加了少许功能，可以满足更多需求 ：）

README.md

@@ -5,6 +5,26 @@ TQStarRatingView
 
 IOS 星星评分视图控件，点击和滑动评分。
 
+### 我增加了什么功能
+
+- delegate 可以用于设置星星范围控制
+
+    ```
+    - (BOOL)starRatingView:(TQStarRatingView *)view shouldShowScore:(float)score;
+    ```
+- 属性fillType，用于控制星星显示粒度
+
+    ```
+    /**
+     填充粒度
+     */
+    typedef enum : NSUInteger {
+        StartFillTypeAll,   //自由填充 粒度是0.01
+        StartFillTypeHalf,  //半颗星
+        StartFillTypeFull,  //一颗星
+    } StartFillType;
+```
+
 #### 控件效果
 
 ![Image text](http://github.com/TinyQ/TQStarRatingView/raw/master/READMEIMAGE/TQStarRatingView.gif)

TQStarRatingView/TQStarRating/TQStarRatingView.h

@@ -13,15 +13,29 @@
 @protocol StarRatingViewDelegate <NSObject>
 
 @optional
--(void)starRatingView:(TQStarRatingView *)view score:(float)score;
+
+- (void)starRatingView:(TQStarRatingView *)view score:(float)score;
+
+//可以用于设置星星范围控制
+- (BOOL)starRatingView:(TQStarRatingView *)view shouldShowScore:(float)score;
 
 @end
 
-@interface TQStarRatingView : UIView
+/**
+ 填充粒度
+ */
+typedef enum : NSUInteger {
+    StartFillTypeAll,   //自由填充 粒度是0.1
+    StartFillTypeHalf,  //半颗星
+    StartFillTypeFull,  //一颗星
+} StartFillType;
 
-@property (nonatomic, readonly) int numberOfStar;
+@interface TQStarRatingView : UIView
 
 @property (nonatomic, weak) id <StarRatingViewDelegate> delegate;
+@property (nonatomic, readonly) int numberOfStar;
+//设置星星填充的最小粒度 默认是StartFillTypeAll
+@property (nonatomic, assign) StartFillType fillType;
 
 /**
  *  初始化TQStarRatingView
@@ -54,4 +68,4 @@
 
 #define kBACKGROUND_STAR @"backgroundStar"
 #define kFOREGROUND_STAR @"foregroundStar"
-#define kNUMBER_OF_STAR  5
+#define kNUMBER_OF_STAR  5

TQStarRatingView/TQStarRating/TQStarRatingView.m

@@ -48,8 +48,9 @@ - (id)initWithFrame:(CGRect)frame numberOfStar:(int)number
     return self;
 }
 
-- (void)commonInit
-{
+- (void)commonInit{
+    self.fillType = StartFillTypeAll;
+
     self.starBackgroundView = [self buidlStarViewWithImageName:kBACKGROUND_STAR];
     self.starForegroundView = [self buidlStarViewWithImageName:kFOREGROUND_STAR];
     [self addSubview:self.starBackgroundView];
@@ -187,7 +188,40 @@ - (void)changeStarForegroundViewWithPoint:(CGPoint)point
     }
 
     NSString * str = [NSString stringWithFormat:@"%0.2f",p.x / self.frame.size.width];
-    float score = [str floatValue];
+    CGFloat score = [str floatValue];
+
+    if (self.fillType == StartFillTypeFull) {
+        //which star is touch on
+        NSUInteger part = (1.0 / _numberOfStar) * 100;
+        NSUInteger present = score * 100;
+        NSUInteger index = present / part;
+        if (present % part != 0) {
+            index++;
+        }
+        score = index * part / 100.f;
+    }else if (self.fillType == StartFillTypeHalf){
+        NSUInteger part = (1.0 / _numberOfStar) * 100;
+        NSUInteger present = score * 100;
+        NSUInteger index = present / part;
+        NSUInteger gws = 0;
+        if (present % part != 0) {
+            int tmp = present*1.f / part*1.f * 10;
+            gws = tmp % 10;
+        }
+        if (gws >= 5) {
+            score = (index+1.0) * part / 100.f;
+        }else{
+            score = (index+0.5) * part / 100.f;
+        }
+    }
+
+    BOOL shouldShow = YES;
+    if ([self.delegate respondsToSelector:@selector(starRatingView:shouldShowScore:)]) {
+        shouldShow = [self.delegate starRatingView:self shouldShowScore:score];
+    }
+    if (!shouldShow)  return ;
+
+
     p.x = score * self.frame.size.width;
     self.starForegroundView.frame = CGRectMake(0, 0, p.x, self.frame.size.height);
 

TQStarRatingView/TQStarRatingView.xcodeproj/project.pbxproj

@@ -19,9 +19,7 @@
 		58F0AEF517CDD614009FE3CB /* TQViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 58F0AEF417CDD614009FE3CB /* TQViewController.m */; };
