Question

i have getting CGPoint value in my array like this

@interface CanvasView : UIView{
 NSMutableArray *_array;
}
@property (nonatomic, retain) NSMutableArray *_array;

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    CGPoint currentPoint = [touch locationInView:self];
    [_array addObject:[NSValue valueWithCGPoint: currentPoint]];
}

i have called this array in touchesEnded its working fine i will get values of nspoint

    - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {  
        NSLog(@"roomAtX:%@ ",_array);
    PieClass *myPieClass=[[PieClass alloc]initWithFrame:CGRectMake(8, 297, 200, 300)];
    [self addSubview:myPieClass];
}

this is my console out put

"NSPoint: {595, 158}",
"NSPoint: {558, 154}",
"NSPoint: {535, 152}",
"NSPoint: {518, 152}",
"NSPoint: {500, 160}",
"NSPoint: {482, 175}",

now i want use this array to another class so that i called this for my another class
like this

- (void)drawRect:(CGRect)rect
{
      CanvasView *cnava =[[CanvasView alloc]init];
        NSLog(@"nextview:%@ ",cnava._array);

}

but here i get nextview:(null)
kindly guide how can access that array in other classes .

Answer 1

Just have a property of PieClass

@interface PieClass : UIView{
    // ... other things.
}
@property (nonatomic, retain)NSMutableArray *pointsArray;

and don’t forget to synthesize it. Now when you initialize PieClass pass that array to this also

PieClass *myPieClass=[[PieClass alloc]initWithFrame:CGRectMake(8, 297, 200, 300)];
myPieClass.pointsArray = _array;
[self addSubview:myPieClass];

now in your drawRect

- (void)drawRect:(CGRect)rect
{
      //CanvasView *cnava =[[CanvasView alloc]init]; you don't need to do this
      NSLog(@"nextview:%@ ",self.pointsArray);  //passed from previous class

}