Add macos and example

packages/shared_preferences/shared_preferences_macos/LICENSE

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+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/shared_preferences_macos/README.md

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+# shared_preferences_macos
+
+The macos implementation of [`shared_preferences`][1].
+
+## Usage
+
+### Import the package
+
+To use this plugin in your Flutter app, simply add it as a dependency in
+your `pubspec.yaml` alongside the base `shared_preferences` plugin.
+
+_(This is only temporary: in the future we hope to make this package an
+"endorsed" implementation of `shared_preferences`, so that it is automatically
+included in your Flutter app when you depend on `package:shared_preferences`.)_
+
+This is what the above means to your `pubspec.yaml`:
+
+```yaml
+...
+dependencies:
+  ...
+  shared_preferences: ^0.5.4+8
+  shared_preferences_macos: ^0.1.0
+  ...
+```
+
+### Use the plugin
+
+Once you have the `shared_preferences_macos` dependency in your pubspec, you should
+be able to use `package:shared_preferences` as normal.
+
+[1]: ../shared_preferences/shared_preferences_macos

packages/shared_preferences/shared_preferences_macos/android/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures

packages/shared_preferences/shared_preferences_macos/android/build.gradle

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+group 'com.example.shared_preferences'
+version '1.0'
+
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.5.0'
+    }
+}
+
+rootProject.allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 28
+
+    defaultConfig {
+        minSdkVersion 16
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+    dependencies {
+        implementation 'androidx.annotation:annotation:1.0.0'
+    }
+}

packages/shared_preferences/shared_preferences_macos/android/gradle.properties

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+org.gradle.jvmargs=-Xmx1536M
+android.enableR8=true
+android.useAndroidX=true
+android.enableJetifier=true

packages/shared_preferences/shared_preferences_macos/android/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

packages/shared_preferences/shared_preferences_macos/android/settings.gradle

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+rootProject.name = 'shared_preferences'

packages/shared_preferences/shared_preferences_macos/android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.example.shared_preferences">
+</manifest>

packages/shared_preferences/shared_preferences_macos/android/src/main/java/com/example/shared_preferences/SharedPreferencesPlugin.java

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+package com.example.shared_preferences;
+
+import androidx.annotation.NonNull;
+import io.flutter.embedding.engine.plugins.FlutterPlugin;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
+import io.flutter.plugin.common.MethodChannel.Result;
+import io.flutter.plugin.common.PluginRegistry.Registrar;
+
+/** SharedPreferencesPlugin */
+public class SharedPreferencesPlugin implements FlutterPlugin, MethodCallHandler {
+  @Override
+  public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {}
+
+  public static void registerWith(Registrar registrar) {}
+
+  @Override
+  public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {}
+
+  @Override
+  public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {}
+}

packages/shared_preferences/shared_preferences_macos/example/README.md

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+# 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/shared_preferences_macos/example/android/app/build.gradle

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+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+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.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 28
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        applicationId "io.flutter.plugins.sharedpreferencesexample"
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    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 {
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+}

packages/shared_preferences/shared_preferences_macos/example/android/app/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

packages/shared_preferences/shared_preferences_macos/example/android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="io.flutter.plugins.sharedpreferencesexample">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+
+    <application android:name="io.flutter.app.FlutterApplication" android:label="shared_preferences_example" android:icon="@mipmap/ic_launcher">
+        <activity android:name=".EmbeddingV1Activity"
+                  android:launchMode="singleTop"
+                  android:theme="@android:style/Theme.Black.NoTitleBar"
+                  android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
+                  android:hardwareAccelerated="true"
+                  android:windowSoftInputMode="adjustResize">
+        </activity>
+        <activity android:name=".MainActivity"
+            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/shared_preferences_macos/example/android/app/src/main/java/io/flutter/plugins/sharedpreferencesexample/EmbeddingV1Activity.java

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+// 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.sharedpreferencesexample;
+
+import android.os.Bundle;
+import io.flutter.app.FlutterActivity;
+import io.flutter.plugins.GeneratedPluginRegistrant;
+
+public class EmbeddingV1Activity extends FlutterActivity {
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    GeneratedPluginRegistrant.registerWith(this);
+  }
+}

packages/shared_preferences/shared_preferences_macos/example/android/app/src/main/java/io/flutter/plugins/sharedpreferencesexample/EmbeddingV1ActivityTest.java

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+
+package io.flutter.plugins.sharedpreferencesexample;
+
+import androidx.test.rule.ActivityTestRule;
+import dev.flutter.plugins.e2e.FlutterRunner;
+import org.junit.Rule;
+import org.junit.runner.RunWith;
+
+@RunWith(FlutterRunner.class)
+public class EmbeddingV1ActivityTest {
+  @Rule
+  public ActivityTestRule<EmbeddingV1Activity> rule =
+      new ActivityTestRule<>(EmbeddingV1Activity.class);
+}

packages/shared_preferences/shared_preferences_macos/example/android/app/src/main/java/io/flutter/plugins/sharedpreferencesexample/MainActivity.java

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+// Copyright 2019 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.sharedpreferencesexample;
+
+import io.flutter.embedding.android.FlutterActivity;
+import io.flutter.embedding.engine.FlutterEngine;
+import io.flutter.plugins.sharedpreferences.SharedPreferencesPlugin;
+
+public class MainActivity extends FlutterActivity {
+  // TODO(cyanglaz): Remove this once v2 of GeneratedPluginRegistrant rolls to stable.
+  // https://github.com/flutter/flutter/issues/42694
+  @Override
+  public void configureFlutterEngine(FlutterEngine flutterEngine) {
+    super.configureFlutterEngine(flutterEngine);
+    flutterEngine.getPlugins().add(new SharedPreferencesPlugin());
+  }
+}

packages/shared_preferences/shared_preferences_macos/example/android/app/src/main/java/io/flutter/plugins/sharedpreferencesexample/MainActivityTest.java

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+// Copyright 2019 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.sharedpreferencesexample;
+
+import androidx.test.rule.ActivityTestRule;
+import dev.flutter.plugins.e2e.FlutterRunner;
+import org.junit.Rule;
+import org.junit.runner.RunWith;
+
+@RunWith(FlutterRunner.class)
+public class MainActivityTest {
+  @Rule public ActivityTestRule<MainActivity> rule = new ActivityTestRule<>(MainActivity.class);
+}

packages/shared_preferences/shared_preferences_macos/example/android/build.gradle

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+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.4.0'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

packages/shared_preferences/shared_preferences_macos/example/android/gradle.properties

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+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true
+android.enableR8=true

packages/shared_preferences/shared_preferences_macos/example/android/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip

packages/shared_preferences/shared_preferences_macos/example/android/settings.gradle

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+include ':app'
+
+def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+
+def plugins = new Properties()
+def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
+if (pluginsFile.exists()) {
+    pluginsFile.withInputStream { stream -> plugins.load(stream) }
+}
+
+plugins.each { name, path ->
+    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
+    include ":$name"
+    project(":$name").projectDir = pluginDirectory
+}