Photo Picker test app using special SDK and gradle

Bug: 192304192
Test: Run on SX SDK emulator from Android Studio
Change-Id: Id275312d259342467492b8f7c909d01ed349cd48

14 files changed, 847 insertions, 0 deletions

diff --git a/tools/photopicker-gradle/app/.gitignore b/tools/photopicker-gradle/app/.gitignore
new file mode 100644
index 000000000..42afabfd2
--- /dev/null
+++ b/tools/photopicker-gradle/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/tools/photopicker-gradle/app/build.gradle b/tools/photopicker-gradle/app/build.gradle
new file mode 100644
index 000000000..255b67ed2
--- /dev/null
+++ b/tools/photopicker-gradle/app/build.gradle
@@ -0,0 +1,34 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdk 30
+    compileSdkVersion 'android-SX'
+
+    defaultConfig {
+        applicationId "com.android.providers.media.tools.photopicker"
+        minSdk 16
+        targetSdk 30
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+}
\ No newline at end of file
diff --git a/tools/photopicker-gradle/app/proguard-rules.pro b/tools/photopicker-gradle/app/proguard-rules.pro
new file mode 100644
index 000000000..481bb4348
--- /dev/null
+++ b/tools/photopicker-gradle/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# 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
\ No newline at end of file
diff --git a/tools/photopicker-gradle/app/src/main/AndroidManifest.xml b/tools/photopicker-gradle/app/src/main/AndroidManifest.xml
new file mode 100644
index 000000000..8ca3d10b8
--- /dev/null
+++ b/tools/photopicker-gradle/app/src/main/AndroidManifest.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.providers.media.tools.photopicker">
+
+    <application
+        android:allowBackup="true"
+        android:label="PhotoPickerTool"
+        android:supportsRtl="true">
+        <activity
+            android:name=".PhotoPickerToolActivity"
+            android:exported="true"
+            android:theme="@style/Theme.MaterialComponents.DayNight">
+            <intent-filter android:label="PhotoPickerTool">
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/tools/photopicker-gradle/app/src/main/java/com/android/providers/media/tools/photopicker/PhotoPickerToolActivity.java b/tools/photopicker-gradle/app/src/main/java/com/android/providers/media/tools/photopicker/PhotoPickerToolActivity.java
new file mode 100644
index 000000000..475c10022
--- /dev/null
+++ b/tools/photopicker-gradle/app/src/main/java/com/android/providers/media/tools/photopicker/PhotoPickerToolActivity.java
@@ -0,0 +1,303 @@
+package com.android.providers.media.tools.photopicker;
+
+import static android.os.Build.VERSION.SDK_INT;
+import static android.provider.MediaStore.ACTION_PICK_IMAGES;
+import static android.provider.MediaStore.EXTRA_PICK_IMAGES_MAX;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.ActivityNotFoundException;
+import android.content.ClipData;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.ext.SdkExtensions;
+import android.provider.MediaStore;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Log;
+import android.view.Gravity;
+import android.view.View;
+import android.widget.Button;
+import android.widget.CheckBox;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.ScrollView;
+import android.widget.TextView;
+import android.widget.VideoView;
+
+import com.google.android.material.snackbar.Snackbar;
+
+public class PhotoPickerToolActivity extends AppCompatActivity {
+
+    private static final String TAG = "PhotoPickerToolActivity";
+    private static final int REQUEST_CODE = 42;
+
+    private int mMaxCount = 10;
+    private boolean mIsShowImageOnly;
+    private boolean mIsShowVideoOnly;
+    private boolean mSetMimeType;
+    private ScrollView mScrollView;
+
+    private CheckBox mSetImageOnlyCheckBox;
+    private CheckBox mSetVideoOnlyCheckBox;
+    private CheckBox mSetMimeTypeCheckBox;
+    private CheckBox mSetSelectionCountCheckBox;
+    private CheckBox mAllowMultipleCheckBox;
+    private CheckBox mGetContentCheckBox;
+    private EditText mMaxCountText;
+    private EditText mMimeTypeText;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        mAllowMultipleCheckBox = findViewById(R.id.cbx_allow_multiple);
+        mGetContentCheckBox = findViewById(R.id.cbx_get_content);
+        mSetImageOnlyCheckBox = findViewById(R.id.cbx_set_image_only);
+        mSetMimeTypeCheckBox = findViewById(R.id.cbx_set_mime_type);
+        mSetSelectionCountCheckBox = findViewById(R.id.cbx_set_selection_count);
+        mSetVideoOnlyCheckBox = findViewById(R.id.cbx_set_video_only);
+        mMaxCountText = findViewById(R.id.edittext_max_count);
+        mMimeTypeText = findViewById(R.id.edittext_mime_type);
