从Java代码Android访问res/raw文件夹中的json文件

我在试图找出如何从Android项目的资产文件夹中访问quick.JSON文件时遇到了一些问题

InputStream is = context.getAssets().open("departments.json");

这是我用来从JSON文件加载问题的方法：

public ArrayList<Question> loadQuestions() throws IOException, JSONException {
    ArrayList<Question> questions = new ArrayList<Question>();
    BufferedReader reader = null;
    try{
        // Open and read the file into a StringBuilder
        //InputStream in = mContext.openFileInput(mContext.getResources().getString(R.raw.quiz));
        //InputStream in = mContext.getResources().openRawResource(R.raw.quiz);
        InputStream in = mContext.getAssets().open("quiz.js");
        reader = new BufferedReader(new InputStreamReader(in));
        StringBuilder jsonString = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            // Line breaks are omitted and irrelevant
            jsonString.append(line);
        }
        // Parse the JSON using JSONTokener
        JSONArray array = (JSONArray) new JSONTokener(jsonString.toString()).nextValue();

        // Build the array of crimes from JSONObjects
        for(int i=0; i< array.length(); i++){
            questions.add(new Question(array.getJSONObject(i)));
        }
    }
    catch (FileNotFoundException e){
        // Ignore this one; it happens when starting fresh
    }
    finally{
        if(reader != null){
            reader.close();
        }
    }
    return questions;
}

InputStream is = context.getAssets().open("departments.json");

]

InputStream is = context.getAssets().open("departments.json");

这是我尝试使用JSON中的数据的活动

public class QuizActivity extends Activity {

private ArrayList<Question> questions;
private QuizJSONSerializer mSerializer; 

private static final String TAG = "QuizActivity";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_quiz);


    // This is where i get the loadQuestions from
    mSerializer = new QuizJSONSerializer(getApplicationContext());

    try{
        questions = mSerializer.loadQuestions();
    }
    catch (Exception e){
        questions = new ArrayList<Question>();
        Log.e(TAG, "Error loading questions: ", e);
    }

    ImageView iv = (ImageView) findViewById(R.id.question_image);
    iv.setImageResource(R.drawable.mdpi_farlig_sving);

    TextView tv = (TextView) findViewById(R.id.question_text_view);
    if(questions == null){
        tv.setText("Something wrong with the array!");
    }
    else{
        tv.setText(questions.get(0).getQuestion());
    }

    Button b1 = (Button) findViewById(R.id.option_one);
    b1.setText("String 1");

    Button b2 = (Button) findViewById(R.id.option_two);
    b2.setText("String 2");

    Button b3 = (Button) findViewById(R.id.option_three);
    b3.setText("String 3");

    Button b4 = (Button) findViewById(R.id.option_four);
    b4.setText("String 4");
}

InputStream is = context.getAssets().open("departments.json");

}

InputStream is = context.getAssets().open("departments.json");

似乎JSON文件从未加载，因为我的异常中的代码始终运行

InputStream is = context.getAssets().open("departments.json");

JSON文件中是否缺少某些内容

InputStream is = context.getAssets().open("departments.json");

---

有什么好建议吗？

您应该创建资产文件夹并将文件放在那里。然后你可以用它来访问你的文件

InputStream is = context.getAssets().open("departments.json");

---

为什么不使用assets文件夹将JSON捆绑到应用程序中？它毕竟是一种资产，而不是原始资源。

使用以下方法创建资产文件夹：

InputStream is = context.getAssets().open("departments.json");

InputStream input = context.getAssets().open("yourJSON.json");

---

您将访问您的文件。

mContext.getResources.openrawsourcer.raw.quick应该可以。。。IndexOutOfBounds未与此代码连接…IndexOutOfBounds？你确定它与这段代码有关吗？实际上，现在我不确定了，因为现在我把JSON文件移到了assets文件夹，并在下面的帖子中尝试了Ragaisis解决方案。这也不起作用。getAssets和res/raw不是一回事。。。

InputStream is = context.getAssets().open("departments.json");