Record Mode that turns any spare Android device into a solid state, battery backed 24/7 network recorder for your standalone IP cameras. WebView class. In simple words, Android WebView is a View that displays web pages. If you have a website and you want to display pages of your website in your android app, you can do so using android WebView widget. Webview API, they: [C-1-1] MUST report android. I'm trying to load a URL in an android WebView, which is in a Fragment. Click on the Blank android app, give it a meaningful name and then click OK. - Oblongmana/react-native-webview-file-upload-android. For example, '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f. Add push notifications, deep links, native transitions, crosswalk webview, barcode scanner, touch face id, and many other configuration options. File : src/ShowWebView. *; import javax. Android, PHP alert, javascript, return value, webview ← Programmatically disable Scroll function on Android WebView Serve a file without Direct Link on PHP → Leave a Reply Cancel reply. In ths example : : 1. Integrating web content to your games was never easier. JSON is not a markup language, so no need to define new tags or attributes to represent the data. In JSON Parsing Android Studio simple example you will learn how to parse simple JSON data from URL step by step. etc you have seen a side menu which appears on click of an icon on top left corner or by dragging on to the screen from left to right , so here in this tutorial we shall see. The default behavior of the Android system is to launch a browser application, To override this behavior for android webview and open the URL in our own android webview. Idea is to check if Url is for example "www. Base64 Decode. We use cookies for various purposes including analytics. If you haven't already, add Firebase to your Android project. Allows the media element to be assigned a media provider object. For all other values of the parameter, including null, it is assumed that the data uses ASCII encoding for octets inside the range of safe URL characters and use the standard %xx hex encoding of URLs for octets outside that range. Android Upload File To Server With Data Upload file to server with data and progress bar Sometimes our android application need to upload some file to our live server like images, text files, etc. When you load HTML directly into the WebView the HTML has no base URL from which to interpret the relative URLs. URL Encode Utils: 18. 本节引言: 本节参考原文:Android 4. css and a few lines of code. Texture ID in the plugin's GL context. replaceAll. 위 에러가 발생 했을 때 체크 사항은 크게 세가지 이다. Android WebView App - Universal for all website By admin on September 21, 2016 Apps Mobile 15570 This APP is for ALL WEBSITE and Social Networking Platform Example: SocialKit, PHPDolphin, Oobenn, Sngine, WoWonder, Socialite and many others…. Cara membuat aplikasi android Webview cukup sederhana, hal yang harus dilakukan adalah memanggil url website dan menampilkannya di dalam aplikasi. Opening url in webview. React Native WebView is a component to render the web page into your mobile app. Bitmap; import android. How to get Title and URL from android. This library adds in an that does support file input. URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. Load local resource into WebView: 3. Use a threaded JavaScript bridge to connect local HTML and Android Java. WebViewClient has different methods that is helpful to show progress bar and override other link to open in web view. This app template supports all kinds of web apps/websites (including HTML, PHP, W. Under the hood webview is implemented with Out-of-Process iframes (OOPIFs). You will get the professional format to call remote Web Services in proper and easiest way at the end of JSON Parsing Android example. 处理 WebView 中 url 跳转 新版WebView对于自定义scheme的url跳转,新增了更为严格的限制条件。 当你实现了 shouldOverrideUrlLoading() 或 shouldInterceptRequest() 回调,WebView 也只会在跳转url是合法Url时才会跳转。 