從列表中篩選數據<String> Android onTextChange Android

Question

我對List.i中的過濾器數據有點問題，想要過濾List中的數據。我的問題是wech我開始在edittext上編寫文本，而不是listview顯示列表的第一個位置。

這是我的代碼。

MainClass

public class ItemType extends AppCompatActivity { 

    ListView item; 
    Context context=this; 
    List<String> allItemNames = new ArrayList<String>(); 
    Item_Type_list_adapter adapter; 
    EditText search; 
    ArrayAdapter<String> adapter1; 
    String[] data = {"mehul joisar","amit mishra","amitabh","Aamir khan","jesica","katrina"}; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_item_type); 

     search=(EditText)findViewById(R.id.Search); 

     item=(ListView)findViewById(R.id.item_type_listview); 

     allItemNames = new ArrayList<String>(); 

     allItemNames.add("Coil"); 
     allItemNames.add("Plate"); 
     allItemNames.add("Sheet"); 
     allItemNames.add("Extra"); 

     adapter=new Item_Type_list_adapter(this,allItemNames); 

     item.setAdapter(adapter); 


     item.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { 

       String data = (String) adapterView.getItemAtPosition(i); 
       Log.d("Positions", data); 

      } 
     }); 

     search.addTextChangedListener(new TextWatcher() { 
      @Override 
      public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

      } 

      @Override 
      public void onTextChanged(CharSequence cs, int i, int i1, int i2) { 

       adapter.getFilter().filter(search.getText().toString()); 
       adapter.notifyDataSetChanged(); 
      } 

      @Override 
      public void afterTextChanged(Editable editable) { 

      } 
     }); 


    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_item_type, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 


     return super.onOptionsItemSelected(item); 
    } 
} 

一個ArrayAdapter類

public class Item_Type_list_adapter extends ArrayAdapter<String> implements Filterable { 

    Activity context; 
    private final List<String> allNames; 

    public Item_Type_list_adapter(Activity context,List<String> allNames) { 
     super(context, R.layout.item_type_layout,allNames); 
     this.context=context; 
     this.allNames=allNames; 
    } 
    public View getView(int position,View view,ViewGroup parent) { 
     LayoutInflater inflater=context.getLayoutInflater(); 
     View rowView=inflater.inflate(R.layout.item_type_layout, null, true); 

     TextView ItemName = (TextView) rowView.findViewById(R.id.ItemName); 

     ItemName.setText(allNames.get(position)); 


     return rowView; 

    }; 
} 

我在列表中添加4值

1.Coil 2.Plate 3.sheet 4.extra

當我開始f ilter它只顯示線圈。但當我在列表視圖上觸摸它的日誌完美的價值，但只是顯示錯誤的價值。

幫我解決這個問題。

有沒有在我的代碼中缺少？

在此先感謝

Answer 1

嘗試這個代碼與EditText
activity_main.xml中

<EditText 
    android:id="@+id/etText" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:ems="10"> 

    <requestFocus /> 
</EditText> 

<ListView 
    android:id="@+id/list" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:divider="@android:color/transparent" 
    android:isScrollContainer="false" /> 

一個新的TextView佈局稱爲item.xml顯示條目過濾ListView

<?xml version="1.0" encoding="utf-8"?> 
<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

</TextView> 

onCreate()方法內MainActivity

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    // Array list of items 
    List<String> itemsList = new ArrayList<String>(); 
    itemsList.add("AAAA"); 
    itemsList.add("AABC"); 
    itemsList.add("ABCD"); 
    itemsList.add("BBCD"); 
    itemsList.add("BCDE"); 
    itemsList.add("CCDE"); 
    itemsList.add("CDEF"); 


    // create an ArrayAdaptar from the String Array 
    final ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, 
      R.layout.item, itemsList); 
    ListView listView = (ListView) findViewById(R.id.list); 
    // Assign adapter to ListView 
    listView.setAdapter(dataAdapter); 

    // enables filtering for the contents of the given ListView 
    listView.setTextFilterEnabled(true); 

    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     public void onItemClick(AdapterView<?> parent, View view, 
           int position, long id) { 
      // When clicked, show a toast with the TextView text 
      Toast.makeText(getApplicationContext(), 
        ((TextView) view).getText(), Toast.LENGTH_SHORT).show(); 
     } 
    }); 

    EditText myFilter = (EditText) findViewById(R.id.etText); 
    myFilter.addTextChangedListener(new TextWatcher() { 

     public void afterTextChanged(Editable s) { 
     } 

     public void beforeTextChanged(CharSequence s, int start, int count, 
             int after) { 
     } 

     public void onTextChanged(CharSequence s, int start, int before, 
            int count) { 
      dataAdapter.getFilter().filter(s); 
     } 
    }); 
} 

希望它有助於