Add Shared Preferences plugin.

packages/shared-preferences/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+.atom/
+.idea
+.packages
+.pub/
+build/
+ios/.generated/
+packages
+pubspec.lock

packages/shared-preferences/LICENSE

@@ -0,0 +1,26 @@
+Copyright 2017, the Flutter project authors. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

packages/shared-preferences/README.md

@@ -0,0 +1,36 @@
+# shared_preferences
+
+Wraps NSUserDefaults (on iOS) and SharedPreferences (on Android), providing
+a persistent store for simple data. Data is persisted to disk automatically
+and asynchronously.
+
+## Usage
+To use this plugin, add shared_preferences as a [dependency in your pubspec.yaml file](https://flutter.io/platform-plugins/).
+
+### Example
+
+``` dart
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  runApp(new MaterialApp(
+    home: new Scaffold(
+      body: new Center(
+      child: new RaisedButton(
+        onPressed: _incrementCounter,
+        child: new Text('Increment Counter'),
+        ),
+      ),
+    ),
+  ));
+}
+
+_incrementCounter() async {
+  SharedPreferences prefs = await SharedPreferences.getInstance();
+  int counter = (prefs.getInt('counter') ?? 0) + 1;
+  print('Pressed $counter times.');
+  prefs.setInt('counter', counter);
+}
+```
+

packages/shared-preferences/android/.gitignore

@@ -0,0 +1,12 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+
+/gradle
+/gradlew
+/gradlew.bat

packages/shared-preferences/android/build.gradle

@@ -0,0 +1,32 @@
+group 'io.flutter.plugins.shared_preferences'
+version '1.0-SNAPSHOT'
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.3.0'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion '25.0.0'
+
+    defaultConfig {
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+}

packages/shared-preferences/android/gradle.properties

@@ -0,0 +1 @@
+org.gradle.jvmargs=-Xmx1536M

packages/shared-preferences/android/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'shared_preferences'

packages/shared-preferences/android/src/main/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="io.flutter.plugins.shared_preferences"
+  android:versionCode="1"
+  android:versionName="0.0.1">
+
+  <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
+</manifest>

packages/shared-preferences/android/src/main/java/io/flutter/plugins/shared_preferences/SharedPreferencesPlugin.java

@@ -0,0 +1,92 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package io.flutter.plugins.shared_preferences;
+
+import android.content.Context;
+import io.flutter.app.FlutterActivity;
+import io.flutter.plugin.common.MethodChannel;
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
+import io.flutter.plugin.common.MethodChannel.Result;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.view.FlutterView;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * SharedPreferencesPlugin
+ */
+public class SharedPreferencesPlugin implements MethodCallHandler {
+  private static final String SHARED_PREFERENCES_NAME = "FlutterSharedPreferences";
+  private static final String CHANNEL_NAME = "plugins.flutter.io/shared_preferences";
+
+  private final android.content.SharedPreferences preferences;
+  private final android.content.SharedPreferences.Editor editor;
+
+  public static SharedPreferencesPlugin register(FlutterActivity activity) {
+    return new SharedPreferencesPlugin(activity);
+  }
+
+  private SharedPreferencesPlugin(FlutterActivity activity) {
+    preferences = activity.getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE);
+    editor = preferences.edit();
+    new MethodChannel(activity.getFlutterView(), CHANNEL_NAME).setMethodCallHandler(this);
+  }
+
+  // Filter preferences to only those set by the flutter app.
+  private Map<String, Object> getAllPrefs() {
+    Map<String, ?> allPrefs = preferences.getAll();
+    Map<String, Object> filteredPrefs = new HashMap<>();
+    for (String key : allPrefs.keySet()) {
+      if (key.startsWith("flutter.")) {
+        filteredPrefs.put(key, allPrefs.get(key));
+      }
+    }
+    return filteredPrefs;
+  }
+
+  @Override
+  public void onMethodCall(MethodCall call, MethodChannel.Result result) {
+    String key = call.argument("key");
+    switch (call.method) {
+      case "setBool":
+        editor.putBoolean(key, (boolean) call.argument("value")).apply();
+        result.success(null);
+        break;
+      case "setDouble":
+        editor.putFloat(key, (float) call.argument("value")).apply();
+        result.success(null);
+        break;
+      case "setInt":
+        editor.putInt(key, (int) call.argument("value")).apply();
+        result.success(null);
+        break;
+      case "setString":
+        editor.putString(key, (String) call.argument("value")).apply();
+        result.success(null);
+        break;
+      case "setStringSet":
+        editor.putStringSet(key, new HashSet<>((List<String>) call.argument("value"))).apply();
+        result.success(null);
+        break;
+      case "commit":
+        result.success(editor.commit());
+        break;
+      case "getAll":
+        result.success(getAllPrefs());
+        break;
+      case "clear":
+        for (String keyToDelete : getAllPrefs().keySet()) {
+          editor.remove(keyToDelete);
+        }
+        result.success(editor.commit());
+        break;
+      default:
+        result.notImplemented();
+        break;
+    }
+  }
+}

