Add tooltip demo to ApiDemos

Test: launch com.example.android.apis.view.Tooltips
Bug: 31515376
Change-Id: I5456740c4e93105c5058c198b22f4fd7634f3b46

samples/ApiDemos/src/com/example/android/apis/view/Tooltips.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2016 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.example.android.apis.view;
+
+import com.example.android.apis.R;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+/**
+ * A demo for tooltips
+ */
+public class Tooltips extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.tooltips);
+
+        findViewById(R.id.tooltips_code).setTooltip("This tooltip is set in code");
+    }
+}