+        mScrollView = findViewById(R.id.scrollview);
+
+        mSetImageOnlyCheckBox.setOnCheckedChangeListener(this::onShowImageOnlyCheckedChanged);
+        mSetVideoOnlyCheckBox.setOnCheckedChangeListener(this::onShowVideoOnlyCheckedChanged);
+        mSetMimeTypeCheckBox.setOnCheckedChangeListener(this::onSetMimeTypeCheckedChanged);
+        mSetSelectionCountCheckBox.setOnCheckedChangeListener(
+                this::onSetSelectionCountCheckedChanged);
+
+        mMaxCountText.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                try {
+                    mMaxCount = Integer.parseInt(mMaxCountText.getText().toString().trim());
+                } catch (NumberFormatException ex) {
+                    final String wrongFormatWarning =
+                            "The count format is wrong! Please input correct number!";
+                    Snackbar.make(mMaxCountText, wrongFormatWarning, Snackbar.LENGTH_LONG).show();
+                }
+            }
+        });
+
+        final Button launchButton = findViewById(R.id.launch_button);
+        launchButton.setOnClickListener(this::onLaunchButtonClicked);
+    }
+
+    private void onShowImageOnlyCheckedChanged(View view, boolean isChecked) {
+        if (mIsShowImageOnly == isChecked) {
+            return;
+        }
+
+        mIsShowImageOnly = isChecked;
+        if (isChecked) {
+            mSetVideoOnlyCheckBox.setChecked(false);
+            mSetMimeTypeCheckBox.setChecked(false);
+        }
+    }
+
+    private void onShowVideoOnlyCheckedChanged(View view, boolean isChecked) {
+        if (mIsShowVideoOnly == isChecked) {
+            return;
+        }
+
+        mIsShowVideoOnly = isChecked;
+        if (isChecked) {
+            mSetImageOnlyCheckBox.setChecked(false);
+            mSetMimeTypeCheckBox.setChecked(false);
+        }
+    }
+
+    private void onSetMimeTypeCheckedChanged(View view, boolean isChecked) {
+        if (mSetMimeType == isChecked) {
+            return;
+        }
+
+        mSetMimeType = isChecked;
+        if (isChecked) {
+            mSetImageOnlyCheckBox.setChecked(false);
+            mSetVideoOnlyCheckBox.setChecked(false);
+        }
+        mMimeTypeText.setEnabled(isChecked);
+    }
+
+    private void onSetSelectionCountCheckedChanged(View view, boolean isChecked) {
+        mMaxCountText.setEnabled(isChecked);
+    }
+
+    private void onLaunchButtonClicked(View view) {
+        final Intent intent;
+        if (mGetContentCheckBox.isChecked()) {
+            intent = new Intent(Intent.ACTION_GET_CONTENT);
+            intent.setType("*/*");
+        } else {
+            if (!isPhotoPickerAvailable()) {
+                logErrorAndShowToast("Photo Picker is not available on this device");
+                return;
+            }
+            intent = new Intent(ACTION_PICK_IMAGES);
+        }
+
+        if (mAllowMultipleCheckBox.isChecked()) {
+            if (mGetContentCheckBox.isChecked()) {
+                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
+            } else {
+                intent.putExtra(EXTRA_PICK_IMAGES_MAX, MediaStore.getPickImagesMaxLimit());
+            }
+        }
+
+        if (mSetImageOnlyCheckBox.isChecked()) {
+            intent.setType("image/*");
+        } else if (mSetVideoOnlyCheckBox.isChecked()) {
+            intent.setType("video/*");
+        } else if (mSetMimeTypeCheckBox.isChecked()) {
+            final String mimeType = mMimeTypeText.getText().toString().trim();
+            intent.setType(mimeType);
+        }
+
+        if (mSetSelectionCountCheckBox.isChecked()) {
+            intent.putExtra(EXTRA_PICK_IMAGES_MAX, mMaxCount);
+        }
+
+        try {
+            startActivityForResult(intent, REQUEST_CODE);
+        } catch (ActivityNotFoundException ex){
+            final String errorMessage =
+                    "No Activity found to handle Intent with type \"" + intent.getType() + "\"";
+            logErrorAndShowToast(errorMessage);
+        }
+    }
+
+    private boolean isPhotoPickerAvailable() {
+        return SDK_INT >= Build.VERSION_CODES.R
+            && SdkExtensions.getExtensionVersion(Build.VERSION_CODES.R) >= 2;
+    }
+
+    private void logErrorAndShowToast(String errorMessage) {
+        Log.e(TAG, errorMessage);
+        Snackbar.make(mScrollView, errorMessage, Snackbar.LENGTH_LONG).show();
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        if (resultCode == RESULT_CANCELED) {
+            Log.e(TAG, "The result code is canceled");
+            return;
+        };
+
+        if (requestCode != REQUEST_CODE) {
+            logErrorAndShowToast("The request code is not as we expected");
+            return;
