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[labelname setString:@"string"]; |
Cocos2d Archives
Updating labels in cocos2d
Wednesday, February 29th, 2012 at
7:14 pm
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How to convert a UIView into a UIImage
Wednesday, February 29th, 2012 at
6:55 pm
To convert uiview into a uiimage ..You can use the following code.
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-(void)takeScreenShot{ UIGraphicsBeginImageContext(certificateView.bounds.size); [certificateView.layer renderInContext:UIGraphicsGetCurrentContext()]; uiimage collageImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [collageImage retain]; } |
How to add email facility in Objective C
Wednesday, February 29th, 2012 at
6:50 pm
To include email facility in your cocos program,you have to add the MessageUI framework in your program.
Then you have to include the following code.
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-(void)sendMail { MFMailComposeViewController *mailController = [[MFMailComposeViewController alloc] init]; if(!mailController) { return; } mailController.mailComposeDelegate = self; [mailController setSubject:@"Certificate"]; ///for setting the message subject. [mailController setMessageBody:@"Rate this app if you like it.Find similar products at www.schogini.in ." isHTML:YES];///for setting the message body. [mailController addAttachmentData:UIImageJPEGRepresentation (collageImage,0.5) mimeType:@"image/jpeg" fileName:@"image.jpg"];//for adding an attachmet. //[mailController setCcRecipients:[NSArray arrayWithObjects:@"<a href="mailto:augustine@schogini.com">augustine@schogini.com</a>",nil]];//to set a ccrecipient. UIWindow *topWindow; NSArray *windows = [[UIApplication sharedApplication] windows]; for(topWindow in windows) { if (topWindow.windowLevel == UIWindowLevelNormal) break; } UIView *rootView = [[topWindow subviews] objectAtIndex:0]; id nextResponder = [rootView nextResponder]; UIViewController *rootViewController = nextResponder; while (rootViewController.modalViewController != nil) rootViewController = rootViewController.modalViewController; UIViewController *topViewController = rootViewController; [topViewController presentModalViewController:mailController animated:YES]; } //Also you have to add the mail composer control delegate.. - (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { switch (result) { case MFMailComposeResultSent: break; case MFMailComposeResultSaved: break; case MFMailComposeResultCancelled: NSLog(@"cancelled....."); break; case MFMailComposeResultFailed: NSLog(@"failed....."); break; } [controller dismissModalViewControllerAnimated:YES]; [controller release]; } |
Multi Touch in Cocos2d
Friday, February 24th, 2012 at
11:01 am
To recieve multi-touch events, you have to activate them. You can do this by adding the following code in your AppDelegate’s applicationDidFinishLaunching:
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[glView setMultipleTouchEnabled:YES]; |
To reverse all actions
Friday, February 24th, 2012 at
10:43 am
Almost all actions have the reverse method implemented. Basically it creates a new action with the reverse behavior.
Example:
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id move = [CCMoveBy actionWithDuration:2 position: ccp(80,80)]; id move_reverse = [move reverse]; |
The move_reverse action will be a CCMoveBy action of duration 2, but with the position value of ccp(-80,-80).
To pause/resume all actions
Friday, February 24th, 2012 at
10:39 am
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// Pause actions [[CCActionManager sharedManager ] pauseAllActionsForTarget:sprite ] ; // resume actions [[CCActionManager sharedManager ] resumeAllActionsForTarget:sprite ] ; |
Incoming search terms:
- cocos2d-x action pause
CCSpawn action in Cocos2d
Friday, February 24th, 2012 at
10:26 am
The CCSpawn action lets you run several actions at the same time. The duration of the CCSpawn action will be the duration of the longest sub-action.
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id action = [CCSpawn actions: [CCJumpBy actionWithDuration:2 position:ccp(300,0) height:50 jumps:4], [CCRotateBy actionWithDuration: 2 angle: 720], nil]; [sprite runAction:action]; |
Speed Actions in Cocos2d
Friday, February 24th, 2012 at
9:03 am
The CCSpeed action modifies the duration of the inner action.
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id move = [CCMoveBy actionWithDuration:3 position:ccp(350,0)]; id action = [CCSpeed actionWithAction: move speed:1.0f]; // no speed modification // but you can modify the speed later [action setSpeed: 2.5f]; // speed is 2.5 faster [action setSpeed: 0.5f]; // speed is 0.5 faster (it means 2 times slower) |
difference between @synthesize and @dynamic
Friday, February 24th, 2012 at
8:58 am
@synthesize will generate getter and setter methods for your property. @dynamic just tells the compiler that the getter and setter methods are implemented not by the class itself but somewhere else (like the superclass)
Uses for @dynamic are e.g. with subclasses of NSManagedObject (CoreData) or when you want to create an outlet for a property defined by a superclass that was not defined as an outlet:
Super class:
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@property (nonatomic, retain) NSButton *someButton; ... @synthesize someButton; |
Subclass:
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@property (nonatomic, retain) IBOutlet NSButton *someButton; ... @dynamic someButton; |
Incoming search terms:
- distinguish between synthasize & dynamic in ios
CallFuncN and CallFuncND Actions
Friday, February 24th, 2012 at
8:56 am
There are two variations of CCCallFunc. They are CCCallFuncN and CCCallFuncND.
CCCallFuncN takes the node as an argument, and CCCallFuncND takes the node and a pointer to some data.
For example:
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id actionCallFuncN = [CCCallFuncN actionWithTarget:self selector:@selector(doATaskN:)]; // make sure you notice the trailing : id actionCallFuncND = [CCCallFuncND actionWithTarget:self selector:@selector(doATaskND:data:) data:pointerToSomeData]; - (void) doATaskN: (id)node { //some code } - (void) doATaskND: (id)node data:(void*)d { //some code } |
