ANDROID : XML CODING
<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=".MainActivity" >
<EditText
android:id="@+id/et1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="70dp"
android:ems="10"
android:hint="@string/num_1"
android:inputType="textPersonName" />
<EditText
android:id="@+id/et2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/et1"
android:layout_below="@+id/et1"
android:layout_marginTop="14dp"
android:ems="10"
android:hint="@string/num_2"
android:inputType="textPersonName" >
<requestFocus />
</EditText>
<Button
android:id="@+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/et2"
android:layout_centerHorizontal="true"
android:layout_marginTop="16dp"
android:text="@string/sum" />
<TextView
android:id="@+id/tv"
android:layout_width="200dp"
android:layout_height="40dp"
android:layout_alignRight="@+id/et2"
android:layout_below="@+id/b1"
android:layout_marginTop="41dp"
android:text="@string/_" />
</RelativeLayout>
package com.sum.add;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
//Declaration part
EditText et1,et2;
Button b1;
TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Mapping part
et1=(EditText)findViewById(R.id.et1);
et2=(EditText)findViewById(R.id.et2);
tv=(TextView)findViewById(R.id.tv);
b1=(Button)findViewById(R.id.b1);
//listener part
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int a=new Integer(et1.getText().toString());
int b=new Integer(et2.getText().toString());
int c=a+b;
tv.setText("sum= "+c);
}
});
}
}
