Q.1

a) Modify the following Android Studio code so that it includes a button when clicked it changes layout from relative to linear.

b) Also, I need to make microphone image to be able to enlarge when clicked.

Java code : package com.example.layoutdemo;

import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem;

public class MainActivity extends Activity {

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.linear_layout1); }

@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; }

@Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId();

//noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; }

return super.onOptionsItemSelected(item); } }

XML code for relativelayout:

xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="2dp" android:paddingRight="2dp"> android:id="@+id/cancelButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Cancel" />

android:id="@+id/saveButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/cancelButton" android:text="Save" /> android:layout_width="150dp" android:layout_height="150dp" android:layout_marginTop="230dp" android:padding="4dp" android:layout_below="@id/cancelButton" android:layout_centerHorizontal="true" android:src="@android:drawable/ic_btn_speak_now" />

android:id="@+id/filter_button_container" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:gravity="center|bottom" android:background="@android:color/white" android:orientation="horizontal" >

android:id="@+id/filterButton" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="Filter" />

android:id="@+id/shareButton" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="Share" />

android:id="@+id/deleteButton" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="Delete" />

XML code for linearlayout: xmlns:tools="http://schemas.android.com/tools" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="match_parent"> android:src="@android:drawable/btn_star_big_on" android:layout_width="wrap_content" android:layout_height="wrap_content"/>

android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> android:layout_width="wrap_content" android:layout_height="wrap_content"/>