Thursday, 17 January 2013

Bundle in Android (passing data between activity's using bundle class)

ScreenShots:

In MainActivity enter details and send them to Second Activity


 In Second Activity display values that are received from MainActivity

activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter name"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText
        android:id="@+id/namedit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName" >

        <requestFocus />
    </EditText>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter phone number"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText
        android:id="@+id/phedit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="number" />

    <Button
        android:id="@+id/sendbutton1"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="20dp"
        android:text="Send"
        android:textSize="20sp" />

</LinearLayout>

second.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView2phnumber"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>

MainActivity.java:
package com.ram.bundledemo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
EditText nameEdit,phnumberEdit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Setup UI
nameEdit = (EditText)findViewById(R.id.namedit);
phnumberEdit = (EditText)findViewById(R.id.phedit);
Button sendBtn = (Button)findViewById(R.id.sendbutton1);
sendBtn.setOnClickListener(new OnClickListener() {
//Listner for button
@Override
public void onClick(View arg0) {
  //Getting data from EditText
String name = nameEdit.getText().toString();
String phnumber = phnumberEdit.getText().toString();
if(name.length()==0&&phnumber.length()==0){
Toast.makeText(getApplicationContext(), "plz enter all details", Toast.LENGTH_SHORT).show();

}else{
//Converting phnumber to long type
long phno = Long.parseLong(phnumber);
//Creating Bundle object
Bundle b = new Bundle();
//Storing data into bundle 
b.putString("myname", name);
b.putLong("phnum", phno);
//Creating Intent object
Intent in = new Intent(getApplicationContext(), Second.class);
//Storing bundle object into intent 
in.putExtras(b);
startActivity(in);
}
}
});
}

}

Second.java:
package com.ram.bundledemo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class Second extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
TextView nameText = (TextView)findViewById(R.id.textView1name);
TextView phText = (TextView)findViewById(R.id.textView2phnumber);
// getIntent():Return the intent that started this activity. 
Intent in = getIntent();
//Getting bundle
Bundle b = in.getExtras();
//Getting data from bundle
String name = b.getString("myname");
long phnumber = b.getLong("phnum");
//Converting long type to String 
String phno = Long.toString(phnumber);
//Binding values to TextViews
nameText.setText("name :"+name);
phText.setText("phnumber :"+phno);
}

}

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ram.bundledemo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.ram.bundledemo.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="Second"></activity>
    </application>

</manifest>