NSValue包装对象指针，CGRect结构体等

http://blog.csdn.net/asianjiang/article/details/5708281

 

@interface NSValue (NSValueUIGeometryExtensions)

+ (NSValue *)valueWithPointer:(const void *)pointer;//保存对象指针

+ (NSValue *)valueWithCGPoint:(CGPoint)point;//保存CGPoint结构体
+ (NSValue *)valueWithCGSize:(CGSize)size;//保存CGSize结构体
+ (NSValue *)valueWithCGRect:(CGRect)rect;//保存CGRect结构体
+ (NSValue *)valueWithCGAffineTransform:(CGAffineTransform)transform;
+ (NSValue *)valueWithUIEdgeInsets:(UIEdgeInsets)insets;

- (void *)pointerValue;
- (CGPoint)CGPointValue;
- (CGSize)CGSizeValue;
- (CGRect)CGRectValue;
- (CGAffineTransform)CGAffineTransformValue;
- (UIEdgeInsets)UIEdgeInsetsValue;

@end

//
//  NSArrayAndSelectorViewController.m
//  NSArrayAndSelector
//
//  Created by Lixf on 09-10-15.
//  Copyright Lixf 2009. All rights reserved.
//

#import "NSArrayAndSelectorViewController.h"

@implementation NSArrayAndSelectorViewController
@synthesize SelectorArray, RectArray, TransformArray;


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];

    //NSValue包装指针
    NSValue* start = [NSValue valueWithPointer:@selector(start:)];
    NSValue* help = [NSValue valueWithPointer:@selector(help:)];

    //NSArray 添加NSValue包装后的指针
    NSArray *Array = [[NSArray alloc] initWithObjects:start, help, nil];
    self.SelectorArray = Array;
    [Array release];


    CGRect rect1 = {10, 10, 200, 200};
    CGRect rect2 = {20, 20, 100, 100};

    //NSValue包装CGRect结构
    NSValue *aRect1 = [NSValue valueWithCGRect:rect1];
    NSValue *aRect2 = [NSValue valueWithCGRect:rect2];
    //NSArray 添加NSValue包装后的指针
    NSArray *reArray = [[NSArray alloc] initWithObjects:aRect1, aRect2, nil];
    self.RectArray = reArray;
    [reArray release];

    //CGAffineTransform
    CGAffineTransform transform1 = CGAffineTransformMakeRotation(40);
    CGAffineTransform transform2 = CGAffineTransformMakeRotation(-40);
    NSValue *aTransform1 = [NSValue valueWithCGAffineTransform:transform1];
    NSValue *aTransform2 = [NSValue valueWithCGAffineTransform:transform2];
    NSArray *TransArray = [[NSArray alloc] initWithObjects:aTransform1, aTransform2, nil];
    self.TransformArray = TransArray;
    [TransArray release];
    [testView setFrame:[[RectArray objectAtIndex:0] CGRectValue]];
    [testView setTransform:[[TransformArray objectAtIndex:0] CGAffineTransformValue]];
    [self performSelector:[[SelectorArray objectAtIndex:0] pointerValue] withObject:nil afterDelay:0.5];
}

-(void)start:(id)sender{
    NSLog(@"start");
    [testView setFrame:[[RectArray objectAtIndex:1] CGRectValue]];
    [testView setTransform:[[TransformArray objectAtIndex:1] CGAffineTransformValue]];
    [self performSelector:[[SelectorArray objectAtIndex:1] pointerValue] withObject:nil afterDelay:0.5];
}

-(void)help:(id)sender{
    NSLog(@"help");
    //[testView setFrame:[[RectArray objectAtIndex:0] CGRectValue]];
    //[testView setTransform:[[TransformArray objectAtIndex:0] CGAffineTransformValue]];
}