把CGPoint对象添加到数组

NSMutableArray *myPointArray = [[NSMutableArray alloc] init];
     
    // add
    CGPoint myPoint = CGPointMake(88.0f, 88.0f);
    [myPointArray addObject:NSStringFromCGPoint(myPoint)];
     
    // read
    CGPoint retrievedPoint = CGPointFromString([myPointArray objectAtIndex:0]);
    NSLog(@"retrievedPoint = %@", NSStringFromCGPoint(retrievedPoint));
     
    [myPointArray release];