First commit for ListViewDraggingAnimation.
Change-Id: Ib1642809b33cba3f8e319b43688047672cffaf19
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/AndroidManifest.xml b/samples/devbytes/animation/ListViewDraggingAnimation/AndroidManifest.xml
new file mode 100644
index 0000000..5702dca
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/AndroidManifest.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.example.android.listviewdragginganimation"
+ android:versionCode="1"
+ android:versionName="1.0">
+ <uses-sdk android:minSdkVersion="11"
+ android:targetSdkVersion="17"/>
+ <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
+ <activity android:name=".ListViewDraggingAnimation"
+ android:label="@string/app_name">
+ <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/devbytes/animation/ListViewDraggingAnimation/res/drawable-hdpi/ic_launcher.png b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-hdpi/ic_launcher.png
new file mode 100644
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--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-ldpi/ic_launcher.png b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-ldpi/ic_launcher.png
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--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-ldpi/ic_launcher.png
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diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-mdpi/ic_launcher.png b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..359047d
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-xhdpi/ic_launcher.png b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..71c6d76
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/layout/activity_list_view.xml b/samples/devbytes/animation/ListViewDraggingAnimation/res/layout/activity_list_view.xml
new file mode 100644
index 0000000..68198bc
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/layout/activity_list_view.xml
@@ -0,0 +1,29 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:id="@+id/mainLayout"
+ xmlns:tools="http://schemas.android.com/tools"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ tools:context=".ListViewAnimations" >
+
+ <com.example.android.listviewdragginganimation.DynamicListView
+ android:id="@+id/listview"
+ android:background="#0000"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content" />
+
+</RelativeLayout>
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/layout/text_view.xml b/samples/devbytes/animation/ListViewDraggingAnimation/res/layout/text_view.xml
new file mode 100644
index 0000000..d7aeb7a
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/layout/text_view.xml
@@ -0,0 +1,26 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:background="#FFF"
+ android:textSize="@dimen/list_text_size"
+ android:gravity="center_vertical"
+ android:paddingLeft="15dp"
+ android:paddingRight="15dp"
+ android:minHeight="@dimen/list_item_height"
+ android:textColor="#000000"
+/>
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/values/dimens.xml b/samples/devbytes/animation/ListViewDraggingAnimation/res/values/dimens.xml
new file mode 100644
index 0000000..d647948
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/values/dimens.xml
@@ -0,0 +1,20 @@
+<!-- Copyright (C) 2013 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>
+
+ <dimen name="list_text_size">16sp</dimen>
+ <dimen name="list_item_height">48dip</dimen>
+
+</resources>
\ No newline at end of file
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/res/values/strings.xml b/samples/devbytes/animation/ListViewDraggingAnimation/res/values/strings.xml
new file mode 100644
index 0000000..bbe6f91
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!-- Copyright (C) 2013 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">ListViewDraggingAnimation</string>
+
+</resources>
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/Cheeses.java b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/Cheeses.java
new file mode 100644
index 0000000..f5422cf
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/Cheeses.java
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2013 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.listviewdragginganimation;
+
+public class Cheeses {
+
