Passing Data from One Intent to Another Intent:

Here I used two Activity classes to pass data from one activity to another activity through Intents.

Main Activity.java :  which Intent send the data:

public class MainActivity extends Activity implements OnClickListener {

     EditText name, pwd;

                Button sub;

                @Override

                protected void onCreate(Bundle savedInstanceState) {

                                super.onCreate(savedInstanceState);

                                setContentView(R.layout.main);

                                name=(EditText)findViewById(R.id.NameText);

                                pwd=(EditText)findViewById(R.id.PassWordText);

                                sub=(Button)findViewById(R.id.button1);

                                sub.setOnClickListener(this);

                }

                @Override

                public void onClick(View v) {

                                String ename=name.getText().toString();

                                String epwd=pwd.getText().toString();

                                Intent intn=new Intent(MainActivity.this,SecondActivity.class);

// here putExtra(keyvalue,value); // here keyvalue is a key value to identify value from first intent in another intent. Value is value which you are passing to another intent.

                                intn.putExtra("Name",ename);

                                intn.putExtra( "PassW",epwd);

                                startActivity(intn);

                }       }

Second Activity.java: which receives that data and prints that data:

public class SecondActivity extends Activity implements OnClickListener{

                Button get,search;

                EditText nm,pw;

                String sname,spwd;

                @Override

                protected void onCreate(Bundle savedInstanceState) {

                                super.onCreate(savedInstanceState);

                                setContentView(R.layout.second);

                                get=(Button)findViewById(R.id.button);

                                nm=(EditText)findViewById(R.id.editName);

                                pw=(EditText)findViewById(R.id.editPassWord);

                                search=(Button)findViewById(R.id.Searchbutton);

                                search.setOnClickListener(this);

                                get.setOnClickListener(this);

//Bundle is using to get the intent extra fileds from passing intent.

                                Bundle b=getIntent().getExtras();

                                sname=b.getString("Name");

                                spwd=b.getString("PassW");

                }

                @Override

                public void onClick(View v) {

                                // TODO Auto-generated method stub

                                if(v==get){

                                nm.setText(sname);

                                pw.setText(spwd);

                                }

                                else if(v==search){

                                                Intent intn=new Intent(Intent.ACTION_VIEW);

                                                intn.setData(Uri.parse("http://www.google.com"));

                                                startActivity(intn);

                }              }               }