扩展基本适配器的联系人姓名的搜索选项

Question

我正在尝试为与联系人图像和联系人姓名一起显示的联系人列表实现搜索选项。

我创建了一个文本框来输入搜索文本。

contactnameadpater.java：扩展基本适配器。

代码如下：

 public class ContactNamesAdapter extends BaseAdapter implements Filterable
  {
    private Activity activity;
    private ArrayList<HashMap<String, String>> originalData;
    private ArrayList<HashMap<String, String>> filteredData;



    private static LayoutInflater inflater=null;

  public ContactNamesAdapter(Activity a, ArrayList<HashMap<String, String>> d)
   {
    activity = a;
    originalData=d;


     inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 }

public int getCount() 
{       
    return originalData.size();         
}

public Object getItem(int position) {
    return position;
}

public long getItemId(int position)
{

    return position;
}

public View getView(int position, View convertView, ViewGroup parent) 
{
    View vi=convertView;
    if(convertView==null)

        vi = inflater.inflate(R.layout.contacts_row, null);


    ImageView profile  = (ImageView)vi.findViewById(R.id.ContactImage);                 
    Uri my_contact_Uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_URI, String.valueOf(originalData.get(position).get("id")));
    InputStream photo_stream = ContactsContract.Contacts.openContactPhotoInputStream(ContactNamesAdapter.inflater.getContext().getContentResolver(),my_contact_Uri);            
    if(photo_stream != null) 
    {
        BufferedInputStream buf =new BufferedInputStream(photo_stream);
        Bitmap my_btmp = BitmapFactory.decodeStream(buf);
        profile.setImageBitmap(my_btmp);

    }
    else
    {
        profile.setImageResource(R.drawable.no_pic);
    }

    TextView name = (TextView)vi.findViewById(R.id.name);
    name.setText(originalData.get(position).get("name"));   

    return vi;

}


@Override
public Filter getFilter()
{
    return new Filter()
    {
        private ArrayList<HashMap<String, String>> filteredResultsData;

        @Override
        protected FilterResults performFiltering(CharSequence charSequence)
        {
            FilterResults results = new FilterResults();

            //If there's nothing to filter on, return the original data for your list
            if(charSequence == null || charSequence.length() == 0)
            {
                results.values = originalData;
                results.count = originalData.size();
            }
            else
            {
                ArrayList<HashMap<String,String>> filterResultsData = new ArrayList<HashMap<String,String>>();

                for(HashMap<String,String> data : originalData)
                {

                    if(originalData == filterResultsData )
                    {
                        filterResultsData.add(data);

                    }

                }            

                results.values = filterResultsData;
                results.count = filteredResultsData.size();
            }

            return results;
        }

        @Override
        protected void publishResults(CharSequence charSequence, FilterResults filterResults)
        {
            filteredData = (ArrayList<HashMap<String,String>>)filterResults.values;
            notifyDataSetChanged();
        }
    };
}

contactname.java：扩展一个活动。

创建时：

DetailsList = new ArrayList<HashMap<String, String>>();


    contactList = (ListView) findViewById(R.id.ContactNamelist);

    profileImage = (ImageView) findViewById(R.id.ContactImage);

    inputSearch = (EditText) findViewById(R.id.inputSearch);

    getContactName();

            contactList.setTextFilterEnabled(true);


    inputSearch.addTextChangedListener(new TextWatcher() 
    {

        @Override
        public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
            // When user changed the Text
            adapter.getFilter().filter(cs.toString());  
            //adapter.getFilter().filter(cs);   
            Log.e("getfilter","getfilter");
            contactList.setAdapter(adapter);
        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                int arg3) {

        }

        @Override
        public void afterTextChanged(Editable arg0) {
        }
    });

}

在getContactName()下：

      public void getContactName()
    {
    final Uri uri = ContactsContract.Contacts.CONTENT_URI;
    final String[] projection = new String[] {
            ContactsContract.Contacts._ID,
            ContactsContract.Contacts.DISPLAY_NAME,
            ContactsContract.Contacts.PHOTO_ID
    };


    String selection  = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '1'";
    final String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
    Cursor cur = getContentResolver().query(uri, projection, selection,  null, sortOrder);

    if (cur.getCount() > 0) 
    {
        while (cur.moveToNext()) 
        {
            String Sid = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
            String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

            HashMap<String, String> map = new HashMap<String, String>();

            map.put("name", name);
            map.put("id", Sid);

            DetailsList.add( map);

        }
    }
    cur.close(); 


    adapter = new ContactNamesAdapter(this, DetailsList); 

    // updating listview
    contactList.setAdapter(adapter);
}

问题是在搜索框中输入文本后我没有得到结果。我不确定我哪里出错了？

让我知道如何解决这个问题？

谢谢！

Answer 1

您可能想查看此链接。 Click Here to see Searchview

这是一个很好的 SearchView 或使用下面我的 SearchView 这是我在列表视图上的搜索方法

search.addTextChangedListener(new TextWatcher() { //search is a edittext object

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                textlength = search.getText().length(); //textlength is a global variable

                filtered_text = new ArrayList<RowItem>(); //global array list
                for (int i = 0; i < employee.length(); i++)
                {

                    if(rowItems.get(i).getTitle().toString().toUpperCase().contains(search.getText().toString().toUpperCase())) //rowItem is an object of my holder class for Custom Adapter
                    {
                     //Adding image and names which match the search criteria 
                       in filtered_text array list
                                String mDrawableName;
                                try {
                                    mDrawableName = employee.getJSONObject(i).getString("image");
                                    int resID = getResources().getIdentifier(mDrawableName , "drawable", getPackageName());
                                    RowItem item = new RowItem(resID, rowItems.get(i).getTitle());
                                    filtered_text.add(item);
                                } catch (JSONException e) {e.printStackTrace();}
                            }


                        }
                        adapter = new CustomBaseAdapter(YourClass.this, filtered_text);
                        listView.setAdapter(adapter);

                    }

                    @Override
                    public void beforeTextChanged(CharSequence s, int start, int count,
                            int after) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void afterTextChanged(Editable s) {
                        // TODO Auto-generated method stub

                    }
                });