/*
- * Copyright © 2019 Soren Stoutner <soren@stoutner.com>.
+ * Copyright © 2019-2020 Soren Stoutner <soren@stoutner.com>.
*
* This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
*
package com.stoutner.privacybrowser.asynctasks;
import android.app.Activity;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
+import android.net.Uri;
import android.os.AsyncTask;
+import android.os.Build;
+import android.view.View;
+
+import androidx.core.content.FileProvider;
import com.google.android.material.snackbar.Snackbar;
import com.stoutner.privacybrowser.R;
import com.stoutner.privacybrowser.views.NestedScrollWebView;
-import com.stoutner.privacybrowser.views.NoSwipeViewPager;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.lang.ref.WeakReference;
-public class SaveWebpageImage extends AsyncTask<String, Void, String> {
- // Define the weak references.
+public class SaveWebpageImage extends AsyncTask<Void, Void, String> {
+ // Declare the weak references.
+ private WeakReference<Context> contextWeakReference;
private WeakReference<Activity> activityWeakReference;
private WeakReference<NestedScrollWebView> nestedScrollWebViewWeakReference;
- // Define a success string constant.
+ // Declare the class constants.
private final String SUCCESS = "Success";
- // Define the saving image snackbar and the webpage bitmap.
+ // Declare the class variables.
private Snackbar savingImageSnackbar;
private Bitmap webpageBitmap;
+ private String filePathString;
// The public constructor.
- public SaveWebpageImage(Activity activity, NestedScrollWebView nestedScrollWebView) {
+ public SaveWebpageImage(Context context, Activity activity, String filePathString, NestedScrollWebView nestedScrollWebView) {
// Populate the weak references.
+ contextWeakReference = new WeakReference<>(context);
activityWeakReference = new WeakReference<>(activity);
nestedScrollWebViewWeakReference = new WeakReference<>(nestedScrollWebView);
+
+ // Populate the class variables.
+ this.filePathString = filePathString;
}
// `onPreExecute()` operates on the UI thread.
@Override
protected void onPreExecute() {
- // Get a handle for the activity and the nested scroll WebView.
+ // Get handles for the activity and the nested scroll WebView.
Activity activity = activityWeakReference.get();
NestedScrollWebView nestedScrollWebView = nestedScrollWebViewWeakReference.get();
}
// Create a saving image snackbar.
- savingImageSnackbar = Snackbar.make(nestedScrollWebView, R.string.saving_image, Snackbar.LENGTH_INDEFINITE);
+ savingImageSnackbar = Snackbar.make(nestedScrollWebView, activity.getString(R.string.processing_image) + " " + filePathString, Snackbar.LENGTH_INDEFINITE);
// Display the saving image snackbar.
savingImageSnackbar.show();
}
@Override
- protected String doInBackground(String... fileName) {
+ protected String doInBackground(Void... Void) {
// Get a handle for the activity.
Activity activity = activityWeakReference.get();
// Create a webpage PNG byte array output stream.
ByteArrayOutputStream webpageByteArrayOutputStream = new ByteArrayOutputStream();
- // Convert the bitmap to a PNG. `0` is for lossless compression (the only option for a PNG). This compression takes a long time.
+ // Convert the bitmap to a PNG. `0` is for lossless compression (the only option for a PNG). This compression takes a long time. Once the minimum API >= 30 this could be replaced with WEBP_LOSSLESS.
webpageBitmap.compress(Bitmap.CompressFormat.PNG, 0, webpageByteArrayOutputStream);
// Get a file for the image.
- File imageFile = new File(fileName[0]);
+ File imageFile = new File(filePathString);
// Delete the current file if it exists.
if (imageFile.exists()) {
// Write the webpage image to the image file.
webpageByteArrayOutputStream.writeTo(imageFileOutputStream);
+
+ // Create 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(imageFile));
+
+ // Make it so.
+ activity.sendBroadcast(mediaScannerIntent);
} catch (Exception exception) {
// Store the error in the file creation disposition string.
fileCreationDisposition = exception.toString();
// `onPostExecute()` operates on the UI thread.
@Override
protected void onPostExecute(String fileCreationDisposition) {
- // Get a handle for the activity.
+ // Get handles for the weak references.
+ Context context = contextWeakReference.get();
Activity activity = activityWeakReference.get();
+ NestedScrollWebView nestedScrollWebView = nestedScrollWebViewWeakReference.get();
// Abort if the activity is gone.
if ((activity == null) || activity.isFinishing()) {
return;
}
- // Get a handle for the no swipe view pager.
- NoSwipeViewPager noSwipeViewPager = activity.findViewById(R.id.webviewpager);
-
// Dismiss the saving image snackbar.
savingImageSnackbar.dismiss();
// Display a file creation disposition snackbar.
if (fileCreationDisposition.equals(SUCCESS)) {
- Snackbar.make(noSwipeViewPager, R.string.image_saved, Snackbar.LENGTH_SHORT).show();
+ // Create a file saved snackbar.
+ Snackbar imageSavedSnackbar = Snackbar.make(nestedScrollWebView, activity.getString(R.string.file_saved) + " " + filePathString, Snackbar.LENGTH_SHORT);
+
+ // Add an open action.
+ imageSavedSnackbar.setAction(R.string.open, (View view) -> {
+ // Get a file for the file path string.
+ File file = new File(filePathString);
+
+ // Declare 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);
+
+ // 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);
+
+ // Show the chooser.
+ activity.startActivity(Intent.createChooser(openIntent, context.getString(R.string.open)));
+ });
+
+ // Show the image saved snackbar.
+ imageSavedSnackbar.show();
} else {
- Snackbar.make(noSwipeViewPager, activity.getString(R.string.error_saving_image) + " " + fileCreationDisposition, Snackbar.LENGTH_INDEFINITE).show();
+ // Display the file saving error.
+ Snackbar.make(nestedScrollWebView, activity.getString(R.string.error_saving_file) + " " + fileCreationDisposition, Snackbar.LENGTH_INDEFINITE).show();
}
}
}
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