package icom.example.q1_amyti;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends Activity {
        @Override
            protected void onCreate(Bundle savedInstanceState) {
                        super.onCreate(savedInstanceState);
                                setContentView(R.layout.activity_main);

                                        // Couleurs RGB explicites
                                                View zoneBleue = findViewById(R.id.zone_bleue);
                                                        zoneBleue.setBackgroundColor(Color.rgb(170, 204, 238));

                                                                View zoneRose = findViewById(R.id.zone_rose);
                                                                        zoneRose.setBackgroundColor(Color.rgb(255, 170, 204));
            }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootLayout"
        android:layout_width="match_parent"
            android:layout_height="match_parent"
                android:padding="30dp">

                    <View
                            android:id="@+id/zone_bleue"
                                    android:layout_width="100dp"
                                            android:layout_height="100dp"
                                                    android:layout_alignParentStart="true"
                                                            android:layout_alignParentTop="true" />

                                                                <View
                                                                        android:id="@+id/zone_rose"
                                                                                android:layout_width="100dp"
                                                                                        android:layout_height="100dp"
                                                                                                android:layout_toEndOf="@id/zone_bleue"
                                                                                                        android:layout_alignTop="@id/zone_bleue"
                                                                                                                android:layout_marginStart="30dp" />
                                                                                                                </RelativeLayout>

            }
}