DiceActivity

app/src/main/java/com/example/diceroller/DiceActivity.java

@@ -2,16 +2,39 @@ package com.example.diceroller;
 
 import android.app.Activity;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import java.util.Random;
 
 /**
  * Created by thibaud on 20/04/17.
  */
 
-public class DiceActivity extends Activity {
+public class DiceActivity extends Activity implements View.OnClickListener {
+
+    private TextView textResult;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_dice);
+
+        TextView textTitle = (TextView)findViewById(R.id.textTitle);
+        textTitle.setText("6-sided dice");
+
+        textResult = (TextView)findViewById(R.id.textResult);
+        textResult.setText("");
+
+        Button rollButton = (Button)findViewById(R.id.rollButton);
+        rollButton.setOnClickListener(this);
+    }
+
+    @Override
+    public void onClick(View v){
+        Random rand = new Random();
+        int result = rand.nextInt(6) + 1;
+        this.textResult.setText(result);
     }
 }

app/src/main/java/com/example/diceroller/MainActivity.java

@@ -1,7 +1,10 @@
 package com.example.diceroller;
 
+import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
 
 public class MainActivity extends AppCompatActivity {
 
@@ -9,5 +12,23 @@ public class MainActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        Button button6 = (Button)findViewById(R.id.button6);
+        button6.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(MainActivity.this, DiceActivity.class);
+                startActivity(intent);
+            }
+        });
+
+        Button button20 = (Button)findViewById(R.id.button20);
+        button20.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(MainActivity.this, DiceActivity.class);
+                startActivity(intent);
+            }
+        });
     }
 }

app/src/main/res/layout/activity_dice.xml

@@ -21,6 +21,7 @@
         android:textSize="250sp"/>
 
     <Button
+        android:id="@+id/rollButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/roll_dice"