fix bugs

optimize gradient show

@@ -15,6 +15,8 @@
 - (void)rollBack;
 
 @property (nonatomic) float grade;
+@property (nonatomic) float maxDivisor;
+
 @property (nonatomic) CAShapeLayer *chartLine;
 @property (nonatomic) UIColor *barColor;
 @property (nonatomic) UIColor *barColorGradientStart;

@@ -108,13 +108,14 @@
             
             
             CAGradientLayer *gradientLayer = [CAGradientLayer layer];
-            gradientLayer.startPoint = CGPointMake(0.5,1.0);
-            gradientLayer.endPoint = CGPointMake(0.5,0.0);
+            gradientLayer.startPoint = CGPointMake(0.0,0.0);
+            gradientLayer.endPoint = CGPointMake(1.0 ,0.0);
             gradientLayer.frame = CGRectMake(0, 0, self.bounds.size.width, self.bounds.size.height);
-            UIColor *endColor = (_barColor ? _barColor : [UIColor greenColor]);
+            UIColor *middleColor = [UIColor colorWithWhite:255/255 alpha:0.8];
             NSArray *colors = @[
-                                (id)_barColorGradientStart.CGColor,
-                                (id)endColor.CGColor
+                                (__bridge id)self.barColor.CGColor,
+                                (__bridge id)middleColor.CGColor,
+                                (__bridge id)self.barColor.CGColor
                                 ];
             gradientLayer.colors = colors;
             
@@ -202,7 +203,7 @@
     [_chartLine addSublayer:self.textLayer];
     [self.textLayer setFontSize:textheigt/2];
   
-    [self.textLayer setString:[[NSString alloc]initWithFormat:@"%0.f",grade*100]];
+    [self.textLayer setString:[[NSString alloc]initWithFormat:@"%0.f",grade*self.maxDivisor]];
     [self.textLayer setFrame:CGRectMake(0, textStartPosY, textWidth,  textheigt)];
     self.textLayer.contentsScale = [UIScreen mainScreen].scale;
 
@@ -210,7 +211,7 @@
 
 - (void)setIsNegative:(BOOL)isNegative{
   if (isNegative) {
-    [self.textLayer setString:[[NSString alloc]initWithFormat:@"-%0.f",_grade*100]];
+    [self.textLayer setString:[[NSString alloc]initWithFormat:@"-%0.f",_grade*self.maxDivisor]];
     CABasicAnimation* rotationAnimation;
     rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
     rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI];

@@ -233,7 +233,7 @@
                 bar.barColor = [self barColorAtIndex:index];
             }
             // Add gradient
-            bar.barColorGradientStart = _barColorGradientStart;
+            bar.barColorGradientStart = bar.barColor;
             
             //For Click Index
             bar.tag = index;
@@ -250,8 +250,9 @@
         if (isnan(grade)) {
             grade = 0;
         }
+      bar.maxDivisor = (float)_yValueMax;
         bar.grade = grade;
-       CGRect originalFrame = bar.frame;
+        CGRect originalFrame = bar.frame;
        if (value<0 && self.showLevelLine) {
          CGAffineTransform transform =CGAffineTransformMakeRotation(M_PI);
          [bar setTransform:transform];

@@ -107,14 +107,14 @@
         self.barChart.rotateForXAxisText = true ;
       
         self.barChart.yLabelSum=5;
-        self.barChart.yMaxValue=100;
+        self.barChart.yValueMax=10;
         self.barChart.yLabels = @[@-10,@0,@10];
-        [self.barChart setYValues:@[@1,@24,@(0-12),@18]];
+        [self.barChart setYValues:@[@1,@5,@(0-8),@10]];
   
-        [self.barChart setStrokeColors:@[PNGreen,PNGreen,PNRed,PNGreen,PNGreen,PNYellow,PNGreen]];
+        [self.barChart setStrokeColors:@[PNGreen,PNGreen,PNRed,PNGreen]];
         // Adding gradient
         self.barChart.barColorGradientStart = [UIColor blueColor];
-        
+      
         [self.barChart strokeChart];
         
         self.barChart.delegate = self;