'how to make scrollview grow based on collection view number of rows in ios?

i have a scrollview which has a picture, text, button, label and then a collectionView whose number of rows is dynamic in nature. Its like collectionview will grow in height and hence the scrollview should assume collectionView height as well as other elements height to get a smooth scroll. How to achieve this using auto Layout in ios?

So my doubt is how to make a dynamic scrollview height based on a growing colelctionview or tableview height.

iosswiftios-autolayoutregexsnowflake-cloud-data-platform


Solution 1:[1]

FOr Swift 4.2 

override func viewDidLayoutSubviews() {
    let heightFilterCOll = self.filterCollectionView.contentSize.height
    self.filterCOllectionViewCOnstraintHeight.constant = heightFilterCOll

    self.ScrollView.contentSize = CGSize(width:self.ScrollView.frame.size.width,height:heightFilterCOll + 77)
}

Solution 2:[2]

These methods didn't work for me. Try,

self.collectionView.reloadData()
DispatchQueue.main.async {
    self.heightCollectionViewConstraint.constant = self.collectionViews.collectionViewLayout.collectionViewContentSize.height
}

Solution 3:[3]

Instead of using REGEXP_REPLACE, I suggest you write a UDF (JavaScript or Java), and use regexp of JavaScript (or java). It will be much cleaner and maintainable.

https://docs.snowflake.com/en/sql-reference/user-defined-functions.html

Here is a sample function:

CREATE OR REPLACE FUNCTION transform_text (STR VARCHAR)
RETURNS VARCHAR
LANGUAGE JAVASCRIPT
AS $$
  var abbreviations = { "inc.": "incorporation", "&": "and" };

  // remove articles from the beginning
  var Result = STR.replace( /^(a|an|the) /i, "" );

  // remove the special characters
  Result = Result.replace( /(;|,|:|%)/g, "" );

  // convert abbreviations
  for (var abv in abbreviations) Result = Result.replace( abv, abbreviations[abv] );

  return (Result);
$$
;

select transform_text( 'A good, a:; bo%ok & hoyd inc.' ) as Result;


+------------------------------------+
|               RESULT               |
+------------------------------------+
| good a book and hoyd incorporation |
+------------------------------------+

Solution 4:[4]

A couple tweaks on the excellent answer from Gokhan.

  1. Convert the abbreviations prior to removing special chars
  2. Special chars easier to remove with the ^ not one of these approach
  3. Using \b to trap the word for the articles

enter image description here

CREATE OR REPLACE FUNCTION transform_text_2 (STR VARCHAR)
RETURNS VARCHAR
LANGUAGE JAVASCRIPT
AS $$
  var abbreviations = { "inc.": "incorporation", "&": "and" };

  // remove articles from the beginning
  var Result = STR.replace( /\b(an?|the)\b /i, "" );

  // convert abbreviations
  for (var abv in abbreviations) Result = Result.replace( abv, abbreviations[abv] );

  // remove the special characters
  Result = Result.replace( /[^A-Za-z0-9 ]/g, "" );


  return (Result);
$$
;

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Shahzaib Maqbool
Solution 2 Wimukthi Rajapaksha
Solution 3
Solution 4 Adrian White

Related Questions