如何在listview中搜索（片段android）？

Question

如何在ListView进行搜索？

listView.setFilterText(newText); 

不行。

有任何解决此问题的想法吗？

我有一个ListView，我添加了一些文件。我想在这个文件中进行搜索并显示用户文件。

您可以查看截图：

FragmentFolder.java：

public class FragmentFolder extends Fragment{

    static Context context;
    public static Fragment fragment;
    ListView listView;
    private File currentFolder;
    private FileArrayAdapter fileArrayListAdapter;
    private FileFilter fileFilter;
    private File fileSelected;
    private ArrayList<String> extensions;
    SharedPreferences sPref;
    boolean checker;
    Bitmap bmThumbnail;
    ImageView img;
    String path;
    boolean good = false;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v =  inflater.inflate(R.layout.fragment_foler, container, false);
        context = v.getContext();
        fragment = this;
//TODO: ЧТОБЫ БЫЛО ВИДНО ПОИСК - УБЕРИ КОММЕНТАРИИ
        setHasOptionsMenu(true);
        SharedPreferences sharedPrefs = getActivity().getSharedPreferences("com.fug.video.player", MODE_PRIVATE);
        checker = sharedPrefs.getBoolean("filefilter", true);

        listView = (ListView)v.findViewById(R.id.gridView);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                FileInfo fileDescriptor = fileArrayListAdapter.getItem(position);
                if (fileDescriptor.isFolder() || fileDescriptor.isParent()) {
                    currentFolder = new File(fileDescriptor.getPath());
                    fill(currentFolder);
                } else {
                    /** Нужно проверить на расширение файла */
                    fileSelected = new File(fileDescriptor.getPath());
                    Intent intent = new Intent(context, PlayerActivity.class);
                    intent.putExtra("DATA", fileSelected.getAbsolutePath());
                    context.startActivity(intent);
                    Log.i("FILE CHOOSER", "result ok");
                }
                }
        });

        currentFolder = new File(Environment.getExternalStorageDirectory()
                .getAbsolutePath());
        fill(currentFolder);

        return v;
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
       inflater.inflate(R.menu.main, menu);

        MenuItem searchItem = menu.findItem(R.id.action_search);
        SearchView searchView = (SearchView) searchItem.getActionView();
        SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
        if(null!=searchManager ) {
            searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
        }
        searchView.setIconifiedByDefault(false);
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                //listView.setFilterText(query.toString());
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                //Поиск realtime
                listView.setFilterText(newText);
                return true;
            }

        });
        super.onCreateOptionsMenu(menu, inflater);
    }

    private void fill(File f) {
        File[] folders = null;
        if (fileFilter != null)
            folders = f.listFiles(fileFilter);
        else
            folders = f.listFiles();

        //this.setTitle(getString(R.string.currentDir) + ": " + f.getName());
        List<FileInfo> dirs = new ArrayList<FileInfo>();
        List<FileInfo> files = new ArrayList<FileInfo>();
        try {
            for (File file : folders) {
                if (file.isDirectory() && !file.isHidden())
                    //si es un directorio en el data se ponemos la contante folder
                    dirs.add(new FileInfo(file.getName(),
                            Constants.FOLDER, file.getAbsolutePath(),
                            true, false));
                else {

                    if (!file.isHidden() ) {
                        if ( file.getName().endsWith(Constants.MP4) ||file.getName().endsWith(Constants.MOV) ||file.getName().endsWith(Constants.M4V) ||file.getName().endsWith(Constants.FLV) || file.getName().endsWith(Constants.AVI) || file.getName().endsWith(Constants.GPP3) || file.getName().endsWith(Constants.WEBM) || file.getName().endsWith(Constants.MAT)) {
                           // bmThumbnail = ThumbnailUtils.createVideoThumbnail(file.getPath(), MediaStore.Video.Thumbnails.MINI_KIND);
                            path = file.getPath();

                            files.add(new FileInfo(file.getName(),
                                    getString(R.string.fileSize) + ": "
                                            + file.length(),
                                    file.getAbsolutePath(),  false, false));
//                                    good = true;
                            //img.setImageBitmap(bmThumbnail);


//                            Glide.with(context)
//                                .load(file)
//                                .into(img);
                        }
                    }
//                    else {
//                        //Showall files
//                        files.add(new FileInfo(file.getName(),
//                                getString(R.string.fileSize) + ": "
//                                        + file.length(),
//                                file.getAbsolutePath(), false, false));
//                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        Collections.sort(dirs);
        Collections.sort(files);
        dirs.addAll(files);
        if (!f.getName().equalsIgnoreCase(
                Environment.getExternalStorageDirectory().getName())) {
            if (f.getParentFile() != null)
                //si es un directorio padre en el data se ponemos la contante adeacuada
                dirs.add(0, new FileInfo("..",
                        Constants.PARENT_FOLDER, f.getParent(),
                        false, true));
        }

        fileArrayListAdapter = new FileArrayAdapter(context,
                R.layout.file_row, dirs);
        listView.setAdapter(fileArrayListAdapter);
    }

}

Answer 1

尝试使用以下代码，这将适合您。

  

这是我为您编写的函数，您必须调用此函数并将文件路径传递给它...然后它将使用所需的搜索词搜索文件的名称并返回具有该文件的文件列表那些名字。

 public void walkdir(File dir) {
    String sPattern = "searching_word";

    File listFile[] = dir.listFiles();

    if (listFile != null) {
        for (int i = 0; i < listFile.length; i++) {

            if (listFile[i].isDirectory()) {
                walkdir(listFile[i]);
            } else {
              if (listFile[i].getName().startsWith(sPattern)){

                 //Display that file in list

              }
            }
        }
    }    
}

要搜索整个SD卡，请使用

调用此函数

walkdir(Environment.getExternalStorageDirectory());