1 files changed, 65 insertions, 0 deletions
diff --git a/tests/src/com/android/launcher3/util/SimpleActivityMonitor.java b/tests/src/com/android/launcher3/util/SimpleActivityMonitor.java
new file mode 100644
index 000000000..6154ab6c5
--- /dev/null
+++ b/tests/src/com/android/launcher3/util/SimpleActivityMonitor.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.android.launcher3.util;
+
+import android.app.Activity;
+import android.app.Application.*;
+import android.os.Bundle;
+
+import java.util.ArrayList;
+
+/**
+ * Simple monitor to keep a list of active activities.
+ */
+public class SimpleActivityMonitor implements ActivityLifecycleCallbacks {
+
+    public final ArrayList<Activity> created = new ArrayList<>();
+    public final ArrayList<Activity> started = new ArrayList<>();
+    public final ArrayList<Activity> resumed = new ArrayList<>();
+
+    @Override
+    public void onActivityCreated(Activity activity, Bundle bundle) {
+        created.add(activity);
+    }
+
+    @Override
+    public void onActivityStarted(Activity activity) {
+        started.add(activity);
+    }
+
+    @Override
+    public void onActivityResumed(Activity activity) {
+        resumed.add(activity);
+    }
+
+    @Override
+    public void onActivityPaused(Activity activity) {
+        resumed.remove(activity);
+    }
+
+    @Override
+    public void onActivityStopped(Activity activity) {
+        started.remove(activity);
+    }
+
+    @Override
+    public void onActivitySaveInstanceState(Activity activity, Bundle bundle) { }
+
+    @Override
+    public void onActivityDestroyed(Activity activity) {
+        created.remove(activity);
+    }
+}