Sample code for Android U lesson: Monetization - Ads without Compromising User Experience.

Change-Id: I6b077c24f71c00e99fe6e15da127b02707ad57f3

samples/training/ads-and-ux/src/com/example/training/ads/AdsCatalogActivity.java

@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2011 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.training.ads;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentStatePagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+// Ad network-specific imports (AdMob).
+import com.google.ads.Ad;
+import com.google.ads.AdListener;
+import com.google.ads.AdRequest;
+import com.google.ads.AdView;
+import com.google.ads.AdRequest.ErrorCode;
+
+public class AdsCatalogActivity extends FragmentActivity {
+    private static final int NUM_ITEMS = 4;
+
+    // Ad network-specific mechanism to enable test mode.
+    private static final String TEST_DEVICE_ID = "...";
+
+    PagerAdapter mAdapter;
+    ViewPager mPager;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.fragment_pager);
+
+        mAdapter = new PagerAdapter(getSupportFragmentManager());
+
+        mPager = (ViewPager) findViewById(R.id.pager);
+        mPager.setAdapter(mAdapter);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            mPager.setCurrentItem(0);
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    public static class PagerAdapter extends FragmentStatePagerAdapter {
+        public PagerAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            return AdFragment.newInstance(position);
+        }
+
+        @Override
+        public int getCount() {
+            return NUM_ITEMS;
+        }
+    }
+
+    public static class AdFragment extends Fragment {
+        private int mNum;
+        private AdView mAdView;
+        private TextView mAdStatus;
+
+        static AdFragment newInstance(int num) {
+            AdFragment af = new AdFragment();
+
+            // Supply num input as an argument.
+            Bundle args = new Bundle();
+            args.putInt("num", num);
+            af.setArguments(args);
+
+            return af;
+        }
+
+        /**
+         * When creating, retrieve this instance's number from its arguments.
+         */
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            Bundle args = getArguments();
+            mNum = args != null ? args.getInt("num") : 1;
+        }
+
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                Bundle savedInstanceState) {
+            // Set up the various ad layouts on different flip pages.
+            final int[] layouts = {
+                    R.layout.ad_top,
+                    R.layout.ad_bottom,
+                    R.layout.ad_next_to_button,
+                    R.layout.ad_covers_content };
+            int layoutId = layouts[mNum];
+            View v = inflater.inflate(layoutId, container, false);
+            mAdStatus = (TextView) v.findViewById(R.id.status);
+            mAdView = (AdView) v.findViewById(R.id.ad);
+            mAdView.setAdListener(new MyAdListener());
+
+            AdRequest adRequest = new AdRequest();
+            // adRequest.addKeyword("ad keywords");
+
+            // Ad network-specific mechanism to enable test mode.  Be sure to disable before
+            // publishing your application.
+            adRequest.addTestDevice(TEST_DEVICE_ID);
+            mAdView.loadAd(adRequest);
+            return v;
+        }
+
+        @Override
+        public void onDestroy() {
+            super.onDestroy();
+            mAdView.destroy();
+        }
+
+        // Receives callbacks on various events related to fetching ads.  In this sample,
+        // the application displays a message on the screen.  A real application may,
+        // for example, fill the ad with a banner promoting a feature.
+        private class MyAdListener implements AdListener {
+
+            @Override
+            public void onDismissScreen(Ad ad) {}
+
+            @Override
+            public void onFailedToReceiveAd(Ad ad, ErrorCode errorCode) {
+                mAdStatus.setText(R.string.error_receive_ad);
+            }
+
+            @Override
+            public void onLeaveApplication(Ad ad) {}
+
+            @Override
+            public void onPresentScreen(Ad ad) {}
+
+            @Override
+            public void onReceiveAd(Ad ad) { mAdStatus.setText(""); }
+        }
+    }
+}