Android点击EditText控件外部隐藏键盘

//根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘
private boolean isShouldHideKeyboard(View v, MotionEvent event) {
    if (v instanceof EditText) {
        int[] l = {0, 0};
        v.getLocationInWindow(l);
        int left = l[0],
        top = l[1],
        bottom = top + v.getHeight(),
        right = left + v.getWidth();
        return !(event.getX() > left && event.getX() < right
                && event.getY() > top && event.getY() < bottom);
    }
    return false;
}

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
    if (ev.getAction() == MotionEvent.ACTION_DOWN) {
        View v = getCurrentFocus();
        if (isShouldHideKeyboard(v, ev)) {
            InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            if(imm != null){     
           imm.hideSoftInputFromWindow(v.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
            }
        }
    }
    return super.dispatchTouchEvent(ev);
}