Added Android App

ActivityRecognition/.gitignore

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

ActivityRecognition/app/.gitignore

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+/build

ActivityRecognition/app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.1"
+    defaultConfig {
+        applicationId "io.github.aqibsaeed.activityrecognition"
+        minSdkVersion 19
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    sourceSets {
+        main {
+            jniLibs.srcDirs = ['libs']
+        }
+    }
+}
+
+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-v7:25.0.1'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    testCompile 'junit:junit:4.12'
+}

ActivityRecognition/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 C:\Users\aqib_\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 *;
+#}
+
+# 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

ActivityRecognition/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="io.github.aqibsaeed.activityrecognition">
+
+    <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />
+
+    <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>
+
+    </application>
+
+</manifest>

ActivityRecognition/app/src/main/java/io/github/aqibsaeed/activityrecognition/ActivityInference.java

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+package io.github.aqibsaeed.activityrecognition;
+
+import android.content.Context;
+import android.content.res.AssetManager;
+
+import org.tensorflow.contrib.android.TensorFlowInferenceInterface;
+
+
+public class ActivityInference {
+    static {
+        System.loadLibrary("tensorflow_inference");
+    }
+
+    private static ActivityInference activityInferenceInstance;
+    private TensorFlowInferenceInterface inferenceInterface;
+    private static final String MODEL_FILE = "file:///android_asset/optimized_har.pb";
+    private static final String INPUT_NODE = "input";
+    private static final String[] OUTPUT_NODES = {"y_"};
+    private static final String OUTPUT_NODE = "y_";
+    private static final long[] INPUT_SIZE = {1,270};
+    private static final int OUTPUT_SIZE = 6;
+    private static AssetManager assetManager;
+
+    public static ActivityInference getInstance(final Context context)
+    {
+        if (activityInferenceInstance == null)
+        {
+            activityInferenceInstance = new ActivityInference(context);
+        }
+        return activityInferenceInstance;
+    }
+
+    public ActivityInference(final Context context) {
+        this.assetManager = context.getAssets();
+        inferenceInterface = new TensorFlowInferenceInterface(assetManager, MODEL_FILE);
+    }
+
+    public float[] getActivityProb(float[] input_signal)
+    {
+        float[] result = new float[OUTPUT_SIZE];
+        inferenceInterface.feed(INPUT_NODE,input_signal,INPUT_SIZE);
+        inferenceInterface.run(OUTPUT_NODES);
+        inferenceInterface.fetch(OUTPUT_NODE,result);
+        //Downstairs	Jogging	  Sitting	Standing	Upstairs	Walking
+        return result;
+    }
+}