//初始化折線圖- (LineChartView *)lineChartView{ if(!_lineChartView){  _lineChartView = [[LineChartView alloc] initWithFrame:CGRectZero];  [_lineChartView setExtraOffsetsWithLeft:15 top:0 right:15 bottom:10];//距離邊緣的間隙  _lineChartView.delegate = self;//設置代理  _lineChartView.backgroundColor = [UIColor whiteColor];  _lineChartView.noDataText = @"暫無此產品的價格趨勢";  _lineChartView.noDataFont = [UIFont systemFontOfSize:15];  _lineChartView.noDataTextColor = HEXCOLOR(0x444444);  _lineChartView.chartDescription.enabled = YES;  _lineChartView.scaleYEnabled = NO;//取消Y軸縮放  _lineChartView.scaleXEnabled = NO;//取消X軸縮放  _lineChartView.doubleTapToZoomEnabled = NO;//取消雙擊縮放  _lineChartView.dragEnabled = YES;//啟用拖拽  _lineChartView.dragDecelerationEnabled = YES;//拖拽后是否有慣性效果  _lineChartView.dragDecelerationFrictionCoef = 0.9;//拖拽后慣性效果的摩擦系數(0~1)，數值越小，慣性越不明顯  //描述及圖例樣式  [_lineChartView setDescriptionText:@""];  _lineChartView.legend.enabled = NO;    //設置左側Y軸  _lineChartView.rightAxis.enabled = YES;//繪制右邊軸  ChartYAxis *leftAxis = _lineChartView.leftAxis;//獲取左邊Y軸  leftAxis.labelCount = 5;//Y軸label數量，數值不一定，如果forceLabelsEnabled等于YES, 則強制繪制制定數量的label, 但是可能不平均  leftAxis.forceLabelsEnabled = NO;//不強制繪制指定數量的labe  leftAxis.axisLineWidth = 0.6;  //設置Y軸線寬  leftAxis.axisLineColor = [UIColor blackColor]; //設置Y軸顏色  // leftAxis.axisMinValue = 0;//設置Y軸的最小值  //leftAxis.axisMaxValue = 105;//設置Y軸的最大值  leftAxis.inverted = NO;//是否將Y軸進行上下翻轉  leftAxis.axisLineColor = [UIColor blackColor];//Y軸顏色  leftAxis.labelPosition = YAxisLabelPositionInsideChart;//label位置  leftAxis.labelTextColor = [UIColor blackColor];//文字顏色  leftAxis.labelFont = [UIFont systemFontOfSize:10.0f];//文字字體  //leftAxis.valueFormatter = [[SymbolsValueFormatter alloc]init];//設置y軸的數據格式  leftAxis.gridLineDashLengths = @[@3.0f, @3.0f];//設置虛線樣式的網格線  leftAxis.gridColor = [UIColor colorWithRed:200/255.0f green:200/255.0f blue:200/255.0f alpha:1];//網格線顏色  leftAxis.gridAntialiasEnabled = YES;//開啟抗鋸齒    //設置Z軸  ChartYAxis *rightAxis = _lineChartView.rightAxis;//獲取右邊Z軸  rightAxis.axisLineWidth = 0.6;  rightAxis.axisLineColor = [UIColor blackColor];//Z軸顏色  rightAxis.drawGridLinesEnabled = NO;  rightAxis.drawLabelsEnabled = NO;    //設置X軸  ChartXAxis *xAxis = _lineChartView.xAxis;  xAxis.valueFormatter = self;   //這里才是最最最最最最關鍵的代碼  xAxis.granularityEnabled = YES;//設置重復的值不顯示  xAxis.labelCount = 5;  xAxis.spaceMin = 0;    //設置坐標軸額外的最小空間  xAxis.forceLabelsEnabled = YES;  xAxis.labelPosition = XAxisLabelPositionBottom;//設置x軸數據在底部  xAxis.labelTextColor = [UIColor blackColor];//文字顏色  xAxis.axisLineWidth = 0.6;  xAxis.axisLineColor = [UIColor blackColor]; //X軸的顏色  xAxis.gridLineDashLengths = @[@3.0f, @3.0f];//設置虛線樣式的網格線  xAxis.gridColor = [UIColor colorWithRed:200/255.0f green:200/255.0f blue:200/255.0f alpha:1];//網格線顏色  xAxis.gridAntialiasEnabled = YES;//開啟抗鋸齒  //_lineChartView.maxVisibleCount = 999;//設置能夠顯示的數據數量    //設置浮層  _lineChartView.drawMarkers = YES;  ChartMarkerView * makerView = [[ChartMarkerView alloc]init];  makerView.offset = CGPointMake(-self.subPriceView.frame.size.width,-self.subPriceView.frame.size.height/2);  makerView.chartView = _lineChartView;  _lineChartView.marker = makerView;  [makerView addSubview:self.subPriceView]; } return _lineChartView;}

