FlyingRadish

@interface WrapCollectionView : UICollectionView
@end

@implementation WrapCollectionView

- (void) layoutSubviews
{
    [super layoutSubviews];
    
    if (!CGSizeEqualToSize(self.bounds.size, [self intrinsicContentSize]))

FlyingRadish

public class VersionComparator implements Comparator<String> {

    @Override
    public int compare(String lhs, String rhs) {
        lhs = lhs.replaceAll("[^0-9.]", "");
        rhs = rhs.replaceAll("[^0-9.]", "");
        Scanner leftVersionScanner = new Scanner(lhs);
        Scanner rightVersionScanner = new Scanner(rhs);

        leftVersionScanner.useDelimiter("\\.");

FlyingRadish

public static int dp2px(Context ctx, float dp) {
    final float scale = ctx.getResources().getDisplayMetrics().density;
    return (int) (dp * scale + 0.5f);
}

public static int px2dp(Context ctx, float px) {
    final float scale = ctx.getResources().getDisplayMetrics().density;
    return (int) (px / scale + 0.5f);
}

FlyingRadish

public static String replace(String content, String tagExp, String targetExp, Replacer replacer) {
    Pattern tagPattern = Pattern.compile(tagExp);
    Pattern targetPattern = Pattern.compile(targetExp);
    Matcher tagMather = tagPattern.matcher(content);
    StringBuilder contentBuilder = new StringBuilder(content);
    int offset = 0;
    while (tagMather.find()) {
        String tag = tagMather.group();
        Matcher targetMatcher = targetPattern.matcher(tag);
        if (!targetMatcher.find()) {