week 10

Week_09_Services_and_wearables/MyBoundServices/.gitignore

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

Week_09_Services_and_wearables/MyBoundServices/app/.gitignore

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+/build

Week_09_Services_and_wearables/MyBoundServices/app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion "26.0.0"
+    defaultConfig {
+        applicationId "com.example.jianhuayang.myboundservices"
+        minSdkVersion 15
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:26.+'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    testCompile 'junit:junit:4.12'
+}

Week_09_Services_and_wearables/MyBoundServices/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/jianhuayang/Library/Android/sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

Week_09_Services_and_wearables/MyBoundServices/app/src/androidTest/java/com/example/jianhuayang/myboundservices/ExampleInstrumentedTest.java

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+package com.example.jianhuayang.myboundservices;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.example.jianhuayang.myboundservices", appContext.getPackageName());
+    }
+}

Week_09_Services_and_wearables/MyBoundServices/app/src/main/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.jianhuayang.myboundservices">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+
+        <service
+            android:name=".LocalService"
+            android:enabled="true"
+            android:exported="true">
+        </service>
+    </application>
+
+</manifest>

Week_09_Services_and_wearables/MyBoundServices/app/src/main/java/com/example/jianhuayang/myboundservices/LocalService.java

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+package com.example.jianhuayang.myboundservices;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.Binder;
+import android.os.IBinder;
+
+import java.util.Random;
+
+/**
+ * Created by jianhuayang on 18/11/2017.
+ */
+
+public class LocalService extends Service {
+    // Binder given to clients
+    private final IBinder mBinder = new LocalBinder();
+    // Random number generator
+    private final Random mGenerator = new Random();
+
+    /**
+     * Class used for the client Binder.  Because we know this service always
+     * runs in the same process as its clients, we don't need to deal with IPC.
+     */
+    public class LocalBinder extends Binder {
+        LocalService getService() {
+            // Return this instance of LocalService so clients can call public methods
+            return LocalService.this;
+        }
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
+
+    /** method for clients */
+    public int getRandomNumber() {
+        return mGenerator.nextInt(100);
+    }
+}

Week_09_Services_and_wearables/MyBoundServices/app/src/main/java/com/example/jianhuayang/myboundservices/MainActivity.java

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+package com.example.jianhuayang.myboundservices;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.support.v7.app.AppCompatActivity;
+import android.view.View;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+
+    LocalService mService;
+    boolean mBound = false;
+    /**
+     * Defines callbacks for service binding, passed to bindService()
+     */
+    private ServiceConnection mConnection = new ServiceConnection() {
+
+        @Override
+        public void onServiceConnected(ComponentName className,
+                                       IBinder service) {
+            // We've bound to LocalService, cast the IBinder and get LocalService instance
+            LocalService.LocalBinder binder = (LocalService.LocalBinder) service;
+            mService = binder.getService();
+            mBound = true;
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName arg0) {
+            mBound = false;
+        }
+    };
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        // Bind to LocalService
+        Intent intent = new Intent(this, LocalService.class);
+        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        unbindService(mConnection);
+        mBound = false;
+    }
+
+    /**
+     * Called when a button is clicked (the button in the layout file attaches to
+     * this method with the android:onClick attribute)
+     */
+    public void onButtonClick(View v) {
+        if (mBound) {
+            // Call a method from the LocalService.
+            // However, if this call were something that might hang, then this request should
+            // occur in a separate thread to avoid slowing down the activity performance.
+            int num = mService.getRandomNumber();
+            Toast.makeText(this, "number: " + num, Toast.LENGTH_SHORT).show();
+        }
+    }
+}
+

Week_09_Services_and_wearables/MyBoundServices/app/src/main/res/layout/activity_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.example.jianhuayang.myboundservices.MainActivity">
+
+
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Button"
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_marginTop="8dp"
+        android:layout_marginLeft="8dp"
+        android:onClick="onButtonClick"
+        app:layout_constraintLeft_toLeftOf="parent"/>
+
+</android.support.constraint.ConstraintLayout>

Week_09_Services_and_wearables/MyBoundServices/app/src/main/res/values/colors.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#FF4081</color>
+</resources>

Week_09_Services_and_wearables/MyBoundServices/app/src/main/res/values/strings.xml

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+<resources>
+    <string name="app_name">My Bound Services</string>
+</resources>