 		58F0AEF817CDD614009FE3CB /* TQViewController.xib in Resources */ = {isa = PBXBuildFile; fileRef = 58F0AEF617CDD614009FE3CB /* TQViewController.xib */; };
 		58F0AF0117CDD6A3009FE3CB /* TQStarRatingView.m in Sources */ = {isa = PBXBuildFile; fileRef = 58F0AF0017CDD6A3009FE3CB /* TQStarRatingView.m */; };
-		58F0AF0717CDDA9D009FE3CB /* backgroundStar.png in Resources */ = {isa = PBXBuildFile; fileRef = 58F0AF0317CDDA9D009FE3CB /* backgroundStar.png */; };
 		58F0AF0817CDDA9D009FE3CB /* backgroundStar@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 58F0AF0417CDDA9D009FE3CB /* backgroundStar@2x.png */; };
-		58F0AF0917CDDA9D009FE3CB /* foregroundStar.png in Resources */ = {isa = PBXBuildFile; fileRef = 58F0AF0517CDDA9D009FE3CB /* foregroundStar.png */; };
 		58F0AF0A17CDDA9D009FE3CB /* foregroundStar@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 58F0AF0617CDDA9D009FE3CB /* foregroundStar@2x.png */; };
 /* End PBXBuildFile section */
 
@@ -44,9 +42,7 @@
 		58F0AEF717CDD614009FE3CB /* en */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = en; path = en.lproj/TQViewController.xib; sourceTree = "<group>"; };
 		58F0AEFF17CDD6A3009FE3CB /* TQStarRatingView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TQStarRatingView.h; sourceTree = "<group>"; };
 		58F0AF0017CDD6A3009FE3CB /* TQStarRatingView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = TQStarRatingView.m; sourceTree = "<group>"; };
-		58F0AF0317CDDA9D009FE3CB /* backgroundStar.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = backgroundStar.png; sourceTree = "<group>"; };
 		58F0AF0417CDDA9D009FE3CB /* backgroundStar@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "backgroundStar@2x.png"; sourceTree = "<group>"; };
-		58F0AF0517CDDA9D009FE3CB /* foregroundStar.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = foregroundStar.png; sourceTree = "<group>"; };
 		58F0AF0617CDDA9D009FE3CB /* foregroundStar@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "foregroundStar@2x.png"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -132,9 +128,7 @@
 		58F0AF0217CDDA9D009FE3CB /* Image */ = {
 			isa = PBXGroup;
 			children = (
-				58F0AF0317CDDA9D009FE3CB /* backgroundStar.png */,
 				58F0AF0417CDDA9D009FE3CB /* backgroundStar@2x.png */,
-				58F0AF0517CDDA9D009FE3CB /* foregroundStar.png */,
 				58F0AF0617CDDA9D009FE3CB /* foregroundStar@2x.png */,
 			);
 			path = Image;
@@ -197,9 +191,7 @@
 				58F0AEF017CDD614009FE3CB /* Default@2x.png in Resources */,
 				58F0AEF217CDD614009FE3CB /* Default-568h@2x.png in Resources */,
 				58F0AEF817CDD614009FE3CB /* TQViewController.xib in Resources */,
-				58F0AF0717CDDA9D009FE3CB /* backgroundStar.png in Resources */,
 				58F0AF0817CDDA9D009FE3CB /* backgroundStar@2x.png in Resources */,
-				58F0AF0917CDDA9D009FE3CB /* foregroundStar.png in Resources */,
 				58F0AF0A17CDDA9D009FE3CB /* foregroundStar@2x.png in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -337,6 +329,7 @@
 				58F0AEFD17CDD614009FE3CB /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

TQStarRatingView/TQStarRatingView/TQViewController.m

@@ -25,6 +25,7 @@ - (void)viewDidLoad
     _starRatingView.delegate = self;
     [self.view addSubview:_starRatingView];
 
+    _starRatingView.fillType = StartFillTypeHalf;
 }
 
 -(void)starRatingView:(TQStarRatingView *)view score:(float)score
@@ -34,6 +35,14 @@ -(void)starRatingView:(TQStarRatingView *)view score:(float)score
     [self.nibStarRatingView setScore:score withAnimation:YES];
 }
 
+
+- (BOOL)starRatingView:(TQStarRatingView *)view shouldShowScore:(float)score{
+    if (score <= 0.f) {
+        return NO;
+    }
+    return YES;
+}
+
 - (IBAction)scoreButtonTouchUpInside:(id)sender
 {
     //设置分数。参数需要在0-1之间。