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2014/10/15 ¤U¤È 10:11:05
iphone Programming Glossary: linesHow do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell UIFont fontWithName @ Helvetica size 17.0 You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs. The next part is to specify how large.. 17.0 You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs. The next part is to specify how large your UITableViewCell will be so do that in your heightForRowAtIndexPath..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected mentioned in the crash log MyViewController MyImageTask . Instead atos points me to totally benign lines of code in a completely unrelated class. I verified again that I'm working with the exact dSYM and IPA..
OpenGL ES iPhone - drawing anti aliased lines http://stackoverflow.com/questions/1813035/opengl-es-iphone-drawing-anti-aliased-lines ES iPhone drawing anti aliased lines Normally you'd use something like glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glEnable GL_BLEND.. glDisableClientState GL_VERTEX_ARRAY It looks good in the iPhone simulator but on the iPhone the lines get extremely thin and w o any anti aliasing. How do you get AA on iPhone iphone opengl es line antialiasing..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application you'll get debug messages. When you're ready to release a beta or final release all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables..
Any way to pre populate core data? http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data Core Data iPhone app Or even Mac app using the same object model as your List app. Write a few lines of code to save the default managed objects you want to the store. Then run that app in the simulator...
How to add more details in MKAnnotation in iOS http://stackoverflow.com/questions/2342070/how-to-add-more-details-in-mkannotation-in-ios details in MKAnnotation like location title description date location name. So it will be four lines that are needed. But I found that only 2 parameters can be passed to MKAnnotation which are title and..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew p1.x ”——————†p1.x p1.y c y' y where c is the y coordinate of the intersection point of the lines joining p1 and p3 and p2 and p4. Now notice the x y factor in the transformation. This indicates such..
Universal iPhone/iPad application debug compilation error for iPhone testing http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing built programmatically rather than using XIB's I've split the 2 device logics using the following lines in the main.m method if UI_USER_INTERFACE_IDIOM UIUserInterfaceIdiomPad retVal UIApplicationMain argc..
http://stackoverflow.com/questions/2711297/underline-text-in-uilabel text in UIlabel How can I underline a text that could be multiple lines of string I find some people suggest UIWebView but it is obviously too heave a class for just text rendering... Apple added NSAttributedString support for UILabel so now it's much easier and works for multiple lines NSDictionary underlineAttribute @ NSUnderlineStyleAttributeName @ NSUnderlineStyleSingle myLabel.attributedText..
Drawing a route in mapkit in iphone sdk http://stackoverflow.com/questions/2834523/drawing-a-route-in-mapkit-in-iphone-sdk the distance from current location. I am aware of sites on the internet which tell how to draw polylines on map. But most of the examples had a preloaded .csv file with various coordinates. Is there an alternate.. improve this question Tricky one. There is no way to do that with mapkit its easy enough to draw lines when you know the coordinates but mapkit won't give you access to the roads or other routing information...
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 script courtesy of Frederik Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output after 200 lines. Select your Target and in the Run Script Phase you MUST untick Show environment variables in build..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file C style. This also seems like a ridiculous way to write to a PDF file having to calculate where lines and other objects will be placed. void CreatePDFFile CGRect pageRect const char filename This code..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview the original CGImageRelease bitmapContext return the image return theImage Now you just need few lines of code. I put stuff in my viewController viewDidLoad method because it's faster but you can use it..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in the text view so that I can adjust the parent view accordingly As another example look at the Notes.. in the Calendar application note how the cell and the UITextView it contains expands to hold all lines of text in the notes string. iphone cocoa touch uikit share improve this question There is actually..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature NSDateFormatter with a version that would set the locale in the init method. Requires changing two lines the alloc init line and the added import. Added This is what I've come up with so far seems to work..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons to ARC as soon as you can and never look back. EDIT I've seen a couple of comments along the lines of using ARC is no substitute for knowing the Cocoa memory management rules. This is mostly true but..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell UILineBreakModeWordWrap cell.textLabel.numberOfLines 0 cell.textLabel.font UIFont fontWithName @ Helvetica size 17.0 You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs. The next part is to specify how large your UITableViewCell will be so do that in your heightForRowAtIndexPath.. 0 cell.textLabel.font UIFont fontWithName @ Helvetica size 17.0 You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs. The next part is to specify how large your UITableViewCell will be so do that in your heightForRowAtIndexPath function CGFloat tableView UITableView..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected The atos output is not even from the same class that's mentioned in the crash log MyViewController MyImageTask . Instead atos points me to totally benign lines of code in a completely unrelated class. I verified again that I'm working with the exact dSYM and IPA that I submitted to Apple. My atos command Applications Xcode.app..
