Add sample for XML-defined Adapters.
Change-Id: I31f4f93eeea0f0cac4485ce76d9188608567f071
diff --git a/samples/XmlAdapters/Android.mk b/samples/XmlAdapters/Android.mk
new file mode 100644
index 0000000..24a3327
--- /dev/null
+++ b/samples/XmlAdapters/Android.mk
@@ -0,0 +1,16 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := samples
+
+# Only compile source java files in this apk.
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+LOCAL_PACKAGE_NAME := XmlAdaptersSample
+
+LOCAL_PROGUARD_ENABLED := disabled
+
+include $(BUILD_PACKAGE)
+
+# Use the following include to make our test apk.
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/samples/XmlAdapters/AndroidManifest.xml b/samples/XmlAdapters/AndroidManifest.xml
new file mode 100644
index 0000000..af040ad
--- /dev/null
+++ b/samples/XmlAdapters/AndroidManifest.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2008 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.example.android.xmladapters">
+
+ <uses-permission android:name="android.permission.READ_CONTACTS" />
+
+ <application android:label="@string/app_name">
+ <activity android:name="ContactsListActivity">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+
+</manifest>
diff --git a/samples/XmlAdapters/res/drawable-hdpi/ic_contact_picture.png b/samples/XmlAdapters/res/drawable-hdpi/ic_contact_picture.png
new file mode 100644
index 0000000..a60565a
--- /dev/null
+++ b/samples/XmlAdapters/res/drawable-hdpi/ic_contact_picture.png
Binary files differ
diff --git a/samples/XmlAdapters/res/layout/contact_item.xml b/samples/XmlAdapters/res/layout/contact_item.xml
new file mode 100644
index 0000000..6fcb109
--- /dev/null
+++ b/samples/XmlAdapters/res/layout/contact_item.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:gravity="center_vertical"
+ android:minHeight="?android:attr/listPreferredItemHeight">
+
+ <TextView
+ android:id="@+id/name"
+ android:layout_width="0px"
+ android:layout_weight="1.0"
+ android:layout_height="wrap_content"
+ android:textAppearance="?android:attr/textAppearanceLarge"
+ android:gravity="center_vertical"
+ android:drawablePadding="6dip"
+ android:paddingLeft="6dip"
+ android:paddingRight="6dip" />
+
+ <ImageView
+ android:id="@+id/star"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content" />
+
+</LinearLayout>
diff --git a/samples/XmlAdapters/res/layout/contacts_list.xml b/samples/XmlAdapters/res/layout/contacts_list.xml
new file mode 100644
index 0000000..973fe4b
--- /dev/null
+++ b/samples/XmlAdapters/res/layout/contacts_list.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 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.
+-->
+
+
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
+
+ <ListView
+ android:id="@android:id/list"
+ android:adapter="@xml/contacts"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent" />
+
+ <TextView android:id="@android:id/empty"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:gravity="center"
+ android:text="@string/no_contacts"
+ android:visibility="gone" />
+
+</merge>
diff --git a/samples/XmlAdapters/res/values/strings.xml b/samples/XmlAdapters/res/values/strings.xml
new file mode 100644
index 0000000..3a0b5fe
--- /dev/null
+++ b/samples/XmlAdapters/res/values/strings.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 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" BASI
+ 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 xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+ <string name="app_name">Xml Contacts Adapter</string>
+ <string name="no_contacts">No contacts available</string>
+</resources>
diff --git a/samples/XmlAdapters/res/xml/contacts.xml b/samples/XmlAdapters/res/xml/contacts.xml
new file mode 100644
index 0000000..b33d948
--- /dev/null
+++ b/samples/XmlAdapters/res/xml/contacts.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 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.