例如,如果你使用这样一个url : Show Profile. We will programmatically parse JSON with JSONObject and JSONArray classes in JSON Parsing In Android. If device implementations provide a complete implementation of the android. All rights reserved. From that select Configure Build Path. Android WebView uses webkit engine to display web page. Enable WebView debugging in your native Android app; debug WebViews in Chrome DevTools. Android Firebase Remote Config Example This tutorial explains how to add Firebase remote config to your Android app. In my previous post, Making HTML5 Video work on Android phones , I said that you have to encode your videos as. f1b1d2e: Docs: Adding css for cdd, updating cdd html to match new css No content changes, only struture and tags Links fixed, new files for footer, cover, and pdfs Adding readme. newly WebView on Android failed to show UTF-8 characters In. i make a app using webview to load url salefore login page in webpage i want on webpage click on login button go to activity and get token and url. I have created a version of Homeactivity. Configure WebViews for debugging. xml en la vista web de Android. Example of open Web Page or URL in WebView Let's add a layout (Horizontal) and WebView controls in LinearLayout (Vertical) in Main Layout. embed and play youtube video in android webview There are some situations may occur where you want to add an embed video in your android applications with some text in android. Welcome to WebView progress bar dialog Android Studio example tutorial. To do that, we need a stylesheet. And the primary goal of Android Webview is to keep the users within the app. It is not bad if we say that the app of SMS messaging has made a revolutionary effect in the world of communication. If appropriate, let the user select between * multiple supported apps. Convert Base64 string to Image (Bitmap). In my last tutorial, we learn how to embed YouTube video in android WebView. Android Loading Image from URL (HTTP) By Ravi Tamada July 12, 2017 0 Comments I am writing this tutorial as lot of people are asking me about loading an image into imageview. Sets the general request property. Returns the empty string when there is no media resource, or it doesn't have a URL. It is used to display online content in android activity. Although what we get from the WebView does not quite seem to be the source code it was fed to begin with. Apps How to allow file upload and download in webview? import android. apk 파일을 풀어 decode_sample 폴더에 저장하게 됩니다. To enable WebView. In this tutorial I will show you how easy it is to create a web view application using the Android SDK. The following are Jave code examples for showing how to use decode() of the android. You will implement Webview with a previous and next buttons in this Android Webview Back Button Navigation In Android Studio tutorial. Join GitHub today. The code sharing concept is used in Xamarin, basically. java shows a button, which onclick opens a webpage. Project Structure :. Turn your ideas into reality with a few clicks. Android JSON Parser Tutorial. Examples Decoding a Cyrillic URL. Desktop and tablet devices should see the same performance as using the Edge browser itself. Returns the contents of the given URL as an array of strings: 12. plz help me. This class is the basis upon which you can roll your own web browser or simply use it to display some online content within your Activity. Download now. Bitmap; import android. Start off by creating a new Android SDK project in your IDE of choice. Load Url to WebView: 10. Click on the Blank android app, give it a meaningful name and then click OK. I found the setWebViewClient method and it kept the website within the WebView inside of the app versus launching the default browser. WebView Nedir? WebView, hem uzak sunuculardaki web sayfalarını hem de uygulamanız içerisine koyduğunuz html sayfalarını görüntüleyebileceğiniz bir bileşendir. The web page can be loaded from same application or URL. This page describes how to use these APIs to work with WebView objects more effectively, improving your app's stability and security. An 'alternative' path/url for the layer/plugin image file for the krpano HTML5 viewer. 4起,Android中的WebView开始基于Chromium( 这大概是因为Android部门负责人从Andy Rubin变成了Chrome部门的主管Sundar Pichai了吧,^_^)。 这个改变使得WebView的性能大幅度提升,并且对HTML5, CSS3, and JavaScript有了更好的支持。. ReactNative's WebView on Android does not support file input. setimageurl(url, imageloader)来设定。. First, the URL class can break a url into its proper components so there is no need for you to do any string search/replace work. loadData utf-8 encoding Android. WebView でステータスコードを取得する方法…書いてる人いないのかな? ちょっと力尽くな感じだけど、できるよ。Honeycomb だけどね。 前に書いたコードからてきとーに抜粋してるので、どこか書き間違いくらいはあるかもしれないけど。. The historyUrl is used for the history entry. Penjelasan Singkat. First Download Facebook Android SDK from github then Create New Project and Write below Code into OnClicklistener of Button. I can download files like png/jpg/pdf etc, but when url is a base64 string value i don't know how to downlo. The Web APIs have native methods to encode or decode to base64: Base64 encoding and decoding. Silver - basic sample for WebView on Android. com” in WebView component. Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. apk 파일을 풀어 decode_sample 폴더에 저장하게 됩니다. For all other values of the parameter, including null, it is assumed that the data uses ASCII encoding for octets inside the range of safe URL characters and use the standard %xx hex encoding of URLs for octets outside that range. Network connected Zebra Printers allow a user to view a Web Page called Webview where a printer can be configured using a browser. We use cookies for various purposes including analytics. Hello Developers, Hope our posts at mytrendin are valuable for you. In this tutorial I am going to explain how to build complete login and registration system in android using PHP, MySQL and SQLite. Ultimately, the answer was found here, using an InputStream returned by a BufferedHTTPEntity. Android WebView class is an extension of Android's View class that allows you to display web pages as a part of your activity layout. The code sharing concept is used in Xamarin, basically. Android使用webview获取网站源码最近在使用webview去获取网页的源码,但是对于百度百家号的文章,网页的源代码获取出来只要标题,内容不见了,想问问有没有大佬知道这个问. Activity; import android. Idea is to check if Url is for example "www. This page is typically accessed by entering the printer's IP Address. 问题对人有帮助,内容完整,我也想知道答案 0 问题没有实际价值,缺少关键内容,没有改进余地. 8 WebView不校验证书漏洞. Supercharging the Android WebView. Android WebView component is a full-fledged browser implemented as a View subclass to embed it into our android application. assigned to an ImageView in your ListView or some other Layout. Record Mode that turns any spare Android device into a solid state, battery backed 24/7 network recorder for your standalone IP cameras. How I Avoid this. com This is an uno cial free book created for educational purposes and is not a liated with o cial Android™ group(s) or company(s). Android example source code file (WebView. txt) or read book online for free. WebView comes with all the features that of a desktop browser like managing history, cookies, HTML5 support and lot more. java (excluding sms methods. f1b1d2e: Docs: Adding css for cdd, updating cdd html to match new css No content changes, only struture and tags Links fixed, new files for footer, cover, and pdfs Adding readme. android decode, android encode, android javascript to utf-8, android 한글꺠짐 안녕하세요 오늘의 포스팅 주제는 encode 과 decode인데요 저의 경우는 webview 를 사용하는데 javascript로 location. Is valid URL: 8. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Android provides several APIs to help you manage the WebView objects that display web content in your app. In simple words, Android WebView is a View that displays web pages. Both decodeStream(InputStream) and decodeByteArray(InputStream) are implemented, you can choice it by setting DECODE_STREAM true or false. OkHttp is a third-party library developed by Square for sending and receive HTTP-based network requests. If the URL host does not match, then an Intent is created to launch the default Activity for handling URLs (which resolves to the user's default web browser). I am creating a mobile app using android studio, php and mysql backend. assigned to an ImageView in your ListView or some other Layout. JSON is one of the best method to provide data in android from web application. In this article you will learn about WebView in Android. For better understanding taking a simple and static JSON to parse. When using the network, it's a best practice to monitor the network state of the device so that you don't attempt to make network calls when the network is unavailable. if true, all links will be opened in same web view. Showing loader before page load. That means app developer can pass any url( Universe resource locator ) through string variable and it will open that webpage on activity screen. Learn how to use android webView using kotlin in any android application. This page is typically accessed by entering the printer's IP Address. The default behavior of Android is to open device browser, when links are clicked. Although what we get from the WebView does not quite seem to be the source code it was fed to begin with. Your votes will be used in our system to get more good examples. In this tutorial we will learn How to use WebView in Android Using Android Studio. Open Android studio and select, Start a new Android Studio project. URL Encode Utils: 18. import android. If the value of the encoding parameter is 'base64', then the data must be encoded as base64. WebViewClient. Android 의 WebView에서 Javascript 인터페이스를 사용하여 Java와 Javascript 간의 호출 예 (WebView view, String url,. Xamarin docs archive. 前言 Android开发中,大多数与字体稍有联系的UI控件(例如:TextView、EditText等)都会提供处理字体的API。我们知道,Android WebView可以用来加载网页。那网页上的文字,除了前端可以去控制外,我们原生开发能不能去控制呢? 2. First Download Facebook Android SDK from github then Create New Project and Write below Code into OnClicklistener of Button. Navigating web page history. Eg: we have a signature value like aedTH5634+hjsGT78-67ty when we POST this value through webview , webview automatically convert + value to space. URL-escaping or base64) applied. Android Script. Şimdi, basit bir uygulama ile WebView 'in nasıl. CGI, URL Decode example 웹브라우저에서 웹서버로 데이터가 전송될 때, POST방식으로 전달되는 경우에 한글, 공백문자, 특수문자 등은 %기호 다음에 16진수 문자열로 변환되어 전송된다. Static HTML. Start off by creating a new Android SDK project in your IDE of choice. The encodeURIComponent() function encodes a Uniform Resource Identifier (URI) component by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two "surrogate" characters). File HTML ini nantinya akan dimuat di aplikasi menggunakan WebView. Android WebView is used to display web page in android. First Download Facebook Android SDK from github then Create New Project and Write below Code into OnClicklistener of Button. I'm trying to load a URL in an android WebView, which is in a Fragment. check step 3. If you are using a custom URL scheme or a base URL and notice that your app is receiving fewer calls to these callbacks or failing to load resources on Android 4. URL Encode Utils: 18. Then in Libraries Tab select Add External Jars and then select the path where you downloaded jar files. Sets the general request property. WebView is the main tool for displaying web and html pages in Android. alt属性の値に関する要件は、個々の節で説明される。. In the example code, dummy delay is added to simulate network delay. This must be a valid UTF-8 string, and will be sent exactly as specified, with no additional encoding (e. Android 의 WebView에서 Javascript 인터페이스를 사용하여 Java와 Javascript 간의 호출 예 (WebView view, String url,. 1BestCsharp blog 4,465,454 views. This quick tip will demonstrate how you can embed an Android WebView in your application with the the WebKit engine. 在做安卓应用时,碰到要处理URL请求的中文参数,我们需要用到URLEncoder. If you want to learn more about android WebView and how to load local html file in android WebView, I will suggest you first read my post on Loading Html File from Assets folder in Android WebView before you continue with this tutorial. Getting Started: WebView-based Applications for Web Developers. In this tutorial, you will learn how to implement a WebView in your Android application. With an Android WebView, you can show website in android application. ISO-8859-1-based %-escapes into Unicode characters. Uri; import android. - Oblongmana/react-native-webview-file-upload-android. android 使用 webview 每隔一段时间页面就被刷新一次解决方法 2015年02月02日 遇到web view (WebView)隔段时间就自动刷新问题竟然在网上找不到解决方案,终于在琢磨了几天之后,找到了问题的答案。 其实问题很简单。. You can control the layout into which a particular web address(URL) will be loaded. android_webview_native_webview_native_gyp micro_bench android_webview_resources micro_bench_static angeles minigzip. 3週間くらいの期間で、スポット的にAndroidアプリの開発を行っています。 その中で私はWebViewと呼ばれるViewコンポーネントを使った処理を少し書いたので、そのへんの話を備忘録的に書きます。. 閲覧には Mozilla FireFox、Google Chrome、もしくは Gecko、Webkit を利用したブラウザを推奨します。 Internet Explorer 6~8 では表示できない部分があります。. Getting started with the Android WebView is fairly simple, whether you want load a remote URL or display pages stored in your app. All rights reserved. Solution to load images from web and caching, so that it won't load images from web every time but will load from local storage if already cached. Replaces each escape sequence in the encoded URI with the character that it represents, but does not decode escape sequences that could not have been introduced by encodeURI. With Xeplayer,you can Download QR BARCODE SCANNER for PC version on your Windows 7,8,10 and Laptop. (Skip this step if you are using a live server). On Android, this can only be used with POST requests. Convert a base64 encoded text into an decoded string or download as a binary file using this free online base64 decoder utility. First Download Facebook Android SDK from github then Create New Project and Write below Code into OnClicklistener of Button. Xml Parser in Android / Get Data from xml feed in Android. Debugging WebViews is the same as debugging a web page through remote debugging. ¶ Step 2: Install SDK Into Project. I n this android tutorial we are going to learn how to play YouTube video inside android WebView using Video url. For example, '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f. i have android webview app. How to use navigation drawer in webview By- Nitesh Kumar Mishra In most of the android applications like Facebook , Google plus , Youtube, amazon kindle , true caller. The WebSocket(url, protocols) constructor, when invoked, must run these steps: Let urlRecord