OpenGL ES iPhone - drawing anti aliased lines http://stackoverflow.com/questions/1813035/opengl-es-iphone-drawing-anti-aliased-lines ES iPhone drawing anti aliased lines Normally you'd use something like glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glEnable GL_BLEND glEnable GL_LINE_SMOOTH glLineWidth 2.0f glVertexPointer 2.. GL_VERTEX_ARRAY glDrawArrays GL_LINE_STRIP 0 num_points glDisableClientState GL_VERTEX_ARRAY It looks good in the iPhone simulator but on the iPhone the lines get extremely thin and w o any anti aliasing. How do you get AA on iPhone iphone opengl es line antialiasing share improve this question One can achieve the..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application of NSLog use DLog everywhere. When testing and debugging you'll get debug messages. When you're ready to release a beta or final release all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of NSLogs required. Picking your build target..
Any way to pre populate core data? http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data the best way and doesn't require SQL knowledge Create a quick Core Data iPhone app Or even Mac app using the same object model as your List app. Write a few lines of code to save the default managed objects you want to the store. Then run that app in the simulator. Now go to ~ Library Application Support iPhone Simulator..
How to add more details in MKAnnotation in iOS http://stackoverflow.com/questions/2342070/how-to-add-more-details-in-mkannotation-in-ios to add more details in MKAnnotation in iOS I want to add more details in MKAnnotation like location title description date location name. So it will be four lines that are needed. But I found that only 2 parameters can be passed to MKAnnotation which are title and subtitle. How can I add more details on the map Plz help me..Thanks..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew direction. A naive transformation rule is y c x' x p1.x ”——————†p1.x p1.y c y' y where c is the y coordinate of the intersection point of the lines joining p1 and p3 and p2 and p4. Now notice the x y factor in the transformation. This indicates such a transform is not linear. Therefore CATransform3D cannot..
Universal iPhone/iPad application debug compilation error for iPhone testing http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing 0B88 41D4 AF56 77B66B324640 Test.app TEST As the App is built programmatically rather than using XIB's I've split the 2 device logics using the following lines in the main.m method if UI_USER_INTERFACE_IDIOM UIUserInterfaceIdiomPad retVal UIApplicationMain argc argv nil @ AppDelegate_Pad else retVal UIApplicationMain argc..
http://stackoverflow.com/questions/2711297/underline-text-in-uilabel text in UIlabel How can I underline a text that could be multiple lines of string I find some people suggest UIWebView but it is obviously too heave a class for just text rendering. My thoughts was to figure out the start point and.. CGContextStrokePath ctx super drawRect rect UPD As of iOS 6 Apple added NSAttributedString support for UILabel so now it's much easier and works for multiple lines NSDictionary underlineAttribute @ NSUnderlineStyleAttributeName @ NSUnderlineStyleSingle myLabel.attributedText NSAttributedString alloc initWithString @ Test string..
Drawing a route in mapkit in iphone sdk http://stackoverflow.com/questions/2834523/drawing-a-route-in-mapkit-in-iphone-sdk location I want to be able to draw route as well as inform the distance from current location. I am aware of sites on the internet which tell how to draw polylines on map. But most of the examples had a preloaded .csv file with various coordinates. Is there an alternate way to get the coordinates from Google or any other provider.. any direct way for this problem iphone mapkit share improve this question Tricky one. There is no way to do that with mapkit its easy enough to draw lines when you know the coordinates but mapkit won't give you access to the roads or other routing information. I'd say you need to call an external API to get your data...