+ public static final String[] sCheeseStrings = {
+ "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",
+ "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale",
+ "Aisy Cendre", "Allgauer Emmentaler", "Alverca", "Ambert", "American Cheese",
+ "Ami du Chambertin", "Anejo Enchilado", "Anneau du Vic-Bilh", "Anthoriro", "Appenzell",
+ "Aragon", "Ardi Gasna", "Ardrahan", "Armenian String", "Aromes au Gene de Marc",
+ "Asadero", "Asiago", "Aubisque Pyrenees", "Autun", "Avaxtskyr", "Baby Swiss",
+ "Babybel", "Baguette Laonnaise", "Bakers", "Baladi", "Balaton", "Bandal", "Banon",
+ "Barry's Bay Cheddar", "Basing", "Basket Cheese", "Bath Cheese", "Bavarian Bergkase",
+ "Baylough", "Beaufort", "Beauvoorde", "Beenleigh Blue", "Beer Cheese", "Bel Paese",
+ "Bergader", "Bergere Bleue", "Berkswell", "Beyaz Peynir", "Bierkase", "Bishop Kennedy",
+ "Blarney", "Bleu d'Auvergne", "Bleu de Gex", "Bleu de Laqueuille",
+ "Bleu de Septmoncel", "Bleu Des Causses", "Blue", "Blue Castello", "Blue Rathgore",
+ "Blue Vein (Australian)", "Blue Vein Cheeses", "Bocconcini", "Bocconcini (Australian)",
+ "Boeren Leidenkaas", "Bonchester", "Bosworth", "Bougon", "Boule Du Roves",
+ "Boulette d'Avesnes", "Boursault", "Boursin", "Bouyssou", "Bra", "Braudostur",
+ "Breakfast Cheese", "Brebis du Lavort", "Brebis du Lochois", "Brebis du Puyfaucon",
+ "Bresse Bleu", "Brick", "Brie", "Brie de Meaux", "Brie de Melun", "Brillat-Savarin",
+ "Brin", "Brin d' Amour", "Brin d'Amour", "Brinza (Burduf Brinza)",
+ "Briquette de Brebis", "Briquette du Forez", "Broccio", "Broccio Demi-Affine",
+ "Brousse du Rove", "Bruder Basil", "Brusselae Kaas (Fromage de Bruxelles)", "Bryndza",
+ "Buchette d'Anjou", "Buffalo", "Burgos", "Butte", "Butterkase", "Button (Innes)",
+ "Buxton Blue", "Cabecou", "Caboc", "Cabrales", "Cachaille", "Caciocavallo", "Caciotta",
+ "Caerphilly", "Cairnsmore", "Calenzana", "Cambazola", "Camembert de Normandie",
+ "Canadian Cheddar", "Canestrato", "Cantal", "Caprice des Dieux", "Capricorn Goat",
+ "Capriole Banon", "Carre de l'Est", "Casciotta di Urbino", "Cashel Blue", "Castellano",
+ "Castelleno", "Castelmagno", "Castelo Branco", "Castigliano", "Cathelain",
+ "Celtic Promise", "Cendre d'Olivet", "Cerney", "Chabichou", "Chabichou du Poitou",
+ "Chabis de Gatine", "Chaource", "Charolais", "Chaumes", "Cheddar",
+ "Cheddar Clothbound", "Cheshire", "Chevres", "Chevrotin des Aravis", "Chontaleno",
+ "Civray", "Coeur de Camembert au Calvados", "Coeur de Chevre", "Colby", "Cold Pack",
+ "Comte", "Coolea", "Cooleney", "Coquetdale", "Corleggy", "Cornish Pepper",
+ "Cotherstone", "Cotija", "Cottage Cheese", "Cottage Cheese (Australian)",
+ "Cougar Gold", "Coulommiers", "Coverdale", "Crayeux de Roncq", "Cream Cheese",
+ "Cream Havarti", "Crema Agria", "Crema Mexicana", "Creme Fraiche", "Crescenza",
+ "Croghan", "Crottin de Chavignol", "Crottin du Chavignol", "Crowdie", "Crowley",
+ "Cuajada", "Curd", "Cure Nantais", "Curworthy", "Cwmtawe Pecorino",
+ "Cypress Grove Chevre", "Danablu (Danish Blue)", "Danbo", "Danish Fontina",
+ "Daralagjazsky", "Dauphin", "Delice des Fiouves", "Denhany Dorset Drum", "Derby",
+ "Dessertnyj Belyj", "Devon Blue", "Devon Garland", "Dolcelatte", "Doolin",
+ "Doppelrhamstufel", "Dorset Blue Vinney", "Double Gloucester", "Double Worcester",
+ "Dreux a la Feuille", "Dry Jack", "Duddleswell", "Dunbarra", "Dunlop", "Dunsyre Blue",
+ "Duroblando", "Durrus", "Dutch Mimolette (Commissiekaas)", "Edam", "Edelpilz",
+ "Emental Grand Cru", "Emlett", "Emmental", "Epoisses de Bourgogne", "Esbareich",
+ "Esrom", "Etorki", "Evansdale Farmhouse Brie", "Evora De L'Alentejo", "Exmoor Blue",
+ "Explorateur", "Feta", "Feta (Australian)", "Figue", "Filetta", "Fin-de-Siecle",
+ "Finlandia Swiss", "Finn", "Fiore Sardo", "Fleur du Maquis", "Flor de Guia",
+ "Flower Marie", "Folded", "Folded cheese with mint", "Fondant de Brebis",
+ "Fontainebleau", "Fontal", "Fontina Val d'Aosta", "Formaggio di capra", "Fougerus",
+ "Four Herb Gouda", "Fourme d' Ambert", "Fourme de Haute Loire", "Fourme de Montbrison",
+ "Fresh Jack", "Fresh Mozzarella", "Fresh Ricotta", "Fresh Truffles", "Fribourgeois",
+ "Friesekaas", "Friesian", "Friesla", "Frinault", "Fromage a Raclette", "Fromage Corse",
+ "Fromage de Montagne de Savoie", "Fromage Frais", "Fruit Cream Cheese",
+ "Frying Cheese", "Fynbo", "Gabriel", "Galette du Paludier", "Galette Lyonnaise",
+ "Galloway Goat's Milk Gems", "Gammelost", "Gaperon a l'Ail", "Garrotxa", "Gastanberra",
+ "Geitost", "Gippsland Blue", "Gjetost", "Gloucester", "Golden Cross", "Gorgonzola",
+ "Gornyaltajski", "Gospel Green", "Gouda", "Goutu", "Gowrie", "Grabetto", "Graddost",
+ "Grafton Village Cheddar", "Grana", "Grana Padano", "Grand Vatel",
+ "Grataron d' Areches", "Gratte-Paille", "Graviera", "Greuilh", "Greve",
+ "Gris de Lille", "Gruyere", "Gubbeen", "Guerbigny", "Halloumi",
+ "Halloumy (Australian)", "Haloumi-Style Cheese", "Harbourne Blue", "Havarti",
+ "Heidi Gruyere", "Hereford Hop", "Herrgardsost", "Herriot Farmhouse", "Herve",
+ "Hipi Iti", "Hubbardston Blue Cow", "Hushallsost", "Iberico", "Idaho Goatster",
+ "Idiazabal", "Il Boschetto al Tartufo", "Ile d'Yeu", "Isle of Mull", "Jarlsberg",
+ "Jermi Tortes", "Jibneh Arabieh", "Jindi Brie", "Jubilee Blue", "Juustoleipa",
+ "Kadchgall", "Kaseri", "Kashta", "Kefalotyri", "Kenafa", "Kernhem", "Kervella Affine",
+ "Kikorangi", "King Island Cape Wickham Brie", "King River Gold", "Klosterkaese",
+ "Knockalara", "Kugelkase", "L'Aveyronnais", "L'Ecir de l'Aubrac", "La Taupiniere",
+ "La Vache Qui Rit", "Laguiole", "Lairobell", "Lajta", "Lanark Blue", "Lancashire",
+ "Langres", "Lappi", "Laruns", "Lavistown", "Le Brin", "Le Fium Orbo", "Le Lacandou",
+ "Le Roule", "Leafield", "Lebbene", "Leerdammer", "Leicester", "Leyden", "Limburger",
+ "Lincolnshire Poacher", "Lingot Saint Bousquet d'Orb", "Liptauer", "Little Rydings",
+ "Livarot", "Llanboidy", "Llanglofan Farmhouse", "Loch Arthur Farmhouse",
+ "Loddiswell Avondale", "Longhorn", "Lou Palou", "Lou Pevre", "Lyonnais", "Maasdam",
+ "Macconais", "Mahoe Aged Gouda", "Mahon", "Malvern", "Mamirolle", "Manchego",
+ "Manouri", "Manur", "Marble Cheddar", "Marbled Cheeses", "Maredsous", "Margotin",
+ "Maribo", "Maroilles", "Mascares", "Mascarpone", "Mascarpone (Australian)",
+ "Mascarpone Torta", "Matocq", "Maytag Blue", "Meira", "Menallack Farmhouse",
+ "Menonita", "Meredith Blue", "Mesost", "Metton (Cancoillotte)", "Meyer Vintage Gouda",
+ "Mihalic Peynir", "Milleens", "Mimolette", "Mine-Gabhar", "Mini Baby Bells", "Mixte",
+ "Molbo", "Monastery Cheeses", "Mondseer", "Mont D'or Lyonnais", "Montasio",
+ "Monterey Jack", "Monterey Jack Dry", "Morbier", "Morbier Cru de Montagne",
+ "Mothais a la Feuille", "Mozzarella", "Mozzarella (Australian)",
+ "Mozzarella di Bufala", "Mozzarella Fresh, in water", "Mozzarella Rolls", "Munster",
+ "Murol", "Mycella", "Myzithra", "Naboulsi", "Nantais", "Neufchatel",
+ "Neufchatel (Australian)", "Niolo", "Nokkelost", "Northumberland", "Oaxaca",
+ "Olde York", "Olivet au Foin", "Olivet Bleu", "Olivet Cendre",
+ "Orkney Extra Mature Cheddar", "Orla", "Oschtjepka", "Ossau Fermier", "Ossau-Iraty",
+ "Oszczypek", "Oxford Blue", "P'tit Berrichon", "Palet de Babligny", "Paneer", "Panela",
+ "Pannerone", "Pant ys Gawn", "Parmesan (Parmigiano)", "Parmigiano Reggiano",
+ "Pas de l'Escalette", "Passendale", "Pasteurized Processed", "Pate de Fromage",
+ "Patefine Fort", "Pave d'Affinois", "Pave d'Auge", "Pave de Chirac", "Pave du Berry",
+ "Pecorino", "Pecorino in Walnut Leaves", "Pecorino Romano", "Peekskill Pyramid",
+ "Pelardon des Cevennes", "Pelardon des Corbieres", "Penamellera", "Penbryn",
+ "Pencarreg", "Perail de Brebis", "Petit Morin", "Petit Pardou", "Petit-Suisse",
+ "Picodon de Chevre", "Picos de Europa", "Piora", "Pithtviers au Foin",
+ "Plateau de Herve", "Plymouth Cheese", "Podhalanski", "Poivre d'Ane", "Polkolbin",
+ "Pont l'Eveque", "Port Nicholson", "Port-Salut", "Postel", "Pouligny-Saint-Pierre",
+ "Pourly", "Prastost", "Pressato", "Prince-Jean", "Processed Cheddar", "Provolone",
+ "Provolone (Australian)", "Pyengana Cheddar", "Pyramide", "Quark",
+ "Quark (Australian)", "Quartirolo Lombardo", "Quatre-Vents", "Quercy Petit",
+ "Queso Blanco", "Queso Blanco con Frutas --Pina y Mango", "Queso de Murcia",
+ "Queso del Montsec", "Queso del Tietar", "Queso Fresco", "Queso Fresco (Adobera)",
+ "Queso Iberico", "Queso Jalapeno", "Queso Majorero", "Queso Media Luna",
+ "Queso Para Frier", "Queso Quesadilla", "Rabacal", "Raclette", "Ragusano", "Raschera",
