Initial leanback sample code.

SupportLeanbackDemos starts out with a fully functional app with a
BrowseFragment. Still need to add examples with cursors, hovercards,
and more.

Change-Id: I845d5b92c29a5585af7968b08e7daa11b2996f5a

samples/SupportLeanbackDemos/Android.mk

@@ -0,0 +1,35 @@
+# Copyright (C) 2014 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.
+
+LOCAL_PATH:= $(call my-dir)
+
+# Build the samples.
+# We need to add some special AAPT flags to generate R classes
+# for resources that are included from the libraries.
+include $(CLEAR_VARS)
+LOCAL_PACKAGE_NAME := SupportLeanbackDemos
+LOCAL_MODULE_TAGS := samples tests
+LOCAL_SDK_VERSION := current
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+LOCAL_STATIC_JAVA_LIBRARIES := \
+        android-support-v4 \
+        android-support-v7-recyclerview \
+        android-support-v17-leanback
+LOCAL_RESOURCE_DIR = \
+        $(LOCAL_PATH)/res \
+        frameworks/support/v17/leanback/res
+LOCAL_AAPT_FLAGS := \
+        --auto-add-overlay \
+        --extra-packages android.support.v17.leanback
+include $(BUILD_PACKAGE)

samples/SupportLeanbackDemos/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.leanback"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <uses-sdk android:minSdkVersion="17" android:targetSdkVersion="19" />
+
+    <application
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:banner="@drawable/ic_launcher"
+        android:theme="@style/Theme.Leanback">
+
+        <activity android:name="MainActivity"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>

samples/SupportLeanbackDemos/res/drawable/text_bg.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2014 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.
+-->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:startColor="#FFFF0000"
+        android:endColor="#80FF00FF"
+        android:angle="45" />
+    <padding
+        android:left="7dp"
+        android:top="7dp"
+        android:right="7dp"
+        android:bottom="7dp" />
+</shape>

samples/SupportLeanbackDemos/res/layout/main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2014 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.
+-->
+
+<fragment xmlns:android="http://schemas.android.com/apk/res/android"
+    android:name="com.example.android.leanback.BrowseFragment"
+    android:id="@+id/main_browse_fragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+/>

samples/SupportLeanbackDemos/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2014 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.
+-->
+
+<resources>
+    <string name="app_name">MainActivity</string>
+</resources>

samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java

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+/*
+ * Copyright (C) 2014 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.leanback;
+
+import android.os.Bundle;
+import android.support.v17.leanback.widget.ArrayObjectAdapter;
+import android.support.v17.leanback.widget.HeaderItem;
+import android.support.v17.leanback.widget.ListRow;
+import android.support.v17.leanback.widget.ListRowPresenter;
+import android.util.Log;
+
+public class BrowseFragment extends android.support.v17.leanback.app.BrowseFragment {
+    private static final String TAG = "leanback.BrowseFragment";
+
+    private static final int NUM_ROWS = 3;
+    private ArrayObjectAdapter mRowsAdapter;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        Log.i(TAG, "onCreate");
+        super.onCreate(savedInstanceState);
+
+        Params p = new Params();
+        p.setTitle("Leanback Sample App");
+        p.setHeadersState(HEADERS_ENABLED);
+        setBrowseParams(p);
+
+        setupRows();
+    }
+
+    private void setupRows() {
+        mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
+
+
+        for (int i = 0; i < NUM_ROWS; ++i) {
+            ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(new StringPresenter());
+            listRowAdapter.add("Hello world");
+            listRowAdapter.add("This is a test");
+            HeaderItem header = new HeaderItem(i, "Row " + i, null);
+            mRowsAdapter.add(new ListRow(header, listRowAdapter));
+        }
+
+        setAdapter(mRowsAdapter);
+    }
+}

samples/SupportLeanbackDemos/src/com/example/android/leanback/MainActivity.java

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+/*
+ * Copyright (C) 2014 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.leanback;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+public class MainActivity extends Activity
+{
+    /** Called when the activity is first created. */
+    @Override
+    public void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.main);
+    }
+}

samples/SupportLeanbackDemos/src/com/example/android/leanback/StringPresenter.java

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+/*
+ * Copyright (C) 2014 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.leanback;
+
+import android.support.v17.leanback.widget.Presenter;
+import android.util.Log;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+public class StringPresenter extends Presenter {
+    private static final String TAG = "StringPresenter";
+
+    public ViewHolder onCreateViewHolder(ViewGroup parent) {
+        Log.d(TAG, "onCreateViewHolder");
+        TextView tv = new TextView(parent.getContext());
+        tv.setFocusable(true);
+        tv.setFocusableInTouchMode(true);
+        tv.setBackground(
+                parent.getContext().getResources().getDrawable(R.drawable.text_bg));
+        return new ViewHolder(tv);
+    }
+
+    public void onBindViewHolder(ViewHolder viewHolder, Object item) {
+        Log.d(TAG, "onBindViewHolder for " + item.toString());
+        ((TextView) viewHolder.view).setText(item.toString());
+    }
+
+    public void onUnbindViewHolder(ViewHolder viewHolder) {
+        Log.d(TAG, "onUnbindViewHolder"); 
+    }
+}