__TVOS_PROHIBITED @protocol UIWebViewDelegate <NSObject>

@optional
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
- (void)webViewDidStartLoad:(UIWebView *)webView;
- (void)webViewDidFinishLoad:(UIWebView *)webView;
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error;

@end

- (void)sendData:(id)data responseCallback:(WVJBResponseCallback)responseCallback handlerName:(NSString*)handlerName {
    NSMutableDictionary* message = [NSMutableDictionary dictionary];
    
    if (data) {
        message[@"data"] = data;
    }
    
    if (responseCallback) {
        NSString* callbackId = [NSString stringWithFormat:@"objc_cb_%ld", ++_uniqueId];
        self.responseCallbacks[callbackId] = [responseCallback copy];
        message[@"callbackId"] = callbackId;
    }
    
    if (handlerName) {
        message[@"handlerName"] = handlerName;
    }
    [self _queueMessage:message];
}

//命令拼接
- (void)_dispatchMessage:(WVJBMessage*)message {
    NSString *messageJSON = [self _serializeMessage:message pretty:NO];
    [self _log:@"SEND" json:messageJSON];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\\" withString:@"\\\\"];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\'" withString:@"\\\'"];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\n" withString:@"\\n"];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\r" withString:@"\\r"];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\f" withString:@"\\f"];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\u2028" withString:@"\\u2028"];
    messageJSON = [messageJSON stringByReplacingOccurrencesOfString:@"\u2029" withString:@"\\u2029"];
    
    NSString* javascriptCommand = [NSString stringWithFormat:@"WebViewJavascriptBridge._handleMessageFromObjC('%@');", messageJSON];
    if ([[NSThread currentThread] isMainThread]) {
        [self _evaluateJavascript:javascriptCommand];

    } else {
        dispatch_sync(dispatch_get_main_queue(), ^{
            [self _evaluateJavascript:javascriptCommand];
        });
    }
}

//命令执行
- (NSString*) _evaluateJavascript:(NSString*)javascriptCommand
{
    return [_webView stringByEvaluatingJavaScriptFromString:javascriptCommand];
}

//Native js bridge方法管理（给js用的）
- (void)registerHandler:(NSString *)handlerName handler:(WVJBHandler)handler {
    _base.messageHandlers[handlerName] = [handler copy];
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    
    // core code {
    NSURL *url = [request URL];
    __strong WVJB_WEBVIEW_DELEGATE_TYPE* strongDelegate = _webViewDelegate;
    if ([_base isCorrectProcotocolScheme:url]) {
        if ([_base isQueueMessageURL:url]) {
            // 获取JS的messageQueue
            NSString *messageQueueString = [self _evaluateJavascript:[_base webViewJavascriptFetchQueyCommand]];
            [_base flushMessageQueue:messageQueueString];
        }
        return NO;
    }
    // core code }
  
}

-(NSString *)webViewJavascriptFetchQueyCommand {
    return @"WebViewJavascriptBridge._fetchQueue();";
}

- (void)flushMessageQueue:(NSString *)messageQueueString{
    if (messageQueueString == nil || messageQueueString.length == 0) {
        NSLog(@"WebViewJavascriptBridge: WARNING: ObjC got nil while fetching the message queue JSON from webview. This can happen if the WebViewJavascriptBridge JS is not currently present in the webview, e.g if the webview just loaded a new page.");
        return;
    }

    // 拿到消息，按照消息handler
    id messages = [self _deserializeMessageJSON:messageQueueString];
    for (WVJBMessage* message in messages) {
        if (![message isKindOfClass:[WVJBMessage class]]) {
            NSLog(@"WebViewJavascriptBridge: WARNING: Invalid %@ received: %@", [message class], message);
            continue;
        }
        [self _log:@"RCVD" json:message];
        
        NSString* responseId = message[@"responseId"];
        if (responseId) { // 如果是应答消息则执行并结束
            WVJBResponseCallback responseCallback = _responseCallbacks[responseId];
            responseCallback(message[@"responseData"]);
            [self.responseCallbacks removeObjectForKey:responseId];
        } else { // 如果是普通调用消息，则根据是否需要对其应答做相应处理
            WVJBResponseCallback responseCallback = NULL;
            NSString* callbackId = message[@"callbackId"];
            if (callbackId) {
                responseCallback = ^(id responseData) {
                    if (responseData == nil) {
                        responseData = [NSNull null];
                    }
                    
                    WVJBMessage* msg = @{ @"responseId":callbackId, @"responseData":responseData };
                    [self _queueMessage:msg];
                };
            } else {
                responseCallback = ^(id ignoreResponseData) {
                    // Do nothing
                };
            }
            
            // 在messageHandlers里面查找handler
            WVJBHandler handler = self.messageHandlers[message[@"handlerName"]];
            
            if (!handler) {
                NSLog(@"WVJBNoHandlerException, No handler for message from JS: %@", message);
                continue;
            }
            // 执行handler
            handler(message[@"data"], responseCallback);
        }
    }
}

- (NSString *)aLongAddress
{
    return @"A long long long long long long long long long address";
}

- (NSString *)aShortAddress
{
    return @"A short address";
}

- (void)sampleCode
{
    UIView *layoutView = [UIView new];
    layoutView.frame = CGRectMake(0, 200, [UIScreen mainScreen].bounds.size.width, 100);
    layoutView.backgroundColor = [[UIColor alloc] initWithRed:0.5 green:0.5 blue:0.5 alpha:0.5];
    [self.view addSubview:layoutView];
    
    UILabel *address = [[UILabel alloc] init];
    [layoutView addSubview:address];
    address.text = @"地址:";
    address.backgroundColor = [UIColor blueColor];
    [address mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerY.equalTo(layoutView);
        make.left.equalTo(layoutView).offset(10);
    }];
    
    UITextField *addressTextField = [[UITextField alloc] init];
    [layoutView addSubview:addressTextField];
    addressTextField.returnKeyType = UIReturnKeyDone;
    addressTextField.font = [UIFont systemFontOfSize:15];
    addressTextField.clearButtonMode = UITextFieldViewModeWhileEditing;
    addressTextField.layer.borderWidth = 1 / [UIScreen mainScreen].scale;
    addressTextField.layer.borderColor =  [[[UIColor alloc] initWithRed:1 green:1 blue:0 alpha:1] CGColor];
    addressTextField.layer.cornerRadius = 3;
    addressTextField.text = [self aLongAddress];
    [addressTextField mas_makeConstraints:^(MASConstraintMaker *make) {
        make.height.equalTo(address);
        make.centerY.equalTo(address);
        make.right.equalTo(layoutView.mas_right).offset(-10);
        make.left.equalTo(address.mas_right).offset(10);
    }];
}

- (UILayoutPriority)contentHuggingPriorityForAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);
- (void)setContentHuggingPriority:(UILayoutPriority)priority forAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);

- (UILayoutPriority)contentCompressionResistancePriorityForAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);
- (void)setContentCompressionResistancePriority:(UILayoutPriority)priority forAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);

NS_CLASS_AVAILABLE_IOS(6_0)
@interface NSLayoutConstraint : NSObject

// other code

@property UILayoutPriority priority;
@property BOOL shouldBeArchived;

/* accessors
 firstItem.firstAttribute {==,<=,>=} secondItem.secondAttribute * multiplier + constant
 */
@property (readonly, assign) id firstItem;
@property (readonly) NSLayoutAttribute firstAttribute;
@property (readonly) NSLayoutRelation relation;
@property (nullable, readonly, assign) id secondItem;
@property (readonly) NSLayoutAttribute secondAttribute;
@property (readonly) CGFloat multiplier;

/* Unlike the other properties, the constant may be modified after constraint creation.  Setting the constant on an existing constraint performs much better than removing the constraint and adding a new one that's just like the old but for having a new constant.
 */
@property CGFloat constant;

/* The receiver may be activated or deactivated by manipulating this property.  Only active constraints affect the calculated layout.  Attempting to activate a constraint whose items have no common ancestor will cause an exception to be thrown.  Defaults to NO for newly created constraints. */
@property (getter=isActive) BOOL active NS_AVAILABLE(10_10, 8_0);

// other code

@end

- (void)install {

    // other code
    
    MASLayoutConstraint *existingConstraint = nil;
    if (self.updateExisting) { //如果是update，则去匹配对应的existingConstraint
        existingConstraint = [self layoutConstraintSimilarTo:layoutConstraint];
    }
    if (existingConstraint) { //找到了existingConstraint，最终也只更新了existingConstraint.constant
        // just update the constant
        existingConstraint.constant = layoutConstraint.constant;
        self.layoutConstraint = existingConstraint;
    } else { //没有找到existingConstraint，添加一个新的约束
        [self.installedView addConstraint:layoutConstraint];
        self.layoutConstraint = layoutConstraint;
        [firstLayoutItem.mas_installedConstraints addObject:self];
    }
}

// 除了constant，其它都一样的约束是Similar约束
- (MASLayoutConstraint *)layoutConstraintSimilarTo:(MASLayoutConstraint *)layoutConstraint {
    // check if any constraints are the same apart from the only mutable property constant

    // go through constraints in reverse as we do not want to match auto-resizing or interface builder constraints
    // and they are likely to be added first.
    for (NSLayoutConstraint *existingConstraint in self.installedView.constraints.reverseObjectEnumerator) {
        if (![existingConstraint isKindOfClass:MASLayoutConstraint.class]) continue;
        if (existingConstraint.firstItem != layoutConstraint.firstItem) continue;
        if (existingConstraint.secondItem != layoutConstraint.secondItem) continue;
        if (existingConstraint.firstAttribute != layoutConstraint.firstAttribute) continue;
        if (existingConstraint.secondAttribute != layoutConstraint.secondAttribute) continue;
        if (existingConstraint.relation != layoutConstraint.relation) continue;
        if (existingConstraint.multiplier != layoutConstraint.multiplier) continue;
        if (existingConstraint.priority != layoutConstraint.priority) continue;

        return (id)existingConstraint;
    }
    return nil;
}

@interface ViewController ()

@property (nonatomic, strong) UILabel *lbl;
@property (nonatomic, strong) UIButton *btn;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    self.btn = [UIButton buttonWithType:UIButtonTypeCustom];
    self.btn.backgroundColor = [UIColor blueColor];
    [self.btn setTitle:@"按钮" forState:UIControlStateNormal];
    [self.btn addTarget:self action:@selector(onTest:) forControlEvents:UIControlEventTouchDown];
    [self.view addSubview:self.btn];
    [self.btn mas_updateConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(200);
        make.centerX.equalTo(self.view);
        make.size.mas_equalTo(CGSizeMake(100, 33));
    }];
    
    self.lbl = [[UILabel alloc] init];
    self.lbl.text = @"一个label";
    self.lbl.backgroundColor = [UIColor redColor];
    self.lbl.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:self.lbl];
    [self.lbl mas_updateConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(300);
        make.centerX.equalTo(self.view);
        make.size.equalTo(self.btn);
    }];
}

- (void)onTest:(id)sender
{
    [self.lbl mas_updateConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(200, 100));
    }];
}

@end

- (void)sampleCode
{
    UIView *v0 = [UIView new];
    [self.view addSubview:v0];

    UIView *v1 = [UIView new];
    [v0 addSubview:v1];
    [v1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(10, 10));
    }];

    UIView *v2 = [UIView new];
    [v0 addSubview:v2];
    [v2 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.equalTo(v1);
    }];
}

UIView *v2 = [UIView new];
[v0 addSubview:v2];
[v2 mas_makeConstraints:^(MASConstraintMaker *make) {
    make.size.equalTo(v1);
}];

@implementation AutoLayoutViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    [self useMasonryWithoutSuperView];
}

- (void)useMasonryWithoutSuperView
{
    UIView *masView = [UIView new];
    [masView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.center.equalTo(self.view);
    }];
}

@end

@implementation AutoLayoutViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    [self sampleCode];
}

- (void)sampleCode
{
    AutoLayoutViewController * __weak weakSelf = self;
    [fooNetworkModel fetchData:^{
        AutoLayoutViewController * self = weakSelf;
        [AutoLayoutViewController showSampleViewAtView:self.view];
    }];
}

+ (void)showSampleViewAtView:(UIView *)view
{
    UIView *v1 = [UIView new];
    [view addSubview:v1];
    [v1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(10, 10));
    }];
    
    UIView *v2 = [UIView new];
    [view addSubview:v2];
    [v2 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.equalTo(v1);
    }];
}

@end

@implementation AutoLayoutView

- (void)setFactor1:(NSInteger)factor1
{
    _factor1 = factor1;
    
    if (_factor1满足条件) {
        更新约束1
    }
}

- (void)setFactor2:(NSInteger)factor2
{
    _factor2 = factor2;
    
    if (_factor2满足条件) {
        更新约束2
    }
}

- (void)setFactor3:(NSInteger)factor3
{
    _factor3 = factor3;
    
    if (_factor3满足条件) {
        更新约束3
    }
}

@end

@implementation AutoLayoutView

- (void)setFactor1:(NSInteger)factor1
{
    _factor1 = factor1;
    
    [self setNeedsUpdateConstraints];
}

- (void)setFactor2:(NSInteger)factor2
{
    _factor2 = factor2;
    
    [self setNeedsUpdateConstraints];
}

- (void)setFactor3:(NSInteger)factor3
{
    _factor3 = factor3;
    
    [self setNeedsUpdateConstraints];
}

- (void)updateConstraints
{
    if (self.factor1满足) {
        更新约束1
    }
    
    if (self.factor2满足) {
        更新约束2
    }
    
    if (self.factor3满足) {
        更新约束3
    }
    
    [super updateConstraints];
}

@end

// 头文件
typedef NS_ENUM(NSUInteger, AutoLayoutType) {
    HorizontalLayout,
    VerticalLayout,
};

@interface AutoLayoutView : UIView

@property (nonatomic, strong) UILabel *name;
@property (nonatomic, strong) UILabel *address;

@property (nonatomic, assign) AutoLayoutType layoutType;

@end

// 实现文件
@implementation AutoLayoutView

- (instancetype)initWithFrame:(CGRect)frame
{
    if (self = [super initWithFrame:frame]) {
        _name = [[UILabel alloc] init];
        [self addSubview:_name];
        
        _address = [[UILabel alloc] init];
        [self addSubview:_address];
        
        [_name mas_updateConstraints:^(MASConstraintMaker *make) {
            make.left.top.equalTo(self);
        }];
    }
    return self;
}

- (void)updateConstraints
{
    if (self.layoutType == HorizontalLayout) {
       // // 此处误用mas_updateConstraints
        [self.address mas_updateConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(self.name);
            make.left.equalTo(self.name.mas_right).offset(10);
        }];
    } else {
        // 此处误用mas_updateConstraints
        [self.address mas_updateConstraints:^(MASConstraintMaker *make) {
            make.left.equalTo(self.name);
            make.top.equalTo(self.name.mas_bottom).offset(10);
        }];
    }
    
    [super updateConstraints];
}

- (void)setLayoutType:(AutoLayoutType)layoutType
{
    _layoutType = layoutType;
    
    [self setNeedsUpdateConstraints];
}

@end

// 外部调用代码
- (void)sampleCode
{
    AutoLayoutView *view = [[AutoLayoutView alloc] init];
    view.name.text = @"name";
    view.address.text = @"address";
    [self.view addSubview:view];
    [view mas_makeConstraints:^(MASConstraintMaker *make) {
        make.center.equalTo(self.view);
        make.size.mas_equalTo(CGSizeMake(200, 300));
    }];
    
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        view.layoutType = VerticalLayout; //修改布局方式后，出现布局冲突
    });
}

- (void)removeObjectsUseFor
{   
    NSMutableArray *contents = [@[@"how", @"to", @"remove", @"remove", @"object"] mutableCopy];
    for (NSInteger i = 0; i != contents.count; ++i) {
        NSString *var = contents[i];
        if ([var isEqualToString:@"remove"]) {
            [contents removeObject:var];
            break;
        }
    }
    
    NSLog(@"%@", contents);
}

- (void)removeObjectsUseFor
{   
    NSMutableArray *contents = [@[@"how", @"to", @"remove", @"remove", @"object"] mutableCopy];
    for (NSInteger i = 0; i != contents.count; ++i) {
        NSString *var = contents[i];
        if ([var isEqualToString:@"remove"]) {
            [contents removeObjectAtIndex:i];
        }
    }
    
    NSLog(@"%@", contents);
}

- (void)removeObjectsUseForIn
{
    NSMutableArray *contents = [@[@"how", @"to", @"remove", @"object"] mutableCopy];
    for (NSString *var in contents) {
        if ([var isEqualToString:@"remove"]) {
            [contents removeObject:var];
        }
    }
    
    NSLog(@"%@", contents);
}

- (void)removeObjectsReversed
{
    NSMutableArray *contents = [@[@"how", @"to", @"remove", @"remove", @"object"] mutableCopy];
    for (NSInteger i = contents.count - 1; i >= 0; --i) {
        NSString *var = contents[i];
        if ([var isEqualToString:@"remove"]) {
            [contents removeObjectAtIndex:i];
        }
    }
    
    NSLog(@"%@", contents);
}

- (void)removeObjectsUseEnumration
{
    NSMutableArray *contents = [@[@"how", @"remove", @"to", @"remove", @"object"] mutableCopy];
    NSIndexSet *indexSet =
        [contents indexesOfObjectsPassingTest:^BOOL(NSString *  _Nonnull var, NSUInteger idx, BOOL * _Nonnull stop) {
            return [var isEqualToString:@"remove"];
        }];
    [contents removeObjectsAtIndexes:indexSet];
    
    NSLog(@"%@", indexSet);
    NSLog(@"%@", contents);
}

CALayer *layer = [[CALayer alloc] init];
[self.view.layer addSublayer:layer];
layer.backgroundColor = [[UIColor redColor] CGColor];
layer.bounds = CGRectMake(0, 0, 200, 60);
// 在不改变锚点的情况下设置layer居中
layer.position = CGPointMake(layer.superlayer.frame.size.width / 2, layer.position.y);  // 水平居中
layer.position = CGPointMake(layer.position.x, layer.superlayer.frame.size.height / 2); // 垂直居中

CALayer *layer = [[CALayer alloc] init];
[self.view.layer addSublayer:layer];
layer.backgroundColor = [[UIColor redColor] CGColor];
layer.bounds = CGRectMake(0, 0, 200, 60);
layer.position = CGPointMake(200, 200);
layer.transform = CATransform3DMakeScale(2, 0.5, 1); // x拉升为之前的2倍，y压缩为之前的1 / 2, z不变

NSLog(@"CALayer frame : %@", NSStringFromCGRect(layer.frame));
NSLog(@"CALayer bounds : %@", NSStringFromCGRect(layer.bounds));
NSLog(@"CALayer position : %@", NSStringFromCGPoint(layer.position));
NSLog(@"CALayer anchorPoint : %@", NSStringFromCGPoint(layer.anchorPoint));

//2016-07-27 21:10:38.034 CommonTest[47569:5204919] CALayer frame : { {0, 185}, {400, 30} }
//2016-07-27 21:10:38.034 CommonTest[47569:5204919] CALayer bounds : { {0, 0}, {200, 60} }
//2016-07-27 21:10:38.035 CommonTest[47569:5204919] CALayer position : {200, 200}
//2016-07-27 21:10:38.035 CommonTest[47569:5204919] CALayer anchorPoint : {0.5, 0.5}

CGFloat Radian(CGFloat angle)
{
    return angle * M_PI / 180.f;
}

CALayer *layer = [[CALayer alloc] init];
[self.view.layer addSublayer:layer];
layer.backgroundColor = [[UIColor redColor] CGColor];
layer.bounds = CGRectMake(0, 0, 200, 60);
layer.position = CGPointMake(200, 200);
layer.transform = CATransform3DMakeRotation(Radian(30), 0, 0, 1); //绕着Z轴顺时针旋转30°

NSLog(@"%@ %@ %@ %@", @(layer.transform.m11), @(layer.transform.m12), @(layer.transform.m13), @(layer.transform.m14));
NSLog(@"%@ %@ %@ %@", @(layer.transform.m21), @(layer.transform.m22), @(layer.transform.m23), @(layer.transform.m24));
NSLog(@"%@ %@ %@ %@", @(layer.transform.m31), @(layer.transform.m32), @(layer.transform.m33), @(layer.transform.m34));
NSLog(@"%@ %@ %@ %@", @(layer.transform.m41), @(layer.transform.m42), @(layer.transform.m43), @(layer.transform.m44));
NSLog(@"CALayer frame : %@", NSStringFromCGRect(layer.frame));
NSLog(@"CALayer bounds : %@", NSStringFromCGRect(layer.bounds));
NSLog(@"CALayer position : %@", NSStringFromCGPoint(layer.position));
NSLog(@"CALayer anchorPoint : %@", NSStringFromCGPoint(layer.anchorPoint));

//2016-07-27 21:24:13.989 CommonTest[48025:5281194] 0.8660254037844387 0.4999999999999999 0 0
//2016-07-27 21:24:13.990 CommonTest[48025:5281194] -0.4999999999999999 0.8660254037844387 0 0
//2016-07-27 21:24:13.990 CommonTest[48025:5281194] 0 0 1 0
//2016-07-27 21:24:13.990 CommonTest[48025:5281194] 0 0 0 1
//2016-07-27 21:24:13.990 CommonTest[48025:5281194] CALayer frame : { {98.397459621556123, 124.01923788646684}, {203.20508075688778, 151.96152422706632} }
//2016-07-27 21:24:13.990 CommonTest[48025:5281194] CALayer bounds : { {0, 0}, {200, 60} }
//2016-07-27 21:24:13.991 CommonTest[48025:5281194] CALayer position : {200, 200}
//2016-07-27 21:24:13.991 CommonTest[48025:5281194] CALayer anchorPoint : {0.5, 0.5}

static NSString * const WMHomePageFlowPath = @"WMHomePageFlowPath";`

变为

static NSString * const kWMHomePageFlowPath = @"kWMHomePageFlowPath";

#define TOP_VIEW_FIX_HEIGHT 116.0

变为

static const CGFloat kTopViewFixHeight = 116.0f;

[eventDictionary setObject:code forKey:@"code"];

变为

eventDictionary[@"code"] = code;

[cellIndexs objectAtIndex:cellIndexs.count - 1];

变为

cellIndexs[cellIndexs.count - 1];

[UIView animateWithDuration:0.1 animations:^{}];// 无意义

- (void)didReceiveMemoryWarning {// IDE自动生成的函数，没用到就删了
    [super didReceiveMemoryWarning];
}

if (bottomImageView) {
    bottomImageView.frame = imageViewRect;
}

NSDictionary *URLParameters = @{@"address" : address,
                                @"keyword" : keyword,
                                @"poi_page_index" : poiPageIndex,
                                @"poi_page_size" : poiPageSize,
                                @"food_page_index" : foodPageIndex,
                                @"food_page_size" : foodPageSize};
// 以上代码在address、keyword、poiPageIndex、poiPageSize、foodPageIndex、foodPageSize任意一个变量为nil的时候会crash

if (self.poi.deliveryType == 1) { //magic number，enum化
    deliveryTimeView = [self viewForMTDelivery];
} else {
    deliveryTimeView = [self viewForDeliveryTime];
}

if (poi.picture.length > 0) {
    [self.headImgView sd_setImageWithURL:[NSURL URLWithString:poi.picture]];
} else {
    [self.headImgView sd_setImageWithURL:[NSURL URLWithString:defaultImage]];
} 

变为

NSString *imgURLStr = poi.picture.length > 0 ? poi.picture : defaultImage;
[self.headImgView sd_setImageWithURL:[NSURL URLWithString:imgURLStr]];

titleLabel.centerY = 22.5;// 45 / 2.0 ? 建议45可以提出来，好多地方都用到了

例1
if (distance > 500000) {
    distance = 500000;
}
// 这些数字用 static const NSInteger命名一下？或者加个注释？

例2
if (mutebelArray.count > 10) {//只保留10个搜索历史
    NSRange removeRange = NSMakeRange(10, mutebelArray.count - 10);
    [mutebelArray removeObjectsInRange:removeRange];
}
// 10提出来，kMaxRetainedSearchKeyCount = 10

@protocol WMFoodListViewControllerDelegate <NSObject>

@optional
- (void)incFood:(WMOrderedSkuInfo *)orderedSku count:(NSInteger)count inBucket:(NSInteger)bucketNum animated:(BOOL)animated originalRect:(CGRect)originalRect;
- (void)decFood:(WMOrderedSkuInfo *)orderedSku count:(NSInteger)count;

@end
// 检查一下这些optional的代理方法。是否用respondsToSelector保护了

//ui
NaviBar高度
#ifndef WM_NAVIBAR_HEIGHT
#define WM_NAVIBAR_HEIGHT  (WM_ABOVE_IOS(7) ? 64:44)
#endif

//1点的线宽
#ifndef WM_SINGLE_LINE_WEIGHT
#define WM_SINGLE_LINE_WEIGHT     (1 / [UIScreen mainScreen].scale)
#endif

某.h文件内容如下。。。

#import <Foundation/Foundation.h>
#import "WMOrder.h"
#import "WMDeliveryInfo.h"

@interface WMOrderPreviewInfo : NSObject

@property (nonatomic,strong) WMOrder *order;
@property (nonatomic, strong) WMDeliveryInfo *deliveryInfo;

@end

变为

@class WMOrder
@class WMDeliveryInfo

@interface WMOrderPreviewInfo : NSObject

@property (nonatomic,strong) WMOrder *order;
@property (nonatomic, strong) WMDeliveryInfo *deliveryInfo;

@end

@interface Test ()

@property (nonatomic, assign) NSInteger age;

@end

@impliment Test

- (void)fooDelegate:(NSInteger)theAge
{
    _age = theAge;
}

@end

[WMAlert showWithAction:^(NSInteger theAge) {
    _age = theAge;  //maybe cause retain cycle
}];

设计一个方法，来表示对象中有没有内容

@interface Foo : NSObject

-(BOOL)isEmpty;

@end

如果判断这个对象是不是“空”很容易写出如下代码

if ([foo isEmpty]) {
    //当foo为“空”的时候执行一些动作
}

这种判断方式有个问题，即当foo为nil的时候会存在误判，很明显foo为nil时，该对象在语义上是“空”，但是它不会进入该if分支，因为[nil isEmpty]返回NO.

因此，正确的写法应该是：

if (foo == nil || [foo isEmpty]) {
    //当foo为“空”的时候执行一些动作
}

追根溯源还是这种签名设计方式有漏洞，试想OC的NSString并没有一个isEmpty方法，是否是基于这种考虑。