+ "Reblochon", "Red Leicester", "Regal de la Dombes", "Reggianito", "Remedou",
+ "Requeson", "Richelieu", "Ricotta", "Ricotta (Australian)", "Ricotta Salata", "Ridder",
+ "Rigotte", "Rocamadour", "Rollot", "Romano", "Romans Part Dieu", "Roncal", "Roquefort",
+ "Roule", "Rouleau De Beaulieu", "Royalp Tilsit", "Rubens", "Rustinu", "Saaland Pfarr",
+ "Saanenkaese", "Saga", "Sage Derby", "Sainte Maure", "Saint-Marcellin",
+ "Saint-Nectaire", "Saint-Paulin", "Salers", "Samso", "San Simon", "Sancerre",
+ "Sap Sago", "Sardo", "Sardo Egyptian", "Sbrinz", "Scamorza", "Schabzieger", "Schloss",
+ "Selles sur Cher", "Selva", "Serat", "Seriously Strong Cheddar", "Serra da Estrela",
+ "Sharpam", "Shelburne Cheddar", "Shropshire Blue", "Siraz", "Sirene", "Smoked Gouda",
+ "Somerset Brie", "Sonoma Jack", "Sottocenare al Tartufo", "Soumaintrain",
+ "Sourire Lozerien", "Spenwood", "Sraffordshire Organic", "St. Agur Blue Cheese",
+ "Stilton", "Stinking Bishop", "String", "Sussex Slipcote", "Sveciaost", "Swaledale",
+ "Sweet Style Swiss", "Swiss", "Syrian (Armenian String)", "Tala", "Taleggio", "Tamie",
+ "Tasmania Highland Chevre Log", "Taupiniere", "Teifi", "Telemea", "Testouri",
+ "Tete de Moine", "Tetilla", "Texas Goat Cheese", "Tibet", "Tillamook Cheddar",
+ "Tilsit", "Timboon Brie", "Toma", "Tomme Brulee", "Tomme d'Abondance",
+ "Tomme de Chevre", "Tomme de Romans", "Tomme de Savoie", "Tomme des Chouans", "Tommes",
+ "Torta del Casar", "Toscanello", "Touree de L'Aubier", "Tourmalet",
+ "Trappe (Veritable)", "Trois Cornes De Vendee", "Tronchon", "Trou du Cru", "Truffe",
+ "Tupi", "Turunmaa", "Tymsboro", "Tyn Grug", "Tyning", "Ubriaco", "Ulloa",
+ "Vacherin-Fribourgeois", "Valencay", "Vasterbottenost", "Venaco", "Vendomois",
+ "Vieux Corse", "Vignotte", "Vulscombe", "Waimata Farmhouse Blue",
+ "Washed Rind Cheese (Australian)", "Waterloo", "Weichkaese", "Wellington",
+ "Wensleydale", "White Stilton", "Whitestone Farmhouse", "Wigmore", "Woodside Cabecou",
+ "Xanadu", "Xynotyro", "Yarg Cornish", "Yarra Valley Pyramid", "Yorkshire Blue",
+ "Zamorano", "Zanetti Grana Padano", "Zanetti Parmigiano Reggiano"
+ };
+
+}
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/DynamicListView.java b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/DynamicListView.java
new file mode 100644
index 0000000..580fe64
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/DynamicListView.java
@@ -0,0 +1,592 @@
+/*
+ * Copyright (C) 2013 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.listviewdragginganimation;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
+import android.animation.TypeEvaluator;
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.graphics.drawable.BitmapDrawable;
+import android.util.AttributeSet;
+import android.util.DisplayMetrics;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewTreeObserver;
+import android.widget.AbsListView;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.ListView;
+
+import java.util.ArrayList;
+
+/**
+ * The dynamic listview is an extension of listview that supports cell dragging
+ * and swapping.
+ *
+ * This layout is in charge of positioning the hover cell in the correct location
+ * on the screen in response to user touch events. It uses the position of the
+ * hover cell to determine when two cells should be swapped. If two cells should
+ * be swapped, all the corresponding data set and layout changes are handled here.
+ *
+ * If no cell is selected, all the touch events are passed down to the listview
+ * and behave normally. If one of the items in the listview experiences a
+ * long press event, the contents of its current visible state are captured as
+ * a bitmap and its visibility is set to INVISIBLE. A hover cell is then created and
+ * added to this layout as an overlaying BitmapDrawable above the listview. Once the
+ * hover cell is translated some distance to signify an item swap, a data set change
+ * accompanied by animation takes place. When the user releases the hover cell,
+ * it animates into its corresponding position in the listview.
+ *
+ * When the hover cell is either above or below the bounds of the listview, this
+ * listview also scrolls on its own so as to reveal additional content.