be the result of applying the URL parser to url. If * it is called after the WebView has had a chance to build state (load * pages, create a back/forward list, etc. Allows playback, search, and export to video clip. android_webview_native_webview_native_gyp micro_bench android_webview_resources micro_bench_static angeles minigzip. Before going into the working details, here is an overview of Firebase Remote Config. A fallback * URL will be opened in the supplied WebView if appropriate (in which case the URL was handled, * and true will also be returned). Your votes will be used in our system to get more good examples. Clone via HTTPS Clone with Git or checkout with SVN using the repository's web address. Download now. WebViewClient has different methods that is helpful to show progress bar and override other link to open in web view. Android - WebView - WebView is a view that display web pages inside your application. WebView is the subclass of AbsoluteLayout class. Get Video from URL: 15. This tutorial might help you also, if you encountered the "Blank Page" problem (I have encountered this issue when I was trying to make a request to a secure http ("https")). Nah, akhirnya video kita akan muncul selayaknya embed video di halaman web. WebView控制调用相应的WEB页面进行展示。安卓源码当碰到页面有下载链接的时候,点击上去是一点反应都没有的。原来是因为WebView默认没有开启文件下载的功能,如果要实现文件下载的功能,需要设置WebView的DownloadListener,通过实现自己的DownloadL. setimageurl(url, imageloader)来设定。. Recent Posts [Android]Share status_pressed in a complex button view [Android][Java]Compare two Calendar without time. Learn how to use android webView using kotlin in any android application. This post will describe detailed instructions about how to wrap your existing website into webview and turn it into an android application and then use actions from your website to launch Android barcode scanner and pass result back to the website. I have been looking on the forum how to decode url encoded string, I found that there is library iStringUti. Returns the empty string when there is no media resource, or it doesn't have a URL. we need to extend WebChromeClient and setWebViewClient. java (excluding sms methods. *; import javax. Simple way to scan QR-codes by Android without downloading scanner. Source property on iOS, the URL is encoded. Assume we want to get cookies to get session details and other information, then depending on the URL we can get the cookies. That was a bad idea, don't do it, I'll write short "why" post soon. I had a similar problem: From within a web app, I'd like to use a native Android confirmation dialog. 在开发中WebView不会主动去下载文件,但webView提供了下载文件的的接口. Returns the URL of the current media resource, if any. com" in WebView component. The historyUrl is used for the history entry. decodeFile( you image path here );. This is supported by Android and IOs both. encode(参数,"utf-8")方法对中文参数进行编码,这样做,能够解决大多数中文参数的乱码问题,当然编码方式不一定是“utf-8”,这取决于你服务器端的编码格式。. Android provides support to parse the JSON object and array. This tutorial below explains Android WebView Example and answers to some of the commonly asked questions on android WebView. MEDIA_ERR_DECODE: alert ('The video 4. 1、起因,闲话少说,近期因项目需求,需要在webview必须通过post方式加载url并传参,自然想到posturl(url,byte[]) 2、问题,起初很简单,JSON拼接参数,然后转String,最后String. I already succesfully implemented passing params to app by OverrideUrl. Download now. Although what we get from the WebView does not quite seem to be the source code it was fed to begin with. replaceAll. Android使用webview获取网站源码最近在使用webview去获取网页的源码,但是对于百度百家号的文章,网页的源代码获取出来只要标题,内容不见了,想问问有没有大佬知道这个问. In this article, I will show you how to create a Web Browser android application using android studio. The Android OS will look for all activities that are able to satisfy your request. Base64 Decode. We will load images from the URL and will show them in viewpager. hello friends ,In this article we are going to learn how to load or view a pdf file from url in web view. Penjelasan Singkat. Let's say something about android webview, when we open webpage in an andorid application, the http header would some how add a field named x-requested-with to show your app's package name. Camera Tutorial With Example In Android Studio [Step by Step] In Android, Camera is a hardware device that allows capturing pictures and videos in your applications. Bitmap; import android. I am working with VS 2015 and have latest version of Xamarin. New! Background Audio Mode (click Menu in Gallery View) where audio will keep playing even when you switch away to other apps or lock the screen. That means app developer can pass any url( Universe resource locator ) through string variable and it will open that