editText.setOnEditorActionListener(new TextView.OnEditorActionListener() { 
public boolean onEditorAction(TextView v, int actionId,          KeyEvent event) {             
if (actionId==EditorInfo.IME_ACTION_SEND ||(event!=null&&event.getKeyCode()== KeyEvent.KEYCODE_ENTER)) 
{        
//do something;       
return true;       
}        
return false;      
}    
});

public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { 
    //以下方法防止两次发送请求 再判断动作 
    if (actionId == EditorInfo.IME_ACTION_SEND || 
        (event != null && event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) { 
      switch (event.getAction()) { 
        case KeyEvent.ACTION_UP: 
          //发送请求 
          String keyWord = et_search.getText().toString().trim(); 
          if (null == keyWord) 
            keyWord = ""; 
          dismisspopup(); 
          LogUtils.d("向服务器发送搜索请求：" + keyWord); 
          //发起查询 
          searchByKeyWord(keyWord); 
          hideSoftInput(); 
          return true; 
        default: 
          return true; 
      } 
    } 
    return false; 
  } 

EditText editText = (EditText) contentView.findViewById(R.id.editText); 
    editText.setOnEditorActionListener(new OnEditorActionListener() { 
      @Override 
      public boolean onEditorAction(TextView v, int actionId, 
          KeyEvent event) { 
        if (actionId == EditorInfo.IME_ACTION_SEARCH) { 
          Toast.makeText(getActivity(), "1111111",Toast.LENGTH_SHORT).show(); 
        } 
        return false; 
      } 
    });