//折線圖的數據源- (LineChartData *)getLineData{  if(self.priceTrendDataSource.count == 0) return nil;  //X軸上面需要顯示的數據 NSMutableArray *xVals = [NSMutableArray array];  //對應Y軸上面需要顯示的數據,價格 NSMutableArray *yVals = [NSMutableArray array];  NSInteger index = 0;  for (PriceTrendModel * model in self.priceTrendDataSource) {    [xVals addObject:[NSString stringWithFormat:@"%@",model.trend_X]];    ChartDataEntry *entry_Y = [[ChartDataEntry alloc] initWithX:index y:model.trend_Y];  [yVals addObject:entry_Y];    index ++; } LineChartDataSet *lineSet = [[LineChartDataSet alloc] initWithValues:yVals label:@""]; lineSet.mode = LineChartModeCubicBezier; lineSet.lineWidth = 1.0f; lineSet.drawValuesEnabled = NO; lineSet.valueColors = @[[UIColor purpleColor]]; //折線上的數值的顏色 [lineSet setColor:HEXCOLOR(0x24A5EA)]; //折線本身的顏色 lineSet.drawSteppedEnabled = NO;//是否開啟繪制階梯樣式的折線圖 lineSet.drawCirclesEnabled = NO; lineSet.drawFilledEnabled = NO;//是否填充顏色 lineSet.circleRadius = 1.0f; lineSet.drawCircleHoleEnabled = NO; lineSet.circleHoleRadius = 0.0f; lineSet.circleHoleColor = [UIColor whiteColor];  lineSet.highlightEnabled = YES;//選中拐點,是否開啟高亮效果(顯示十字線) //lineSet.highlightColor = HEXCOLOR(0xc83c23);//點擊選中拐點的十字線的顏色 lineSet.highlightColor = [HEXCOLOR(0x444444) colorWithAlphaComponent:0.5];//點擊選中拐點的十字線的顏色 lineSet.highlightLineWidth = 0.5;//十字線寬度 //lineSet.highlightLineDashLengths = @[@5,@5]; //設置十字線的虛線寬度  lineSet.valueFont = [UIFont systemFontOfSize:12]; lineSet.axisDependency = AxisDependencyLeft;  LineChartData *lineData = [[LineChartData alloc] initWithDataSet:lineSet];  return lineData;}

//初始化餅狀圖- (PieChartView *)pieChartView{ if (!_pieChartView) {  _pieChartView = [[PieChartView alloc] initWithFrame:CGRectZero];    _pieChartView.backgroundColor = [UIColor whiteColor];    //基本樣式  //[_pieChartView setExtraOffsetsWithLeft:30 top:10 right:30 bottom:10];//餅狀圖距離邊緣的間隙    [_pieChartView setExtraOffsetsWithLeft:0 top:0 right:0 bottom:0];//餅狀圖距離邊緣的間隙    _pieChartView.usePercentValuesEnabled = NO;//是否根據所提供的數據, 將顯示數據轉換為百分比格式  _pieChartView.dragDecelerationEnabled = YES;//拖拽餅狀圖后是否有慣性效果  _pieChartView.drawSliceTextEnabled = NO;//是否顯示區塊文本    //空心樣式  _pieChartView.drawHoleEnabled = YES;//餅狀圖是否是空心  _pieChartView.holeRadiusPercent = 0.8;//空心半徑占比  _pieChartView.holeColor = [UIColor clearColor];//空心顏色  _pieChartView.transparentCircleRadiusPercent = 0.52;//半透明空心半徑占比  _pieChartView.transparentCircleColor = [UIColor colorWithRed:210/255.0 green:145/255.0 blue:165/255.0 alpha:0.3];//半透明空心的顏色    //設置空心文字    if (_pieChartView.isDrawHoleEnabled == YES) {   _pieChartView.drawCenterTextEnabled = YES;//是否顯示中間文字   //普通文本   //_pieChartView.centerText = @"資產";//中間文字   //富文本   NSMutableAttributedString *centerText = [[NSMutableAttributedString alloc] initWithString:@"收支詳情"];   [centerText setAttributes:@{NSFontAttributeName: [UIFont boldSystemFontOfSize:18],          NSForegroundColorAttributeName: HEXCOLOR(0x444444)}        range:NSMakeRange(0, centerText.length)];   _pieChartView.centerAttributedText = centerText;  }    //設置餅狀圖描述  _pieChartView.descriptionText = @"";  //_pieChartView.descriptionFont = [UIFont systemFontOfSize:10];  //_pieChartView.descriptionTextColor = [UIColor grayColor];    //設置圖例樣式  _pieChartView.legend.maxSizePercent = 0;//圖例在餅狀圖中的大小占比, 這會影響圖例的寬高  _pieChartView.legend.formToTextSpace = 5;//文本間隔  _pieChartView.legend.yEntrySpace = 12;//10;  _pieChartView.legend.xEntrySpace = 15;  _pieChartView.legend.font = [UIFont systemFontOfSize:10];//字體大小  _pieChartView.legend.textColor = [UIColor grayColor];//字體顏色  _pieChartView.legend.position = ChartLegendPositionBelowChartCenter;//圖例在餅狀圖中的位置  _pieChartView.legend.form = ChartLegendFormCircle;//圖示樣式: 方形、線條、圓形  _pieChartView.legend.formSize = 0;//圖示大小 } return _pieChartView;}

