Standalone battery info app

Just a standalone battery info app that gives the health and percentage
of the battery of the phone. Will work on merging this into the main
RoboApp

BatteryInformation/.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

BatteryInformation/app/.gitignore

@@ -0,0 +1 @@
+/build

BatteryInformation/app/build.gradle

@@ -0,0 +1,29 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 24
+    buildToolsVersion "24.0.2"
+    defaultConfig {
+        applicationId "com.roboapp.batteryinformation"
+        minSdkVersion 15
+        targetSdkVersion 24
+        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-v7:24.2.1'
+    testCompile 'junit:junit:4.12'
+}

BatteryInformation/app/proguard-rules.pro

@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\Users\Zach\AppData\Local\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 *;
+#}

BatteryInformation/app/src/main/AndroidManifest.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.roboapp.batteryinformation">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        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>
+    </application>
+
+</manifest>

BatteryInformation/app/src/main/java/com/roboapp/batteryinformation/MainActivity.java

@@ -0,0 +1,137 @@
+package com.roboapp.batteryinformation;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.BatteryManager;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.Window;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+
+public class MainActivity extends AppCompatActivity {
+    private Context mContext;
+
+    private TextView mTextViewInfo;
+    private TextView mTextViewPercentage;
+    private ProgressBar mProgressBar;
+
+    private int mProgressStatus = 0;
+
+    /*
+        BroadcastReceiver
+            Base class for code that will receive intents sent by sendBroadcast().
+
+            You can either dynamically register an instance of this class with
+            Context.registerReceiver() or statically publish an implementation through
+            the <receiver> tag in your AndroidManifest.xml.
+    */
+    // Initialize a new BroadcastReceiver instance
+    private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            /*
+                BatteryManager
+                    The BatteryManager class contains strings and constants used for values in the
+                    ACTION_BATTERY_CHANGED Intent, and provides a method for querying battery
+                    and charging properties.
+            */
+            /*
+                public static final String EXTRA_SCALE
+                    Extra for ACTION_BATTERY_CHANGED: integer containing the maximum battery level.
+                    Constant Value: "scale"
+            */
+            // Get the battery scale
+            int scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE,-1);
+            // Display the battery scale in TextView
+            mTextViewInfo.setText("Battery Scale : " + scale);
+
+            /*
+                public static final String EXTRA_LEVEL
+                    Extra for ACTION_BATTERY_CHANGED: integer field containing the current battery
+                    level, from 0 to EXTRA_SCALE.
+
+                    Constant Value: "level"
+            */
+            // get the battery level
+            int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL,-1);
+            // Display the battery level in TextView
+            mTextViewInfo.setText(mTextViewInfo.getText() + "\nBattery Level : " + level);
+
+            // Calculate the battery charged percentage
+            float percentage = level/ (float) scale;
+            // Update the progress bar to display current battery charged percentage
+            mProgressStatus = (int)((percentage)*100);
+
+            // Show the battery charged percentage text inside progress bar
+            mTextViewPercentage.setText("" + mProgressStatus + "%");
+
+            // Show the battery charged percentage in TextView
+            mTextViewInfo.setText(mTextViewInfo.getText() +
+                    "\nPercentage : "+ mProgressStatus + "%");
+
+            // Display the battery charged percentage in progress bar
+            mProgressBar.setProgress(mProgressStatus);
+        }
+    };
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        // Request window feature action bar
+        requestWindowFeature(Window.FEATURE_ACTION_BAR);
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        // Get the application context
+        mContext = getApplicationContext();
+
+        /*
+            IntentFilter
+                Structured description of Intent values to be matched. An IntentFilter can match
+                against actions, categories, and data (either via its type, scheme, and/or path) in
+                an Intent. It also includes a "priority" value which is used to order multiple
+                matching filters.
+
+                IntentFilter objects are often created in XML as part of a package's
+                AndroidManifest.xml file, using intent-filter tags.
+        */
+        /*
+            public IntentFilter (String action)
+                New IntentFilter that matches a single action with no data. If no data
+                characteristics are subsequently specified, then the filter will only match intents
+                that contain no data.
+
+            Parameters
+                action : The action to match, i.e. Intent.ACTION_MAIN.
+        */
+        // Initialize a new IntentFilter instance
+        IntentFilter iFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
+
+        /*
+            public abstract Intent registerReceiver (BroadcastReceiver receiver, IntentFilter filter)
+                Register a BroadcastReceiver to be run in the main activity thread. The receiver will
+                be called with any broadcast Intent that matches filter, in the main application thread.
+
+                The system may broadcast Intents that are "sticky" -- these stay around after the
+                broadcast as finished, to be sent to any later registrations. If your IntentFilter
+                matches one of these sticky Intents, that Intent will be returned by this function
+                and sent to your receiver as if it had just been broadcast.
+
+        Parameters
+            receiver : The BroadcastReceiver to handle the broadcast.
+            filter : Selects the Intent broadcasts to be received.
+        Returns
+            The first sticky intent found that matches filter, or null if there are none.
+        */
+        // Register the broadcast receiver
+        mContext.registerReceiver(mBroadcastReceiver,iFilter);
+
+        // Get the widgets reference from XML layout
+        mTextViewInfo = (TextView) findViewById(R.id.tv_info);
+        mTextViewPercentage = (TextView) findViewById(R.id.tv_percentage);
+        mProgressBar = (ProgressBar) findViewById(R.id.pb);
+    }
+}

BatteryInformation/app/src/main/res/drawable/progressbar_states.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@android:id/background">
+        <shape
+            android:shape="oval">
+            <stroke
+                android:width="5dp"
+                android:color="#d0d4d7"
+                />
+            <solid android:color="#eef2f5"/>
+        </shape>
+    </item>
+    <item android:id="@android:id/progress">
+        <clip android:clipOrientation="vertical" android:gravity="bottom">
+            <shape
+                android:shape="oval">
+                <stroke
+                    android:width="5dp"
+                    android:color="#ff0001"
+                    />
+                <gradient
+                    android:startColor="#7fc97c"
+                    android:endColor="#99f396"
+                    android:centerColor="#89e386"
+                    android:angle="270"
+                    android:gradientRadius="50"
+                    android:centerY=".50"
+                    />
+            </shape>
+        </clip>
+    </item>
+</layer-list>