Optimize samples details

sample/src/main/java/com/github/aachartmodel/aainfographics/demo/basiccontent/SpecialChartActivity.kt

@@ -68,8 +68,6 @@ class SpecialChartActivity : AppCompatActivity() {
             AAChartType.Pyramid.value -> return SpecialChartComposer.configurePyramidChart()
             AAChartType.Funnel.value -> return SpecialChartComposer.configureFunnelChart()
             AAChartType.Errorbar.value -> return SpecialChartComposer.configureErrorbarChart()
-            else -> {
-            }
         }
 
         return null

sample/src/main/java/com/github/aachartmodel/aainfographics/demo/chartcomposer/ChartOptionsComposer.kt

@@ -1002,9 +1002,10 @@ function () {
                     .color(AAColor.Red)
                     .value(0.1523f)
                     .width(1.5f)
+                    .dashStyle(AAChartLineDashStyleType.LongDashDotDot)
                     .label(AALabel()
                         .text("实际价格")
-                        .style(AAChartLineDashStyleType.ShortDashDotDot) //.rotation(90)
+                        .rotation(90)
                     )))
         val yAxis1 = AAYAxis()
             .visible(true)

sample/src/main/java/com/github/aachartmodel/aainfographics/demo/chartcomposer/CustomStyleChartComposer.kt

@@ -922,7 +922,8 @@ object CustomStyleChartComposer  {
             .markerSymbol(AAChartSymbolType.Circle)
             .markerRadius(8.0f)
             .markerSymbolStyle(AAChartSymbolStyleType.InnerBlank)
-            .series(arrayOf(AASeriesElement()
+            .series(arrayOf(
+                AASeriesElement()
                 .name("2017")
                 .step(true)
                 .dataLabels(AADataLabels()