webpage on activity screen. Allows the media element to be assigned a media provider object. ImageView Tutorial With Example In Android. A fallback * URL will be opened in the supplied WebView if appropriate (in which case the URL was handled, * and true will also be returned). Forms and is causing a massive issue when redirecting to an Identity Server which. And it seems to work on everything from Android 2. Universal-Image-Loader,android-Volley,Picasso、Fresco和Glide图片缓存库的联系与区别. View Keith McConnell’s profile on LinkedIn, the world's largest professional community. I am implementing an android application related to Webview. WebView A WebView is used to dispaly web pages or to display some online content in your activity. Android WebView File Download. lo tengo funcionando gracias a este tema: File Upload in WebView. 삼성 갤럭시 S10(안드로이드 9. The web page could be displayed in the same Android Application, without opening a browser window. apk 파일을 풀어 decode_sample 폴더에 저장하게 됩니다. The intent of this project is to help you "Learn Android by Example" TM. WebView控制调用相应的WEB页面进行展示。安卓源码当碰到页面有下载链接的时候,点击上去是一点反应都没有的。原来是因为WebView默认没有开启文件下载的功能,如果要实现文件下载的功能,需要设置WebView的DownloadListener,通过实现自己的DownloadL. Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. 1) JSON is faster and easier than xml for AJAX applications. Under the hood webview is implemented with Out-of-Process iframes (OOPIFs). The solution involves starting a Webkit instance in a custom app, and intercepting links with a certain prefix. Bagi anda yang sudah punya website tentu aplikasi ini akan jadi lebih menarik, kenapa begitu? karena pada aplikasi ini kita akan me-load atau mengakses alamat (url) web dari dalam aplikasi Android tersebut, dengan begitu kita bak sudah punya […]. Actually, recently I was developing an Android Application in which I was required to add inbuilt gallery feature for the captured images through that application. To do that, we need a stylesheet. It enables us to embed a web browser in our activity. Android provides several APIs to help you manage the WebView objects that display web content in your app. plist as suggest by @BenC but still same response. 4开始,Android中的WebView不再是基于WebKit的,而是开始基于Chromium,这个改变使得WebView的性能大幅提升,并且对HTML5,CSS,JavaScript有了更好的支持!. Open XAMPP Server and Start the Server. Get Video from URL: 15. An object of this class can fetch, decode, and play both audio and video with minimal setup. package com. One example is WebView, views which can be embedded in your Activities and used to display Web pages. 如何在Chrome自定义选项卡android中隐藏url; WebView OverScroll; 在Viewpager中滚动Webview; Android的webview加载本地的JavaScript; WebView中的Flash无法在Android 3. java) This example Android source code file (WebView. Kotlin Android - WebView Android AlertDialog class is used to display a web page embedded in the Android Activity. Convert the Image to base64. All rights reserved. Intent; import android. Desktop and tablet devices should see the same performance as using the Edge browser itself. The MainActivity. 4 (API level 19) introduces a new version of WebView that is based on Chromium. 4 KitKat vista web. Hello, learners. Adding WebView to Activity, load URL and grab focus: 2. First, check the output of this load and play video from URL Android and then we will implement it step by step. WebView is the main tool for displaying web and html pages in Android. Showing loader before page load. We will learn how to webChromeClient, WebViewClient or WebSettings to customise it. Getting started with the Android WebView is fairly simple, whether you want load a remote URL or display pages stored in your app. In android WebView is an embedded browser that can render static HTML data or even remote URL. Bitmap; import android. This tutorial below explains Android WebView Example and answers to some of the commonly asked questions on android WebView. For new and more advanced Android Login Registration visit Android Login Registration with NodeJS , MongoDB. Firebase Remote Config plat_ios plat_android plat_web plat_cpp plat_unity Change the behavior and appearance of your app without publishing an app update, at no cost, for unlimited daily active users. The web page could be displayed in the same Android Application, without opening a browser window. Learn how to use android WebView widget in any android application. Where previously %-escapes where sent unchanged to the JavaScript, they will now be decoded first, which can result in an accidental re-encoding of e. Chaque fois que j'ouvre un lien téléphonique, cela fonctionne très bien et ouvre le téléphone. The plugin can use this to render the decoded picture.