+-->
+
+<cursor-adapter xmlns:android="http://schemas.android.com/apk/res/android"
+ android:uri="content://com.android.contacts/contacts"
+ android:selection="has_phone_number=1"
+ android:layout="@layout/contact_item">
+
+ <bind android:from="display_name" android:to="@id/name" android:as="string" />
+ <bind android:from="starred" android:to="@id/star" android:as="drawable">
+ <map android:fromValue="0" android:toValue="@android:drawable/star_big_off" />
+ <map android:fromValue="1" android:toValue="@android:drawable/star_big_on" />
+ </bind>
+ <bind android:from="_id" android:to="@id/name"
+ android:as="com.example.android.xmladapters.ContactPhotoBinder" />
+
+</cursor-adapter>
diff --git a/samples/XmlAdapters/src/com/example/android/xmladapters/ContactPhotoBinder.java b/samples/XmlAdapters/src/com/example/android/xmladapters/ContactPhotoBinder.java
new file mode 100644
index 0000000..947eb2a
--- /dev/null
+++ b/samples/XmlAdapters/src/com/example/android/xmladapters/ContactPhotoBinder.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2010 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.xmladapters;
+
+import android.content.ContentUris;
+import android.content.Context;
+import android.content.res.Resources;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.provider.ContactsContract;
+import android.view.View;
+import android.widget.Adapters;
+import android.widget.TextView;
+
+import java.io.InputStream;
+import java.util.HashMap;
+
+/**
+ * This custom cursor binder is used by the adapter defined in res/xml to
+ * bin contacts photos to their respective list item. This binder simply
+ * queries a contact's photo based on the contact's id and sets the
+ * photo as a compound drawable on the TextView used to display the contact's
+ * name.
+ */
+public class ContactPhotoBinder extends Adapters.CursorBinder {
+ private static final int PHOTO_SIZE_DIP = 54;
+
+ private final Drawable mDefault;
+ private final HashMap<Long, Drawable> mCache;
+ private final Resources mResources;
+ private final int mPhotoSize;
+
+ public ContactPhotoBinder(Context context, Adapters.CursorTransformation transformation) {
+ super(context, transformation);
+
+ mResources = mContext.getResources();
+ // Default picture used when a contact does not provide one
+ mDefault = mResources.getDrawable(R.drawable.ic_contact_picture);
+ // Cache used to avoid requerying contacts photos every time
+ mCache = new HashMap<Long, Drawable>();
+ // Compute the size of the photo based on the display's density
+ mPhotoSize = (int) (PHOTO_SIZE_DIP * mResources.getDisplayMetrics().density + 0.5f);
+ }
+
+ @Override
+ public boolean bind(View view, Cursor cursor, int columnIndex) {
+ final long id = cursor.getLong(columnIndex);
+
+ // First check whether we have already cached the contact's photo
+ Drawable d = mCache.get(id);
+
+ if (d == null) {
+ // If the photo wasn't in the cache, ask the contacts provider for
+ // an input stream we can use to load the photo
+ Uri uri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id);
+ InputStream stream = ContactsContract.Contacts.openContactPhotoInputStream(
+ mContext.getContentResolver(), uri);
+
+ // Creates the drawable for the contact's photo or use our fallback drawable
+ if (stream != null) {
+ Bitmap bitmap = BitmapFactory.decodeStream(stream);
+ d = new BitmapDrawable(mResources, bitmap);
+ } else {
+ d = mDefault;
+ }
+
+ d.setBounds(0, 0, mPhotoSize, mPhotoSize);
+ ((TextView) view).setCompoundDrawables(d, null, null, null);
+
+ // Remember the photo associated with this contact
+ mCache.put(id, d);
+ } else {
+ ((TextView) view).setCompoundDrawables(d, null, null, null);
+ }
+
+ return true;
+ }
+}
diff --git a/samples/XmlAdapters/src/com/example/android/xmladapters/ContactsListActivity.java b/samples/XmlAdapters/src/com/example/android/xmladapters/ContactsListActivity.java
new file mode 100644
index 0000000..bf5ab58
--- /dev/null
+++ b/samples/XmlAdapters/src/com/example/android/xmladapters/ContactsListActivity.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2010 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.xmladapters;
+
+import android.app.ListActivity;
+import android.os.Bundle;
+
+/**
+ * This activity demonstrates how to create a complex UI using a ListView
+ * and an adapter defined in XML.
+ *
+ * The following activity shows a list of contacts, their starred status
+ * and their photos, using the adapter defined in res/xml.
+ */
+public class ContactsListActivity extends ListActivity {
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.contacts_list);
+ }
+}