+ */
+public class DynamicListView extends ListView {
+
+ private final int SMOOTH_SCROLL_AMOUNT_AT_EDGE = 15;
+ private final int MOVE_DURATION = 150;
+ private final int LINE_THICKNESS = 15;
+
+ public ArrayList<String> mCheeseList;
+
+ private int mLastEventY = -1;
+
+ private int mDownY = -1;
+ private int mDownX = -1;
+
+ private int mTotalOffset = 0;
+
+ private boolean mCellIsMobile = false;
+ private boolean mIsMobileScrolling = false;
+ private int mSmoothScrollAmountAtEdge = 0;
+
+ private final int INVALID_ID = -1;
+ private long mAboveItemId = INVALID_ID;
+ private long mMobileItemId = INVALID_ID;
+ private long mBelowItemId = INVALID_ID;
+
+ private BitmapDrawable mHoverCell;
+ private Rect mHoverCellCurrentBounds;
+ private Rect mHoverCellOriginalBounds;
+
+ private final int INVALID_POINTER_ID = -1;
+ private int mActivePointerId = INVALID_POINTER_ID;
+
+ private boolean mIsWaitingForScrollFinish = false;
+ private int mScrollState = OnScrollListener.SCROLL_STATE_IDLE;
+
+ public DynamicListView(Context context) {
+ super(context);
+ init(context);
+ }
+
+ public DynamicListView(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ init(context);
+ }
+
+ public DynamicListView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ init(context);
+ }
+
+ public void init(Context context) {
+ setOnItemLongClickListener(mOnItemLongClickListener);
+ setOnScrollListener(mScrollListener);
+ DisplayMetrics metrics = context.getResources().getDisplayMetrics();
+ mSmoothScrollAmountAtEdge = (int)(SMOOTH_SCROLL_AMOUNT_AT_EDGE / metrics.density);
+ }
+
+ /**
+ * Listens for long clicks on any items in the listview. When a cell has
+ * been selected, the hover cell is created and set up.
+ */
+ private AdapterView.OnItemLongClickListener mOnItemLongClickListener =
+ new AdapterView.OnItemLongClickListener() {
+ public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int pos, long id) {
+ mTotalOffset = 0;
+
+ int position = pointToPosition(mDownX, mDownY);
+ int itemNum = position - getFirstVisiblePosition();
+
+ View selectedView = getChildAt(itemNum);
+ mMobileItemId = getAdapter().getItemId(position);
+ mHoverCell = getAndAddHoverView(selectedView);
+ selectedView.setVisibility(INVISIBLE);
+
+ mCellIsMobile = true;
+
+ updateNeighborViewsForID(mMobileItemId);
+
+ return true;
+ }
+ };
+
+ /**
+ * Creates the hover cell with the appropriate bitmap and of appropriate
+ * size. The hover cell's BitmapDrawable is drawn on top of the bitmap every
+ * single time an invalidate call is made.
+ */
+ private BitmapDrawable getAndAddHoverView(View v) {
+
+ int w = v.getWidth();
+ int h = v.getHeight();
+ int top = v.getTop();
+ int left = v.getLeft();
+
+ Bitmap b = getBitmapWithBorder(v);
+
+ BitmapDrawable drawable = new BitmapDrawable(getResources(), b);
+
+ mHoverCellOriginalBounds = new Rect(left, top, left + w, top + h);
+ mHoverCellCurrentBounds = new Rect(mHoverCellOriginalBounds);
+
+ drawable.setBounds(mHoverCellCurrentBounds);
+
+ return drawable;
+ }
+
+ /** Draws a black border over the screenshot of the view passed in. */
+ private Bitmap getBitmapWithBorder(View v) {
+ Bitmap bitmap = getBitmapFromView(v);
+ Canvas can = new Canvas(bitmap);
+
+ Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
+
+ Paint paint = new Paint();
+ paint.setStyle(Paint.Style.STROKE);
+ paint.setStrokeWidth(LINE_THICKNESS);
+ paint.setColor(Color.BLACK);
+
+ can.drawBitmap(bitmap, 0, 0, null);
+ can.drawRect(rect, paint);
+
+ return bitmap;
+ }
+
+ /** Returns a bitmap showing a screenshot of the view passed in. */
+ private Bitmap getBitmapFromView(View v) {
+ Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
+ Canvas canvas = new Canvas (bitmap);
+ v.draw(canvas);
+ return bitmap;
+ }
+
+ /**
+ * Stores a reference to the views above and below the item currently
+ * corresponding to the hover cell. It is important to note that if this
+ * item is either at the top or bottom of the list, mAboveItemId or mBelowItemId
+ * may be invalid.
+ */
+ private void updateNeighborViewsForID(long itemID) {
+ int position = getPositionForID(itemID);
+ StableArrayAdapter adapter = ((StableArrayAdapter)getAdapter());
+ mAboveItemId = adapter.getItemId(position - 1);
+ mBelowItemId = adapter.getItemId(position + 1);
+ }
+
+ /** Retrieves the view in the list corresponding to itemID */
+ public View getViewForID (long itemID) {
+ int firstVisiblePosition = getFirstVisiblePosition();
+ StableArrayAdapter adapter = ((StableArrayAdapter)getAdapter());
+ for(int i = 0; i < getChildCount(); i++) {
+ View v = getChildAt(i);
+ int position = firstVisiblePosition + i;
+ long id = adapter.getItemId(position);
+ if (id == itemID) {
+ return v;
+ }
+ }
+ return null;
+ }
+
+ /** Retrieves the position in the list corresponding to itemID */
+ public int getPositionForID (long itemID) {
+ View v = getViewForID(itemID);
+ if (v == null) {
+ return -1;
+ } else {
+ return getPositionForView(v);
+ }
+ }
+
+ /**
+ * dispatchDraw gets invoked when all the child views are about to be drawn.
+ * By overriding this method, the hover cell (BitmapDrawable) can be drawn
+ * over the listview's items whenever the listview is redrawn.
