IOS6 in Practice 記錄1

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- (UIImage*)imageWithImage:(UIImage*)image               scaledToSize:(CGSize)newSize;{    UIGraphicsBeginImageContext( newSize );    [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];    UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();    UIGraphicsEndImageContext();        return newImage;}

 Presenting view controllers on detached view controllers is discouraged

http://stackoverflow.com/questions/19890761/warning-presenting-view-controllers-on-detached-view-controllers-is-discourage

 可以移動的imageview

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {    [super touchesMoved:touches withEvent:event];        float deltaX = [[touches anyObject] locationInView:self].x - [[touches anyObject] previousLocationInView:self].x;    float deltaY = [[touches anyObject] locationInView:self].y - [[touches anyObject] previousLocationInView:self].y;    self.transform = CGAffineTransformTranslate(self.transform, deltaX, deltaY);}

 

發郵件

NSData *imageAsData = UIImagePNGRepresentation(i);    [mailController addAttachmentData:imageAsData mimeType:@"image/png" fileName:@"PicDecor.png"];    [mailController setSubject:@"My PicDecor Image"];       [self.view.window.rootViewController presentViewController:mailController                                                     animated:YES completion:nil];

 

IOS6 in Practice 記錄1