我希望下面的過濾區分大小寫，即當我編寫ABC時，它不會顯示aBc等。

Question

在下面的代碼中，過濾不區分大小寫。我想，當我在我的應用程序寫ABC就不會也顯示出ABC，ABC，ABC，ABC和ABC濾波將是大小寫敏感的，例如：

private ListView lv; 

ArrayAdapter<String> adapter; 

EditText inputSearch; 


ArrayList<HashMap<String, String>> productList; 

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

    String products[] = {"ABC", "abc", "aBc", "Abc", "abC" 

};

lv = (ListView) findViewById(R.id.list_view); 
    inputSearch = (EditText) findViewById(R.id.inputSearch); 

    adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.product_name, products); 
    lv.setAdapter(adapter); 

    inputSearch.addTextChangedListener(new TextWatcher() { 

     @Override 
     public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
      MainActivity.this.adapter.getFilter().filter(cs); 
     } 

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

     } 

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

}

Answer 1

//You can try this 

inputSearch.addTextChangedListener(new TextWatcher() { 
     @Override 
     public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
      MainActivity.this.adapter.getFilter().filter(cs.toLowerCase(Locale.getDefault())); 
     } 

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

     } 

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