Add view to subView

Question

I implemented core plot in xcode . I'm trying to insert the legend in another cell . Here is my code of how I implemented the legend .

- (void)configureLegend
{
    CPTGraph *graph = self.hostView.hostedGraph;
    CPTLegend *theLegend = [CPTLegend legendWithGraph:graph];

    // Configure the legend
    theLegend.numberOfColumns = 1;
    theLegend.fill = [CPTFill fillWithColor:[CPTColor whiteColor]];
    theLegend.borderLineStyle = [CPTLineStyle lineStyle];
    theLegend.cornerRadius = 5.0;

    // Add legend to graph
    graph.legend = theLegend;
    graph.legendAnchor = CPTRectAnchorRight;
    CGFloat legendPadding = - (self.chartView.bounds.size.width / 8);
    graph.legendDisplacement = CGPointMake(legendPadding, 0.0);

Here is what I tried:

    UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:2 inSection:0]];
    [cell addSubview:theLegend];
}

I get the following error:

Incompatible pointer types sending 'CPTGraph *' to parameter of type 'UIView *'

I understand the error, and what I did wrong. My question is, how can I add the legend as a subview of a cell?

Edit

Here is what I'm talking about:

I want to move the part that has all the info - "AAPL" GOOG" "MSFT" (the thing on the right), to another cell.

Answer 1

As the error message suggests, you're trying to add an object that isn't of type UIView as a subview to the cell. Add the CTPGraph object to an instance of type CPTGraphHostingView , then add this as a subview to the cell:

CPTGraphHostingView *hostingView = [[CPTGraphHostingView alloc] initWithFrame:frame];
hostingView.hostedGraph = graph;

[cell addSubview:hostingView];

Furthermore, you shouldn't really be accessing cells like that. You should be adding the graph as a subview from UITableView's delegate method, tableView:cellForRowAtIndexPath: . Use this method to retrieve the legend and add it to the cell before returning the completed cell.

Updated - You're using a static UITableView, so the implementation of cellForRowAtIndexPath: differs slightly. You have to retrieve the cell from super (the Table View) instead of dequeuing a reusable cell:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [super tableView:tableView cellForRowAtIndexPath:indexPath];

    ...retrieve instance of graph...

    CPTGraphHostingView *hostingView = [[CPTGraphHostingView alloc] initWithFrame:frame];
    hostingView.hostedGraph = graph;

    [cell addSubview:hostingView];

    return cell;
}

Update 2 - To add only the legend to the cell:

[cell.layer addSublayer:graph.legend];

Update 3 - Your text could be upside down because the coordinate system used by the legend's layer may be different. You can fix this by rotating the layer 180 degrees using a transform:

legendLayer.transform = CATransform3DMakeRotation(M_PI / 180.0f, 0, 1, 0);

Answer 2

use

CPTGraphHostingView

to place inside UIView,

Answer 3

Because CPTGraph * isn't a subclass of UIView * . You need to add the CPTGraphHostingView *hostingView to your view by doing [cell addSubview:graph.hostingView] ;