Import+Export activity: removed "require twice back navigation".

onBackPressed() is not support anymore as of Android gradle plugin 8.11.0

src/main/java/de/dennisguse/opentracks/io/file/exporter/ExportActivity.java

@@ -21,7 +21,6 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.util.Log;
 import android.view.View;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -95,8 +94,6 @@ public class ExportActivity extends AppCompatActivity implements ExportService.E
     private int trackExportSkippedCount;
     private int trackExportTotalCount;
 
-    boolean doubleBackToCancel = false;
-
     private ExportActivityBinding viewBinding;
 
     private ArrayList<String> trackErrors = new ArrayList<>();
@@ -214,19 +211,6 @@ public class ExportActivity extends AppCompatActivity implements ExportService.E
         exportTasks.clear();
     }
 
-    @Override
-    public void onBackPressed() {
-        if (doubleBackToCancel || getTotalDone() == trackExportTotalCount) {
-            super.onBackPressed();
-            return;
-        }
-
-        this.doubleBackToCancel = true;
-        Toast.makeText(this, getString(R.string.generic_click_twice_cancel), Toast.LENGTH_SHORT).show();
-
-        new Handler().postDelayed(() -> doubleBackToCancel = false, 2000);
-    }
-
     private void createExportTasks(boolean allInOneFile) {
         List<Track> tracks = contentProviderUtils.getTracks();
         exportTasks = new ArrayList<>();

src/main/java/de/dennisguse/opentracks/io/file/importer/ImportActivity.java

@@ -20,9 +20,7 @@ import android.content.ClipData;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
-import android.os.Handler;
 import android.view.View;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.core.content.ContextCompat;
@@ -56,8 +54,6 @@ public class ImportActivity extends FragmentActivity {
 
     private ImportActivityBinding viewBinding;
 
-    boolean doubleBackToCancel = false;
-
     private ArrayList<Uri> documentUris = new ArrayList<>();
     private boolean isDirectory;
 
@@ -122,21 +118,6 @@ public class ImportActivity extends FragmentActivity {
         outState.putBoolean(BUNDLE_IS_DIRECTORY, isDirectory);
     }
 
-    @Override
-    public void onBackPressed() {
-        if (doubleBackToCancel || (summary != null && getTotalDone() == summary.getTotalCount())) {
-            super.onBackPressed();
-            viewModel.cancel();
-            getViewModelStore().clear();
-            return;
-        }
-
-        this.doubleBackToCancel = true;
-        Toast.makeText(this, getString(R.string.generic_click_twice_cancel), Toast.LENGTH_SHORT).show();
-
-        new Handler().postDelayed(() -> doubleBackToCancel=false, 2000);
-    }
-
     private void initViews() {
         viewBinding.importProgressDone.setText("0");
         viewBinding.importProgressTotal.setText("0");