typedefstruct{

    NSUIntegerline;

    NSUIntegerrow;

} TileLocation;

//转换为NSValue

NSValue*value = [NSValuevalueWithBytes:&tileLocobjCType:@encode(TileLocation)];

//转换回结构体

TileLocation loc;

[valuegetValue:&loc];

    CGRect rect1 = CGRectMake(0, 0, image1.size.width, image1.size.height);

    CGRect rect2 = CGRectMake(image1.size.width/4, 0, image1.size.width/2, image1.size.height/2);

    NSValue *rectValue1 = nil;

    NSValue *rectValue2 = nil;

    rectValue1 = [NSValue valueWithBytes:&rect1 objCType:@encode(CGRect)];

    rectValue2 = [NSValue valueWithBytes:&rect2 objCType:@encode(CGRect)];

    NSArray *rectArr = [NSArray arrayWithObjects:rectValue1,rectValue2, nil];

        CGRect tmpRect;

        [[rects objectAtIndex:i] getValue:&tmpRect];