TooltipView.java 文件源码

private int getDimension(TypedArray a, @StyleableRes int styleableId,
        @DimenRes int defaultDimension) {
    int result = a.getDimensionPixelSize(styleableId, NOT_PRESENT);
    if (result == NOT_PRESENT) {
        result = getResources().getDimensionPixelSize(defaultDimension);
    }
    return result;
}