My Little Thought

Anything that happens to me, from gaming to iOS, from academic to business.

[hkbenchan]

Quick note on editing mutable attributed string in UITextView

Remember to call

NSMutableAttributedString *mutableAttrStr = [textView.attributedText mutableCopy];

[mutableAttrStr beginEditing]; // ... code to change some attributes [mutableAttrStr endEditing];

textView.attributedText = mutableAttrStr;

[hkbenchan]

Amazon SNS portal APNS application creation

How to create an APNS SNS application system on Amazon protal

After following this page, you should have two files, i.e. key.pem and cert.pem.

$ cat key.pem and copy that under private key sections

$ cat cert.pem and copy that under certificate sections

Should be okay to start an new application.

[hkbenchan]

cURL and php5-cURL

This happens when I am setting up my new server for dev environment.

I installed everything from php5 by issuing

sudo apt-get install php5

And I think I am good to go.

Once I start deploying my codes into the environment, it throws me a 500 and no additional message, not in error.log nor default error_log folder.

I start guessing whether I am missing any extension. I checked my curl version by issuing

curl -v

It does return the version to me, so I believe curl is not the problem.

And then I use almost half a day to trace down the problem by dumping string back to the return. It seems that it is related to Facebook-PHP-SDK after hours of searching.

Everything is good without requiring the Facebook.php file. I look deep in the base_facebook.php file, which interests me are these lines:

if (!function_exists('curl_init')) {

  throw new Exception('Facebook needs the CURL PHP extension.');

}

if (!function_exists('json_decode')) {

  throw new Exception('Facebook needs the JSON PHP extension.');

}

Server is terminated in these lines.

Then I spotted the word - PHP extension. I quickly run apt-get install again to see php5-curl is there or not, it turns out it installs once I issued the apt-get install command.

And things are all solved....

P.S. how to capture exception and log in the error.log...

[iwantaclone]

The average price to clone? About $500.

[hkbenchan]

Lol

[hkbenchan]

Interesting idea

[hkbenchan]

CocoaPods breaks stopped Xcode from building

While we are trying to archive our code this morning, we encounter this issue that fail our build - custom pod script failing - that one of our Pod dependency cannot be built.

I immediately checked with my coworkers to make sure no one has changed our Podfile after last released built. Then I tried running

$ pod install

again to see if the problem can be fixed, but I have this

Analyzing dependencies

[!] Pod::Executable pull

Auto-merging iRate/1.9/iRate.podspec

CONFLICT (add/add): Merge conflict in iRate/1.9/iRate.podspec

Auto-merging iRate/1.8.3/iRate.podspec

CONFLICT (add/add): Merge conflict in iRate/1.8.3/iRate.podspec

.... other conflicts ....

CONFLICT (rename/rename): Rename "CardIO/3.2.0/CardIO.podspec"->"CardIO/3.4.0/CardIO.podspec" in branch "HEAD" rename "CardIO/3.2.0/CardIO.podspec"->"CardIO/3.4.3/CardIO.podspec" in "cf1b3f65f927bb7d12dcfb3f4e5f1323f780fd7a"

Automatic merge failed; fix conflicts and then commit the result.

From https://github.com/CocoaPods/Specs

 + 8fb9527...cf1b3f6 master     -> origin/master  (forced update)

   240a3d7..25774a3  post_install -> origin/post_install

Well, I wonder whether my Podfile is corrupted before. Soon I realised there may have a problem on CocoaPods, so I went to their website and discover they have put a notice on the homepage which says the CocoaPods spec repo is broken.

Thanks to the notice, I was able to fix the issue with waiting the

$ pod setup

command running for around 30 minutes and then I run

$ pod install

again. Everything is back to normal after fixing.

We definitely need to keep an eye on other frameworks that we are using, to prevent something similar happened but we do not notice until we run into troubles.

[hkbenchan]

UIRefreshControl on iOS7 translucent navigation bar

When using the UIRefreshControl on iOS 7 translucent navigation bar, the refresh spinner is located right under the translucent nav bar.

Possible fix:

First extends UIRefreshControl,

then override the layoutSubView method

- (void)layoutSubviews {

    [super layoutSubviews];

    // getting containing scrollView

    UIScrollView *scrollView = (UIScrollView *)self.superview;

    // saving present top contentInset, because it can be changed by refresh control

    if (!topContentInsetSaved) {

topContentInset = scrollView.contentInset.top;

        topContentInsetSaved = YES;

    }

    // saving own frame, that will be modified

CGRect newFrame = self.frame;

    // if refresh control is fully or partially behind UINavigationBar

if (scrollView.contentOffset.y + topContentInset > -newFrame.size.height) {

        // moving it with the rest of the content

        newFrame.origin.y = -newFrame.size.height;

        // if refresh control fully appeared

    } else {

        // keeping it at the same place

        newFrame.origin.y = scrollView.contentOffset.y + topContentInset;

    }

    // applying new frame to the refresh control

self.frame = newFrame;

}

As well as declare this in the .m file

@implementation MyRefreshControl {

CGFloat topContentInset;

BOOL topContentInsetSaved;

}

Final step, in that table view controller, in the viewDidLoad or somewhere else, put this:

self.refreshControl = [[MyRefreshControl alloc] init]; // create the new instance

[self.refreshControladdTarget:selfaction:@selector(pullToRefresh:) forControlEvents:UIControlEventValueChanged]; // add the event to refresh, like getting data from other sources

self.tableView.contentInset = UIEdgeInsetsMake(20 + 44, self.tableView.contentInset.left, self.tableView.contentInset.bottom, self.tableView.contentInset.right); // 20 for status bar, 44 for navigation bar

// of course need to check if the status bar becomes 44 when phone call comes)

That's it. Hope apple has documented this officially.

Solution credits: Anthony Dmitriyev Sources: http://stackoverflow.com/questions/12913208/uitableview-with-uirefreshcontrol-under-a-semi-transparent-status-bar

[hkbenchan]

First Blog

Let's welcome myself create the first blog in Tumblr!