Question

我从我的应用程序中获取了联系人并在列表视图中显示了它。我想在listview上添加一个搜索栏。我曾尝试过以下代码。但它没有正常工作。这是我正在处理的代码：

et.addTextChangedListener(new TextWatcher() {

      @SuppressLint("ShowToast")
    @Override
      public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
          // When user changed the Text
     Toast.makeText(context, cs.toString()+"", Toast.LENGTH_SHORT).show();
    new MyBaseAdapter(context, myList).getFilter().filter(cs.toString());   
      }

      @Override
      public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
              int arg3) {
          // TODO Auto-generated method stub

      }

      @Override
      public void afterTextChanged(Editable arg0) {
          // TODO Auto-generated method stub

      }
  });

这是getFiletr方法：

public Filter getFilter() {
    // TODO Auto-generated method stub
    Filter filter=new Filter(){

        protected void publishResults(CharSequence constraint,
                FilterResults results) {
            // TODO Auto-generated method stub
            Toast.makeText(context, "inside publish", Toast.LENGTH_SHORT).show();
           Log.d("inside publish", "inside publish");
            mDisplayedValues = (ArrayList<ListData>) results.values; 
            notifyDataSetChanged();  
        }
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            // TODO Auto-generated method stub
             FilterResults results = new FilterResults(); 
             ArrayList<ListData> FilteredArrList = new ArrayList<ListData>();
             Toast.makeText(context, "inside perform", Toast.LENGTH_SHORT).show();
             Log.d("insde perform", "inside perform");
             if (mOriginalValues == null) {
                 Toast.makeText(context, "original data is null", Toast.LENGTH_SHORT).show();
                 Log.d("original data is null", "original data is null");   
                 mOriginalValues = new ArrayList<ListData>(mDisplayedValues); // saves the original data in mOriginalValues
                }

             if (constraint == null || constraint.length() == 0) {
                 Toast.makeText(context, "constraint is null", Toast.LENGTH_SHORT).show();
                    // set the Original result to return  
                    results.count = mOriginalValues.size();
                    results.values = mOriginalValues;
                }

             else {
                 Toast.makeText(context, "constraint not null", Toast.LENGTH_SHORT).show();
                    constraint = constraint.toString().toLowerCase();
                    for (int i = 0; i < mOriginalValues.size(); i++) {
                        String data = mOriginalValues.get(i).title;
                        if (data.toLowerCase().startsWith(constraint.toString())) {
                            ListData ld=new ListData();
                            ld.setTitle(mOriginalValues.get(i).title);;
                            ld.setDescription(mOriginalValues.get(i).Description);
                            ld.setImg(mOriginalValues.get(i).image);
                            FilteredArrList.add(ld);
                            Toast.makeText(context, "added"+i, Toast.LENGTH_SHORT).show();
                        }
                    }
                    // set the Filtered result to return
                    results.count = FilteredArrList.size();
                    results.values = FilteredArrList;
                    Toast.makeText(context, "results stored", Toast.LENGTH_SHORT).show();
                }
             Toast.makeText(context, "before returning results", Toast.LENGTH_SHORT).show();
            Log.d("before returning results","before returning results");
             return results;
        }
    };
    Toast.makeText(context, "before returning filter", Toast.LENGTH_SHORT).show();
    Log.d("before returning filter","before returning filter");
    return filter;
}

请帮忙

Answer 1

尝试这个我在我的应用程序中使用此代码并且它工作正常。

挑衅地帮助你。

 SContactListBox.addTextChangedListener(new TextWatcher()
        {
        public void afterTextChanged(Editable s)
        {
          // Abstract Method of TextWatcher Interface.
        }
        public void beforeTextChanged(CharSequence s,
        int start, int count, int after)
        {
        // Abstract Method of TextWatcher Interface.
        }


        public void onTextChanged(CharSequence s,
        int start, int before, int count)
        {
        textlength = SContactListBox.getText().length();
        array_sort.clear();
        for (int i = 0; i < Contact_NameList.size(); i++)
        {
        if (textlength <= Contact_NameList.get(i).length())
        {

            if((boolean)
                    Contact_NameList.get(i).contains(SContactListBox.getText().toString()))
           {
           array_sort.add(Contact_NameList.get(i));
           check=false;
              }
             }
            }
        ClistAdapter = new ContactListAdapter(ContactListActivity.this, array_sort);
        listContacts.setAdapter(ClistAdapter);


        }
        });

列表视图上方的搜索栏，所有联系人都无法正常工作。

1 个答案: