How to change font size of a row in tableview (iOS Developer)

    cell.textLabel.font = [UIFont systemFontOfSize:12];

UITableView - change section header color iOS 6 and up

- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section

{
    view.tintColor = [UIColor clearColor];
   
    UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view;
    [header.textLabel setTextColor:[UIColor whiteColor]];
   

}

Icon and Image Sizes iOS 7

Description	Size for iPhone 5 and iPod touch (high resolution)	Size for iPhone and iPod touch (high resolution)	Size for iPad (high resolution)	Size for iPad 2 and iPad mini (standard resolution)
App icon (required for all apps)	120 x 120	120 x 120	152 x 152	76 x 76
App icon for the App Store (required for all apps)	1024 x 1024	1024 x 1024	1024 x 1024	1024 x 1024
Launch image (required for all apps)	640 x 1136	640 x 960	1536 x 2048 (portrait) 2048 x 1536 (landscape)	768 x 1024 (portrait) 1024 x 768 (landscape)
Spotlight search results icon (recommended)	80 x 80	80 x 80	80 x 80	40 x 40
Settings icon (recommended)	58 x 58	58 x 58	58 x 58	29 x 29
Toolbar and navigation bar icon (optional)	About 44 x 44	About 44 x 44	About 44 x 44	About 22 x 22
Tab bar icon (optional)	About 50 x 50 (maximum: 96 x 64)	About 50 x 50 (maximum: 96 x 64)	About 50 x 50 (maximum: 96 x 64)	About 25 x 25 (maximum: 48 x 32)
Default Newsstand cover icon for the App Store (required for Newsstand apps)	At least 512 pixels on the longest edge	At least 512 pixels on the longest edge	At least 512 pixels on the longest edge	At least 256 pixels on the longest edge
Web clip icon (recommended for web apps and websites)	120 x 120	120 x 120	152 x 152	76 x 76

Designing app for iOS 7

Deference, clarity and depth are the main themes for iOS 7 development. Focus on core functionalities and content and keep the design simple.

Provide clarity:

1. Use plenty of negative space, negative space make important content more noticeable. 
2. Let color simplify the UI.
3. Ensure legibility by using the system fonts. 
4. Embrace borderless buttons.   

Content is at the heart of iOS 7: 

1. Take advantage of the whole screen, let content extend to the edges.
2. Reconsider visual indicators of physicality and realism, avoid heavy UI elements, keep it simple, focus on content and let the UI have the supporting role. 
3. Let translucent UI elements hint at the content behind them.

How to create iCloud entitlements file manually?

Creating entitlements file manually is very simple, open the text editor and just copy and paste the following lines of code: (save it as <yourappname>.entitlements)

<?xml version="1.0" encoding="UTF-8">
<!DOCTYPE plist PUBIC "-//Apple//DTD PLIST" 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>apple.developer.ubiquity-container-identifiers</key>

<array>
<string>$(TeamIdentifierPrefix).com.yourdomain.icloudapp</string>
</array>

<key>com.apple.developer.ubiquity-kvstore-identifier</key>
<string>$($(TeamIdentifierPrefix).com.yourdomain.icloudapp)</string>

</dict>
</plist>

After saving you file simply drag and drop it to your app on xcode.

written by: infinitywebseo 

The executable was signed with invalid entitlements. (0xE8008016)

Summary: if you have this error --> Try creating your new provisional profile through xcode > organiser it may solve the problem. (Don't create it trough your developer account on-line)

I had this error when I tried to run an app that uses icloud on an ios device. For icloud application you must create an app id  and new provisional profile.

What I did was that I create my new provisional trough my apple developer account website. Even thought I refreshed my provisional profile on xcode > organiser, I couldn't get rid of the error,  never mind few hours of searching on the web trying to find out the answer which was unsuccessful.

At the end, I just deleted my app id, and provisional profile. Then I create  a new app id, and this time I create my provisional profile through xcode > organiser, run my app again and it just worked.

written by: infinitywebseo