//餅狀圖的數據源- (PieChartData *)getPieData{  //每個區塊的金額數 NSMutableArray * moneyArray = [NSMutableArray arrayWithArray:@[@33.33,@66.66]];  //每個區塊的名稱或描述 //NSArray * xVals = @[@"充值誠意金",@"充值會員費",@"贈送誠意金",@"贈送會員費",@"被凍結資金"];// NSMutableArray * xVals = [NSMutableArray array];  //每個區塊的顏色 NSMutableArray *colors = [[NSMutableArray alloc] init];  switch (_forecastType) {  case ForecastPriceTypeUp:{   [colors addObject:HEXCOLOR(0xFF1F32)];   [moneyArray removeAllObjects];   [moneyArray addObject:@(self.forecastModel.upRate)];   [moneyArray addObject:@(1 - self.forecastModel.upRate)];   break;  }  case ForecastPriceTypeDown:{   [colors addObject:HEXCOLOR(0x5FD954)];   [moneyArray removeAllObjects];   [moneyArray addObject:@(self.forecastModel.downRate)];   [moneyArray addObject:@(1 - self.forecastModel.downRate)];   break;  }  case ForecastPriceTypeLevel:{   [colors addObject:HEXCOLOR(0x00D6F6)];   [moneyArray removeAllObjects];   [moneyArray addObject:@(self.forecastModel.rate)];   [moneyArray addObject:@(1 - self.forecastModel.rate)];   break;  }  default:   break; }  [colors addObject:HEXCOLOR(0xF2F2F2)];  //每個區塊的數據 NSMutableArray *yVals = [[NSMutableArray alloc] init];  for (int i = 0; i < moneyArray.count; i++) {    double randomVal = [moneyArray[i] doubleValue];    //BarChartDataEntry *entry = [[BarChartDataEntry alloc] initWithValue:randomVal xIndex:i];    //ChartDataEntry * entry = [[ChartDataEntry alloc] initWithValue:randomVal xIndex:i];    ChartDataEntry * entry = [[ChartDataEntry alloc] initWithX:i y:randomVal];    [yVals addObject:entry]; }  //dataSet //PieChartDataSet *dataSet = [[PieChartDataSet alloc] initWithYVals:yVals label:@""]; PieChartDataSet *dataSet = [[PieChartDataSet alloc] initWithValues:yVals label:@""]; dataSet.drawValuesEnabled = NO;//是否繪制顯示數據 dataSet.colors = colors;//區塊顏色 dataSet.sliceSpace = 3;//相鄰區塊之間的間距 dataSet.selectionShift = 2;//選中區塊時, 放大的半徑 dataSet.xValuePosition = PieChartValuePositionInsideSlice;//名稱位置 dataSet.yValuePosition = PieChartValuePositionOutsideSlice;//數據位置 //數據與區塊之間的用于指示的折線樣式 dataSet.valueLinePart1OffsetPercentage = 0.85;//折線中第一段起始位置相對于區塊的偏移量, 數值越大, 折線距離區塊越遠 dataSet.valueLinePart1Length = 0.5;//折線中第一段長度占比 dataSet.valueLinePart2Length = 0.4;//折線中第二段長度最大占比 dataSet.valueLineWidth = 1;//折線的粗細 dataSet.valueLineColor = [UIColor brownColor];//折線顏色 dataSet.valueLineVariableLength = YES;  //data //PieChartData *data = [[PieChartData alloc] initWithXVals:xVals dataSet:dataSet]; PieChartData *data = [[PieChartData alloc] initWithDataSet:dataSet]; NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init]; formatter.numberStyle = kCFNumberFormatterDecimalStyle;//NSNumberFormatterPercentStyle; [formatter setPositiveFormat:@"###,##0.00;"]; formatter.maximumFractionDigits = 2;//小數位數 formatter.multiplier = @1.f; formatter.paddingPosition = kCFNumberFormatterPadBeforeSuffix; formatter.positiveSuffix = @"元"; //[data setValueFormatter:formatter];//設置顯示數據格式 [data setValueTextColor:[UIColor brownColor]]; [data setValueFont:[UIFont systemFontOfSize:10]];  return data;}