2010 Archives

UIViewAnimationWithBlocks使用block,动画结束后不需要使用回调方法，相比UIViewAnimation 方式要简洁很多

- (void)setSelectedVeg:(id)sender

{    

    [selectedVegetableIcon setAlpha:0.0];

    [UIView animateWithDuration:0.4

                     animations: ^{

                         float angle = [self spinnerAngleForVegetable:sender];

                         [vegetableSpinner setTransform:CGAffineTransformMakeRotation(angle)];

                     } 

                     completion:^(BOOL finished) {

                         [selectedVegetableIcon setAlpha:1.0];

                     }];

}

以上代码来自WWDC2010 iPlant PlantCareViem.m

UIViewAnimation style Animation

- (void)setSelectedVeg:(id)sender

{    

    [selectedVegetableIcon setAlpha:0.0];

[UIView beginAnimations:@"setSelectedVeg" context:nil];

float angle = [self spinnerAngleForVegetable:sender];

[vegetableSpinner setTransform:CGAffineTransformMakeRotation(angle)];

[UIView setAnimationDuration:0.4];

[UIView setAnimationDelegate:self];

[UIView setAnimationDidStopSelector:@selector(done)];

[UIView commitAnimations];

}

-(void)done

{

[selectedVegetableIcon setAlpha:1.0];

}

2010-06-15 09:35:14.408 JoyPlayer[494:207] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit/UIKit-984.38/UITableView.m:772

2010-06-15 09:35:14.408 JoyPlayer[494:207] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of sections.  The number of sections contained in the table view after the update (2) must be equal to the number of sections contained in the table view before the update (1), plus or minus the number of sections inserted or deleted (0 inserted, 0 deleted).'

2010-06-15 09:35:14.409 JoyPlayer[494:207] Stack: (

    36209755,

    2528503049,

    36293691,

    2776852,

    5075846,

    5020217,

    43132,

    387640,

    2454948,

    2454803,

    32134584,

    32132632,

    32135830,

    31795157,

    35993825,

    35990600,

    41654157,

    41654354,

    4763651,

    10756,

    10610

)

- (IBAction)sendSMS {

BOOL canSendSMS = [MFMessageComposeViewController canSendText];

NSLog(@"can send SMS [%d]", canSendSMS);

if (canSendSMS) {

MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];

picker.messageComposeDelegate = self;

picker.navigationBar.tintColor = [UIColor blackColor];

picker.body = @"test";

picker.recipients = [NSArray arrayWithObject:@"186-0123-0123"];

[self presentModalViewController:picker animated:YES];

[picker release];

}

}

- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result {

// Notifies users about errors associated with the interface

switch (result) {

case MessageComposeResultCancelled:

if (DEBUG) NSLog(@"Result: canceled");

break;

case MessageComposeResultSent:

if (DEBUG) NSLog(@"Result: Sent");

break;

case MessageComposeResultFailed:

if (DEBUG) NSLog(@"Result: Failed");

break;

default:

break;

}

[self dismissModalViewControllerAnimated:YES];

}

LOGO_320×44.png 图片显示在背景上，

- (void)drawRect:(CGRect)rect {

//加入旋转坐标系代码

    // Drawing code

UIImage *navBarImage = [UIImage imageNamed:@"LOGO_320×44.png"];

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextTranslateCTM(context, 0.0, self.frame.size.height);

CGContextScaleCTM(context, 1.0, -1.0);

CGPoint center=self.center;

CGImageRef cgImage= CGImageCreateWithImageInRect(navBarImage.CGImage, CGRectMake(0, 0, 1, 44));

CGContextDrawImage(context, CGRectMake(center.x-160-80, 0, 80, self.frame.size.height), cgImage);

CGContextDrawImage(context, CGRectMake(center.x-160, 0, 320, self.frame.size.height), navBarImage.CGImage);

CGContextDrawImage(context, CGRectMake(center.x+160, 0, 80, self.frame.size.height), cgImage);

}

@end

old code

CGContextDrawImage(context, CGRectMake(0, 0, self.frame.size.width, self.frame.size.height), navBarImage.CGImage);