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by forkingdog

Template auto layout cell for automatically UITableViewCell height calculating

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Template auto layout cell for automatically UITableViewCell height calculating.

Demo Overview

Basic usage

If you have a self-satisfied cell, then all you have to do is:

#import "UITableView+FDTemplateLayoutCell.h"

  • (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return [tableView fd_heightForCellWithIdentifier:@"reuse identifer" configuration:^(id cell) {
      // Configure this cell with data, same as what you've done in "-tableView:cellForRowAtIndexPath:"
      // Like:
      //    cell.entity = self.feedEntities[indexPath.row];
    }]; }

Height Caching API

Since iOS8,

will be called more times than we expect, we can feel these extra calculations when scrolling. So we provide another API with cache by index path:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return [tableView fd_heightForCellWithIdentifier:@"identifer" cacheByIndexPath:indexPath configuration:^(id cell) {
        // configurations

Or, if your entity has an unique identifier, use cache by key API:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    Entity *entity = self.entities[indexPath.row];
    return [tableView fd_heightForCellWithIdentifier:@"identifer" cacheByKey:entity.uid configuration:^(id cell) {
        // configurations

Frame layout mode

offers 2 modes for asking cell's height.
  1. Auto layout mode using "-systemLayoutSizeFittingSize:"
  2. Frame layout mode using "-sizeThatFits:"

Generally, no need to care about modes, it will automatically choose a proper mode by whether you have set auto layout constrants on cell's content view. If you want to enforce frame layout mode, enable this property in your cell's configuration block:

cell.fd_enforceFrameLayout = YES;

And if you're using frame layout mode, you must override

in your customized cell and return content view's height (separator excluded)
- (CGSize)sizeThatFits:(CGSize)size {
    return CGSizeMake(size.width, A+B+C+D+E+....);

Debug log

Debug log helps to debug or inspect what is this "FDTemplateLayoutCell" extention doing, turning on to print logs when "calculating", "precaching" or "hitting cache".Default to "NO", log by "NSLog".

self.tableView.fd_debugLogEnabled = YES;

It will print like this:

** FDTemplateLayoutCell ** layout cell created - FDFeedCell
** FDTemplateLayoutCell ** calculate - [0:0] 233.5
** FDTemplateLayoutCell ** calculate - [0:1] 155.5
** FDTemplateLayoutCell ** calculate - [0:2] 258
** FDTemplateLayoutCell ** calculate - [0:3] 284
** FDTemplateLayoutCell ** precached - [0:3] 284
** FDTemplateLayoutCell ** calculate - [0:4] 278.5
** FDTemplateLayoutCell ** precached - [0:4] 278.5
** FDTemplateLayoutCell ** hit cache - [0:3] 284
** FDTemplateLayoutCell ** hit cache - [0:4] 278.5
** FDTemplateLayoutCell ** hit cache - [0:5] 156
** FDTemplateLayoutCell ** hit cache - [0:6] 165

About self-satisfied cell

a fully self-satisfied cell is constrainted by auto layout and each edge("top", "left", "bottom", "right") has at least one layout constraint against it. It's the same concept introduced as "self-sizing cell" in iOS8 using auto layout.

A bad one :( - missing right and bottom non-self-satisfied

A good one :)


A template layout cell is created by

method, it means that you MUST have registered this cell reuse identifier by one of:
  • A prototype cell of UITableView in storyboard.
  • Use
  • Use




Latest version: 1.6

pod search UITableView+FDTemplateLayoutCell 

If you cannot search out the latest version, try:

pod setup

Release Notes

We recommend to use the latest release in cocoapods.

  • 1.6 fix bug in iOS 10

  • 1.4
    Refactor, add "cacheByKey" mode, bug fixed

  • 1.3
    Frame layout mode, handle cell's accessory view/type

  • 1.2
    Precache and auto cache invalidation

  • 1.1
    Height cache

  • 1.0
    Basic automatically height calculation



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