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 a workaround Add the following code to the very end of the script courtesy of Frederik Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output after 200 lines. Select your Target and in the Run Script Phase you MUST untick Show environment variables in build log if you're using a custom build output directory for XCode4..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file but it was mostly written in C. Looking for more Objective C style. This also seems like a ridiculous way to write to a PDF file having to calculate where lines and other objects will be placed. void CreatePDFFile CGRect pageRect const char filename This code block sets up our PDF Context so that we can draw to it CGContextRef..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview is retained by the property setting above so we can release the original CGImageRelease bitmapContext return the image return theImage Now you just need few lines of code. I put stuff in my viewController viewDidLoad method because it's faster but you can use it also in your custom UIView with the layoutSubviews method in..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in the text view so that I can adjust the parent view accordingly As another example look at the Notes field for events in the Calendar application note how the.. As another example look at the Notes field for events in the Calendar application note how the cell and the UITextView it contains expands to hold all lines of text in the notes string. iphone cocoa touch uikit share improve this question There is actually a very easy way to do resizing of the UITextView to its..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature making the code to obscure My first instinct is to override NSDateFormatter with a version that would set the locale in the init method. Requires changing two lines the alloc init line and the added import. Added This is what I've come up with so far seems to work in all scenarios @implementation BNSDateFormatter id init static..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as you can and never look back. EDIT I've seen a couple of comments along the lines of using ARC is no substitute for knowing the Cocoa memory management rules. This is mostly true but it's important to understand why and why not. First if all..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell 0 cell.textLabel.font UIFont fontWithName @ Helvetica size 17.0 You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs. The next part is to specify how large your UITableViewCell.. @ Helvetica size 17.0 You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs. The next part is to specify how large your UITableViewCell will be so do that in your heightForRowAtIndexPath..
iOS crash reports: atos not working as expected http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected same class that's mentioned in the crash log MyViewController MyImageTask . Instead atos points me to totally benign lines of code in a completely unrelated class. I verified again that I'm working with the exact dSYM and IPA that I submitted..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application testing and debugging you'll get debug messages. When you're ready to release a beta or final release all those DLog lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of NSLogs..
Any way to pre populate core data? http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data Create a quick Core Data iPhone app Or even Mac app using the same object model as your List app. Write a few lines of code to save the default managed objects you want to the store. Then run that app in the simulator. Now go to ~ Library..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew rule is y c x' x p1.x ”——————†p1.x p1.y c y' y where c is the y coordinate of the intersection point of the lines joining p1 and p3 and p2 and p4. Now notice the x y factor in the transformation. This indicates such a transform is not..
Universal iPhone/iPad application debug compilation error for iPhone testing http://stackoverflow.com/questions/2618889/universal-iphone-ipad-application-debug-compilation-error-for-iphone-testing TEST As the App is built programmatically rather than using XIB's I've split the 2 device logics using the following lines in the main.m method if UI_USER_INTERFACE_IDIOM UIUserInterfaceIdiomPad retVal UIApplicationMain argc argv nil @ AppDelegate_Pad..
http://stackoverflow.com/questions/2711297/underline-text-in-uilabel text in UIlabel How can I underline a text that could be multiple lines of string I find some people suggest UIWebView but it is obviously too heave a class for just text rendering. My thoughts.. rect UPD As of iOS 6 Apple added NSAttributedString support for UILabel so now it's much easier and works for multiple lines NSDictionary underlineAttribute @ NSUnderlineStyleAttributeName @ NSUnderlineStyleSingle myLabel.attributedText NSAttributedString..
