parent

app/src/main/java/com/amine/myterio/app/DetailsActivity.java

@@ -15,6 +15,7 @@ public class DetailsActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_details);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
     }
 
 
@@ -36,6 +37,10 @@ public class DetailsActivity extends AppCompatActivity {
         if (id == R.id.action_settings) {
             return true;
         }
+        if (id == android.R.id.home) {
+            finish();
+            return true;
+        }
 
         return super.onOptionsItemSelected(item);
     }