Add singen button

app/src/main/java/com/janasroboter/MainActivity.java

@@ -53,5 +53,16 @@ public class MainActivity extends AppCompatActivity {
         Toast.makeText(this, toast, Toast.LENGTH_SHORT).show();
     }
 
+    public void btnSingen(View view) {
+        String toast = "Obacht! Etwas ist schief gelaufen.";
+        try {
+            REST.getString(URL + "/singen");
+            toast = "Singen aktiviert";
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        Toast.makeText(this, toast, Toast.LENGTH_SHORT).show();
+    }
+
 
 }

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

@@ -64,4 +64,25 @@
         android:text="Nächstes Muster:"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="41dp"
+        android:text="Singen:"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textViewMuster" />
+
+    <Button
+        android:id="@+id/btnSingen"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="90dp"
+        android:layout_marginTop="16dp"
+        android:onClick="btnSingen"
+        android:text="Singen"
+        app:layout_constraintStart_toEndOf="@+id/textView"
+        app:layout_constraintTop_toBottomOf="@+id/state" />
 </androidx.constraintlayout.widget.ConstraintLayout>