我正在开发一个测验应用程序，从Json文件（复杂）
中获取问题和主题 {
"name": "JHS ASANTE TWI",
"course_id": "73",
"courseID": "01JS88",
"package_code": "JHS",
"description": "",
"category": "",
"questions": {
"58242": {
"qid": "58242",
"topic": "1268",
"instructions": "Yi nea εne nea yεasensane aseε no asekyerε bɔ abira",
"text": "<p>Kofi de sika no maa <span style=\"text-decoration: underline;\">aberante<span>ε</span></span> bi.</p>",
"resource": "",
"qtype": "SINGLE",
"confirmed": "1",
"public": "1",
"flagged": "0",
"updated_at": "2014-07-10 12:29:33",
"rating": 0,
"answers": [
{
"id": "250310",
"text": "<p>ababaawa</p>",
"value": "1",
"solution": ""
},
{
"id": "250311",
"text": "<p>ab<span>ɔfra</span><span><br /></span></p>",
"value": "0",
"solution": ""
},
{
"id": "250312",
"text": "<p>aberewa</p>",
"value": "0",
"solution": ""
},
{
"id": "250313",
"text": "<p>abarimaa</p>",
"value": "0",
"solution": ""
}
]
},
"58245": {
"qid": "58245",
"topic": "1268",
"instructions": "Yi nea εne nea yεasensane aseε no asekyerε bɔ abira",
"text": "<p>Mehunuu m'adamfo bi nnora <span style=\"text-decoration: underline;\">an</span><span style=\"text-decoration: underline;\">ɔpa</span>.</p>\n<p> </p>\n<p> </p>",
"resource": "",
"qtype": "SINGLE",
"confirmed": "1",
"public": "1",
"flagged": "0",
"updated_at": "2014-07-10 12:43:29",
"rating": 0,
"answers": [
{
"id": "250329",
"text": "<p>awia</p>",
"value": "1",
"solution": ""
},
{
"id": "250328",
"text": "<p>anwummer<strong></strong>ε</p>",
"value": "0",
"solution": ""
},
{
"id": "250327",
"text": "<p>ahemadakye</p>",
"value": "0",
"solution": ""
},
{
"id": "250326",
"text": "<p>owigyinaeε</p>",
"value": "0",
"solution": ""
}
]
}
},
"updated_at": "2014-10-28 16:07:54",
"nquestions": 788
}
如何在我的应用中获得所有问题？
这是我写的代码，但它只在＆＃34;问题＆＃34;
下调用了一个问题//Method that will parse the JSON file and will return a JSONObject
public String loadJSONFromRaw() {
String json = null;
try {
InputStream questions = this.getBaseContext().getResources()
.openRawResource(R.raw.document);
int size = questions.available();
byte[] buffer = new byte[size];
questions.read(buffer);
questions.close();
json = new String(buffer, "UTF-8");
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
return Html.fromHtml(json).toString();
}
//this calls and executes the code above
private void showQuestion(int qIndex, boolean review) {
try {
obj = new JSONObject(loadJSONFromAsset());
String header = obj.getString("name");
Log.v("name--", obj.getString("name"));
System.out.println(header);
subject.setText(header);
//JSONObject aQues = QuestionPackage.getQuesList().getJSONObject(qIndex);
String instructions = obj.getJSONObject("questions").getJSONObject("58242").getString("instructions");
intruction.setText(instructions);
String quesValue = obj.getJSONObject("questions").getJSONObject("58242").getString("text");
// String quesValue = myString.getString("name");
questionView.setText(quesValue);
System.out.println(quesValue);
if (correctAns[qIndex] == -1) {
String correctAnsStr = obj.getJSONObject("questions").getJSONObject("58242").getString("confirmed");
correctAns[qIndex] = Integer.parseInt(correctAnsStr);
}
//subject.setText(header);
answers.check(-1);
optionone.setTextColor(Color.BLACK);
optiontwo.setTextColor(Color.BLACK);
optionthree.setTextColor(Color.BLACK);
optionfour.setTextColor(Color.BLACK);
JSONArray ansList = obj.getJSONObject("questions").getJSONObject("58242").getJSONArray("answers");
String aAns = ansList.getJSONObject(0).getString("text");
optionone.setText(aAns.toCharArray(), 0, aAns.length());
aAns = ansList.getJSONObject(1).getString("text");
optiontwo.setText(aAns.toCharArray(), 0, aAns.length());
aAns = ansList.getJSONObject(2).getString("text");
optionthree.setText(aAns.toCharArray(), 0, aAns.length());
aAns = ansList.getJSONObject(3).getString("text");
optionfour.setText(aAns.toCharArray(), 0, aAns.length());
Log.d("", selected[qIndex] + "");
if (selected[qIndex] == 0)
answers.check(R.id.optionone);
if (selected[qIndex] == 1)
answers.check(R.id.optiontwo);
if (selected[qIndex] == 2)
answers.check(R.id.optionthree);
if (selected[qIndex] == 3)
answers.check(R.id.optionfour);
setScoreTitle();
if (quesIndex == (QuestionPackage.getQuesList().length() - 1))
next.setEnabled(false);
if (quesIndex == 0)
back.setEnabled(false);
if (quesIndex > 0)
back.setEnabled(true);
if (quesIndex < (QuestionPackage.getQuesList().length() - 1))
next.setEnabled(true);
if (review) {
Log.d("review", selected[qIndex] + "" + correctAns[qIndex]);
if (selected[qIndex] != correctAns[qIndex]) {
if (selected[qIndex] == 0)
optionone.setTextColor(Color.RED);
if (selected[qIndex] == 1)
optiontwo.setTextColor(Color.RED);
if (selected[qIndex] == 2)
optionthree.setTextColor(Color.RED);
if (selected[qIndex] == 3)
optionfour.setTextColor(Color.RED);
}
if (correctAns[qIndex] == 0)
optionone.setTextColor(Color.GREEN);
if (correctAns[qIndex] == 1)
optiontwo.setTextColor(Color.GREEN);
if (correctAns[qIndex] == 2)
optionthree.setTextColor(Color.GREEN);
if (correctAns[qIndex] == 3)
optionfour.setTextColor(Color.GREEN);
}
} catch (Exception e) {
Log.e(this.getClass().toString(), e.getMessage(), e.getCause());
}
}
答案 0 :(得分：0)
如何在我的应用中获得所有问题？
更简单的方法是使用gson库[1]：https://sites.google.com/site/gson/gson-user-guide
您可以将JSON字符串转换为等效的Java对象并开始阅读该对象。