+        }
+
+        if (data == null) {
+            logErrorAndShowToast("The result intent is null");
+            return;
+        }
+
+        final Uri uri = data.getData();
+        if (uri == null && data.getClipData() == null) {
+            logErrorAndShowToast("The uri and clipData of result intent is null");
+            return;
+        }
+
+        final LinearLayout itemContainer = findViewById(R.id.item_container);
+        final int itemSize = (int) (300 * getResources().getDisplayMetrics().density);
+        final LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(itemSize, itemSize);
+        params.gravity = Gravity.CENTER;
+        itemContainer.removeAllViews();
+        if (uri != null) {
+            itemContainer.addView(generateText(uri.toString()));
+            itemContainer.addView(generateItems(uri, params));
+        } else {
+            final ClipData clipData = data.getClipData();
+            final int count = clipData.getItemCount();
+            for (int i = 0; i < count; i++) {
+                Uri item = (Uri) clipData.getItemAt(i).getUri();
+                itemContainer.addView(generateText("" + i + ". " + item.toString()));
+                itemContainer.addView(generateItems(item, params));
+            }
+            // scroll to first item
+            mScrollView.smoothScrollTo(0, 0);
+        }
+    }
+
+    private TextView generateText(String text) {
+        final TextView textView = new TextView(this);
+        textView.setTextAppearance(R.style.HeaderTitle);
+        textView.setText(text);
+        return textView;
+    }
+
+    private View generateItems(Uri uri, LinearLayout.LayoutParams params) {
+        String mimeType = null;
+        // TODO: after getType issue is fixed, change to use getType
+        try (Cursor cursor = getContentResolver().query(uri,
+                new String[]{MediaStore.Files.FileColumns.MIME_TYPE}, null, null, null, null)) {
+            cursor.moveToFirst();
+            mimeType = cursor.getString(0);
+        }
+
+        if (isVideoMimeType(mimeType)) {
+            return generateVideoView(uri, params);
+        } else {
+            return generateImageView(uri, params);
+        }
+    }
+
+    private VideoView generateVideoView(Uri uri, LinearLayout.LayoutParams params) {
+        final VideoView video = new VideoView(this);
+        video.setLayoutParams(params);
+        video.setVideoURI(uri);
+        video.setOnPreparedListener(mp -> {
+            mp.setLooping(true);
+            mp.seekTo(0);
+            mp.start();
+        });
+        return video;
+    }
+
+    private ImageView generateImageView(Uri uri, LinearLayout.LayoutParams params) {
+        final ImageView image = new ImageView(this);
+        image.setLayoutParams(params);
+        image.setScaleType(ImageView.ScaleType.CENTER_CROP);
+        image.setImageURI(uri);
+        return image;
+    }
+
+    private static boolean isVideoMimeType(@Nullable String mimeType) {
+        if (mimeType == null) {
+            return false;
+        }
+        return startsWithIgnoreCase(mimeType, "video/");
+    }
+
+    /**
+     * Variant of {@link String#startsWith(String)} but which tests with case-insensitivity.
+     */
+    private static boolean startsWithIgnoreCase(@Nullable String target, @Nullable String other) {
+        if (target == null || other == null) {
+            return false;
+        }
+        if (other.length() >= target.length()) {
+            return false;
+        }
+        return target.regionMatches(true, 0, other, 0, other.length());
+    }
+}
diff --git a/tools/photopicker-gradle/app/src/main/res/layout/activity_main.xml b/tools/photopicker-gradle/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 000000000..c900517b9
--- /dev/null
+++ b/tools/photopicker-gradle/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,121 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2021 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <CheckBox
+        android:id="@+id/cbx_get_content"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="ACTION_GET_CONTENT"
+        android:textSize="16sp" />
+
+    <CheckBox
+        android:id="@+id/cbx_allow_multiple"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="ALLOW MULTIPLE"
+        android:textSize="16sp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <CheckBox
+            android:id="@+id/cbx_set_image_only"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="SHOW IMAGE ONLY"
+            android:textSize="16sp" />
+
+        <CheckBox
+            android:id="@+id/cbx_set_video_only"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="SHOW VIDEO ONLY"
