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Create an application that converts the speed from km / h in m / sec and m / sec to km / h

---------------- ---------------- main.xml \u0026lt;? xml version = " 1.0 "encoding =" utf-8 "?>

\u0026lt;TableLayout xmlns: android =" http://schemas.android.com/apk/res/android "

android: layout_width =" fill_parent " ;

android: layout_height = "fill_parent"

android: stretch columns = "1" >

\u0026lt;TableRow>

\u0026lt;

EditText android: id = "@ + id/v1"

android : layout_width = "200px" android

: layout_height = "wrap_content"

/>

\u0026lt;TextView android:text="km/h" />

\u0026lt;/ TableRow>

\u0026lt; ; TableRow>

\u0026lt;EditText

android:id="@+id/v2"

android:layout_width="200px"

android:layout_height="wrap_content"

/>

\u0026lt;TextView android : text = "m / sec" />

\u0026lt;/ TableRow>

\u0026lt;Button

android: id = "@ + id/conv1"

android: layout_width = "200px"

android: layout_height = "wrap_content"

android: onClick = "conv1"

android: text = "converted from km / ham / sec"

/>

\u0026lt;

Button android: id = "+ @ id/conv2"

android: layout_width = "200px" android

: layout_height = "wrap_content"

android: onClick = "conv2"

android: text = "converted from m / sec km / h"

/>

\u0026lt;/ TableLayout>

----------------

convertiVelocita.java

----------------

package org.me.convertiVelocita;

import android.app.Activity;

import android.os.Bundle;

import android.content.Context;

import android.widget.*; import android.view.View;

import android.content.Intent;

public class convertiVelocita extends Activity

{

/** Called when the activity is first created. */

final double a=0.2777;

final double b=3.6;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

}

public void conv1 (View view){

//da km/h a m/sec

EditText vel1=(EditText)findViewById(R.id.v1);

double kmh=Double.parseDouble(vel1.getText().toString());

double velocita=kmh*a;

String risp=Double.toString(velocita);

EditText vel2=(EditText)findViewById(R.id.v2);

vel2.setText(risp);

vel1.setText("");

}

public void conv2 (View view){

/ / m / sec to km / h

VEL2 EditText = (EditText) findViewById (R.id.v2)

double kmh = Double.parseDouble (vel2.getText (). ToString ());

double speed kmh = * b;

Double.ToString String resp = (speed);

vel1 EditText = (EditText) findViewById (R.id.v1)

vel1.setText (resp);

VEL2. setText ("");

}}

----------------------------- -----------------------------------

Create an application with 3 buttons showing which button was pressed

----------------

qualeBottone.java

----------------

package org.me.qualeBottone; import android.app.Activity;

import android.os.Bundle;

import android.content.Context;

import android.widget.*; import android.view.View;

import android.content.Intent;

public class qualeBottone extends Activity

{

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView (R.layout.main)

} public void button (View view) {int x =

view.getId ();

TextView view = (TextView) findViewById (R.id.mostra);

if (x == R.id.a1) {

visualizza.setText ("Press the button 1");

} else if (x == R.id.a2) {

visualizza.setText ("Press the button 2");

} else if (x == R.id.a3) {

visualizza.setText ("Press the button 3");}

}}

----------------

main.xml

---------------- \u0026lt;xml version = "1.0" encoding = "utf-8"?>

\u0026lt;LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android"

android: orientation = "vertical"

android: layout_width = "fill_parent"

android: layout_height = " fill_parent " >

\u0026lt;Button

android: id =" @ + id/a1 "

android: layout_width =" 200px "

android: layout_height = "wrap_content"

android: onClick = "Botton"

android: text = "1"

/>

\u0026lt;Button

android: id = "@ + id/a2 "

android: layout_width =" 200px "android

: layout_height =" wrap_content "

android: onClick =" Botton "

android: text =" 2 "

/>

\u0026lt;Button

android: id = "@ + id/a3"

android: layout_width = "200px" android

: layout_height = "wrap_content"

android: onClick = "Botton"

android: text = " ; 3 "

/>

\u0026lt;TextView android

: layout_width =" fill_parent "

android: layout_height =" wrap_content "

android: id =" @ + id / mostra "

/ >

\u0026lt;/ linear layout>