[init] Initial content

.gitignore

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+.DS_Store
+local.properties
+**/*.iml
+.gradle
+.idea/
+.externalNativeBuild
+build

PyTorchDemoApp/.gitignore

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+.DS_Store
+local.properties
+**/*.iml
+.gradle
+.idea/
+.externalNativeBuild
+build

PyTorchDemoApp/app/.gitignore

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+/build

PyTorchDemoApp/app/build.gradle

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+apply plugin: 'com.android.application'
+
+repositories {
+    maven {
+        url "https://oss.sonatype.org/content/repositories/snapshots"
+    }
+}
+
+android {
+    compileOptions {
+        sourceCompatibility 1.8
+        targetCompatibility 1.8
+    }
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "org.pytorch.demo"
+        minSdkVersion 21
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation "androidx.camera:camera-core:1.0.0-alpha05"
+    implementation 'com.google.android.material:material:1.0.0-beta01'
+
+    implementation 'org.pytorch:pytorch_android:0.0.8-SNAPSHOT'
+    implementation 'org.pytorch:pytorch_android_torchvision:0.0.8-SNAPSHOT'
+}

PyTorchDemoApp/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="org.pytorch.demo">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme.NoActionBar">
+        <activity
+            android:name=".WelcomeActivity"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity android:name=".MainActivity"></activity>
+        <activity android:name=".vision.VisionListActivity" />
+        <activity android:name=".nlp.NLPListActivity" />
+        <activity
+            android:name=".vision.ImageClassificationActivity"
+            android:label="@string/image_classification_title"></activity>
+        <activity android:name=".nlp.TextClassificationActivity" />
+
+    </application>
+
+    <uses-permission android:name="android.permission.CAMERA" />
+
+</manifest>

PyTorchDemoApp/app/src/main/java/org/pytorch/demo/AbstractListActivity.java

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+package org.pytorch.demo;
+
+import android.os.Bundle;
+import android.view.ViewStub;
+
+import androidx.annotation.LayoutRes;
+import androidx.appcompat.app.AppCompatActivity;
+
+public abstract class AbstractListActivity extends AppCompatActivity {
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setContentView(R.layout.activity_list_stub);
+    findViewById(R.id.list_back).setOnClickListener(v -> finish());
+    final ViewStub listContentStub = findViewById(R.id.list_content_stub);
+    listContentStub.setLayoutResource(getListContentLayoutRes());
+    listContentStub.inflate();
+  }
+
+  protected abstract @LayoutRes
+  int getListContentLayoutRes();
+}

PyTorchDemoApp/app/src/main/java/org/pytorch/demo/BaseModuleActivity.java

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+package org.pytorch.demo;
+
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+
+import androidx.annotation.Nullable;
+import androidx.annotation.UiThread;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+public class BaseModuleActivity extends AppCompatActivity {
+  private static final int UNSET = 0;
+
+  protected HandlerThread mBackgroundThread;
+  protected Handler mBackgroundHandler;
+  protected Handler mUIHandler;
+
+  @Override
+  protected void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    mUIHandler = new Handler(getMainLooper());
+  }
+
+  @Override
+  protected void onPostCreate(@Nullable Bundle savedInstanceState) {
+    super.onPostCreate(savedInstanceState);
+    final Toolbar toolbar = findViewById(R.id.toolbar);
+    if (toolbar != null) {
+      setSupportActionBar(toolbar);
+    }
+    startBackgroundThread();
+  }
+
+  protected void startBackgroundThread() {
+    mBackgroundThread = new HandlerThread("ModuleActivity");
+    mBackgroundThread.start();
+    mBackgroundHandler = new Handler(mBackgroundThread.getLooper());
+  }
+
+  @Override
+  protected void onDestroy() {
+    stopBackgroundThread();
+    super.onDestroy();
+  }
+
+  protected void stopBackgroundThread() {
+    mBackgroundThread.quitSafely();
+    try {
+      mBackgroundThread.join();
+      mBackgroundThread = null;
+      mBackgroundHandler = null;
+    } catch (InterruptedException e) {
+      Log.e(Constants.TAG, "Error on stopping background thread", e);
+    }
+  }
+
+  @Override
+  public boolean onCreateOptionsMenu(Menu menu) {
+    getMenuInflater().inflate(R.menu.menu_model, menu);
+    menu.findItem(R.id.action_info).setVisible(getInfoViewCode() != UNSET);
+    return true;
+  }
+
+  @Override
+  public boolean onOptionsItemSelected(MenuItem item) {
+    if (item.getItemId() == R.id.action_info) {
+      onMenuItemInfoSelected();
+    }
+    return super.onOptionsItemSelected(item);
+  }
+
+  protected int getInfoViewCode() {
+    return UNSET;
+  }
+
+  protected String getInfoViewAdditionalText() {
+    return null;
+  }
+
+  private void onMenuItemInfoSelected() {
+    final AlertDialog.Builder builder = new AlertDialog.Builder(this)
+        .setCancelable(true)
+        .setView(InfoViewFactory.newInfoView(this, getInfoViewCode(), getInfoViewAdditionalText()));
+
+    builder.show();
+  }
+
+  @UiThread
+  protected void showErrorDialog(View.OnClickListener clickListener) {
+    final View view = InfoViewFactory.newErrorDialogView(this);
+    view.setOnClickListener(clickListener);
+    final AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.CustomDialog)
+        .setCancelable(false)
+        .setView(view);
+    builder.show();
+  }
+}