textView1"

        android:layout_below="@+id/textView1"

        android:layout_marginTop="23dp"

        android:ems="10" >

        <requestFocus />

    </EditText>

    <EditText

        android:id="@+id/editText2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/textView2"

        android:layout_below="@+id/textView2"

        android:layout_marginTop="22dp"

        android:ems="10" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/editText2"

        android:layout_below="@+id/editText2"

        android:layout_marginTop="56dp"

        android:text="Login"

        android:onClick="login" />

</RelativeLayout>

Third - Display Activity

 package com.example.hupandroid1;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.EditText;

import android.widget.Toast;

public class DisplayActivity extends Activity {

EditText edtotal;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_display);

Intent in=getIntent();

String total=in.getStringExtra("total");

edtotal=(EditText)findViewById(R.id.totalsalary);

edtotal.setText(total);

Toast.makeText(this, ""+total, Toast.LENGTH_LONG).show();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

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

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

}

Second - Salary Activity

 package com.example.hupandroid1;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

public class SalaryActivity extends Activity {

EditText bp,da;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_salary);

}

public void calc(View v)

{

bp=(EditText)findViewById(R.id.bp);

da=(EditText)findViewById(R.id.da);

int bpay=Integer.parseInt(bp.getText().toString());

int daval=Integer.parseInt(da.getText().toString());

int total=bpay+daval;

String stotal=""+total;

Toast.makeText(this, ""+total, Toast.LENGTH_SHORT).show();

Intent in=new Intent(SalaryActivity.this,DisplayActivity.class);

in.putExtra("total", stotal);

startActivity(in);

 

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

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

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

}

First - Main Activity

 package com.example.hupandroid1;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

EditText username,password;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void login(View v)

{

username=(EditText)findViewById(R.id.editText1);

password=(EditText)findViewById(R.id.editText2);

String uname=username.getText().toString();

String pass=password.getText().toString();

if(uname.equals("admin") && pass.equals("123"))

{

//Toast.makeText(this, "Success", Toast.LENGTH_SHORT).show();

Intent in=new Intent(MainActivity.this,SalaryActivity.class);

startActivity(in);

}

else

{

Toast.makeText(this, "Invalid User", Toast.LENGTH_SHORT).show();

}

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

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

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

}

Passing values between activities

 How to connect activity using login information and pass information between activities using eclipse;

Dear all,

Here there are three activities

1. First - Main Activity - Show login information

2. Second - Salary Activity - Read Basic pay and DA and calculate total and pass to Display activity

3. Third - Display Activity - Take the data from previous activity using getIntent() and display the value in a new Text box