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iOS UIWebView小整理(四)(h5随意调起原生页面)

2017-12-20  本文已影响431人  MyLee

前言

APP在运营过程当中,很多时候需要做一些推广活动类的h5,这类h5会涉及跳转到原生的某个页面或者需要使用某个原生已经存在的功能。针对这种情况,很多人会说需要先前埋点一些特定的交互到webview上,但有时候计划赶不上计划,推广活动有很多中类型,谁也很难详尽列举需要埋点的交互,本着偷懒省事的原则,自己曾经设计了一套使用(WebViewJavascriptBridge + Runtime)解决方案,整理出来仅供后来者参考。

预备知识

方案设计

sheji.png

实现过程

  1. webview预留监听事件 clientDefineAction ,该事件可写入自定义的webview基类当中
  2. h5在需要交互的地方,使用WebViewJavascriptBridge传入特定data,格式如下:
bridge.callHandler('clientDefineAction', {'type':'1','controll':'XXViewController','params':'{'xx':'xx'}'}, function(response) {});

data格式说明:
type:int 0或1 ,调用类型, 0:方法,1:页面
controll:string类型,需要调用的方法或者跳转的页面,需要ios跟android分别给到配置人员
params:string类型,客户端需要用的参数,需要ios跟android分别给到配置人员

对于controll需要传入的参数是实体类的情况,params以以下格式返回:

'params':{'xx':'xx','entity':{'UserEntity_userInfo':{'birthday':'1988-09-09','name':'hahaha'}}

params 中key为 entity 时表明解析的json为实体类,实体类为UserEntity,在controll中的参数名称为userInfo
可看ViewController对比理解:

params_entity.png
  1. 解析data之后,调用Runtime解析器进行处理。

核心处理逻辑代码

ps: 涉及公司业务,已去掉部分代码

#pragma mark ------ 监听预留事件
- (void)clientDefineAction:(NSDictionary *)dict
{
    NSInteger type = [StringHelper formatterIntValue:[dict objectForKey:@"type"]];
    NSString *controllName = [dict objectForKey:@"controll"];
    NSDictionary *params = [dict objectForKey:@"params"];
    
    if (type == 0) {
        //调方法
        SEL methodsel = NSSelectorFromString([NSString stringWithFormat:@"%@:",controllName]);
       if ([self.methodHandle respondsToSelector:methodsel]) {
            //methodHandle为常用方法(微信分享、支付等)集合,需要自己整理
       }
    }else{
        //调页面
        NSString *class = [controllName stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
        
        if ([class isEqualToString:@"tab1"]) {
            //跳转tab1
            return;
        }
        
        if ([class isEqualToString:@"tab2"]) {
            //跳转tab2
            return;
        }
        
        if ([class isEqualToString:@"tab3"]) {
            //跳转tab3
            return;
        }
        
        if ([class isEqualToString:@"tab4"]) {
            //跳转tab4
            return;
        }
        
        [self findRightRoutedWithClass:class Params:params];
    }
}

runtime解析器

- (void)findRightRoutedWithClass:(NSString *)class Params:(NSDictionary *)params
{
    const char *className = [class cStringUsingEncoding:NSASCIIStringEncoding];
    // 根据字符串返回类
    Class rClass = objc_getClass(className);
    if (!rClass){
        return;
    }
    // 创建对象
    id instance = [[rClass alloc] init];
    
    WS(weakSelf);
    if (params) {
        // 对该对象赋值属性
        NSDictionary * propertys = params;
        [propertys enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
            if ([key isEqualToString:@"entity"]) {
                //对象类型属性
                NSDictionary *entitys = [propertys objectForKey:key];
                [entitys enumerateKeysAndObjectsUsingBlock:^(NSString *ckey, id entityObj, BOOL *s) {
                    NSArray *entityParamArray = [ckey componentsSeparatedByString:@"_"];
                    
                    if (entityParamArray.count > 0) {
                        const char *className = [entityParamArray[0] cStringUsingEncoding:NSASCIIStringEncoding];
                        Class entity = objc_getClass(className);
                        entity = [entity objectWithKeyValues:entityObj];//这里使用MJExtension解析对象
                        if ([weakSelf checkIsExistPropertyWithInstance:instance verifyPropertyName:entityParamArray[1]]) {
                            // 利用kvc赋值
                            [instance setValue:entity forKey:entityParamArray[1]];
                        }
                    }
                }];
            }else{
                //普通类型属性
                if ([weakSelf checkIsExistPropertyWithInstance:instance verifyPropertyName:key]) {
                    // 利用kvc赋值
                    [instance setValue:obj forKey:key];
                }
            }
        }];
    }
    
    [self.currentParentVc pushNormalViewController:instance];
}

- (BOOL)checkIsExistPropertyWithInstance:(id)instance verifyPropertyName:(NSString *)verifyPropertyName
{
    unsigned int outCount, i;
    
    // 获取对象里的属性列表
    objc_property_t * properties = class_copyPropertyList([instance class], &outCount);
    
    for (i = 0; i < outCount; i++) {
        objc_property_t property =properties[i];
        //  属性名转成字符串
        NSString *propertyName = [[NSString alloc] initWithCString:property_getName(property) encoding:NSUTF8StringEncoding];
        // 判断该属性是否存在
        if ([propertyName isEqualToString:verifyPropertyName]) {
            free(properties);
            return YES;
        }
    }
    
    free(properties);
    
    //这里处理UIViewController特定属性
    if ([verifyPropertyName isEqualToString:@"title"]) {
        return YES;
    }
    
    return NO;
}

h5 关键js:

<script>
$(function(){
    new FastClick(document.body);
    setupWebViewJavascriptBridge(function(bridge) {
        //跳转
        $(".shareBtn").click(function(){
//              bridge.callHandler('clientDefineAction', {'type':'1','controll':'XxxViewController','params':{'xxx':'xxx'}}, function(response) {});
//              bridge.callHandler('clientDefineAction', {'type':'1','controll':'tab1'}, function(response) {});
                bridge.callHandler('clientDefineAction', {'type':'0','controll':'shareToQQ','params':{'shareUrl': 'http://www.baidu.com','shareTitle':'奇异果子','shareDesc':'抢购价:¥0.10'}}, function(response) {});
            });         
    });
});
    
function setupWebViewJavascriptBridge(callback) {
    if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
    if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
    window.WVJBCallbacks = [callback];
    var WVJBIframe = document.createElement('iframe');
    WVJBIframe.style.display = 'none';
    WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
    document.documentElement.appendChild(WVJBIframe);
    setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0);
}
</script>

最后

demo这里就不给出来了,等整理下一篇(短链跳转)再给,>_<//

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