+            android:textSize="16sp" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <CheckBox
+            android:id="@+id/cbx_set_mime_type"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="SET MIME TYPE"
+            android:textSize="16sp" />
+
+        <EditText
+            android:id="@+id/edittext_mime_type"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:enabled="false"
+            android:textSize="16sp" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <CheckBox
+            android:id="@+id/cbx_set_selection_count"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="SET SELECTION COUNT"
+            android:textSize="16sp" />
+
+        <EditText
+            android:id="@+id/edittext_max_count"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:enabled="false"
+            android:text="10"
+            android:textSize="16sp" />
+    </LinearLayout>
+
+    <Button
+        android:id="@+id/launch_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Launch"
+        android:textSize="16sp" />
+
+    <ScrollView
+        android:id="@+id/scrollview"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <LinearLayout
+            android:id="@+id/item_container"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical" />
+    </ScrollView>
+</LinearLayout>
diff --git a/tools/photopicker-gradle/app/src/main/res/values/styles.xml b/tools/photopicker-gradle/app/src/main/res/values/styles.xml
new file mode 100644
index 000000000..3ad12154d
--- /dev/null
+++ b/tools/photopicker-gradle/app/src/main/res/values/styles.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <style name="HeaderTitle"
+        parent="@android:style/TextAppearance.DeviceDefault.DialogWindowTitle">
+        <item name="android:textColor">?android:attr/textColorPrimary</item>
+    </style>
+</resources>
diff --git a/tools/photopicker-gradle/build.gradle b/tools/photopicker-gradle/build.gradle
new file mode 100644
index 000000000..7cbb66447
--- /dev/null
+++ b/tools/photopicker-gradle/build.gradle
@@ -0,0 +1,17 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:7.0.3"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/tools/photopicker-gradle/gradle.properties b/tools/photopicker-gradle/gradle.properties
new file mode 100644
index 000000000..52f5917cb
--- /dev/null
+++ b/tools/photopicker-gradle/gradle.properties
@@ -0,0 +1,19 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
\ No newline at end of file
diff --git a/tools/photopicker-gradle/gradle/wrapper/gradle-wrapper.jar b/tools/photopicker-gradle/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 000000000..e708b1c02
--- /dev/null
+++ b/tools/photopicker-gradle/gradle/wrapper/gradle-wrapper.jar
diff --git a/tools/photopicker-gradle/gradle/wrapper/gradle-wrapper.properties b/tools/photopicker-gradle/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..1a33dec32
--- /dev/null
+++ b/tools/photopicker-gradle/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Nov 24 17:14:38 GMT 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/tools/photopicker-gradle/gradlew b/tools/photopicker-gradle/gradlew
new file mode 100755
index 000000000..4f906e0c8
--- /dev/null
+++ b/tools/photopicker-gradle/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/tools/photopicker-gradle/gradlew.bat b/tools/photopicker-gradle/gradlew.bat
new file mode 100644
index 000000000..ac1b06f93
--- /dev/null
+++ b/tools/photopicker-gradle/gradlew.bat
@@ -0,0 +1,89 @@
+@rem

+@rem Copyright 2015 the original author or authors.

+@rem

+@rem Licensed under the Apache License, Version 2.0 (the "License");

+@rem you may not use this file except in compliance with the License.

+@rem You may obtain a copy of the License at

+@rem

+@rem      https://www.apache.org/licenses/LICENSE-2.0

+@rem

+@rem Unless required by applicable law or agreed to in writing, software

+@rem distributed under the License is distributed on an "AS IS" BASIS,

+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+@rem See the License for the specific language governing permissions and

+@rem limitations under the License.

+@rem

+

+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Resolve any "." and ".." in APP_HOME to make it shorter.

+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto execute

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto execute

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/tools/photopicker-gradle/settings.gradle b/tools/photopicker-gradle/settings.gradle
new file mode 100644
index 000000000..e09bea455
--- /dev/null
+++ b/tools/photopicker-gradle/settings.gradle
@@ -0,0 +1,10 @@
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+rootProject.name = "photopicker"
+include ':app'