Update FileListAdapter.java

Author: Zenlua

app/src/main/java/com/example/rootfilepicker/FileListAdapter.java

@@ -1,54 +1,61 @@
-
-// FileListAdapter.java
-package com.example.rootfilepicker;
-
-import android.content.Context;
-import android.view.*;
-import android.widget.*;
-import java.io.File;
-import java.util.List;
-
-public class FileListAdapter extends BaseAdapter {
+public class FileListAdapter extends BaseAdapter implements Filterable {
+    private List<FileItem> originalList;
+    private List<FileItem> filteredList;
     private final Context context;
-    private final List<FileItem> items;
-    private final List<FileItem> selected;
 
-    public FileListAdapter(Context context, List<FileItem> items, List<FileItem> selected) {
+    public FileListAdapter(Context context, List<FileItem> data) {
         this.context = context;
-        this.items = items;
-        this.selected = selected;
+        this.originalList = data;
+        this.filteredList = new ArrayList<>(data);
     }
 
     @Override
     public int getCount() {
-        return items.size();
+        return filteredList.size();
     }
 
     @Override
-    public Object getItem(int i) {
-        return items.get(i);
+    public Object getItem(int position) {
+        return filteredList.get(position);
     }
 
     @Override
-    public long getItemId(int i) {
-        return i;
+    public long getItemId(int position) {
+        return position;
     }
 
     @Override
-    public View getView(int i, View view, ViewGroup viewGroup) {
-        if (view == null) {
-            view = LayoutInflater.from(context).inflate(R.layout.item_file, viewGroup, false);
-        }
-
-        TextView name = view.findViewById(R.id.name);
-        ImageView icon = view.findViewById(R.id.icon);
-        ImageView check = view.findViewById(R.id.check);
-
-        File file = items.get(i).getFile();
-        name.setText(file.getName());
-        icon.setImageResource(file.isDirectory() ? android.R.drawable.ic_menu_agenda : android.R.drawable.ic_menu_save);
-        check.setVisibility(selected.contains(items.get(i)) ? View.VISIBLE : View.INVISIBLE);
+    public View getView(int position, View convertView, ViewGroup parent) {
+        // inflate and bind view...
+    }
 
-        return view;
+    @Override
+    public Filter getFilter() {
+        return new Filter() {
+            @Override
+            protected FilterResults performFiltering(CharSequence constraint) {
+                List<FileItem> results = new ArrayList<>();
+                if (constraint == null || constraint.length() == 0) {
+                    results.addAll(originalList);
+                } else {
+                    String query = constraint.toString().toLowerCase();
+                    for (FileItem item : originalList) {
+                        if (item.getFile().getName().toLowerCase().contains(query)) {
+                            results.add(item);
+                        }
+                    }
+                }
+                FilterResults filterResults = new FilterResults();
+                filterResults.values = results;
+                return filterResults;
+            }
+
+            @Override
+            protected void publishResults(CharSequence constraint, FilterResults results) {
+                filteredList.clear();
+                filteredList.addAll((List<FileItem>) results.values);
+                notifyDataSetChanged();
+            }
+        };
     }
 }