ios开发点滴

    //将NSRect放入NSArray中

    NSMutableArray *array = [[NSMutableArrayalloc] init];

    NSValue *value;

    CGRect rect = CGRectMake(0,0, 320, 480);

    value = [NSValue valueWithBytes:&rectobjCType:@encode(CGRect)];

    [array addObject:value];

    NSLog(@"array:%@",array);

    

    //从Array中提取

    value = [array objectAtIndex:0];

    [value getValue:&rect];

    NSLog(@"value:%@",value);