👉 AndroidManifest.xml : <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 👉 DownloadSingleTask : import android.app.Notification; import android.app.NotificationChannel; import android.app.NotificationManager; import android.content.Context; import android.os.AsyncTask; import android.os.Build; import android.os.Environment; import android.os.Handler; import android.support.v4.app.NotificationCompat; import android.util.Log; import android.widget.Toast; import com.evoli.sanghvi.sanghvi.R; import com.evoli.sanghvi.sanghvi.common.ServerSettings; import com.evoli.sanghvi.sanghvi.interfaces.AsyncResponse; import java.io.File; import java.io.FileOutputStream; import java.io.InputStrea...