package com.stoutner.privacybrowser;
-import android.app.Activity;
+import android.annotation.SuppressLint;
import android.app.Dialog;
-import android.app.DialogFragment;
+import android.content.Context;
import android.content.DialogInterface;
import android.net.Uri;
import android.os.Bundle;
+import android.support.annotation.NonNull;
// `android.support.v7.app.AlertDialog` uses more of the horizontal screen real estate versus `android.app.AlertDialog's` smaller width.
import android.support.v7.app.AlertDialog;
+// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <=22.
+import android.support.v7.app.AppCompatDialogFragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import java.util.Locale;
-public class DownloadFile extends DialogFragment {
+public class DownloadFile extends AppCompatDialogFragment {
private String downloadUrl;
private String downloadFileName;
Bundle argumentsBundle = new Bundle();
String fileNameString;
- if (contentDisposition.isEmpty()) { // If `contentDisposition` is empty, use the last path segment of the URL as the file name.
+
+ // Parse `filename` from `contentDisposition`.
+ if (contentDisposition.contains("filename=\"")) { // The file name is contained in a string surrounded by `""`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=\"") + 10, contentDisposition.indexOf("\"", contentDisposition.indexOf("filename=\"") + 10));
+ } else if (contentDisposition.contains("filename=") && ((contentDisposition.indexOf(";", contentDisposition.indexOf("filename=") + 9)) > 0 )) { // The file name is contained in a string beginning with `filename=` and ending with `;`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=") + 9, contentDisposition.indexOf(";", contentDisposition.indexOf("filename=") + 9));
+ } else if (contentDisposition.contains("filename=")) { // The file name is contained in a string beginning with `filename=` and proceeding to the end of `contentDisposition`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=") + 9, contentDisposition.length());
+ } else { // `contentDisposition` does not contain the filename, so use the last path segment of the URL.
Uri downloadUri = Uri.parse(urlString);
fileNameString = downloadUri.getLastPathSegment();
- } else { // Extract `fileNameString` from `contentDisposition` using the substring beginning after `filename="` and ending one character before the end of `contentDisposition`.
- fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=\"") + 10, contentDisposition.length() - 1);
}
- // Convert `contentLength` to MB and store it in `fileSizeString`. `%.3g` displays the three most significant digits.
- String fileSizeString = String.format(Locale.getDefault(), "%.3g", (float) contentLength / 1048576) + " MB";
-
// Store the variables in the `Bundle`.
argumentsBundle.putString("URL", urlString);
argumentsBundle.putString("File_Name", fileNameString);
- argumentsBundle.putString("File_Size", fileSizeString);
+ argumentsBundle.putLong("File_Size", contentLength);
// Add `argumentsBundle` to this instance of `DownloadFile`.
DownloadFile thisDownloadFileDialog = new DownloadFile();
// Store the strings in the local class variables.
downloadUrl = getArguments().getString("URL");
downloadFileName = getArguments().getString("File_Name");
- fileSize = getArguments().getString("File_Size");
+
+ // Get the `File_Size`.
+ long fileSizeLong = getArguments().getLong("File_Size");
+
+ // Convert `fileSizeLong` to a String.
+ if (fileSizeLong == -1) { // We don't know the file size.
+ fileSize = getString(R.string.unknown_size);
+ } else { // Convert `fileSize` to MB and store it in `fileSizeString`. `%.3g` displays the three most significant digits.
+ fileSize = String.format(Locale.getDefault(), "%.3g", (float) fileSizeLong / 1048576) + " MB";
+ }
}
// The public interface is used to send information back to the parent activity.
public interface DownloadFileListener {
- void onDownloadFile(DialogFragment dialogFragment, String downloadUrl);
+ void onDownloadFile(AppCompatDialogFragment dialogFragment, String downloadUrl);
}
// `downloadFileListener` is used in `onAttach()` and `onCreateDialog()`.
private DownloadFileListener downloadFileListener;
// Check to make sure tha the parent activity implements the listener.
- public void onAttach(Activity parentActivity) {
- super.onAttach(parentActivity);
+ @Override
+ public void onAttach(Context context) {
+ super.onAttach(context);
try {
- downloadFileListener = (DownloadFileListener) parentActivity;
+ downloadFileListener = (DownloadFileListener) context;
} catch (ClassCastException exception) {
- throw new ClassCastException(parentActivity.toString() + " must implement DownloadFileListener.");
+ throw new ClassCastException(context.toString() + " must implement DownloadFileListener.");
}
}
+ // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
+ @SuppressLint("InflateParams")
@Override
+ @NonNull
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Get the activity's layout inflater.
LayoutInflater layoutInflater = getActivity().getLayoutInflater();
// Create an `AlertDialog` from the `AlertDialog.Builder`.
final AlertDialog alertDialog = dialogBuilder.create();
+ // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`.
+ assert alertDialog.getWindow() != null;
+
// Show the keyboard when `alertDialog` is displayed on the screen.
alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
// Set the text for `downloadFileSizeTextView`.
TextView downloadFileSizeTextView = (TextView) alertDialog.findViewById(R.id.download_file_size);
- assert downloadFileSizeTextView != null; // Remove the warning of the following line that `downloadFileSizeTextView` might be null.
+ assert downloadFileSizeTextView != null; // Remove the warning on the following line that `downloadFileSizeTextView` might be `null`.
downloadFileSizeTextView.setText(fileSize);
// Set the text for `downloadFileNameTextView`.
EditText downloadFileNameTextView = (EditText) alertDialog.findViewById(R.id.download_file_name);
- assert downloadFileNameTextView != null; // Remove the warning on the following line that `downloadFileNameTextView` might be null.
+ assert downloadFileNameTextView != null; // Remove the warning on the following line that `downloadFileNameTextView` might be `null`.
downloadFileNameTextView.setText(downloadFileName);
// Allow the `enter` key on the keyboard to save the file from `downloadFileNameTextView`.