self.LineChartView = [[LineChartView alloc] init];
self.LineChartView.delegate = self;//設(shè)置代理
[self.view addSubview:self.LineChartView];
[self.LineChartView mas_makeConstraints:^(MASConstraintMaker *make) {
 make.size.mas_equalTo(CGSizeMake(self.view.bounds.size.width-20, 300));
 make.center.mas_equalTo(self.view);
}];
self.LineChartView.backgroundColor = [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1];
self.LineChartView.noDataText = @"暫無(wú)數(shù)據(jù)";

self.LineChartView.scaleYEnabled = NO;//取消Y軸縮放
self.LineChartView.doubleTapToZoomEnabled = NO;//取消雙擊縮放
self.LineChartView.dragEnabled = YES;//啟用拖拽圖標(biāo)
self.LineChartView.dragDecelerationEnabled = YES;//拖拽后是否有慣性效果
self.LineChartView.dragDecelerationFrictionCoef = 0.9;//拖拽后慣性效果的摩擦系數(shù)(0~1)，數(shù)值越小，慣性越不明顯

ChartXAxis *xAxis = self.LineChartView.xAxis;
xAxis.axisLineWidth = 1.0/[UIScreen mainScreen].scale;//設(shè)置X軸線寬
xAxis.labelPosition = XAxisLabelPositionBottom;//X軸的顯示位置，默認(rèn)是顯示在上面的
xAxis.drawGridLinesEnabled = NO;//不繪制網(wǎng)格線
xAxis.spaceBetweenLabels = 4;//設(shè)置label間隔
xAxis.labelTextColor = [self colorWithHexString:@"#057748"];//label文字顏色

self.LineChartView.rightAxis.enabled = NO;//不繪制右邊軸
ChartYAxis *leftAxis = self.LineChartView.leftAxis;//獲取左邊Y軸
leftAxis.labelCount = 5;//Y軸label數(shù)量，數(shù)值不一定，如果forceLabelsEnabled等于YES, 則強(qiáng)制繪制制定數(shù)量的label, 但是可能不平均
leftAxis.forceLabelsEnabled = NO;//不強(qiáng)制繪制指定數(shù)量的label
leftAxis.showOnlyMinMaxEnabled = NO;//是否只顯示最大值和最小值
leftAxis.axisMinValue = 0;//設(shè)置Y軸的最小值
leftAxis.startAtZeroEnabled = YES;//從0開(kāi)始繪制
leftAxis.axisMaxValue = 105;//設(shè)置Y軸的最大值
leftAxis.inverted = NO;//是否將Y軸進(jìn)行上下翻轉(zhuǎn)
leftAxis.axisLineWidth = 1.0/[UIScreen mainScreen].scale;//Y軸線寬
leftAxis.axisLineColor = [UIColor blackColor];//Y軸顏色
leftAxis.valueFormatter = [[NSNumberFormatter alloc] init];//自定義格式
leftAxis.valueFormatter.positiveSuffix = @" $";//數(shù)字后綴單位
leftAxis.labelPosition = YAxisLabelPositionOutsideChart;//label位置
leftAxis.labelTextColor = [self colorWithHexString:@"#057748"];//文字顏色
leftAxis.labelFont = [UIFont systemFontOfSize:10.0f];//文字字體

leftAxis.gridLineDashLengths = @[@3.0f, @3.0f];//設(shè)置虛線樣式的網(wǎng)格線
leftAxis.gridColor = [UIColor colorWithRed:200/255.0f green:200/255.0f blue:200/255.0f alpha:1];//網(wǎng)格線顏色
leftAxis.gridAntialiasEnabled = YES;//開(kāi)啟抗鋸齒

ChartLimitLine *limitLine = [[ChartLimitLine alloc] initWithLimit:80 label:@"限制線"];
limitLine.lineWidth = 2;
limitLine.lineColor = [UIColor greenColor];
limitLine.lineDashLengths = @[@5.0f, @5.0f];//虛線樣式
limitLine.labelPosition = ChartLimitLabelPositionRightTop;//位置
limitLine.valueTextColor = [self colorWithHexString:@"#057748"];//label文字顏色
limitLine.valueFont = [UIFont systemFontOfSize:12];//label字體
[leftAxis addLimitLine:limitLine];//添加到Y(jié)軸上
leftAxis.drawLimitLinesBehindDataEnabled = YES;//設(shè)置限制線繪制在折線圖的后面

[self.LineChartView setDescriptionText:@"折線圖"];//折線圖描述
[self.LineChartView setDescriptionTextColor:[UIColor darkGrayColor]];
self.LineChartView.legend.form = ChartLegendFormLine;//圖例的樣式
self.LineChartView.legend.formSize = 30;//圖例中線條的長(zhǎng)度
self.LineChartView.legend.textColor = [UIColor darkGrayColor];//圖例文字顏色

