我试图从JSON数组中获取两个不同的对象，但不知怎的，我无法获取第二个对象（＆＃34; opening_hours＆＃34;）。不确定我是否正确解析它。我也想得到元素＆＃34; open_now＆＃34;来自＆＃34; opening_hours＆＃34;并将其设置为方法＆＃34; SetAuthor＆＃34;。下面是JSON数组的代码URL：
public class MainActivity extends AppCompatActivity {
private static final int REQ_CODE_SPEECH_INPUT = 100;
private TextView mVoiceInputTv;
private ImageButton mSpeakBtn;
private static final int PERMISSION_ACCESS_COARSE_LOCATION = 1;
private GoogleApiClient googleApiClient;
int status;
ArrayList<String> result;
ArrayList<Elements> elementList;
ArrayList<Elements> elementListtwo;
ElementAdaptor adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//mVoiceInputTv = (TextView) findViewById(R.id.voiceInput);
mSpeakBtn = (ImageButton) findViewById(R.id.btnSpeak);
mSpeakBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startVoiceInput();
}
});
}
private void startVoiceInput() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Welcome to Harman Framework");
try {
startActivityForResult(intent, REQ_CODE_SPEECH_INPUT);
} catch (ActivityNotFoundException a) {
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQ_CODE_SPEECH_INPUT: {
if (resultCode == RESULT_OK && null != data) {
result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
//mVoiceInputTv.setText(result.get(0));
Toast.makeText(getApplicationContext(), "You searched : " + result.get(0), Toast.LENGTH_LONG).show();
elementList = new ArrayList<Elements>();
new JSONAsyncTask().execute("https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=-33.8670,151.1957&radius=500&types=food&name=" + result.get(0) + "&key=AIzaSyD_kA7xtNYffQNlykVkVGk5ZNQgQtZFZTk");
ListView listview = (ListView)findViewById(R.id.list);
adapter = new ElementAdaptor(getApplicationContext(), R.layout.row, elementList);
listview.setAdapter(adapter);
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long id) {
Intent intent = new Intent(getApplicationContext(), DescriptionActivity.class);
intent.putExtra("title", elementList.get(position).getTitle());
intent.putExtra("author", elementList.get(position).getAuthor());
intent.putExtra("publishedat", elementList.get(position).getPublishedat());
intent.putExtra("description", elementList.get(position).getDescription());
intent.putExtra("imageurl", elementList.get(position).getImage());
startActivity(intent);
}
});
}
break;
}
}
}
//String url = "https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=-33.8670,151.1957&radius=500&types=food&name=" + result.get(0) + "&key=AIzaSyD_kA7xtNYffQNlykVkVGk5ZNQgQtZFZTk";
class JSONAsyncTask extends AsyncTask<String, Void, Boolean> {
ProgressDialog dialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(MainActivity.this);
dialog.setMessage("Loading.......");
dialog.setTitle("Connecting server");
dialog.show();
dialog.setCancelable(false);
}
@Override
protected Boolean doInBackground(String... urls) {
try {
HttpGet httppost = new HttpGet(urls[0]);
HttpParams httpParameters = new BasicHttpParams();
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(httppost);
HttpParams params = httpclient.getParams();
status = response.getStatusLine().getStatusCode();
if (status == 200) {
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
JSONObject jsono = new JSONObject(data);
JSONArray jarray = jsono.getJSONArray("results");
for (int i = 0; i < jarray.length(); i++) {
JSONObject object = jarray.getJSONObject(i);
Elements parameters = new Elements();
parameters.setTitle(object.getString("name"));
parameters.setImage(object.getString("icon"));
elementList.add(parameters);
}
JSONArray jarraytwo = jsono.getJSONArray("opening_hours");
for (int i = 0; i < jarraytwo.length(); i++) {
JSONObject objecttwo = jarraytwo.getJSONObject(i);
Elements parameterstwo = new Elements();
parameterstwo.setAuthor(objecttwo.getString("open_now"));
Toast.makeText(getApplicationContext(), "open_now : " + objecttwo.getString("open_now"), Toast.LENGTH_LONG).show();
elementListtwo.add(parameterstwo);
}
return true;
}
} catch (JSONException e3) {
e3.printStackTrace();
} catch (IOException e2) {
e2.printStackTrace();
}
return false;
}
protected void onPostExecute(Boolean result) {
dialog.cancel();
adapter.notifyDataSetChanged();
if(result == false)
Toast.makeText(getApplicationContext(), "Unable to fetch data from server", Toast.LENGTH_LONG).show();
}
}
}
完整活动代码：
public class Elements {
private String title;
private String description;
private String author;
private String publishedat;
private String urltoimage;
public Elements() {
// TODO Auto-generated constructor stub
}
public Elements(String title, String description, String author,
String publishedat, String urltoimage) {
this.title = title;
this.description = description;
this.author = author;
this.publishedat = publishedat;
this.urltoimage = urltoimage;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getPublishedat() {
return publishedat;
}
public void setPublishedat(String publishedat) {
this.publishedat = publishedat;
}
public String getImage() {
return urltoimage;
}
public void setImage(String urltoimage) {
this.urltoimage = urltoimage;
}
}
Elements.java
{{1}}
答案 0 :(得分：1)
首先＆＃34; opening_hours＆＃34;是JSONObject而不是JSONArray。
第二件事＆＃34; opening_hours＆＃34;对象内部＆＃34;结果＆＃34;阵列。
所以解析应该是这样的
for (int i = 0; i < jarray.length(); i++) {
JSONObject object = jarray.getJSONObject(i);
Elements parameters = new Elements();
parameters.setTitle(object.getString("name"));
parameters.setImage(object.getString("icon"));
elementList.add(parameters);
// add here
JSONObject jarraytwo = jsono.getJSONObject("opening_hours");
}
答案 1 :(得分：0)
尝试此JSON解析
JSONObject jsono = new JSONObject(data);
JSONArray jarray = jsono.getJSONArray("results");
for (int i = 0; i < jarray.length(); i++) {
JSONObject object = jarray.getJSONObject(i);
Elements parameters = new Elements();
parameters.setTitle(object.getString("name"));
parameters.setImage(object.getString("icon"));
elementList.add(parameters);
JSONArray jarraytwo = object.getJSONArray("opening_hours");
for (int i = 0; i < jarraytwo.length(); i++) {
JSONObject objecttwo = jarraytwo.getJSONObject(i);
Elements parameterstwo = new Elements();
parameterstwo.setAuthor(objecttwo.getString("open_now"));
Toast.makeText(getApplicationContext(), "open_now : " + objecttwo.getString("open_now"), Toast.LENGTH_LONG).show();
elementListtwo.add(parameterstwo);
}
}