[DON'T MERGE] Lesson 28 review

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 22
+    buildToolsVersion "22.0.1"
+
+    defaultConfig {
+        applicationId "com.example.batterystatus"
+        minSdkVersion 17
+        targetSdkVersion 22
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    testCompile 'junit:junit:4.12'
+    compile 'com.android.support:appcompat-v7:22.2.1'
+}

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/nanao/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 *;
+#}

app/src/androidTest/java/com/example/batterystatus/ApplicationTest.java

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+package com.example.batterystatus;
+
+import android.app.Application;
+import android.test.ApplicationTestCase;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+public class ApplicationTest extends ApplicationTestCase<Application> {
+    public ApplicationTest() {
+        super(Application.class);
+    }
+}

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.batterystatus" >
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <service android:name=".BatteryWatchService">
+        </service>
+    </application>
+
+</manifest>

app/src/main/java/com/example/batterystatus/BatteryWatchService.java

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+package com.example.batterystatus;
+
+import android.app.Service;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.BatteryManager;
+import android.os.IBinder;
+import android.util.Log;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+public class BatteryWatchService extends Service {
+    static String TAG = "BatteryWatchService";
+    private Timer timer;
+
+    public BatteryWatchService() {
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        Log.d(TAG, "onBind");
+        return null;
+    }
+
+    @Override public void onCreate() {
+        super.onCreate();
+        Log.d(TAG, "onCreate");
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        Log.d(TAG, "onStartCommand");
+        timer = new Timer();
+        timer.schedule(new TimerTask() {
+            @Override
+            public void run() {
+                IntentFilter intentfilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
+                Intent batteryStatus = registerReceiver(null, intentfilter);
+
+                if (batteryStatus!=null) {
+                    int batteryLevel = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
+                    Log.d(TAG, "Level: " + String.valueOf(batteryLevel));
+                }
+            }
+        }, 0, 5000);
+
+        return START_STICKY;
+    }
+
+    @Override public void onDestroy() {
+        Log.d(TAG, "onDestroy");
+        timer.cancel();
+
+        super.onDestroy();
+    }
+}

app/src/main/java/com/example/batterystatus/MainActivity.java

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+package com.example.batterystatus;
+
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        Button startButton = (Button) findViewById(R.id.start_button);
+        Button stopButton = (Button) findViewById(R.id.stop_button);
+
+        startButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startService(new Intent(getApplicationContext(), BatteryWatchService.class));
+            }
+        });
+        stopButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                stopService(new Intent(getApplicationContext(), BatteryWatchService.class));
+            }
+        });
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+}

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

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+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
+    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
+
+    <Button
+        android:id="@+id/start_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Start"/>
+    <Button
+        android:layout_below="@id/start_button"
+        android:id="@+id/stop_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Stop"/>
+
+</RelativeLayout>

app/src/main/res/menu/menu_main.xml

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+<menu 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" tools:context=".MainActivity">
+    <item android:id="@+id/action_settings" android:title="@string/action_settings"
+        android:orderInCategory="100" app:showAsAction="never" />
+</menu>

app/src/main/res/values-w820dp/dimens.xml

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+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>

app/src/main/res/values/dimens.xml

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+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>

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

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+<resources>
+    <string name="app_name">BatteryStatus</string>
+
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+</resources>

app/src/main/res/values/styles.xml

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+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+    </style>
+
+</resources>