Started to implement the MainServiceHelper class

app/src/main/java/de/mobcomp/grades/main/MainServiceHelper.java

@@ -0,0 +1,34 @@
+package de.mobcomp.grades.main;
+
+import android.content.Context;
+import android.content.Intent;
+
+/**
+ * Helper class with convenience methods to start background
+ * threads by sending intents to the MainService.
+ *
+ * This class is responsible for creating unique request ids for different requests.
+ */
+public class MainServiceHelper {
+    private Context context;
+
+    public MainServiceHelper(Context context) {
+        this.context = context.getApplicationContext();
+    }
+
+    /**
+     * Build a basic intent with required extra data for each request.
+     *
+     * @param processor - processor to create (declared in the MainService)
+     * @param method - method to call by (declared in the MainService)
+     * @param requestId - request id
+     * @return intent
+     */
+    private Intent getBasicIntent(int processor, int method, long requestId) {
+        Intent intent = new Intent(context, MainService.class);
+        intent.putExtra(MainService.PROCESSOR_KEY, processor);
+        intent.putExtra(MainService.METHOD_KEY, method);
+        intent.putExtra(MainService.REQUEST_ID, requestId);
+        return intent;
+    }
+}