Image View Studio

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Contents

Image View Studio 6

4 Android Project

Project Description

In this tutorial, we will see how to load an image from URL into Android ImageView.
For downloading the image from URL and loading it in ImageView, we use AsyncTask.

Environment Used

JDK 6 (Java SE 6)
Eclipse Indigo IDE for Java EE Developers (3.7.1)
Android SDK 4.0.3 / 4.1 Jelly Bean
Android Development Tools (ADT) Plugin for Eclipse (ADT version 20.0.0)

Prerequisites

Android Project

Create an Android project and name it as “ImageViewFromURL“.

strings.xml

Open res/values/strings.xml and replace it with following content.

XML layout file

This application uses XML layout file (main.xml) to display the ImageView.

Open main.xml file in res/layout and copy the following content.

Activity

In src folder, create a new Class and name it as “ImageViewFromURLActivity” in the package “com.theopentutorials.android.views” and copy the following code.

From Android 3.x Honeycomb or later, you cannot perform Network IO on the UI thread and doing this throws android.os.NetworkOnMainThreadException. You must use Asynctask instead as shown below.

Whenever we need to perform lengthy operation or any background operation we can use Asyntask which executes a task in background and publish results on the UI thread without having to manipulate threads and/or handlers.
In onCreate(), we create and execute the task to load image from url. The task’s execute method invokes doInBackground() where we open a Http URL connection and create a Bitmap from InputStream and return it.
Once the background computation finishes, onPostExecute() is invoked on the UI thread which sets the Bitmap on ImageView.

Android includes two HTTP clients: HttpURLConnection and Apache HTTP Client.
For Gingerbread and later, HttpURLConnection is the best choice.

AndroidManifest.xml

Define the activity in AndroidManifest.xml file. To access internet from Android application set the android.permission.INTERNET permission in manifest file as shown below.

Output

Run your application

Project Folder Structure

The complete folder structure of this example is shown below.

Tags: Android 4 Examples, Android 4 icecream sandwich examples, Android 4.1 Jelly Bean Examples, Android Asynctask Example, Android Bitmap, Android Examples, Android Http Example, Android ImageView Example, Android load image from url

jay

Very Nice Thnx :)……….

kannan

very nice but i want how to set two different imageview link when am press image automatically load browser, download file(not image some other file am specify url into that imagebackground) plz help me

Deepesh Bhati

Thanks for this tutorial…..

jason

Nice sample . It works perfectly. If possible then add feature to download source code

Bruno

Really useful…. Thanks a lot….

Stir-Fried Code

This tutorial really helped me; I’d had nothing but failures trying to get an image to load from a url. This tutorial gave me my first success. Thanks!

priya

Helped alot as a beginner…:)
Thanks

Abhishek Sinari

Thanx a lot for code. But I want to use it to load for multiple images. Please mail me the code @ [email protected]

getsuga

btw, if you got replay from the admin.. can you forward it to me too?? because i want to know how to use in multiple imange..
here my mail : [email protected]

Alex Boey

Hello getsuna please also forward it to me. [email protected]

Vijay Kishan

Hello getsuga please also forward it to me. [email protected]

Yoga Murthy.s

great code ..it helped me a lot in making the first app

Yoga Murthy.s

Hey all, this code actually gives an crash in application whenever there is no internet connectivity in the device. could you please add the exception code to the tutorial?

getsuga

btw, can you tell me how to load text from URL in this project too?? and if you don’t mind in multiple text and image, not just one text and image..
thanks..

it gives me an error in line 73 of ImageViewFromURLActivity!
brcause I have no class named URL!
please help me how to make it

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WilczurZnahor

Hi, I am using this code, but when creating bitmap

bitmap = BitmapFactory.
decodeStream(stream, null, bmOptions);

getting:
— SkImageDecoder::Factory returned null

any advices?

Sourabh Jain

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