How to Download Image from URL in Android

Downloading an image from a URL in Android can be achieved by using the following steps:

1. Make sure to add the necessary permissions in the AndroidManifest.xml file to access external storage. Use the following code:


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


2. Next, you will need to request permissions at runtime. Use the following code to do so:


ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, CODE);


3. After acquiring the necessary permissions, you can proceed with downloading the image from the URL.
4. Use the following code snippet to download the image:


AsyncTask.execute(new Runnable() {
@Override
public void run() {
try {
URL url = new URL("https://www.example.com/image.jpg");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream input = connection.getInputStream();
File file = new File(Environment.getExternalStorageDirectory(), "image.jpg");
OutputStream output = new FileOutputStream(file);
byte[] data = new byte[1024];
int count;
while ((count = input.read(data)) != -1) {
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (Exception e) {
e.printStackTrace();
}
}
});


5. Once the image is downloaded, you can read it from the storage using the following code:


Bitmap bitmap = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory() + "/image.jpg");
imageView.setImageBitmap(bitmap);


By following these steps, you can easily download an image from a URL in Android, write external storage permissions, and read from the storage.