PullToRefresh extension for all UIScrollView type classes with animated text drawing style

Cem Olcay

Last update: Dec 3, 2022

Related tags

Pull to Refresh PullToRefreshCoreText

Overview

PullToRefreshCoreText

PullToRefresh extension for all UIScrollView type classes with animated text drawing style

Demo

Install

Manual
Copy the files in the folder named PullToRefreshCoreText to your project.
Import the "UIScrollView+PullToRefreshCoreText.h"

Cocoapods

    source 'https://github.com/CocoaPods/Specs.git'
    pod 'PullToRefreshCoreText', '~> 0.2'

Usage

- (void)addPullToRefreshWithPullText:(NSString *)pullText
                       pullTextColor:(UIColor *)pullTextColor
                        pullTextFont:(UIFont *)pullTextFont
                      refreshingText:(NSString *)refreshingText
                 refreshingTextColor:(UIColor *)refreshingTextColor
                  refreshingTextFont:(UIFont *)refreshingTextFont
                              action:(pullToRefreshAction)action;

It has 2 main texts, pulling and refreshing.
Init function has parameters for creating this texts with its strings, text colors and fonts.
Last parameter is the block function where loading code goes to.

Alternatively I added some other init methods if you want to use same texts or fonts etc.

   - (void)addPullToRefreshWithPullText:(NSString *)pullText
                                 action:(pullToRefreshAction)action;
   
   - (void)addPullToRefreshWithPullText:(NSString *)pullText
                         refreshingText:(NSString *)refreshingText
                                 action:(pullToRefreshAction)action;
   
   - (void)addPullToRefreshWithPullText:(NSString *)pullText
                                   font:(UIFont *)font
                                 action:(pullToRefreshAction)action;
   
   
   - (void)addPullToRefreshWithPullText:(NSString *)pullText
                         refreshingText:(NSString *)refreshingText
                                   font:(UIFont *)font
                                 action:(pullToRefreshAction)action;
   
   
   - (void)addPullToRefreshWithPullText:(NSString *)pullText
                          pullTextColor:(UIColor *)pullTextColor
                         refreshingText:(NSString *)refreshingText
                    refreshingTextColor:(UIColor *)refreshingTextColor
                                   font:(UIFont *)font
                                 action:(pullToRefreshAction)action;

Implementation

//Create ScrollView
self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.frame];
[self.scrollView setContentSize:CGSizeMake(self.view.frame.size.width, self.scrollView.frame.size.height + 1)];
[self.view addSubview:self.scrollView];


//add pull to refresh
__weak typeof(self) weakSelf = self;
[self.scrollView addPullToRefreshWithPullText:@"Pull To Refresh" pullTextColor:[UIColor blackColor] pullTextFont:DefaultTextFont refreshingText:@"Refreshing" refreshingTextColor:[UIColor blueColor] refreshingTextFont:DefaultTextFont action:^{
    [weakSelf loadItems];
}];

One last thing: you should call the [scrollView finishLoading] method after the load finishes.
Otherwise you stuck in refreshing state always.

Credits

Blogs and codes I used for creating this
https://github.com/jrturton/NSString-Glyphs
http://www.codeproject.com/Articles/109729/Low-level-text-rendering
http://ronnqvi.st/controlling-animation-timing/

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Comments

Fix positioning on orientation change

When the orientation changes the width of the PullToRefreshCoreTextView's superview will change. I perform a check for this when the scrollview begins to scroll and update the view's frame and it's layers.

Additionally, I added a UITableViewController example.

opened by garfbargle 1
Getting more done in GitHub with ZenHub
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Still curious? See more ZenHub features or read user reviews. This issue was written by your friendly ZenHub bot, posted by request from @bitnpc.
opened by bitnpc 0
Can't scroll back without dispatch_after()

In ViewController.m

if using [weakScrollView finishLoading] without dispatch_after, the scrollView can't go back. - (void)loadItems { __weak typeof(UIScrollView *) weakScrollView = self.scrollView; __weak typeof(self) weakSelf = self; // dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, 3 * NSEC_PER_SEC); // dispatch_after(popTime, dispatch_get_main_queue(), ^(void){ // [weakSelf addNewItem]; [weakScrollView finishLoading]; // }); }

opened by bitnpc 0
Potential leak of an object

Potential leak of an object Call to function 'CTFontCreateWithName' returns a Core Foundation object with a +1 retain count Object leaked: allocated object is not referenced later in this execution path and has a retain count of +1

opened by aleksandrshoshiashvili 1

PullToRefresh extension for all UIScrollView type classes with animated text drawing style

Related tags

Overview

PullToRefreshCoreText

Demo

Install

Usage

Implementation

Credits

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Comments

Fix positioning on orientation change

Getting more done in GitHub with ZenHub

How do I use ZenHub?

What can ZenHub do?

Add ZenHub to GitHub

Can't scroll back without dispatch_after()

Potential leak of an object

Releases(v0.2)

v0.2(Feb 7, 2015)

v0.1(Jan 9, 2015)

Owner

Cem Olcay

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