要将图像保存为GIF格式并将其插入MediaStore，可以使用以下代码示例：

import android.content.ContentResolver;
import android.content.ContentValues;
import android.graphics.Bitmap;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class ImageUtils {
    private static final String TAG = "ImageUtils";

    public static void saveImageAsGif(ContentResolver contentResolver, Bitmap bitmap) {
        // 创建保存图像的文件
        String fileName = "image.gif";
        File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), fileName);

        // 保存图像为GIF格式
        try {
            OutputStream outputStream = new FileOutputStream(file);
            bitmap.compress(Bitmap.CompressFormat.GIF, 100, outputStream);
            outputStream.flush();
            outputStream.close();

            // 将图像插入MediaStore，并更新媒体库
            Uri imageUri = insertImage(contentResolver, file.getAbsolutePath(), fileName, "image/gif");
            if (imageUri != null) {
                MediaScannerConnection.scanFile(contentResolver.getContext(), new String[]{file.getAbsolutePath()}, null, null);
                Log.d(TAG, "Image saved and inserted into MediaStore: " + imageUri.toString());
            }
        } catch (IOException e) {
            e.printStackTrace();
            Log.e(TAG, "Failed to save image: " + e.getMessage());
        }
    }

    private static Uri insertImage(ContentResolver contentResolver, String imagePath, String imageName, String imageMimeType) {
        ContentValues values = new ContentValues();
        values.put(MediaStore.Images.Media.DISPLAY_NAME, imageName);
        values.put(MediaStore.Images.Media.MIME_TYPE, imageMimeType);
        values.put(MediaStore.Images.Media.DATA, imagePath);

        return contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
    }
}

使用上述代码，您可以调用saveImageAsGif方法来保存并插入GIF图像到MediaStore。确保在AndroidManifest.xml文件中添加适当的权限（例如WRITE_EXTERNAL_STORAGE）以访问外部存储。