Drawing a route in mapkit in iphone sdk http://stackoverflow.com/questions/2834523/drawing-a-route-in-mapkit-in-iphone-sdk as well as inform the distance from current location. I am aware of sites on the internet which tell how to draw polylines on map. But most of the examples had a preloaded .csv file with various coordinates. Is there an alternate way to get the.. mapkit share improve this question Tricky one. There is no way to do that with mapkit its easy enough to draw lines when you know the coordinates but mapkit won't give you access to the roads or other routing information. I'd say you need..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 the very end of the script courtesy of Frederik Wallner open CREATING_UNIVERSAL_DIR Apple deletes all output after 200 lines. Select your Target and in the Run Script Phase you MUST untick Show environment variables in build log if you're using..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file for more Objective C style. This also seems like a ridiculous way to write to a PDF file having to calculate where lines and other objects will be placed. void CreatePDFFile CGRect pageRect const char filename This code block sets up our PDF..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview so we can release the original CGImageRelease bitmapContext return the image return theImage Now you just need few lines of code. I put stuff in my viewController viewDidLoad method because it's faster but you can use it also in your custom..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content add another line of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in the text view so that I can adjust the parent view accordingly As another example look at the Notes field for events.. field for events in the Calendar application note how the cell and the UITextView it contains expands to hold all lines of text in the notes string. iphone cocoa touch uikit share improve this question There is actually a very easy way..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature is to override NSDateFormatter with a version that would set the locale in the init method. Requires changing two lines the alloc init line and the added import. Added This is what I've come up with so far seems to work in all scenarios @implementation..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons In conclusion switch to ARC as soon as you can and never look back. EDIT I've seen a couple of comments along the lines of using ARC is no substitute for knowing the Cocoa memory management rules. This is mostly true but it's important to understand..
How to find UILabel's number of Lines http://stackoverflow.com/questions/4172615/how-to-find-uilabels-number-of-lines to find UILabel's number of Lines I displayed the text in UILabel by using wrap method. Now I want to need to find the how many number of line is there in.. view controller super viewDidLoad UILabel myLabel UILabel alloc initWithFrame CGRectMake 50 50 200 350 myLabel.numberOfLines 0 myLabel.lineBreakMode UILineBreakModeWordWrap myLabel.text @ This is some text in a UILabel which is long enough to wrap..
Apps with placeholder text will be rejected [closed] http://stackoverflow.com/questions/4472632/apps-with-placeholder-text-will-be-rejected with placeholder text will be rejected closed In App Review Guide Lines under 3. Metadata name descriptions ratings rankings etc point number 3.2 . It is written Apps with placeholder text will..
Change the UITextView Text Direction http://stackoverflow.com/questions/4905500/change-the-uitextview-text-direction if you want to append the text. NSString reverseText NSString text withFont UIFont font carretPosition NSRange cpos Lines NSMutableArray lines Bounds CGRect bounds void setText NSString txt @end ReverseTextVC.m @implementation ReverseTextVC id.. i result ReverseTextVC reverseText word substringWithRange r withFont _tv.font carretPosition rng Lines _lines Bounds _tv.bounds _tv.text result #pragma mark #pragma mark UITextViewDelegate BOOL textView UITextView textView.. NSString text NSRange rng textView.text ReverseTextVC reverseText text withFont textView.font carretPosition rng Lines _lines Bounds textView.bounds textView.selectedRange rng return NO #pragma mark #pragma mark Static NSString reverseText..
Line spacing and paragraph alignment in CoreText http://stackoverflow.com/questions/5312962/line-spacing-and-paragraph-alignment-in-coretext underneath the first line is too big I understand that this is because the 1st character could be a g y p q etc. Lines below the first line now do not line up with corresponding lines in the next column. Any advice on how to overcome these.. sizeof CGFloat topSpacing kCTParagraphStyleSpecifierLineSpacing sizeof CGFloat spaceBetweenLines kCTParagraphStyleSpecifierMinimumLineHeight sizeof CGFloat lineHeight kCTParagraphStyleSpecifierMaximumLineHeight sizeof..
http://stackoverflow.com/questions/6962641/get-the-nsstring-height for a Single Line of Text whereas sizeWithFont constrainedToSize lineBreakMode is for Computing Metrics for Multiple Lines of Text . From the documentation Computing Metrics for a Single Line of Text sizeWithFont sizeWithFont forWidth lineBreakMode.. forWidth lineBreakMode sizeWithFont minFontSize actualFontSize forWidth lineBreakMode Computing Metrics for Multiple Lines of Text sizeWithFont constrainedToSize sizeWithFont constrainedToSize lineBreakMode Try using sizeWithFont constrainedToSize..
iPhone fetch data dictionary from keychain http://stackoverflow.com/questions/7827730/iphone-fetch-data-dictionary-from-keychain we use a retained bridge then we need to release the resulting Core Foundation object ourself. Which we do in line 4. Lines 2 3 and 4 are pure C code using Core Foundation types so ARC will have nothing to do or complain about them. In line 5 we..
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