Android中点击隐藏软键盘最佳方法——Android开发之路4

 Android中点击隐藏软键盘最佳方法

 实现功能：点击EditText，软键盘出现并且不会隐藏，点击或者触摸EditText以外的其他任何区域，软键盘被隐藏；

1、重写dispatchTouchEvent()方法，获取当前触摸事件为DOWN的时候隐藏软键盘

@Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        //Finger touch screen event
        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
            // get current focus,Generally it is EditText
            View view = getCurrentFocus();
            if (isShouldHideSoftKeyBoard(view, ev)) {
                hideSoftKeyBoard(view.getWindowToken());
            }
        }
        return super.dispatchTouchEvent(ev);
    }

2、isShouldHideInput()方法；

/**
     * Judge what situation hide the soft keyboard,click EditText view should show soft keyboard
     * @param v Incident event
     * @param event 
     * @return
     */
    private boolean isShouldHideSoftKeyBoard(View view, MotionEvent event) {
        if (view != null && (view instanceof EditText)) {
            int[] l = { 0, 0 };
            view.getLocationInWindow(l);
            int left = l[0], top = l[1], bottom = top +view.getHeight(), right = left
                    + view.getWidth();
            if (event.getX() > left && event.getX() < right
                    && event.getY() > top && event.getY() < bottom) {
                // If click the EditText event ,ignore it
                return false;
            } else {
                return true;
            }
        }
        // if the focus is EditText,ignore it; 
        return false;
    }

3、hideSoftKeyBoard()方法；

/**
     * hide soft keyboard
     * @param token
     */
    private void hideSoftKeyBoard(IBinder token) {
        if (token != null) {
            InputMethodManager im = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            im.hideSoftInputFromWindow(token,
                    InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }