How to Implement a Download Progress Bar in your Android Application
How to Implement a Download Progress Bar in your Android Application
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This tutorial describes how to implement a download progress bar in android, through the following steps:
1) we create a new project in an android studio with new project wizard and choose empty activity form the wizard in our project.
2) we then go to activity_main.xml file and add Button view with id “button” and text “Download Image”.
3) then we go to MainActivity.java class and get button and add click listener to it.
5) then we create class called DownloadImage which extends AsyncTask class.
6) we implement the download of image and updating the progress bar.
7) we go to the manifest to add network permission and write external storage permission.
7) Finally we deploy and run the app to the android emulator.
Notes:
1) URL: is a class that represents a Uniform Resource Locator, a pointer to a "resource" on the World Wide Web. A resource can be something as simple as a file or a directory, or it can be a reference to a more complicated object, such as a query to a database or to a search engine.
2) URLConnection: is the superclass of all classes that represent a communications link between the application and a URL. Instances of this class can be used both to read from and to write to the resource referenced by the URL.
3) ProgressDialog: A dialog showing a progress indicator and an optional text message or view. Only a text message or a view can be used at the same time. The dialog can be made cancelable on back key press and the progress range is 0 to max value.
The source code is available at http://www.indragni.com/android/Downl...
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How to Implement a Download Progress Bar in your Android Application