Initial implmentation

.circleci/config.yml

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+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:latest
+    steps:
+      - checkout
+      - run: npm install
+      - run: npm run lint
+      - run: npm run test

.editorconfig

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+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+
+[**/{.js,package.json}]
+indent_style = space
+indent_size = 2

.eslintrc.json

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+{
+  "parser": "babel-eslint",
+  "extends": "airbnb",
+  "rules": {
+    "no-mixed-operators": 0,
+    "react/jsx-filename-extension": 0
+  }
+}

.gitignore

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+# NPM
+react-native-pdfview-*.tgz
+package/
+
+# OSX
+#
+.DS_Store
+
+# node.js
+#
+node_modules/
+npm-debug.log
+yarn-error.log
+
+
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+project.xcworkspace
+
+
+# Android
+#
+build/
+.gradle

.npmignore

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+__tests__
+.DS_Store
+.editorconfig
+.eslintrc.json
+coverage
+demo
+node_modules

README.md

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+
+# react-native-pdfview
+
+[![CircleCI](https://circleci.com/gh/rumax/react-native-PDFView.svg?style=shield)](https://circleci.com/gh/rumax/react-native-PDFView)
+[![codecov](https://codecov.io/gh/rumax/react-native-PDFView/branch/master/graph/badge.svg)](https://codecov.io/gh/rumax/react-native-PDFView)
+[![npm version](https://badge.fury.io/js/react-native-PDFView.svg)](https://badge.fury.io/js/react-native-PDFView)
+
+Library for displaying [PDF documents](https://acrobat.adobe.com/us/en/acrobat/about-adobe-pdf.html) in [react-native](http://facebook.github.io/react-native/)
+
+- android - uses implementation of [Android PdfViewer](https://github.com/barteksc/AndroidPdfViewer)
+- ios - To be implemented
+
+## Example
+
+```js
+import PdfView from 'react-native-pdfview';
+
+<View>
+  <PdfView
+    style={{
+      height: 360,
+      width: Dimensions.get('window').width,
+    }}
+    onError={(error) => {
+      console.log('onError', error);
+    }}
+    onLoad={() => {
+      console.log('onLoad');
+    }}
+    resource="http://www.pdf995.com/samples/pdf.pdf"
+  />
+</View>
+```
+
+## Getting started
+
+`$ npm install react-native-pdfview --save`
+
+### Mostly automatic installation
+
+`$ react-native link react-native-pdfview`
+
+### Manual installation
+
+
+#### iOS
+
+TBI
+
+#### Android
+
+1. Open up `android/app/src/main/java/[...]/MainActivity.java`
+  - Add `import com.reactlibrary.PdfViewPackage;` to the imports at the top of the file
+  - Add `new RNReactNativePdfViewPackage()` to the list returned by the `getPackages()` method
+2. Append the following lines to `android/settings.gradle`:
+  	```
+  	include ':react-native-pdf-view'
+  	project(':react-native-pdf-view').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-pdf-view/android')
+  	```
+3. Insert the following lines inside the dependencies block in `android/app/build.gradle`:
+  	```
+      compile project(':react-native-pdf-view')
+  	```
+
+#### Windows
+[ReactWindows](https://github.com/ReactWindows/react-native)
+
+N/A
+
+## License
+
+[MIT](https://opensource.org/licenses/MIT)
+
+### Other information
+
+- Generated with [react-native-create-library](https://github.com/frostney/react-native-create-library)
+- Alternatives: [react-native-pdf](https://www.npmjs.com/package/react-native-pdf) has full implementation of [PDFView](https://github.com/barteksc/AndroidPdfViewer) but requires other dependencies and some functionality that is superfluous if you only need to display pdf (using url or base64)

android/build.gradle

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+apply plugin: 'com.android.library'
+description = 'react-native-pdfview'
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:1.3.1'
+    }
+}
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.1"
+
+    defaultConfig {
+        minSdkVersion 19
+        targetSdkVersion 22
+        versionCode 1
+        versionName "1.0"
+    }
+    lintOptions {
+        abortOnError false
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile 'com.facebook.react:react-native:+'
+    compile 'com.github.barteksc:android-pdf-viewer:3.0.0-beta.5'
+}

android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.reactlibrary">
+</manifest>

android/src/main/java/com/reactlibrary/AsyncDownload.java

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+package com.reactlibrary;
+
+/**
+ * Created by Maksym Rusynyk on 06/03/2018.
+ *
+ * This source code is licensed under the MIT license
+ */
+
+import android.os.AsyncTask;
+import android.util.Log;
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.URL;
+import java.net.URLConnection;
+
+class AsyncDownload extends AsyncTask<Void, Void, Void> {
+    private static String TAG = "AsyncDownload";
+    private static int BUFF_SIZE = 8192;
+    private AsyncTaskCompleted listener;
+    private File file = null;
+    private String resource = null;
+    private IOException exception;
+
+    public AsyncDownload(String resource, File file, AsyncTaskCompleted listener) {
+        this.listener = listener;
+        this.file = file;
+        this.resource = resource;
+    }
+
+    @Override
+    protected void onPreExecute() {
+        super.onPreExecute();
+        exception = null;
+        Log.i(TAG, "onPreExecute");
+    }
+
+    @Override
+    protected Void doInBackground(Void... params)  {
+        URL url;
+        URLConnection connection = null;
+        try {
+            url = new URL(resource);
+            connection = url.openConnection();
+            connection.connect();
+        } catch (IOException e) {
+            exception = e;
+            return null;
+        }
+        try (
+                InputStream input = new BufferedInputStream(url.openStream(), BUFF_SIZE);
+                OutputStream output = new FileOutputStream(file);
+        ) {
+            long total = 0;
+            int count;
+            Log.d(TAG, "Downloading");
+            int lengthOfFile = connection.getContentLength();
+            Log.d(TAG, "length of the file: " + lengthOfFile);
+            byte data[] = new byte[BUFF_SIZE];
+
+            while ((count = input.read(data)) != -1) {
+                total += count;
+                output.write(data, 0, count);
+            }
+
+            output.flush();
+            Log.d(TAG, "total: " + total);
+        } catch (IOException e) {
+            exception = e;
+        }
+
+        return null;
+    }
+
+    @Override
+    protected void onPostExecute(Void param) {
+        Log.d(TAG, "onPostExecute");
+        if (exception == null) {
+            listener.downloadTaskCompleted();
+        } else {
+            listener.downloadTaskFailed(exception);
+        }
+    }
+}

android/src/main/java/com/reactlibrary/AsyncTaskCompleted.java

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+package com.reactlibrary;
+
+/**
+ * Created by Maksym Rusynyk on 06/03/2018.
+ *
+ * This source code is licensed under the MIT license
+ */
+
+import java.io.IOException;
+
+public interface AsyncTaskCompleted {
+    void downloadTaskCompleted();
+    void downloadTaskFailed(IOException e);
+}