- (LineChartData *)setData{
 int xVals_count = 12;//X軸上要顯示多少條數(shù)據(jù)
 double maxYVal = 100;//Y軸的最大值
 //X軸上面需要顯示的數(shù)據(jù)
 NSMutableArray *xVals = [[NSMutableArray alloc] init];
 for (int i = 0; i < xVals_count; i++) {
 [xVals addObject:[NSString stringWithFormat:@"%d月", i+1]];
 }
 //對(duì)應(yīng)Y軸上面需要顯示的數(shù)據(jù)
 NSMutableArray *yVals = [[NSMutableArray alloc] init];
 for (int i = 0; i < xVals_count; i++) {
 double mult = maxYVal + 1;
 double val = (double)(arc4random_uniform(mult));
 ChartDataEntry *entry = [[ChartDataEntry alloc] initWithValue:val xIndex:i];
 [yVals addObject:entry];
 }
 LineChartDataSet *set1 = nil;
 if (self.LineChartView.data.dataSetCount > 0) {
 LineChartData *data = (LineChartData *)self.LineChartView.data;
 set1 = (LineChartDataSet *)data.dataSets[0];
 set1.yVals = yVals;
 return data;
 }else{
 //創(chuàng)建LineChartDataSet對(duì)象
 set1 = [[LineChartDataSet alloc] initWithYVals:yVals label:@"lineName"];
 //設(shè)置折線的樣式
 set1.lineWidth = 1.0/[UIScreen mainScreen].scale;//折線寬度
 set1.drawValuesEnabled = YES;//是否在拐點(diǎn)處顯示數(shù)據(jù)
 set1.valueColors = @[[UIColor brownColor]];//折線拐點(diǎn)處顯示數(shù)據(jù)的顏色
 [set1 setColor:[self colorWithHexString:@"#007FFF"]];//折線顏色
 set1.drawSteppedEnabled = NO;//是否開(kāi)啟繪制階梯樣式的折線圖
 //折線拐點(diǎn)樣式
 set1.drawCirclesEnabled = NO;//是否繪制拐點(diǎn)
 set1.circleRadius = 4.0f;//拐點(diǎn)半徑
 set1.circleColors = @[[UIColor redColor], [UIColor greenColor]];//拐點(diǎn)顏色
 //拐點(diǎn)中間的空心樣式
 set1.drawCircleHoleEnabled = YES;//是否繪制中間的空心
 set1.circleHoleRadius = 2.0f;//空心的半徑
 set1.circleHoleColor = [UIColor blackColor];//空心的顏色
 //折線的顏色填充樣式
 //第一種填充樣式:單色填充
// set1.drawFilledEnabled = YES;//是否填充顏色
// set1.fillColor = [UIColor redColor];//填充顏色
// set1.fillAlpha = 0.3;//填充顏色的透明度
 //第二種填充樣式:漸變填充
 set1.drawFilledEnabled = YES;//是否填充顏色
 NSArray *gradientColors = @[(id)[ChartColorTemplates colorFromString:@"#FFFFFFFF"].CGColor,
   (id)[ChartColorTemplates colorFromString:@"#FF007FFF"].CGColor];
 CGGradientRef gradientRef = CGGradientCreateWithColors(nil, (CFArrayRef)gradientColors, nil);
 set1.fillAlpha = 0.3f;//透明度
 set1.fill = [ChartFill fillWithLinearGradient:gradientRef angle:90.0f];//賦值填充顏色對(duì)象
 CGGradientRelease(gradientRef);//釋放gradientRef
 //點(diǎn)擊選中拐點(diǎn)的交互樣式
 set1.highlightEnabled = YES;//選中拐點(diǎn),是否開(kāi)啟高亮效果(顯示十字線)
 set1.highlightColor = [self colorWithHexString:@"#c83c23"];//點(diǎn)擊選中拐點(diǎn)的十字線的顏色
 set1.highlightLineWidth = 1.0/[UIScreen mainScreen].scale;//十字線寬度
 set1.highlightLineDashLengths = @[@5, @5];//十字線的虛線樣式
 //將 LineChartDataSet 對(duì)象放入數(shù)組中
 NSMutableArray *dataSets = [[NSMutableArray alloc] init];
 [dataSets addObject:set1];
 //添加第二個(gè)LineChartDataSet對(duì)象
// LineChartDataSet *set2 = [set1 copy];
// NSMutableArray *yVals2 = [[NSMutableArray alloc] init];
// for (int i = 0; i < xVals_count; i++) {
// double mult = maxYVal + 1;
// double val = (double)(arc4random_uniform(mult));
// ChartDataEntry *entry = [[ChartDataEntry alloc] initWithValue:val xIndex:i];
// [yVals2 addObject:entry];
// }
// set2.yVals = yVals2;
// [set2 setColor:[UIColor redColor]];
// set2.drawFilledEnabled = YES;//是否填充顏色
// set2.fillColor = [UIColor redColor];//填充顏色
// set2.fillAlpha = 0.1;//填充顏色的透明度
// [dataSets addObject:set2];
 //創(chuàng)建 LineChartData 對(duì)象, 此對(duì)象就是lineChartView需要最終數(shù)據(jù)對(duì)象
 LineChartData *data = [[LineChartData alloc] initWithXVals:xVals dataSets:dataSets];
 [data setValueFont:[UIFont fontWithName:@"HelveticaNeue-Light" size:8.f]];//文字字體
 [data setValueTextColor:[UIColor grayColor]];//文字顏色
 NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
 //自定義數(shù)據(jù)顯示格式
 [formatter setNumberStyle:NSNumberFormatterDecimalStyle];
 [formatter setPositiveFormat:@"#0.0"];
 [data setValueFormatter:formatter];
 return data;
 }
}