Utils.java 文件源码

/**
 * Converts 3 resource arrays to ArrayList<SelectableColor> of colors. Colors can be sorted by name at runtime, note that colors will be sorted in language displays to user.
 * Note: all arrays must have equal lengths.
 *
 * @param context     current context
 * @param sortByName  if true colors will be sorted by name, otherwise colors will be left as they are
 * @param idsArray    array resource id to use as colors ids
 * @param namesArray  array resource id to use as colors names
 * @param colorsArray array resource id to use as colors, well color values
 * @return colors ArrayList
 */
public static ArrayList<SelectableColor> convertResourceArraysToColorsArrayList(Context context, boolean sortByName, @ArrayRes int idsArray, @ArrayRes int namesArray, @ArrayRes int colorsArray) {
    //get and check arrays
    String[] ids = context.getResources().getStringArray(idsArray);
    int[] colors = context.getResources().getIntArray(colorsArray);
    String[] names = context.getResources().getStringArray(namesArray);

    if (ids.length != colors.length && ids.length != names.length) {
        Log.e(LOG_TAG, "convertResourceArraysToColorsArrayList(): Arrays must have equals lengths!");
        return null;
    }

    //create ArrayList
    ArrayList<SelectableColor> result = new ArrayList<>();
    for (int i = 0; i < ids.length; i++) {
        result.add(new SelectableColor(ids[i], names[i], colors[i]));
    }

    //sort by names
    if (sortByName) {
        Collections.sort(result, new SelectableItemNameComparator<SelectableColor>());
    }

    return result;
}