處理UpperCase和LowerCase字母EditText Android

Question

我正在使用TextWatcher，因此當我開始在我的編輯文本中輸入內容時，它顯示全部大寫，但我需要添加一項功能，當我按ENTER時，以小寫字母。我該怎麼做？

這裏是textwatcher

scene.addTextChangedListener(new TextWatcher() { 

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

      } 
       @Override 
      public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, 
          int arg3) {    
      } 
      @Override 
      public void afterTextChanged(Editable arg0) { 
        String s=arg0.toString(); 

       if(!s.equals(s.toUpperCase())) 
       { 
       s=s.toUpperCase(); 
       scene.setText(s); 
       scene.setSelection(scene.getText().length()); 

       } 
      } 
     }); 

這裏是處理的事件中的代碼ENTER

scene.setOnKeyListener(new OnKeyListener() { 

      @Override 
      public boolean onKey(View v, int keyCode, KeyEvent event) { 
       // TODO Auto-generated method stub 
       if ((event.getAction() == KeyEvent.ACTION_DOWN) && 
         (keyCode == KeyEvent.KEYCODE_ENTER)) { 
        String s = scene.getText().toString(); 
        s=s+'\n'; 
        scene.setText(s); 
        scene.setSelection(scene.getText().length()); 
         ib2(scene); 

         return true; 
        } 
       return false; 
      } 

     }); 

Answer 1

我猜你需要toLowerCase

String input = "Cricket!"; 
String upper = input.toUpperCase(); //stores "CRICKET!" 
String lower = input.toLowerCase(); //stores "cricket!" 

在您的安其方法像這樣做

String s = scene.getText().toString(); 
    s=s.toLowerCase(); 
    scene.setText(s); 

更新您的setOnKeyListener方法這樣

scene.setOnKeyListener(new OnKeyListener() { 

      @Override 
      public boolean onKey(View v, int keyCode, KeyEvent event) { 
       // TODO Auto-generated method stub 
       if ((event.getAction() == KeyEvent.ACTION_DOWN) && 
         (keyCode == KeyEvent.KEYCODE_ENTER)) { 


         String s = scene.getText().toString(); 
         s=s.toLowerCase(); 
         scene.setText(s); 
         scene.setSelection(scene.getText().length()); 
         ib2(scene); 

         return true; 
        } 
       return false; 
      } 

     });