Android EditText 過濾空格後長度限制失效的解決辦法

可以爲EditText設置多個InputFilter

etClassesShortname.setFilters(new InputFilter[]{new InputFilter() { //過濾空格
            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                if (source.equals(" ")) return "";
                else return null;
            }
        }
        ,new InputFilter.LengthFilter(2)}); //輸入長度限制