* Added an error message when no file was selected

* Fixed an issue that could cause the file hash utility to not generate hashes

Author: CodeDead

app/src/main/java/com/codedead/deadhash/gui/MainActivity.java

@@ -130,8 +130,13 @@ protected void onCreate(final Bundle savedInstanceState) {
             } else {
                 navigationView.setCheckedItem(navigationView.getMenu().getItem(0).getSubMenu().getItem(flipperPosition).getItemId());
             }
+
+            if (!savedInstanceState.getBoolean("KEEP_FILE")) {
+                deleteTempFile();
+            }
         } else {
             navigationView.setCheckedItem(navigationView.getMenu().getItem(0).getSubMenu().getItem(0).getItemId());
+            deleteTempFile();
         }
 
         spnLanguages = findViewById(R.id.SpnLanguages);
@@ -150,8 +155,12 @@ protected void onCreate(final Bundle savedInstanceState) {
         loadSettingsContent();
 
         loadAlertContent();
+    }
 
-        // Cleanup of previous runs, if applicable
+    /**
+     * Delete the temporary file to save storage
+     */
+    private void deleteTempFile() {
         final File f = new File(getApplicationContext().getCacheDir(), tmpFile);
         if (f.exists()) {
             //noinspection ResultOfMethodCallIgnored
@@ -296,9 +305,12 @@ public void onClick(View v) {
 
         btnGenerate.setOnClickListener(new View.OnClickListener() {
             @Override
-            public void onClick(View v) {
+            public void onClick(final View v) {
                 if (fileLoading) return;
-                if (!new File(getApplicationContext().getCacheDir(), tmpFile).exists()) return;
+                if (!new File(getBaseContext().getCacheDir(), tmpFile).exists()) {
+                    Toast.makeText(getApplicationContext(), R.string.error_no_file, Toast.LENGTH_LONG).show();
+                    return;
+                }
 
                 mRecyclerViewFile.setAdapter(null);
 
@@ -593,25 +605,26 @@ private void saveSettings(final String lang, final boolean md5, final boolean sh
     }
 
     @Override
-    public void onSaveInstanceState(Bundle savedInstanceState) {
+    public void onSaveInstanceState(final Bundle savedInstanceState) {
         savedInstanceState.putInt("TAB_NUMBER", viewFlipper.getDisplayedChild());
         savedInstanceState.putString("FILE_PATH", edtFilePath.getText().toString());
         savedInstanceState.putString("FILE_COMPARE", edtFileCompare.getText().toString());
         savedInstanceState.putParcelableArrayList("FILE_KEY", fileDataArrayList);
         savedInstanceState.putString("TEXT_DATA", edtTextData.getText().toString());
         savedInstanceState.putString("TEXT_COMPARE", edtTextCompare.getText().toString());
         savedInstanceState.putParcelableArrayList("TEXT_KEY", textDataArrayList);
+        savedInstanceState.putBoolean("KEEP_FILE", true);
         super.onSaveInstanceState(savedInstanceState);
     }
 
     @Override
-    public void onConfigurationChanged(@NonNull Configuration newConfig) {
+    public void onConfigurationChanged(@NonNull final Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
         LocaleHelper.onAttach(getBaseContext());
     }
 
     @Override
-    protected void attachBaseContext(Context base) {
+    protected void attachBaseContext(final Context base) {
         super.attachBaseContext(LocaleHelper.onAttach(base));
     }
 
@@ -639,7 +652,7 @@ public void run() {
     }
 
     @Override
-    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
+    public boolean onNavigationItemSelected(@NonNull final MenuItem item) {
         int page = 0;
 
         switch (item.getItemId()) {
@@ -665,7 +678,7 @@ public boolean onNavigationItemSelected(@NonNull MenuItem item) {
     }
 
     @Override
-    public void hashDataFile(List<HashData> data) {
+    public void hashDataFile(final List<HashData> data) {
         fileLoading = false;
         pgbFile.setVisibility(View.GONE);
 
@@ -696,7 +709,7 @@ protected void onActivityResult(final int requestCode, final int resultCode, @Nu
                     try (final InputStream selectedFileStream = getContentResolver().openInputStream(selectedFileUri)) {
                         final File outputFile = new File(getApplicationContext().getCacheDir(), tmpFile);
 
-                        try (final FileOutputStream outputStream = new FileOutputStream(outputFile)) {
+                        try (final FileOutputStream outputStream = new FileOutputStream(outputFile, false)) {
                             if (selectedFileStream != null) {
                                 StreamUtility.copyStream(selectedFileStream, outputStream);
                                 edtFilePath.setText(selectedFileUri.getPath());

app/src/main/res/values-de/strings.xml

@@ -45,4 +45,5 @@
     <string name="dialog_select_file">Wählen Sie eine Datei aus</string>
     <string name="error_copy_file">Es kann keine Kopie der ausgewählten Datei erstellt werden!</string>
     <string name="error_open_file">Die ausgewählte Datei kann nicht geöffnet werden!</string>
+    <string name="error_no_file">Es wurde keine Datei ausgewählt!</string>
 </resources>

app/src/main/res/values-fr/strings.xml

@@ -45,4 +45,5 @@
     <string name="dialog_select_file">Sélectionner un fichier</string>
     <string name="error_copy_file">Impossible de créer une copie du fichier sélectionné!</string>
     <string name="error_open_file">Impossible d\'ouvrir le fichier sélectionné!</string>
+    <string name="error_no_file">Aucun fichier n\'a été sélectionné!</string>
 </resources>

app/src/main/res/values-it/strings.xml

@@ -45,4 +45,5 @@
     <string name="dialog_select_file">Seleziona un file</string>
     <string name="error_copy_file">Impossibile creare una copia del file selezionato!</string>
     <string name="error_open_file">Impossibile aprire il file selezionato!</string>
+    <string name="error_no_file">Nessun file è stato selezionato!</string>
 </resources>

app/src/main/res/values-nl/strings.xml

@@ -45,4 +45,5 @@
     <string name="dialog_select_file">Selecteer een bestand</string>
     <string name="error_copy_file">Kon geen kopie van het bestand maken!</string>
     <string name="error_open_file">Kon het geselecteerde bestand niet openen!</string>
+    <string name="error_no_file">Geen bestand geselecteerd!</string>
 </resources>

app/src/main/res/values-pt-rBR/strings.xml

@@ -45,4 +45,5 @@
     <string name="dialog_select_file">Selecione um arquivo</string>
     <string name="error_copy_file">Não foi possível criar uma cópia do arquivo selecionado!</string>
     <string name="error_open_file">Não foi possível abrir o arquivo selecionado!</string>
+    <string name="error_no_file">Nenhum arquivo foi selecionado!</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -57,6 +57,7 @@
     <string name="dialog_select_file">Select a file</string>
     <string name="error_open_file">Unable to open the selected file!</string>
     <string name="error_copy_file">Unable to create a copy of the selected file!</string>
+    <string name="error_no_file">No file was selected!</string>
 
     <string-array name="array_languages" translatable="false">
         <item>English</item>