+ */
+ @Override
+ protected void dispatchDraw(Canvas canvas) {
+ super.dispatchDraw(canvas);
+ if (mHoverCell != null) {
+ mHoverCell.draw(canvas);
+ }
+ }
+
+ @Override
+ public boolean onTouchEvent (MotionEvent event) {
+
+ switch (event.getAction() & MotionEvent.ACTION_MASK) {
+ case MotionEvent.ACTION_DOWN:
+ mDownX = (int)event.getX();
+ mDownY = (int)event.getY();
+ mActivePointerId = event.getPointerId(0);
+ break;
+ case MotionEvent.ACTION_MOVE:
+ if (mActivePointerId == INVALID_POINTER_ID) {
+ break;
+ }
+
+ int pointerIndex = event.findPointerIndex(mActivePointerId);
+
+ mLastEventY = (int) event.getY(pointerIndex);
+ int deltaY = mLastEventY - mDownY;
+
+ if (mCellIsMobile) {
+ mHoverCellCurrentBounds.offsetTo(mHoverCellOriginalBounds.left,
+ mHoverCellOriginalBounds.top + deltaY + mTotalOffset);
+ mHoverCell.setBounds(mHoverCellCurrentBounds);
+ invalidate();
+
+ handleCellSwitch();
+
+ mIsMobileScrolling = false;
+ handleMobileCellScroll();
+
+ return false;
+ }
+ break;
+ case MotionEvent.ACTION_UP:
+ touchEventsEnded();
+ break;
+ case MotionEvent.ACTION_CANCEL:
+ touchEventsCancelled();
+ break;
+ case MotionEvent.ACTION_POINTER_UP:
+ /* If a multitouch event took place and the original touch dictating
+ * the movement of the hover cell has ended, then the dragging event
+ * ends and the hover cell is animated to its corresponding position
+ * in the listview. */
+ pointerIndex = (event.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >>
+ MotionEvent.ACTION_POINTER_INDEX_SHIFT;
+ final int pointerId = event.getPointerId(pointerIndex);
+ if (pointerId == mActivePointerId) {
+ touchEventsEnded();
+ }
+ break;
+ default:
+ break;
+ }
+
+ return super.onTouchEvent(event);
+ }
+
+ /**
+ * This method determines whether the hover cell has been shifted far enough
+ * to invoke a cell swap. If so, then the respective cell swap candidate is
+ * determined and the data set is changed. Upon posting a notification of the
+ * data set change, a layout is invoked to place the cells in the right place.
+ * Using a ViewTreeObserver and a corresponding OnPreDrawListener, we can
+ * offset the cell being swapped to where it previously was and then animate it to
+ * its new position.
+ */
+ private void handleCellSwitch() {
+ final int deltaY = mLastEventY - mDownY;
+ int deltaYTotal = mHoverCellOriginalBounds.top + mTotalOffset + deltaY;
+
+ View belowView = getViewForID(mBelowItemId);
+ View mobileView = getViewForID(mMobileItemId);
+ View aboveView = getViewForID(mAboveItemId);
+
+ boolean isBelow = (belowView != null) && (deltaYTotal > belowView.getTop());
+ boolean isAbove = (aboveView != null) && (deltaYTotal < aboveView.getTop());
+
+ if (isBelow || isAbove) {
+
+ final long switchItemID = isBelow ? mBelowItemId : mAboveItemId;
+ View switchView = isBelow ? belowView : aboveView;
+ final int originalItem = getPositionForView(mobileView);
+
+ if (switchView == null) {
+ updateNeighborViewsForID(mMobileItemId);
+ return;
+ }
+
+ swapElements(mCheeseList, originalItem, getPositionForView(switchView));
+
+ ((BaseAdapter) getAdapter()).notifyDataSetChanged();
+
+ mDownY = mLastEventY;
+
+ final int switchViewStartTop = switchView.getTop();
+
+ mobileView.setVisibility(View.VISIBLE);
+ switchView.setVisibility(View.INVISIBLE);
+
+ updateNeighborViewsForID(mMobileItemId);
+
+ final ViewTreeObserver observer = getViewTreeObserver();
+ observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
+ public boolean onPreDraw() {
+ observer.removeOnPreDrawListener(this);
+
+ View switchView = getViewForID(switchItemID);
+
+ mTotalOffset += deltaY;
+
+ int switchViewNewTop = switchView.getTop();
+ int delta = switchViewStartTop - switchViewNewTop;
+
+ switchView.setTranslationY(delta);
+
+ ObjectAnimator animator = ObjectAnimator.ofFloat(switchView,
+ View.TRANSLATION_Y, 0);
+ animator.setDuration(MOVE_DURATION);
+ animator.start();
+
+ return true;
+ }
+ });
+ }
+ }
+
+ private void swapElements(ArrayList arrayList, int indexOne, int indexTwo) {
+ Object temp = arrayList.get(indexOne);
+ arrayList.set(indexOne, arrayList.get(indexTwo));
+ arrayList.set(indexTwo, temp);
+ }
+
+
+ /**
+ * Resets all the appropriate fields to a default state while also animating
+ * the hover cell back to its correct location.
