EditText注意

edt_search.setOnEditorActionListener( new TextView.OnEditorActionListener() {

    @Override
    public boolean onEditorAction( TextView v, int actionId, KeyEvent event ) {
        //當actionId == XX_SEND 或者 XX_DONE時都觸發
        //或者event.getKeyCode == ENTER 且 event.getAction == ACTION_DOWN時也觸發
        //注意，這是必定要判斷event != null。由於在某些輸入法上會返回null。
        if ( actionId == EditorInfo.IME_ACTION_SEND
                || actionId == EditorInfo.IME_ACTION_DONE
                || ( event != null && KeyEvent.KEYCODE_ENTER == event.getKeyCode() && KeyEvent.ACTION_DOWN == event.getAction() ) ) {
            toNextPage( edt_search.getText().toString() );
            return true;
        }
        return false;
    }
} );