main.xml second.xml setting.xml
main.xml (code)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/uname"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:text="@string/Uname">
</TextView>
<EditText
android:id="@+id/utextbox"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</EditText>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/pass"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:text="@string/Pass">
</TextView>
<EditText
android:id="@+id/ptextbox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:password="true">
</EditText>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
<Button
android:id="@+id/login"
android:layout_width="70dp"
android:layout_height="wrap_content"
android:text="@string/Login">
</Button>
<Button
android:id="@+id/clear"
android:layout_width="70dp"
android:layout_height="wrap_content"
android:text="@string/Clear">
</Button>
</LinearLayout>
</LinearLayout>
second.xml (code)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/mainLayout"
android:gravity="center">
<TextView
android:id="@+id/welcomeNote"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Welcome !!"
android:textAppearance="?android:attr/textAppearanceLarge"
android:gravity="center">
</TextView>
<Button
android:id="@+id/setting"
android:layout_width="90dp"
android:layout_height="wrap_content"
android:text="@string/setting"
android:textSize="20dp"
android:gravity="center">
</Button>
</LinearLayout>
setting.xml (code)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:text="@string/msg"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="@+id/cs"
android:textSize="30dp"
android:gravity="center"
android:textColor="@color/yellow">
</TextView>
</LinearLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, Ex1Activity!</string>
<string name="app_name">Ex1</string>
<string name="Uname">User Name : </string>
<string name="Pass">Password : </string>
<string name="Login">Login</string>
<string name="Clear">Clear</string>
<string name="WelcomeNote">Welcome </string>
<string name="setting">Setting</string>
<string name="msg">Coming Soon...</string>
</resources>
color.xml (How to add new xml file ?)
<?xml version="1.0" encoding="UTF-8"?>
<resources>
<color name="yellow">#FFFF00</color>
</resources>
Ex1Activity.java
package com.exc.first;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Ex1Activity extends Activity {
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//read component from xml file
Button login = (Button)findViewById(R.id.login);
/**
* set OnClickListener on button
* so that code which is in between { } is run on click on login button
*/
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
/**
* make Intent to call other activity
* here Ex1Activity.this to go second.class
* on click login button
*/
Intent SecAct = new Intent(Ex1Activity.this,second.class);
//start second activity
startActivity(SecAct);
}
});
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
/**
* it show massage on LogCat when Activity starts
*/
Log.i("Login Activity", "Start");
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
/**
* It show massage on LogCat when Activity OnPause
*/
Log.i("Login Activity", "Pause");
}
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
/**
* it show massage on LogCat when Activity onRestart
*/
Log.i("Login Activity", "Restart");
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
/**
* it show massage on LogCat when Activity OnResume
*/
Log.i("Login Activity", "Resume");
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
/**
* it show massage on LogCat when Activity Stop
*/
Log.i("Login Activity", "Stop");
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
/**
* it show massage on LogCat when Activity Destroys
*/
Log.i("Login Activity", "Destroy");
}
}
second.java (How to add new java file ? )
package com.exc.first;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class second extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
//read button from xml file
Button setting =(Button)findViewById(R.id.setting);
setting.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent goToSetting = new Intent(second.this,setting.class); //go to third Activity
startActivity(goToSetting);
}
});
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
/**
* it show massage on LogCat when Activity starts
*/
Log.i("Second Activity", "Start");
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
/**
* it show massage on LogCat when Activity on pause
*/
Log.i("Second Activity", "Pause");
}
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
/**
* it show massage on LogCat when Activity Restart
*/
Log.i("Second Activity", "Restart");
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
/**
* it show massage on LogCat when Activity Resume
*/
Log.i("Second Activity", "Resume");
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
/**
* it show massage on LogCat when Activity stop
*/
Log.i("Second Activity", "Stop");
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
/**
* it show massage on LogCat when Activity Destroy
*/
Log.i("Second Activity", "Destroy");
}
}
setting.java
package com.exc.first;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class setting extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.setting);
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
/**
* it show massage on LogCat when Activity starts
*/
Log.i("Third Activity", "Start");
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
/**
* it show massage on LogCat when Activity Pause
*/
Log.i("Third Activity", "Pause");
}
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
/**
* it show massage on LogCat when Activity Restarts
*/
Log.i("Third Activity", "Restart");
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
/**
* it show massage on LogCat when Activity Resume
*/
Log.i("Third Activity", "Resume");
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
/**
* it show massage on LogCat when Activity stop
*/
Log.i("Third Activity", "Stop");
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
/**
* it show massage on LogCat when Activity Destroy
*/
Log.i("Third Activity", "Destroy");
}
}
and don't forget to enter entry of your new java file into manifest file
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.exc.first"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Ex1Activity"
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"
android:label="@string/app_name">
</activity>
<activity android:name=".setting"
android:label="@string/app_name">
</activity>
</application>
</manifest>
Output
