在列表视图上寻找最佳匹配解决方案搜索功能

Question

我想添加一个搜索功能到我的自定义列表视图。我实际上通过互联网搜索了几个小时，但我无法遵循所有那些复杂的教程或演示，所以我决定在这里发布我的问题。希望有人能真正帮我解决这个问题。这里是我的代码

ListView lv; 
    EditText inputSearch; 
    CustomListView testingAdapter; 
    //at oncreate method 
    lv = (ListView) findViewById(R.id.lvEditSavingList); 
    inputSearch = (EditText) findViewById(R.id.inputSearch); 
    loadListViewData(); 

    private void loadListViewData() { 
    // TODO Auto-generated method stub 
    UnderControlDb db = new UnderControlDb(getApplicationContext()); 
    String[] info = db.MySavingShowData(); 
    int counter = info.length; 
    Integer[] imageID = new Integer[counter]; 
    for(int i=0;i<counter;i++){ 
     imageID[i] = R.drawable.edit_notes_list; 
    } 
    testingAdapter = new CustomListView(MySaving.this, info, imageID); 
    lv.setAdapter(testingAdapter); 
} 

那么这是我的自定义类

public class CustomListView extends ArrayAdapter<String>{ 
private final Activity context; 
private final String[] data; 
private final Integer[] imageId; 
public CustomListView(Activity context,String[] data, Integer[] imageId) { 
    super(context, R.layout.my_saving_list, data); 
    this.context = context; 
    this.data = data; 
    this.imageId = imageId; 
} 

@Override 
public View getView(int position, View view, ViewGroup parent) { 
    LayoutInflater inflater = context.getLayoutInflater(); 
    View rowView= inflater.inflate(R.layout.my_saving_list, null, true); 
    TextView txtTitle = (TextView) rowView.findViewById(R.id.tvSavingListView); 
    ImageView imageView = (ImageView) rowView.findViewById(R.id.imgS); 
    txtTitle.setText(data[position]); 
    imageView.setImageResource(imageId[position]); 
    return rowView; 
} 

}

和我的XML代码

<?xml version="1.0" encoding="utf-8"?> 
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" > 
<TableRow> 
    <TextView 
     android:id="@+id/tvSavingListView" 
     android:layout_width="wrap_content" 
     android:layout_marginLeft="5dp" 
     android:layout_marginTop="5dp" 
     android:textSize="16sp" 
     android:layout_height="30dp" /> 

    <ImageView 
     android:id="@+id/imgS" 
     android:layout_width="25dp" 
     android:layout_height="25dp"/> 
</TableRow> 
</TableLayout> 

Answer 1

我为了写了一个小样本向您展示如何从listView中搜索数据。 找到下面的代码，并不要犹豫，问我任何问题的更多澄清。

public class TestSearch extends Activity { 
    ListView lv; 
    EditText inputSearch; 
    CustomListView testingAdapter; 

    public class listContent{ 
     public String info; 
     public int imageInfo; 

     public listContent(String info, int imageInfo) { 
      this.info = info; 
      this.imageInfo = imageInfo; 
     } 
     public String getInfo() { 
      return info; 
     } 
     public void setInfo(String info) { 
      this.info = info; 
     } 
     public int getImageInfo() { 
      return imageInfo; 
     } 
     public void setImageInfo(int imageInfo) { 
      this.imageInfo = imageInfo; 
     } 

    } 

    ArrayList<listContent> itemsContent; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_test_search); 
     itemsContent = new ArrayList<listContent>(); 
     CustomListView testingAdapter; 
     lv = (ListView) findViewById(R.id.lvEditSavingList); 
     inputSearch = (EditText) findViewById(R.id.inputSearch); 
     inputSearch.addTextChangedListener(textWatcher); 
     loadListViewData(); 
    } 
    private TextWatcher textWatcher = new TextWatcher() { 

     @Override 
     public void afterTextChanged(Editable s) { 
      String text = inputSearch.getText().toString().toLowerCase(Locale.getDefault()); 
      testingAdapter.filter(text); 
     } 
     @Override 
     public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, 
       int arg3) { 
     } 

     @Override 
     public void onTextChanged(CharSequence arg0, int arg1, int arg2, 
       int arg3) { 
     } 
    }; 
    private void loadListViewData() { 
     // TODO Auto-generated method stub 
     itemsContent.add(new listContent("text", R.drawable.ic_launcher)); 
     itemsContent.add(new listContent("hello", R.drawable.ic_launcher)); 
     itemsContent.add(new listContent("dear", R.drawable.ic_launcher)); 
     itemsContent.add(new listContent("test", R.drawable.ic_launcher)); 
     itemsContent.add(new listContent("lol", R.drawable.ic_launcher)); 

     testingAdapter = new CustomListView(TestSearch.this, itemsContent); 
     lv.setAdapter(testingAdapter); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     getMenuInflater().inflate(R.menu.test_search, menu); 
     return true; 
    } 
    public class CustomListView extends BaseAdapter{ 
     private final Context mContext; 
     private ArrayList<listContent> items; 
     ArrayList<listContent> filtereditems; 

     public CustomListView(Context context, ArrayList<listContent> items) { 
      this.mContext= context; 
      this.items = items; 
      this.filtereditems = new ArrayList<listContent>(); 
      this.filtereditems.addAll(items); 
     } 

     @Override 
     public View getView(int position, View view, ViewGroup parent) { 
      LayoutInflater inflater = LayoutInflater.from(mContext); 
      View rowView= inflater.inflate(R.layout.my_saving_list, null, true); 
      TextView txtTitle = (TextView) rowView.findViewById(R.id.tvSavingListView); 
      ImageView imageView = (ImageView) rowView.findViewById(R.id.imgS); 
      txtTitle.setText(items.get(position).getInfo()); 
      imageView.setImageResource(items.get(position).getImageInfo()); 
      return rowView; 
     } 

     public void filter(String charText) { 
      charText = charText.toLowerCase(Locale.getDefault()); 
      items.clear(); 
      if (charText.length() == 0) { 
       items.addAll(filtereditems); 
      } 
      else 
      { 
       for (listContent wp : filtereditems) 
       { 
        if(wp.getInfo().startsWith(charText)) 
        { 
         items.add(wp); 
        } 
       } 
      } 
      notifyDataSetChanged(); 
     } 
     @Override 
     public int getCount() { 
      return items.size(); 
     } 
     @Override 
     public Object getItem(int arg0) { 
      return items.get(arg0); 
     } 
     @Override 
     public long getItemId(int arg0) { 
      return arg0; 
     } 
    } 
    }