import android.content.res.Configuration;
import android.media.MediaScannerConnection;
import android.net.Uri;
-import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.TypedValue;
import android.view.View;
import android.view.WindowManager;
import android.widget.EditText;
+import android.widget.ScrollView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import com.google.android.material.snackbar.Snackbar;
import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.asynctasks.GetLogcat;
import com.stoutner.privacybrowser.dialogs.StoragePermissionDialog;
import com.stoutner.privacybrowser.dialogs.SaveLogcatDialog;
import com.stoutner.privacybrowser.helpers.FileNameHelper;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
-import java.lang.ref.WeakReference;
import java.nio.charset.StandardCharsets;
public class LogcatActivity extends AppCompatActivity implements SaveLogcatDialog.SaveLogcatListener, StoragePermissionDialog.StoragePermissionDialogListener {
+ // Initialize the saved instance state constants.
+ private final String SCROLLVIEW_POSITION = "scrollview_position";
+
+ // Define the class variables.
private String filePathString;
+ // Define the class views.
+ private TextView logcatTextView;
+
@Override
public void onCreate(Bundle savedInstanceState) {
// Get a handle for the shared preferences.
// Display the the back arrow in the action bar.
actionBar.setDisplayHomeAsUpEnabled(true);
+ // Populate the class views.
+ logcatTextView = findViewById(R.id.logcat_textview);
+
// Implement swipe to refresh.
SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.logcat_swiperefreshlayout);
swipeRefreshLayout.setOnRefreshListener(() -> {
// Get the current logcat.
- new GetLogcat(this).execute();
+ new GetLogcat(this, 0).execute();
});
// Get the current theme status.
// Set the swipe refresh background color.
swipeRefreshLayout.setProgressBackgroundColorSchemeColor(colorBackgroundInt);
+ // Initialize the scrollview Y position int.
+ int scrollViewYPositionInt = 0;
+
+ // Check to see if the activity has been restarted.
+ if (savedInstanceState != null) {
+ // Get the saved scrollview position.
+ scrollViewYPositionInt = savedInstanceState.getInt(SCROLLVIEW_POSITION);
+ }
+
// Get the logcat.
- new GetLogcat(this).execute();
+ new GetLogcat(this, scrollViewYPositionInt).execute();
}
@Override
// Get a handle for the clipboard manager.
ClipboardManager clipboardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
- // Get a handle for the logcat text view.
- TextView logcatTextView = findViewById(R.id.logcat_textview);
-
// Save the logcat in a ClipData.
ClipData logcatClipData = ClipData.newPlainText(getString(R.string.logcat), logcatTextView.getText());
process.waitFor();
// Reload the logcat.
- new GetLogcat(this).execute();
+ new GetLogcat(this, 0).execute();
} catch (IOException|InterruptedException exception) {
// Do nothing.
}
}
}
+ @Override
+ public void onSaveInstanceState(@NonNull Bundle savedInstanceState) {
+ // Run the default commands.
+ super.onSaveInstanceState(savedInstanceState);
+
+ // Get a handle for the logcat scrollview.
+ ScrollView logcatScrollView = findViewById(R.id.logcat_scrollview);
+
+ // Get the scrollview Y position.
+ int scrollViewYPositionInt = logcatScrollView.getScrollY();
+
+ // Store the scrollview Y position in the bundle.
+ savedInstanceState.putInt(SCROLLVIEW_POSITION, scrollViewYPositionInt);
+ }
+
@Override
public void onSaveLogcat(DialogFragment dialogFragment) {
// Get a handle for the dialog fragment.
// Save the logcat.
saveLogcat(filePathString);
} else { // The storage permission was not granted.
- // Get a handle for the logcat text view.
- TextView logcatTextView = findViewById(R.id.logcat_textview);
-
// Display an error snackbar.
Snackbar.make(logcatTextView, getString(R.string.cannot_use_location), Snackbar.LENGTH_LONG).show();
}
}
private void saveLogcat(String fileNameString) {
- // Get a handle for the logcat text view.
- TextView logcatTextView = findViewById(R.id.logcat_textview);
-
try {
// Get the logcat as a string.
String logcatString = logcatTextView.getText().toString();
}
}
}
-
- // `Void` does not declare any parameters. `Void` does not declare progress units. `String` contains the results.
- private static class GetLogcat extends AsyncTask<Void, Void, String> {
- // Create a weak reference to the calling activity.
- private final WeakReference<Activity> activityWeakReference;
-
- // Populate the weak reference to the calling activity.
- GetLogcat(Activity activity) {
- activityWeakReference = new WeakReference<>(activity);
- }
-
- @Override
- protected String doInBackground(Void... parameters) {
- // Get a handle for the activity.
- Activity activity = activityWeakReference.get();
-
- // Abort if the activity is gone.
- if ((activity == null) || activity.isFinishing()) {
- return "";
- }
-
- // Create a log string builder.
- StringBuilder logStringBuilder = new StringBuilder();
-
- try {
- // Get the logcat. `-b all` gets all the buffers (instead of just crash, main, and system). `-v long` produces more complete information. `-d` dumps the logcat and exits.
- Process process = Runtime.getRuntime().exec("logcat -b all -v long -d");
-
- // Wrap the logcat in a buffered reader.
- BufferedReader logBufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
-
- // Create a log transfer string.
- String logTransferString;
-
- // Use the log transfer string to copy the logcat from the buffered reader to the string builder.
- while ((logTransferString = logBufferedReader.readLine()) != null) {
- // Append a line.
- logStringBuilder.append(logTransferString);
-
- // Append a line break.
- logStringBuilder.append("\n");
- }
-
- // Close the buffered reader.
- logBufferedReader.close();
- } catch (IOException exception) {
- // Do nothing.
- }
-
- // Return the logcat.
- return logStringBuilder.toString();
- }
-
- // `onPostExecute()` operates on the UI thread.
- @Override
- protected void onPostExecute(String logcatString) {
- // Get a handle for the activity.
- Activity activity = activityWeakReference.get();
-
- // Abort if the activity is gone.
- if ((activity == null) || activity.isFinishing()) {
- return;
- }
-
- // Get handles for the views.
- TextView logcatTextView = activity.findViewById(R.id.logcat_textview);
- SwipeRefreshLayout swipeRefreshLayout = activity.findViewById(R.id.logcat_swiperefreshlayout);
-
- // Display the logcat.
- logcatTextView.setText(logcatString);
-
- // Stop the swipe to refresh animation if it is displayed.
- swipeRefreshLayout.setRefreshing(false);
- }
- }
}
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projects / PrivacyBrowserAndroid.git / blobdiff