+ */
+ private void touchEventsEnded () {
+ final View mobileView = getViewForID(mMobileItemId);
+ if (mCellIsMobile|| mIsWaitingForScrollFinish) {
+ mCellIsMobile = false;
+ mIsWaitingForScrollFinish = false;
+ mIsMobileScrolling = false;
+ mActivePointerId = INVALID_POINTER_ID;
+
+ // If the autoscroller has not completed scrolling, we need to wait for it to
+ // finish in order to determine the final location of where the hover cell
+ // should be animated to.
+ if (mScrollState != OnScrollListener.SCROLL_STATE_IDLE) {
+ mIsWaitingForScrollFinish = true;
+ return;
+ }
+
+ mHoverCellCurrentBounds.offsetTo(mHoverCellOriginalBounds.left, mobileView.getTop());
+
+ ObjectAnimator hoverViewAnimator = ObjectAnimator.ofObject(mHoverCell, "bounds",
+ sBoundEvaluator, mHoverCellCurrentBounds);
+ hoverViewAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+ @Override
+ public void onAnimationUpdate(ValueAnimator valueAnimator) {
+ invalidate();
+ }
+ });
+ hoverViewAnimator.addListener(new AnimatorListenerAdapter() {
+ @Override
+ public void onAnimationStart(Animator animation) {
+ setEnabled(false);
+ }
+
+ @Override
+ public void onAnimationEnd(Animator animation) {
+ mAboveItemId = INVALID_ID;
+ mMobileItemId = INVALID_ID;
+ mBelowItemId = INVALID_ID;
+ mobileView.setVisibility(VISIBLE);
+ mHoverCell = null;
+ setEnabled(true);
+ invalidate();
+ }
+ });
+ hoverViewAnimator.start();
+ } else {
+ touchEventsCancelled();
+ }
+ }
+
+ /**
+ * Resets all the appropriate fields to a default state.
+ */
+ private void touchEventsCancelled () {
+ View mobileView = getViewForID(mMobileItemId);
+ if (mCellIsMobile) {
+ mAboveItemId = INVALID_ID;
+ mMobileItemId = INVALID_ID;
+ mBelowItemId = INVALID_ID;
+ mobileView.setVisibility(VISIBLE);
+ mHoverCell = null;
+ invalidate();
+ }
+ mCellIsMobile = false;
+ mIsMobileScrolling = false;
+ mActivePointerId = INVALID_POINTER_ID;
+ }
+
+ /**
+ * This TypeEvaluator is used to animate the BitmapDrawable back to its
+ * final location when the user lifts his finger by modifying the
+ * BitmapDrawable's bounds.
+ */
+ private final static TypeEvaluator<Rect> sBoundEvaluator = new TypeEvaluator<Rect>() {
+ public Rect evaluate(float fraction, Rect startValue, Rect endValue) {
+ return new Rect(interpolate(startValue.left, endValue.left, fraction),
+ interpolate(startValue.top, endValue.top, fraction),
+ interpolate(startValue.right, endValue.right, fraction),
+ interpolate(startValue.bottom, endValue.bottom, fraction));
+ }
+
+ public int interpolate(int start, int end, float fraction) {
+ return (int)(start + fraction * (end - start));
+ }
+ };
+
+ /**
+ * Determines whether this listview is in a scrolling state invoked
+ * by the fact that the hover cell is out of the bounds of the listview;
+ */
+ private void handleMobileCellScroll() {
+ mIsMobileScrolling = handleMobileCellScroll(mHoverCellCurrentBounds);
+ }
+
+ /**
+ * This method is in charge of determining if the hover cell is above
+ * or below the bounds of the listview. If so, the listview does an appropriate
+ * upward or downward smooth scroll so as to reveal new items.
+ */
+ public boolean handleMobileCellScroll(Rect r) {
+ int offset = computeVerticalScrollOffset();
+ int height = getHeight();
+ int extent = computeVerticalScrollExtent();
+ int range = computeVerticalScrollRange();
+ int hoverViewTop = r.top;
+ int hoverHeight = r.height();
+
+ if (hoverViewTop <= 0 && offset > 0) {
+ smoothScrollBy(-mSmoothScrollAmountAtEdge, 0);
+ return true;
+ }
+
+ if (hoverViewTop + hoverHeight >= height && (offset + extent) < range) {
+ smoothScrollBy(mSmoothScrollAmountAtEdge, 0);
+ return true;
+ }
+
+ return false;
+ }
+
+ public void setCheeseList(ArrayList<String> cheeseList) {
+ mCheeseList = cheeseList;
+ }
+
+ /**
+ * This scroll listener is added to the listview in order to handle cell swapping
+ * when the cell is either at the top or bottom edge of the listview. If the hover
+ * cell is at either edge of the listview, the listview will begin scrolling. As
+ * scrolling takes place, the listview continuously checks if new cells became visible
+ * and determines whether they are potential candidates for a cell swap.
