Display Gallery Images in ImageView on Android | Tutorial

Introduction

Displaying images in an ImageView on Android can be a great way to showcase a gallery of images to users. In this tutorial, we will discuss how to display gallery images in an ImageView on Android.

Step 1: Requesting Permissions

The first step is to request permission from the user to access their gallery. This can be done using the READ_EXTERNAL_STORAGE permission. We can request this permission using the following code snippet:

<uses-permission android_name="android.permission.READ_EXTERNAL_STORAGE" />

Make sure to request this permission in the AndroidManifest.xml file and also check for the permission at runtime.

Step 2: Retrieving Images from Gallery

The next step is to retrieve images from the user's gallery. This can be done using the Intent.ACTION_PICK action. We can create an Intent object and set its action to Intent.ACTION_PICK to retrieve images from the gallery.

Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, RESULT_LOAD_IMAGE);

Once the user selects an image from the gallery, the onActivityResult() method will be called and we can retrieve the selected image using the following code:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
        Uri selectedImage = data.getData();
        String[] filePathColumn = {MediaStore.Images.Media.DATA};

        Cursor cursor = getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        cursor.close();

        ImageView imageView = findViewById(R.id.imageView);
        imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
    }
}

Conclusion

By following these simple steps, we can easily display gallery images in an ImageView on Android. Make sure to request the necessary permissions and handle the onActivityResult() method properly to retrieve the selected image. Happy coding!