android - 除非在编辑文本中输入完整的行，否则搜索不会完成

Question

我有一个新的搜索 Activity ，它有一个用于输入搜索查询的编辑文本和用于搜索 EditText 中输入的查询的搜索按钮

搜索到的项目显示在搜索 Activity 的 ListView 中

现在的问题是我有一个 ListView，用户可以从中搜索所需内容

让我们假设这个 ListView 有 100 个列表项，全部命名为 :

1. 测试标题 1，
2. 测试标题 2，
3. 测试标题 3 ,

4. 测试标题 4，

   依此类推直到测试标题 100

现在在 editext 的搜索 Activity 中，如果我输入“test”并按下搜索按钮，它应该显示所有列表，因为每个列表项标题的标题中都包含测试，但我什么也得不到

我必须输入整个标题才能完成搜索，例如“test heading 1”，匹配的标题会显示在列表中

如果我在 edittext 中输入“test”并按下搜索按钮，我怎样才能使搜索更好，它应该显示其标题中包含测试词的所有项目

现在我正在使用 parse.com 将数据检索到 ListView 中(遗憾的是 parse.com 正在关闭)并且我正在将我的数据库迁移到 m6 自己的服务器

我试过的代码

搜索 Activity

public class SearchActivity extends Activity
 {

protected  EditText searchedittext;
 Button searchButton;
List<ParseObject> ob;

@Override
public void onCreate(Bundle savedInstanceState )
{
    // TODO: Implement this method
    super.onCreate(savedInstanceState);
    setContentView(R.layout.search_layout);

    searchedittext = (EditText) findViewById(R.id.search_layoutEditText);

    final ListView searchedlist = (ListView) findViewById(R.id.searchlist);
    searchButton = (Button) findViewById(R.id.searchlayoutbtn);

    searchButton.setOnClickListener(new View.OnClickListener(){

        @Override
        public void onClick(View v){
            String seaechedit = searchedittext.getText().toString();

            if(seaechedit.isEmpty()){

                AlertDialog.Builder builder = new AlertDialog.Builder(SearchActivity.this);
                builder.setMessage("PLEASE ENTER SOME SEARCH QUERY")
                       .setTitle("EMPTY SEARCH") 
                       .setPositiveButton(android.R.string.ok, null);

                AlertDialog dialog = builder.create();
                dialog.show();

            }
            else{
                setProgressBarIndeterminateVisibility(true);
                // InterActivity is the class name in parse database where listview retrives it data from
                ParseQuery<ParseObject> query = new ParseQuery<ParseObject>(
                    "InterActivity");

                query.whereEqualTo("listheading", seaechedit);
                query.orderByAscending("_created_at");
                query.setLimit(200);

                query.findInBackground(new FindCallback<ParseObject>() {

                        @Override
                        public void done(List<ParseObject> p1, ParseException e)
                        {
                            setProgressBarIndeterminateVisibility(false);

                            if(e == null){

                                ob = p1;

                                String [] searchHeadings = new String[ob.size()];

                                int i = 0;

                                     // listheading is the coloumn name in parse database
                                      for(ParseObject heading : ob){ searchHeadings[i] = (String) heading.get("listheading");
                                i++;

                                }

                                ArrayAdapter<String> adapter = new ArrayAdapter<String>( SearchActivity.this, android.R.layout.simple_list_item_1, searchHeadings );
                                searchedlist.setAdapter(adapter);


                            }else{

                                Log.e("searchactivity", e.getMessage()); 
                                AlertDialog.Builder builder = new AlertDialog.Builder(SearchActivity.this); 
                                builder.setMessage(e.getMessage()) 
                                       .setTitle("Nothing found")
                                       .setPositiveButton(android.R.string.ok, null); 
                                AlertDialog dialog = builder.create();
                                dialog.show();
                            }
                        }
                    });
            }


        }

    });

}



 }

第一个图像中 rhe 列表 Activity 的 aynctask

private class RemoteDataTask extends AsyncTask<Void, Void, Void> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();


        dialog = new SpotsDialog(InterActivity.this, R.style.Custom);

        dialog.show();
    }


    @Override
    protected Void doInBackground(Void... params) {
        // Create the array
        codelist = new ArrayList<CodeList>();
        try {
            // Locate the class table named "Country" in Parse.com
            ParseQuery<ParseObject> query = new ParseQuery<ParseObject>(
                "InterActivity");
            // Locate the column named "ranknum" in Parse.com and order list
            // by ascending
            query.orderByAscending("_created_at");
            query.setLimit(limit);
            ob = query.find();
            for (ParseObject inter : ob) {




                map.setDescription((String) inter.get("subheading"));
                map.setIntroduction((String) inter.get("intro"));


                codelist.add(map);
            }
        } catch (ParseException e) {
            Log.e("Error", e.getMessage());
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        // Locate the listview in listview_main.xml


        listview = (SwipeMenuListView) findViewById(R.id.inter_layoutListView);
        // Pass the results into ListViewAdapter.java
        adapter = new FinalAdapter(InterActivity.this,
                                      codelist);


        // Binds the Adapter to the ListView
    listview.setAdapter(adapter);


        listview.setOnItemClickListener(InterActivity.this);


        dialog.dismiss();





}


@Override
public void onItemClick(AdapterView<?> p1, View view, int position, long p4)
{

    ObjectMapper mapper = new ObjectMapper();
    CodeList codes = (CodeList) adapter.getItem(position);


    try{

        Intent intent = new Intent(InterActivity.this, SingleItemView.class);

        String jsonString = mapper.writeValueAsString(codes);


        intent.putExtra("selected item", jsonString);





        intent.putExtra("subheading",
                        (codelist.get(position).getDescription()));



        intent.putExtra("intro",
                        (codelist.get(position).getIntroduction()));



        // Start SingleItemView Class
        //   startActivity(intent);
        startActivityForResult(intent, 1);

    }catch(JsonProcessingException e){
        //something went w3ong
    }
}

Answer 1

您正在使用 whereEqualTo() 它要求特定键的值等于提供的值。

query.whereEqualTo("listheading", seaechedit);

将其替换为 它会找到包含所提供字符串的字符串值。

query.whereContains("listheading", seaechedit);

参见whereContains Function