Основы разработки интерфейсов мобильных приложений

<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" 
	android:background="@drawable/background">

	<LinearLayout
		android:id="@+id/linear1"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:layout_alignParentLeft="true"
		android:layout_alignParentRight="true"
		android:orientation="horizontal" >
		<EditText
			android:id="@+id/edit_message"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:ems="10"
			android:hint="@string/edit_message"
			android:textColor="#ffffff" >
			<requestFocus />
		</EditText>

		<Button
			android:id="@+id/button1"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:text="@string/button_send" 
		/>
	</LinearLayout>

	<FrameLayout
		android:id="@+id/imgview"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:layout_above="@+id/relative2"
		android:layout_below="@id/linear1" >
		<ImageView
			android:id="@+id/puppy"
			android:layout_width="wrap_content"
			android:layout_height="match_parent"
			android:src="@drawable/puppy" 
		/>
	</FrameLayout>

	<RelativeLayout
		android:id="@+id/relative2"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:layout_alignLeft="@+id/imgview"
		android:layout_alignParentBottom="true"
		android:layout_alignRight="@+id/imgview" >
		<ImageButton
			android:id="@+id/imageButton2"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:layout_alignParentRight="true"
			android:layout_alignParentTop="true"
			android:src="@drawable/dislike" 
		/>
		<ImageButton
			android:id="@+id/imageButton1"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:layout_alignParentLeft="true"
			android:layout_alignParentTop="true"
			android:src="@drawable/like" 
		/>
	</RelativeLayout>

</RelativeLayout>
        

<?xml version="1.0" encoding="utf-8"?>
<resources>

		<string name="app_name">RatingImages</string>
		<string name="action_settings">Settings</string>
		<string name="hello_world">Hello world!</string>
		<string name="edit_message">Enter your text here</string>
		<string name="button_send">Go!</string>

</resources> 
        

<?xml version="1.0" encoding="utf-8"?>

<bitmap
	xmlns:android="http://schemas.android.com/apk/res/android" 
	android:src="@drawable/starring"
	android:tileMode="repeat" >

</bitmap>