packages/shared-preferences/example/.gitignore

@@ -0,0 +1,10 @@
+.DS_Store
+.atom/
+.idea
+.packages
+.pub/
+build/
+ios/.generated/
+packages
+pubspec.lock
+.flutter-plugins

packages/shared-preferences/example/README.md

@@ -0,0 +1,8 @@
+# shared_preferences_example
+
+Demonstrates how to use the shared_preferences plugin.
+
+## Getting Started
+
+For help getting started with Flutter, view our online
+[documentation](http://flutter.io/).

packages/shared-preferences/example/android.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/android">
+      <sourceFolder url="file://$MODULE_DIR$/android/app/src/main/java" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 25 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Flutter for Android" level="project" />
+  </component>
+</module>

packages/shared-preferences/example/android/.gitignore

@@ -0,0 +1,13 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+PluginRegistry.java
+
+/gradle
+/gradlew
+/gradlew.bat

packages/shared-preferences/example/android/app/build.gradle

@@ -0,0 +1,49 @@
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withInputStream { stream ->
+        localProperties.load(stream)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+apply plugin: 'com.android.application'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion '25.0.2'
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.yourcompany.shared_preferences_example"
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    androidTestCompile 'com.android.support:support-annotations:25.0.0'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
+}

packages/shared-preferences/example/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,32 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.yourcompany.shared_preferences_example"
+    android:versionCode="1"
+    android:versionName="0.0.1">
+
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
+
+    <!-- The INTERNET permission is required for development. Specifically,
+         flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+
+    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
+         calls FlutterMain.startInitialization(this); in its onCreate method.
+         In most cases you can leave this as-is, but you if you want to provide
+         additional functionality it is fine to subclass or reimplement
+         FlutterApplication and put your custom class here. -->
+    <application android:name="io.flutter.app.FlutterApplication" android:label="shared_preferences_example" android:icon="@mipmap/ic_launcher">
+        <activity android:name=".MainActivity"
+                  android:launchMode="singleTop"
+                  android:theme="@android:style/Theme.Black.NoTitleBar"
+                  android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
+                  android:hardwareAccelerated="true"
+                  android:windowSoftInputMode="adjustResize">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>

packages/shared-preferences/example/android/app/src/main/java/com/yourcompany/shared_preferences_example/MainActivity.java

@@ -0,0 +1,16 @@
+package com.yourcompany.shared_preferences_example;
+
+import android.os.Bundle;
+import io.flutter.app.FlutterActivity;
+import io.flutter.plugins.PluginRegistry;
+
+public class MainActivity extends FlutterActivity {
+    PluginRegistry pluginRegistry;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        pluginRegistry = new PluginRegistry();
+        pluginRegistry.registerAll(this);
+    }
+}