android.widget.GridView#AUTO_FIT源码实例Demo

public int parseColumnCount(List<PXStylesheetLexeme> lexemes) {
    setupWithLexemes(lexemes);
    int result = GridView.AUTO_FIT;

    try {
        result = getColumnCount();
    } catch (Exception e) {
        addError(e.getMessage());
    }

    return result;
}
 

private int getColumnCount() {
    int result = GridView.AUTO_FIT;
    PXStylesheetTokenType currentType = currentLexeme.getType();
    Object value = currentLexeme.getValue();

    // If currentType is a number, that's the number of columns. If it's an
    // IDENTIFIER, then the only valid value is "auto". If it's anything
    // else, it's an invalid value and we'll anyway use the default of
    // "auto".
    switch (currentType) {
        case NUMBER:
            if (value instanceof Number) {
                result = ((Number) value).intValue();
            } else {
                result = Integer.parseInt((String) value);
            }
            break;
        case IDENTIFIER:
            // Check is here to just show the warning if applicable. Default
            // of "auto" is only valid value.
            if (!("auto".equals(value))) {
                exceptionWithMessage("'" + value + "' unrecognized as value for column count.");
            }
            break;
        default:
            exceptionWithMessage("'" + value + "' unrecognized as value for column count.");

    }

    advance();
    return result;
}