Question

我一直在探索Core Plot版本1.5.1提供的Plot_Gallery-iOS项目，特别是RealTimePlot示例。我在模拟器中测试了应用程序，包括iPhone和iPad，以及这些模拟器的64位版本。然后我在iPhone上运行项目，一切都按预期进行。当我在iPad Air上运行项目时出现问题。实时绘图的第一部分工作正常，但是，绘图的范围不会更新。但是，数据正在更新，因为点被移动，直到轴保持为空。我为项目添加了一个异常断点，它在NSParameterAssert(range)的方法setXRange:中的CPTXYPlotSpace.m停止：

-(void)setXRange:(CPTPlotRange *)range
{
    NSParameterAssert(range);

    if ( ![range isEqualToRange:xRange] ) {
        CPTPlotRange *constrainedRange;

        if ( self.allowsMomentumX ) {
            constrainedRange = range;
        }
        else {
            constrainedRange = [self constrainRange:range toGlobalRange:self.globalXRange];
        }

        id<CPTPlotSpaceDelegate> theDelegate = self.delegate;
        if ( [theDelegate respondsToSelector:@selector(plotSpace:willChangePlotRangeTo:forCoordinate:)] ) {
            constrainedRange = [theDelegate plotSpace:self willChangePlotRangeTo:constrainedRange forCoordinate:CPTCoordinateX];
        }

        if ( ![constrainedRange isEqualToRange:xRange] ) {
            [xRange release];
            xRange = [constrainedRange copy];

            [[NSNotificationCenter defaultCenter] postNotificationName:CPTPlotSpaceCoordinateMappingDidChangeNotification
                                                                object:self];

            if ( [theDelegate respondsToSelector:@selector(plotSpace:didChangePlotRangeForCoordinate:)] ) {
                [theDelegate plotSpace:self didChangePlotRangeForCoordinate:CPTCoordinateX];
            }

            CPTGraph *theGraph = self.graph;
            if ( theGraph ) {
                [[NSNotificationCenter defaultCenter] postNotificationName:CPTGraphNeedsRedrawNotification
                                                                    object:theGraph];
            }
        }
    }
}

部署目标是7.1，其他项目配置是项目附带的配置。关于为什么会发生这种情况的任何线索？

更新这是异常之前的堆栈跟踪：

2014-03-21 15:11:48.794 Plot Gallery[209:60b] Stack trace : (
    0   Plot Gallery                        0x0000000100150094 -[CPTXYPlotSpace setXRange:] + 56
    1   Plot Gallery                        0x00000001001a705c -[CPTAnimation update:] + 3040
    2   Foundation                          0x000000018a2c15c4 __NSFireTimer + 92
    3   CoreFoundation                      0x00000001896fef54 <redacted> + 28
    4   CoreFoundation                      0x00000001896febc4 <redacted> + 804
    5   CoreFoundation                      0x00000001896fc8ec <redacted> + 1324
    6   CoreFoundation                      0x000000018963d6d0 CFRunLoopRunSpecific + 452
    7   GraphicsServices                    0x000000018f2c9c0c GSEventRunModal + 168
    8   UIKit                               0x000000018c76efdc UIApplicationMain + 1156
    9   Plot Gallery                        0x00000001000def54 main + 56
    10  libdyld.dylib                       0x00000001965e7aa0 <redacted> + 4
)
2014-03-21 15:12:02.358 Plot Gallery[209:60b] *** Assertion failure in -[CPTXYPlotSpace setXRange:], /Users/myUser/Developer/iOS/core_plot/framework/Source/CPTXYPlotSpace.m:378

Answer 1

1.5.1发布后修复了这个问题。从Github签出最新代码或等待下一个版本。

Plot_Gallery_iOS中的实时绘图不会更新iPad中的绘图范围

1 个答案: