package com.stoutner.privacybrowser.asynctasks;
import android.app.Activity;
+import android.content.ActivityNotFoundException;
+import android.content.ContentResolver;
import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
import android.os.AsyncTask;
+import android.os.Build;
+import android.view.View;
import android.webkit.CookieManager;
+import android.webkit.MimeTypeMap;
+
+import androidx.core.content.FileProvider;
import com.google.android.material.snackbar.Snackbar;
import com.stoutner.privacybrowser.R;
import java.net.HttpURLConnection;
import java.net.Proxy;
import java.net.URL;
+import java.text.NumberFormat;
-public class SaveUrl extends AsyncTask<String, Void, String> {
- // Define a weak references for the calling context and activities.
+public class SaveUrl extends AsyncTask<String, Long, String> {
+ // Define a weak references for the calling context and activity.
private WeakReference<Context> contextWeakReference;
private WeakReference<Activity> activityWeakReference;
NoSwipeViewPager noSwipeViewPager = activity.findViewById(R.id.webviewpager);
// Create a saving file snackbar.
- savingFileSnackbar = Snackbar.make(noSwipeViewPager, R.string.saving_file, Snackbar.LENGTH_INDEFINITE);
+ savingFileSnackbar = Snackbar.make(noSwipeViewPager, activity.getString(R.string.saving_file) + " 0% - " + filePathString, Snackbar.LENGTH_INDEFINITE);
// Display the saving file snackbar.
savingFileSnackbar.show();
@Override
protected String doInBackground(String... urlToSave) {
- // Get a handle for the context and activity.
+ // Get handles for the context and activity.
Context context = contextWeakReference.get();
Activity activity = activityWeakReference.get();
// Because everything relating to requesting data from a webserver can throw errors, the entire section must catch `IOExceptions`.
try {
- // Get the URL from the main activity.
+ // Get the URL from the calling activity.
URL url = new URL(urlToSave[0]);
// Instantiate the proxy helper.
// The actual network request is in a `try` bracket so that `disconnect()` is run in the `finally` section even if an error is encountered in the main block.
try {
- // Get the response code, which causes the connection to the server to be made.
- httpUrlConnection.getResponseCode();
+ // Get the content length header, which causes the connection to the server to be made.
+ String contentLengthString = httpUrlConnection.getHeaderField("Content-Length");
+
+ // Define the file size long.
+ long fileSize;
+
+ // Make sure the content length isn't null.
+ if (contentLengthString != null) { // The content length isn't null.
+ // Convert the content length to an long.
+ fileSize = Long.parseLong(contentLengthString);
+ } else { // The content length is null.
+ // Set the file size to be `-1`.
+ fileSize = -1;
+ }
// Get the response body stream.
InputStream inputStream = new BufferedInputStream(httpUrlConnection.getInputStream());
// Initialize the conversion buffer byte array.
byte[] conversionBufferByteArray = new byte[1024];
+ // Initialize the downloaded kilobytes counter.
+ long downloadedKilobytesCounter = 0;
+
// Define the buffer length variable.
int bufferLength;
while ((bufferLength = inputStream.read(conversionBufferByteArray)) > 0) { // Proceed while the amount of data stored in the buffer in > 0.
// Write the contents of the conversion buffer to the output stream.
outputStream.write(conversionBufferByteArray, 0, bufferLength);
+
+ // Update the file download progress snackbar.
+ if (fileSize == -1) { // The file size is unknown.
+ // Negatively update the downloaded kilobytes counter.
+ downloadedKilobytesCounter = downloadedKilobytesCounter - bufferLength;
+
+ publishProgress(downloadedKilobytesCounter);
+ } else { // The file size is known.
+ // Update the downloaded kilobytes counter.
+ downloadedKilobytesCounter = downloadedKilobytesCounter + bufferLength;
+
+ // Calculate the download percentage.
+ long downloadPercentage = (downloadedKilobytesCounter * 100) / fileSize;
+
+ // Update the download percentage.
+ publishProgress(downloadPercentage);
+ }
}
// Close the input stream.
// Close the output stream.
outputStream.close();
+
+ // Define a media scanner intent, which adds items like pictures to Android's recent file list.
+ Intent mediaScannerIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
+
+ // Add the URI to the media scanner intent.
+ mediaScannerIntent.setData(Uri.fromFile(file));
+
+ // Make it so.
+ activity.sendBroadcast(mediaScannerIntent);
} finally {
// Disconnect the HTTP URL connection.
httpUrlConnection.disconnect();
return saveDisposition;
}
+ // `onProgressUpdate()` operates on the UI thread.
+ @Override
+ protected void onProgressUpdate(Long... downloadPercentage) {
+ // Get a handle for the activity.
+ Activity activity = activityWeakReference.get();
+
+ // Abort if the activity is gone.
+ if ((activity == null) || activity.isFinishing()) {
+ return;
+ }
+
+ // Check to see if a download percentage has been calculated.
+ if (downloadPercentage[0] < 0) { // There is no download percentage. The negative number represents the raw downloaded kilobytes.
+ // Calculate the number of bytes downloaded. When the `downloadPercentage` is negative, it is actually the raw number of kilobytes downloaded.
+ long numberOfBytesDownloaded = 0 - downloadPercentage[0];
+
+ // Format the number of bytes downloaded.
+ String formattedNumberOfBytesDownloaded = NumberFormat.getInstance().format(numberOfBytesDownloaded);
+
+ // Update the snackbar.
+ savingFileSnackbar.setText(activity.getString(R.string.saving_file) + " " + formattedNumberOfBytesDownloaded + " " + activity.getString(R.string.bytes) + " - " + filePathString);
+ } else { // There is a download percentage.
+ // Update the snackbar.
+ savingFileSnackbar.setText(activity.getString(R.string.saving_file) + " " + downloadPercentage[0] + "% - " + filePathString);
+ }
+ }
+
// `onPostExecute()` operates on the UI thread.
@Override
protected void onPostExecute(String saveDisposition) {
- // Get a handle for the activity.
+ // Get handles for the context and activity.
+ Context context = contextWeakReference.get();
Activity activity = activityWeakReference.get();
// Abort if the activity is gone.
// Display a save disposition snackbar.
if (saveDisposition.equals(SUCCESS)) {
- Snackbar.make(noSwipeViewPager, R.string.file_saved, Snackbar.LENGTH_SHORT).show();
+ // Create a file saved snackbar.
+ Snackbar fileSavedSnackbar = Snackbar.make(noSwipeViewPager, activity.getString(R.string.file_saved) + " " + filePathString, Snackbar.LENGTH_LONG);
+
+ // Add an open action if the file is not an APK on API >= 26 (that scenario requires the REQUEST_INSTALL_PACKAGES permission).
+ if (!(Build.VERSION.SDK_INT >= 26 && filePathString.endsWith(".apk"))) {
+ fileSavedSnackbar.setAction(R.string.open, (View v) -> {
+ // Get a file for the file path string.
+ File file = new File(filePathString);
+
+ // Define a file URI variable
+ Uri fileUri;
+
+ // Get the URI for the file according to the Android version.
+ if (Build.VERSION.SDK_INT >= 24) { // Use a file provider.
+ fileUri = FileProvider.getUriForFile(context, activity.getString(R.string.file_provider), file);
+ } else { // Get the raw file path URI.
+ fileUri = Uri.fromFile(file);
+ }
+
+ // Get a handle for the content resolver.
+ ContentResolver contentResolver = context.getContentResolver();
+
+ // Create an open intent with `ACTION_VIEW`.
+ Intent openIntent = new Intent(Intent.ACTION_VIEW);
+
+ // Set the URI and the MIME type.
+ if (filePathString.endsWith("apk") || filePathString.endsWith("APK")) { // Force detection of APKs.
+ openIntent.setDataAndType(fileUri, MimeTypeMap.getSingleton().getMimeTypeFromExtension("apk"));
+ } else { // Autodetect the MIME type.
+ openIntent.setDataAndType(fileUri, contentResolver.getType(fileUri));
+ }
+
+ // Allow the app to read the file URI.
+ openIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+
+ // Try the intent.
+ try {
+ // Show the chooser.
+ activity.startActivity(openIntent);
+ } catch (ActivityNotFoundException exception) { // There are no apps available to open the URL.
+ // Show a snackbar with the error.
+ Snackbar.make(noSwipeViewPager, activity.getString(R.string.error) + " " + exception, Snackbar.LENGTH_INDEFINITE).show();
+ }
+ });
+ }
+
+ // Show the file saved snackbar.
+ fileSavedSnackbar.show();
} else {
+ // Display the file saving error.
Snackbar.make(noSwipeViewPager, activity.getString(R.string.error_saving_file) + " " + saveDisposition, Snackbar.LENGTH_INDEFINITE).show();
}
}
projects / PrivacyBrowserAndroid.git / blobdiff