需要實現點選fragment空白的地方來實現隱藏軟鍵盤,首先在其所依附的activity中重寫dispatchTouchEvent方法,並提供介面

//點選空白處，隱藏軟鍵盤 回撥介面
    public interface MyTouchListener {
        public void onTouchEvent(MotionEvent event);
    }

    /*
     * 儲存MyTouchListener介面的列表
     */
    private ArrayList<MyTouchListener> myTouchListeners =
 
 new ArrayList<DDLiveBackgroundActivity.MyTouchListener>();

    /**
     * 提供給Fragment通過getActivity()方法來註冊自己的觸控事件的方法
     *
     * @param listener
     */
    public void registerMyTouchListener(MyTouchListener listener) {
        myTouchListeners.add(listener);
    }

    /**
     * 提供給Fragment通過getActivity()方法來取消註冊自己的觸控事件的方法
     *
     * @param listener
     */
 

    public void unRegisterMyTouchListener(MyTouchListener listener) {
        myTouchListeners.remove(listener);
    }

    /**
     * 分發觸控事件給所有註冊了MyTouchListener的介面
     */
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        boolean dispatch = super.dispatchTouchEvent(ev);
        for
 
 (MyTouchListener listener : myTouchListeners) {
            listener.onTouchEvent(ev);
        }
        return dispatch;
    }

在fragment的onResume方法中註冊

DDLiveBackgroundActivity.MyTouchListener myTouchLinster = new DDLiveBackgroundActivity.MyTouchListener() {

            @Override
            public void onTouchEvent(MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    if (ETSettingH323Fragment.this.getActivity().getCurrentFocus() != null && ETSettingH323Fragment
                            .this.getActivity().getCurrentFocus().getWindowToken() != null) {
                        InputMethodManager manager = (InputMethodManager) ETSettingH323Fragment.this.getActivity()
                                .getSystemService(Context.INPUT_METHOD_SERVICE);
                        manager.hideSoftInputFromWindow(ETSettingH323Fragment.this.getActivity().getCurrentFocus()
                                .getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
                    }
                }
            }
        };

        ((DDLiveBackgroundActivity) this.getActivity()).registerMyTouchListener(myTouchLinster);

記得在fragment的onPause方法中取消註冊

 if (myTouchLinster != null) {
            ((DDLiveBackgroundActivity) this.getActivity()).unRegisterMyTouchListener(myTouchLinster);
            myTouchLinster = null;
        }