ios - JSON 和多个顺序 View Controller

Question

亲爱的 Stack Overflow 用户，

我有以下 JSON:

 {
"first": [
    {
        "type": "headingtext",
        "label": "Atrial Fibrillation Guideline"
    },
    {
        "type": "text",
        "label": "Onset of Atrial Fibrillation?"
    },
    {
        "type": "button",
        "label": "Less than 48 hours",
        "destination": "less48hours"
    },
    {
        "type": "button",
        "label": "More than 48 hours",
        "destination": "more48hours"
    }
],
"less48hours": [
    {
        "type": "headingtext",
        "label": "Less than 48 hours"
    },
    {
        "type": "text",
        "label": "Patient is Stable or Unstable?"
    },
    {
        "type": "button",
        "label": "Unstable Patient",
        "destination": "unstableless48hours"
    },
    {
        "type": "button",
        "label": "Stable Patient",
        "destination": "stable"
    }
],
"unstableless48hours": [
    {
        "type": "headingtext",
        "label": "Unstable Patient"
    },
    {
        "type": "button",
        "label": "High Stroke Risk",
        "destination": "highstrokerisk"
    },
    {
        "type": "button",
        "label": "Low Stroke",
        "destination": "lowstrokerisk"
    }
],
"highstrokerisk": [
    {
        "type": "headingtext",
        "label": "High Stroke Risk"
    },
    {
        "type": "text",
        "label": "Management Plan"
    },
    {
        "type": "text",
        "label": "Cardioversion under Heparin Cover\n-Keep on monitor for 3 hours\n-Need Long Term Oral Anti-coagulation"
    } 
],
"lowstrokerisk": [
    {
        "type": "headingtext",
        "label": "High Stroke Risk"
    },
    {
        "type": "text",
        "label": "Management Plan"
    },
    {
        "type": "text",
        "label": "Cardioversion under Heparin Cover\n-Keep on monitor for 3 hours\n-No Need for Long Term Oral Anti-coagulation"
    }      
],
"stable": [
    {
        "type": "headingtext",
        "label": "Stable Patient"
    },
    {
        "type": "button",
        "label": "Healthy",
        "destination": "healthyaf"
    },
    {
        "type": "button",
        "label": "Unhealthy",
    "destination": "unhealthyaf"
    }
],
"unhealthyaf": [
    {
        "type": "headingtext",
        "label": "AF in Stable Patients who are unhealthy"
    },
    {
        "type": "text",
        "label": "AIM\n-Rate Control\n-Add Oral Anti-Coagulant or Aspirin if Stroke Risk is more than 2"
    },
    {
        "type": "text",
        "label": "What is the patient's lifestyle?"
    },
    {
        "type": "button",
        "label": "Inactive",
        "destination": "inactive"
    },
    {
        "type": "button",
        "label": "Active",
        "destination": "active"
    }
],
"more48hours": [
    {
        "type": "headingtext",
        "label": "More than 48 hours of onset of AF"
    },
    {
        "type": "button",
        "label": "Stable",
    "destination": "stable"
    },
    {
        "type": "button",
        "label": "Unstable",
    "destination": "unstablemore48hours"
    }        
],
"unstablemore48hours": [
    {
        "type": "headingtext",
        "label": "Unstable Patient"
    },
    {
        "type": "text",
        "label": "Immediate Cardioversion with Heparin Cover\n-Oral Anticoagulant could be started afterwards and continued for 4 weeks or lifelong if stroke risk factor is more than 1"
    }      
],
"Inactive": [
    {
        "type": "headingtext",
        "label": "Inactive Lifestyle"
    },
    {
        "type": "text",
        "label": "Digoxin"
    }
],
"Active": [
    {
        "type": "headingtext",
        "label": "Active Lifestyle"
    },
    {
        "type": "button",
        "label": "No Disease/Hypertension",
    "destination": "nodiseaseht"
    },
    {
        "type": "button",
        "label": "Congestive Heart Failure",
    "destination": "chf"
    },
    {
        "type": "button",
        "label": "COPD",
        "destination": "copd"
    }
],
"nodiseaseht": [
    {
        "type": "headingtext",
        "label": "Treatment Options in No Disease/HT"
    },
    {
        "type": "text",
        "label": "Beta-Blocker \n-Diltiazem \n-Verapamil \n-Digoxin"
    }
],
"chf": [
    {
        "type": "headingtext",
        "label": "Treatment Options in Congestive Heart Failure"
    },
    {
    "type": "text",
        "label": "Beta-Blocker \n-Diltiazem"
    }
],
"copd": [
    {
        "type": "headingtext",
        "label": "Treatment Options in COPD"
    },
    {
        "type": "text",
        "label": "Diltiazem \n-Verapamil \n-Digoxin \n-Beta-1 Selective Blocker"
    }
]
}

我在 StackOverflow 上的以下研究并没有给我带来我希望的启发:

multiple view controllers strategy

passing controller json result to view

我的 friend 设法将其转化为具有顺序 View 和导致不同 View Controller 的不同点击的 Android 应用程序，但是如何可能为 iO 和 Objective-C 得出相同的结果？这些平台似乎要困难得多。

我知道需要解析 JSON 数据这一事实，但在将不同的 JSON 操作转换为顺序 View Controller 时不知何故发现困难。

Answer 1

首先将您的响应字符串转换为 NSData。然后

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:yourData options:kNilOptions error:&jsonError];
NSArray *first = [json objectForKey:@"first"];
for (NSDictionary *dict in first) {
    NSString *type = [dict objectForKey:@"type"];
    /// and so on
}