规范协议名大写，修复timer问题，项目里只留一份文件便于维护

WCScrollLabelViewDemo/WCScrollLabelViewDemo/Classes/WCScrollLabelView.h

@@ -8,7 +8,7 @@
 
 #import <UIKit/UIKit.h>
 @class WCScrollLabelView;
-@protocol scrollLabelViewDelegate <NSObject>
+@protocol WCScrollLabelViewDelegate <NSObject>
 
 - (void)scrollLabelView:(WCScrollLabelView *)scrollLabelView didClickAtIndex:(NSInteger)index;
 
@@ -18,7 +18,7 @@
 /**
  代理
  */
-@property (nonatomic, weak) id<scrollLabelViewDelegate> delegate;
+@property (nonatomic, weak) id<WCScrollLabelViewDelegate> delegate;
 /**
  标题数组
  */

WCScrollLabelViewDemo/WCScrollLabelViewDemo/Classes/WCScrollLabelView.m

@@ -32,22 +32,36 @@ @interface WCScrollLabelView ()
 @end
 
 @implementation WCScrollLabelView
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        [self setupSubviews];
+    }
+    return self;
+}
+
 - (instancetype)initWithFrame:(CGRect)frame
 {
     self = [super initWithFrame:frame];
     if (self) {
-        _currentIndex = 0;
-        _stayInterval = 2;
-        _animationDuration = 0.5;
-        _contentInsets = UIEdgeInsetsMake(0, 5, 0, 5);
-        [self addSubview:self.container];
-        [self.container addSubview:self.currentLabel];
-        [self.container addSubview:self.willShowLabel];
-        [self setTapGesture];
+        [self setupSubviews];
     }
     return self;
 }
 
+- (void)setupSubviews
+{
+    _currentIndex = 0;
+    _stayInterval = 2;
+    _animationDuration = 0.5;
+    _contentInsets = UIEdgeInsetsMake(0, 5, 0, 5);
+    [self addSubview:self.container];
+    [self.container addSubview:self.currentLabel];
+    [self.container addSubview:self.willShowLabel];
+    [self setTapGesture];
+}
+
 - (void)layoutSubviews{
     [super layoutSubviews];
 
@@ -69,15 +83,24 @@ - (void)layoutSubviews{
 - (void)beginScrolling
 {
     if (self.titleArray.count<2) {
+        if (self.titleArray.count) {
+            self.currentLabel.text = [self.titleArray firstObject];
+        }
         return;
     }
+
+    _currentIndex = 0;
     [self creatTimer];
 }
 - (void)creatTimer
 {
-    _timer = [NSTimer scheduledTimerWithTimeInterval:self.stayInterval target:self selector:@selector(startTimer) userInfo:nil repeats:YES];
-    NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
-    [runLoop addTimer:_timer forMode:NSRunLoopCommonModes];
+    if (nil == _timer) {
+        _timer = [NSTimer scheduledTimerWithTimeInterval:self.stayInterval target:self selector:@selector(startTimer) userInfo:nil repeats:YES];
+        NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
+        [runLoop addTimer:_timer forMode:NSRunLoopCommonModes];
+    }
+
+
 }
 - (void)startTimer
 {
@@ -179,4 +202,12 @@ - (UILabel *)willShowLabel{
     return _willShowLabel;
 }
 
+- (void)dealloc
+{
+    if (_timer) {
+        [_timer invalidate];
+        _timer = nil;
+    }
+}
+
 @end

WCScrollLabelViewDemo/WCScrollLabelViewDemo/ViewController.m

@@ -8,7 +8,7 @@
 
 #import "ViewController.h"
 #import "WCScrollLabelView.h"
-@interface ViewController ()<scrollLabelViewDelegate>
+@interface ViewController ()<WCScrollLabelViewDelegate>
 {
     WCScrollLabelView *scrollLabelView;
 }