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77 lines
3.0 KiB
77 lines
3.0 KiB
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Android PdfRendererBasic Sample
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===================================
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This sample demonstrates how to display PDF document on screen using
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the PdfRenderer introduced in Android 5.0 Lollipop.
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Introduction
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------------
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You can now render PDF document pages into bitmap images for printing by using
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the new [PdfRenderer][1] class. You must specify a [ParcelFileDescriptor][2]
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that is seekable (that is, the content can be randomly accessed) on which the
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system writes the the printable content. Your app can obtain a page for
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rendering with [openPage()][3], then call [render()][4] to turn the opened
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[PdfRenderer.Page][5] into a bitmap.
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This sample loads the PDF from assets. Contents of assets are compressed by
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default, and the PdfRenderer class cannot open it. In this sample, we work
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around this by copying the file into the cache directory.
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[1]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.html
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[2]: https://developer.android.com/reference/android/os/ParcelFileDescriptor.html
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[3]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.html#openPage(int)
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[4]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.Page.html#render(android.graphics.Bitmap,%20android.graphics.Rect,%20android.graphics.Matrix,%20int)
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[5]: https://developer.android.com/reference/android/graphics/pdf/PdfRenderer.Page.html
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Pre-requisites
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--------------
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- Android SDK 27
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- Android Build Tools v27.0.2
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- Android Support Repository
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Screenshots
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-------------
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<img src="screenshots/main.png" height="400" alt="Screenshot"/>
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Getting Started
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---------------
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This sample uses the Gradle build system. To build this project, use the
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"gradlew build" command or use "Import Project" in Android Studio.
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Support
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-------
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- Google+ Community: https://plus.google.com/communities/105153134372062985968
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- Stack Overflow: http://stackoverflow.com/questions/tagged/android
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If you've found an error in this sample, please file an issue:
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https://github.com/googlesamples/android-PdfRendererBasic
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Patches are encouraged, and may be submitted by forking this project and
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submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
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License
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-------
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Copyright 2017 The Android Open Source Project, Inc.
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Licensed to the Apache Software Foundation (ASF) under one or more contributor
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license agreements. See the NOTICE file distributed with this work for
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additional information regarding copyright ownership. The ASF licenses this
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file to you under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations under
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the License.
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