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README.md

      1 
      2 Android PdfRendererBasic Sample (Kotlin)
      3 ========================================
      4 
      5 This sample demonstrates how to display PDF document on screen using
      6 the PdfRenderer introduced in Android 5.0 Lollipop.
      7 
      8 Introduction
      9 ------------
     10 
     11 You can now render PDF document pages into bitmap images for printing by using
     12 the new [PdfRenderer][1] class. You must specify a [ParcelFileDescriptor][2]
     13 that is seekable (that is, the content can be randomly accessed) on which the
     14 system writes the the printable content. Your app can obtain a page for
     15 rendering with [openPage()][3], then call [render()][4] to turn the opened
     16 [PdfRenderer.Page][5] into a bitmap.
     17 
     18 This sample loads the PDF from assets. Contents of assets are compressed by
     19 default, and the PdfRenderer class cannot open it. In this sample, we work
     20 around this by copying the file into the cache directory.
     21 
     22 [1]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.html
     23 [2]: https://developer.android.com/reference/android/os/ParcelFileDescriptor.html
     24 [3]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.html#openPage(int)
     25 [4]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.Page.html#render(android.graphics.Bitmap,%20android.graphics.Rect,%20android.graphics.Matrix,%20int)
     26 [5]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.Page.html
     27 
     28 Pre-requisites
     29 --------------
     30 
     31 - Android SDK 27
     32 - Android Support Repository
     33 
     34 Screenshots
     35 -------------
     36 
     37 <img src="screenshots/main.png" height="400" alt="Screenshot"/>
     38 
     39 Getting Started
     40 ---------------
     41 
     42 This sample uses the Gradle build system. To build this project, use the
     43 "gradlew build" command or use "Import Project" in Android Studio.
     44 
     45 Support
     46 -------
     47 
     48 - Google+ Community: https://plus.google.com/communities/105153134372062985968
     49 - Stack Overflow: http://stackoverflow.com/questions/tagged/android
     50 
     51 If you've found an error in this sample, please file an issue:
     52 https://github.com/googlesamples/android-PdfRendererBasic
     53 
     54 Patches are encouraged, and may be submitted by forking this project and
     55 submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
     56 
     57 License
     58 -------
     59 
     60 Copyright 2017 The Android Open Source Project, Inc.
     61 
     62 Licensed to the Apache Software Foundation (ASF) under one or more contributor
     63 license agreements.  See the NOTICE file distributed with this work for
     64 additional information regarding copyright ownership.  The ASF licenses this
     65 file to you under the Apache License, Version 2.0 (the "License"); you may not
     66 use this file except in compliance with the License.  You may obtain a copy of
     67 the License at
     68 
     69 http://www.apache.org/licenses/LICENSE-2.0
     70 
     71 Unless required by applicable law or agreed to in writing, software
     72 distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     73 WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
     74 License for the specific language governing permissions and limitations under
     75 the License.
     76