How to Fix `java.net.UnknownHostException` in Android When Accessing RSS Feeds?

How can I resolve the `java.net.UnknownHostException` error in my Android application when trying to access RSS feeds?

java.net.UnknownHostException: Unable to resolve host "example.com"; No address associated with hostname.

The `java.net.UnknownHostException` indicates that your Android application is unable to connect to the specified host. This typically happens when there are issues with network connectivity or DNS resolution. Below, we’ll explore the common causes of this error and provide solutions to address it.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app">

    <uses-permission android:name="android.permission.INTERNET" />

</manifest>

Causes

• The device or emulator may not have an active internet connection.
• Incorrect URL being used in the RSS feed.
• Issues with the DNS configuration of the emulator or device.
• Network permissions not set correctly in the application.

Solutions

• Ensure that your emulator/device is connected to the internet, and try accessing other websites to confirm.
• Double-check the URL you are attempting to reach for any typos or formatting errors.
• Reset the network settings on your emulator. For Android Studio, you can enable 'Use host GPU' for better network stability.
• Add necessary permissions in the AndroidManifest.xml file:
• <uses-permission android:name="android.permission.INTERNET" />
• Check for firewall settings that might be blocking access to the desired URL.

Mistake: Forgetting to add internet permission in the AndroidManifest.xml.

Solution: Ensure you include the line `<uses-permission android:name="android.permission.INTERNET" />` within the `<manifest>` tag.

Mistake: Using an incorrect URL format.

Solution: Verify that the URL is correct and reachable. It should be a valid host without any typos.

Mistake: Not checking network connectivity.

Solution: Make sure the device or emulator has a stable internet connection.