+ */
+ private AbsListView.OnScrollListener mScrollListener = new AbsListView.OnScrollListener () {
+
+ private int mPreviousFirstVisibleItem = -1;
+ private int mPreviousVisibleItemCount = -1;
+ private int mCurrentFirstVisibleItem;
+ private int mCurrentVisibleItemCount;
+ private int mCurrentScrollState;
+
+ public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
+ int totalItemCount) {
+ mCurrentFirstVisibleItem = firstVisibleItem;
+ mCurrentVisibleItemCount = visibleItemCount;
+
+ mPreviousFirstVisibleItem = (mPreviousFirstVisibleItem == -1) ? mCurrentFirstVisibleItem
+ : mPreviousFirstVisibleItem;
+ mPreviousVisibleItemCount = (mPreviousVisibleItemCount == -1) ? mCurrentVisibleItemCount
+ : mPreviousVisibleItemCount;
+
+ checkAndHandleFirstVisibleCellChange();
+ checkAndHandleLastVisibleCellChange();
+
+ mPreviousFirstVisibleItem = mCurrentFirstVisibleItem;
+ mPreviousVisibleItemCount = mCurrentVisibleItemCount;
+ }
+
+ @Override
+ public void onScrollStateChanged(AbsListView view, int scrollState) {
+ mCurrentScrollState = scrollState;
+ mScrollState = scrollState;
+ isScrollCompleted();
+ }
+
+ /**
+ * This method is in charge of invoking 1 of 2 actions. Firstly, if the listview
+ * is in a state of scrolling invoked by the hover cell being outside the bounds
+ * of the listview, then this scrolling event is continued. Secondly, if the hover
+ * cell has already been released, this invokes the animation for the hover cell
+ * to return to its correct position after the listview has entered an idle scroll
+ * state.
+ */
+ private void isScrollCompleted() {
+ if (mCurrentVisibleItemCount > 0 && mCurrentScrollState == SCROLL_STATE_IDLE) {
+ if (mCellIsMobile && mIsMobileScrolling) {
+ handleMobileCellScroll();
+ } else if (mIsWaitingForScrollFinish) {
+ touchEventsEnded();
+ }
+ }
+ }
+
+ /**
+ * Determines if the listview scrolled up enough to reveal a new cell at the
+ * top of the list. If so, then the appropriate parameters are updated.
+ */
+ public void checkAndHandleFirstVisibleCellChange() {
+ if (mCurrentFirstVisibleItem != mPreviousFirstVisibleItem) {
+ if (mCellIsMobile && mMobileItemId != INVALID_ID) {
+ updateNeighborViewsForID(mMobileItemId);
+ handleCellSwitch();
+ }
+ }
+ }
+
+ /**
+ * Determines if the listview scrolled down enough to reveal a new cell at the
+ * bottom of the list. If so, then the appropriate parameters are updated.
+ */
+ public void checkAndHandleLastVisibleCellChange() {
+ int currentLastVisibleItem = mCurrentFirstVisibleItem + mCurrentVisibleItemCount;
+ int previousLastVisibleItem = mPreviousFirstVisibleItem + mPreviousVisibleItemCount;
+ if (currentLastVisibleItem != previousLastVisibleItem) {
+ if (mCellIsMobile && mMobileItemId != INVALID_ID) {
+ updateNeighborViewsForID(mMobileItemId);
+ handleCellSwitch();
+ }
+ }
+ }
+ };
+}
\ No newline at end of file
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/ListViewDraggingAnimation.java b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/ListViewDraggingAnimation.java
new file mode 100644
index 0000000..496e49d
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/ListViewDraggingAnimation.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2013 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.listviewdragginganimation;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.ListView;
+
+import java.util.ArrayList;
+
+/**
+ * This application creates a listview where the ordering of the data set
+ * can be modified in response to user touch events.
+ *
+ * An item in the listview is selected via a long press event and is then
+ * moved around by tracking and following the movement of the user's finger.
+ * When the item is released, it animates to its new position within the listview.
+ */
+public class ListViewDraggingAnimation extends Activity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_list_view);
+
+ ArrayList<String>mCheeseList = new ArrayList<String>();
+ for (int i = 0; i < Cheeses.sCheeseStrings.length; ++i) {
+ mCheeseList.add(Cheeses.sCheeseStrings[i]);
+ }
+
+ StableArrayAdapter adapter = new StableArrayAdapter(this, R.layout.text_view, mCheeseList);
+ DynamicListView listView = (DynamicListView) findViewById(R.id.listview);
+
+ listView.setCheeseList(mCheeseList);
+ listView.setAdapter(adapter);
+ listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
+ }
+}
diff --git a/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/StableArrayAdapter.java b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/StableArrayAdapter.java
new file mode 100644
index 0000000..9146cca
--- /dev/null
+++ b/samples/devbytes/animation/ListViewDraggingAnimation/src/com/example/android/listviewdragginganimation/StableArrayAdapter.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2013 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.listviewdragginganimation;
+
+import android.content.Context;
+import android.widget.ArrayAdapter;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class StableArrayAdapter extends ArrayAdapter<String> {
+
+ final int INVALID_ID = -1;
+
+ HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
+
+ public StableArrayAdapter(Context context, int textViewResourceId, List<String> objects) {
+ super(context, textViewResourceId, objects);
+ for (int i = 0; i < objects.size(); ++i) {
+ mIdMap.put(objects.get(i), i);
+ }
+ }
+
+ @Override
+ public long getItemId(int position) {
+ if (position < 0 || position >= mIdMap.size()) {
+ return INVALID_ID;
+ }
+ String item = getItem(position);
+ return mIdMap.get(item);
+ }
+
+ @Override
+ public boolean hasStableIds() {
+ return true;
+ }
+}
