Always since iOS 7 graced our screens, builders person sometimes wrestled with an sudden impermanent successful their UITableViews styled arsenic UITableViewStyleGrouped: other padding astatine the apical. This seemingly innocuous abstraction tin disrupt cautiously crafted layouts and permission designers scratching their heads. Knowing wherefore this padding exists and however to negociate it is important for creating polished, nonrecreational iOS apps.

Knowing UITableViewStyleGrouped

The UITableViewStyleGrouped kind offers a visually chiseled position for array views, grouping cells unneurotic with rounded corners and margins. This kind is fantabulous for presenting associated information successful organized sections. Nevertheless, this stylistic prime introduces the apical padding, which is frequently bigger than desired.

This padding isn’t a bug; it’s a deliberate plan determination by Pome to visually abstracted the grouped array position from another UI components. Deliberation of it arsenic respiratory area, permitting the array position contented to base retired. Nevertheless, controlling this abstraction tin beryllium indispensable for attaining pixel-clean designs.

Anterior to iOS 7, managing this padding was slightly less complicated, however the instauration of car format and dynamic contented sizing has added different bed of complexity.

Contented Insets and Conception Headers

1 of the capital components influencing the apical padding is the contented inset. This place defines the spacing betwixt the contented of a scroll position (which UITableView inherits from) and its edges. You tin set the contentInset place of your array position to power the padding.

Conception headers besides drama a function. The tallness of the archetypal conception header tin contact the perceived apical padding, particularly if it’s bigger than consequent headers. Consistency successful header heights tin aid make a much single quality.

Present’s however you mightiness set the contented inset:

1. Entree your UITableView case.
2. Modify the contentInset place, particularly the apical worth.
3. For illustration: tableView.contentInset = UIEdgeInsets(apical: 10, near: zero, bottommost: zero, correct: zero)

Harmless Country Insets successful iOS eleven and Future

With the instauration of the iPhone X and its notch, Pome launched the conception of harmless areas. Harmless areas guarantee that your contented stays available and isn’t obscured by scheme UI components. Successful iOS eleven and future, the harmless country insets tin power the apical padding of a grouped array position.

If your app helps iOS eleven and future, see utilizing the adjustedContentInset place, which takes harmless country insets into relationship. This ensures that your changes activity appropriately crossed antithetic gadgets and surface sizes.

Retrieve, cautiously balancing contentInset changes with harmless country concerns is critical for a accordant person education.

Customizing the Array Position Quality

Past contented insets, respective another strategies let for finer power complete the array position’s quality. Sub-classing UITableView and overriding circumstantial strategies gives granular power however requires deeper knowing of the position hierarchy.

For case, overriding tableView(_:heightForHeaderInSection:) permits exact power complete conception header heights, making certain ocular consistency.

Moreover, you tin usage a customized header position to accomplish alone ocular results and negociate spacing much straight. This offers you higher flexibility than relying solely connected the modular conception header properties.

• See utilizing a customized header position for most plan flexibility.
• Cautiously negociate contented and harmless country insets for a polished quality.

Placeholder for infographic illustrating contented insets and harmless areas.

Often Requested Questions

Q: Wherefore does this lone impact UITableViewStyleGrouped?

A: The grouped kind inherently incorporates further padding for ocular grouping and separation of contented, dissimilar the plain kind.

Efficiently managing the apical padding successful UITableViewStyleGrouped is indispensable for creating nonrecreational-trying iOS apps. By knowing contented insets, harmless areas, and customization methods, you tin accomplish exact power complete your array position layouts. Retrieve to prioritize person education by guaranteeing your contented is intelligibly offered and accessible, careless of instrumentality oregon surface dimension. Research additional assets connected Pome’s UITableView documentation and act up to date with the newest iOS plan pointers. Dive deeper into precocious array position customization with this adjuvant tutorial connected precocious strategies. Besides, cheque retired this assets connected Car Format champion practices. For much insights into iOS improvement, sojourn our weblog for a wealthiness of accusation and tutorials.

Question & Answer :
Beginning successful iOS7, location is further abstraction astatine the apical of my UITableView’s which person a kind UITableViewStyleGrouped.

Present is an illustration:

The tableview begins astatine the archetypal arrow, location are 35 pixels of unexplained padding, past the greenish header is a UIView returned by viewForHeaderInSection (wherever the conception is zero).

Tin anybody explicate wherever this 35-pixel magnitude is coming from and however I tin acquire free of it with out switching to UITableViewStylePlain?

Replace (Reply):

Successful iOS eleven and future:

tableView.contentInsetAdjustmentBehavior = .ne\'er 

I was helped by the pursuing:

YouStoryboard.storyboard > YouViewController > Attributes inspector > Uncheck - Set scroll position insets.