Some deprecated problems encountered during ios7 Development

Cell. textLabel. textAlignment = UITextAlignmentCenter;

Now we need to write cell. textLabel. textAlignment = NSTextAlignmentCenter;

UITableViewCell * cell = [[UITableViewCell alloc] initWithFrame: CGRectZero reuseIdentifier: nil] autorelease];

To be written

Static NSString * TableSampleIdentifier = @ "TableSampleIdentifier ";

UITableViewCell * cell = [[UITableViewCellalloc] initWithStyle: UITableViewCellStyleValue1reuseIdentifier: TableSampleIdentifier];

[SelfpresentModalViewController: calendarViewanimated: YES];

Change to [selfpresentViewController: calendarViewanimated: YEScompletion: ^ {}];

The difference between the new interface is that it provides a parameter that allows you to input a block. The callback method of this block is called after the viewWillDisappear method of VC. That is, run the callback after the hidden VC object is released.

Benefits of doing so: it facilitates the convergence and conversion between multiple UI effects.

PageControl control on IOS7

Call [self. subviewsobjectAtIndex: I]

The retrieved object is not a UIImageView, but a UIView.

Therefore, the updateDots method should be written as follows:

-(void) updateDots{        for (int i = 0; i < [self.subviews count]; i++) {        UIView* dotView = [self.subviews objectAtIndex:i];                if ([dotView isKindOfClass:[UIImageView class]]) {            UIImageView* dot = (UIImageView*)dotView;            if (i == self.currentPage)                dot.image = _activeImage;            else                dot.image = _inactiveImage;        }else{            if (i == self.currentPage)                [dotView setBackgroundColor:[UIColor colorWithPatternImage:_activeImage]];            else                [dotView setBackgroundColor:[UIColor colorWithPatternImage:_inactiveImage]];        }           }}

[Text drawAtPoint: textPt withFont: [UIFontsystemFontOfSize: 14.0f]

Write in IOS7

 #define NLSystemVersionGreaterOrEqualThan(version)  ([[[UIDevice currentDevice] systemVersion] floatValue] >= version)    #define IOS7_OR_LATER   NLSystemVersionGreaterOrEqualThan(7.0)    if (IOS7_OR_LATER) {        UIFont* font = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];        font = [font fontWithSize:14.0f];        [text drawAtPoint:textPt withAttributes:@{NSFontAttributeName:font}];    }else {        [text drawAtPoint:textPt withFont:[UIFont systemFontOfSize:14.0f]];    }