Android EditText 輸入金額（小數點后兩位）

EditText edit = new EditText(context);
InputType.TYPE_NUMBER_FLAG_DECIMAL //小數點型
InputType.TYPE_CLASS_NUMBER //整數型

//設置Input的類型兩種都要

edit.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL|InputType.TYPE_CLASS_NUMBER);

//設置字符過濾
edit.setFilters(new InputFilter[]{new InputFilter() {
    @Override
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
        if(source.equals(".") && dest.toString().length() == 0){
            return "0.";
        }
        if(dest.toString().contains(".")){
            int index = dest.toString().indexOf(".");
            int length = dest.toString().substring(index).length();
            if(length == 3){
                return "";
            }
        }
        return null;
    }
}});