如何检查枚举 class 中的值？

Question

我想检查从 json 对象返回的标签是否具有枚举 class 中的值之一。

Gson gson = new Gson();
            AnalysisResult result = gson.fromJson(data, AnalysisResult.class);
for(Enum p : Enum.values()){
    if(p.name().equals(result.tags)){
        Intent in1 = new Intent(Analyze.this,  Analyze2.class);
        startActivity(in1);
    }else {
        for (final Caption caption : result.description.captions) {
            final Handler handler = new Handler();
            handler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    speakOut("Result:" + caption.text);  
                }
            }, 100);
        }
    }
}

这是我的枚举class

public enum Enum {
    person,
    people,
    people_baby,
    people_crowd,
    people_group,
    people_hand,
    people_many,
    people_portrait,
    people_show,
    people_tattoo,
    people_young
}

这是返回的标签...

"tags":["teddy","indoor","clothing","necktie","person","bear","wearing","green","brown","stuffed","sitting","man","bow","neck","face","shirt","blue","hat","close","grey","laying","black","glasses","head","bed","white","holding","cat","sleeping"]}

我的问题是它总是转到 else 语句。您认为代码有什么问题？

Answer 1

我不确定我是否完全理解你想在这里实现的目标，而且我不知道这个 'Tag' 对象是什么，但我猜你想做这样的事情：

Gson gson = new Gson();
AnalysisResult result = gson.fromJson(data, AnalysisResult.class);
boolean hasTag = false;
for (Tag t : result.tags) {
    if (Enum.hasTag(t.getTagName())) {
        hasTag = true;
        break;
    }
}

if (hasTag) {
    Intent in1 = new Intent(Analyze.this, Analyze2.class);
    startActivity(in1);
} else {
    for (final Caption caption : result.description.captions) {
        final Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                speakOut("Result:" + caption.text);
            }
        }, 100);
    }
}

你的枚举是这样的：

public enum Enum {
    person,
    people,
    people_baby,
    people_crowd,
    people_group,
    people_hand,
    people_many,
    people_portrait,
    people_show,
    people_tattoo,
    people_young;

    public static boolean hasTag(String tag) {
        for (Enum e : values()) {
            if (e.name().equals(tag))
                return true;
        }

        return false;
    }
}

如何检查枚举 class 中的值？

How to check values inside enum class?

java

android

json

enum-class