Android 自定义适配器getView中的IndexOutOfBounds异常
我正在制作一个应用程序,它从GooglePlaces获取信息并将其显示在listview中。我目前遇到的问题是,listview显示信息,但在应用程序崩溃后不久,我在数组适配器中得到一个IndexOutOfBounds异常,它从places.get(位置)获取位置p 活动类:Android 自定义适配器getView中的IndexOutOfBounds异常,android,listview,android-arrayadapter,indexoutofboundsexception,Android,Listview,Android Arrayadapter,Indexoutofboundsexception,我正在制作一个应用程序,它从GooglePlaces获取信息并将其显示在listview中。我目前遇到的问题是,listview显示信息,但在应用程序崩溃后不久,我在数组适配器中得到一个IndexOutOfBounds异常,它从places.get(位置)获取位置p 活动类: public class NearbyLocationsActivity extends BaseActivity implements AsyncDelegate { private Location mLastLoca
public class NearbyLocationsActivity extends BaseActivity implements AsyncDelegate {
private Location mLastLocation;
private GetLocations nearbyLocations;
private PlaceAdapter adapter;
private ArrayList<Place> nearbyPlaces;
private double mLat;
private double mLong;
private ListView locationsList;
public Spinner typesSpinner;
private BroadcastReceiver broadcastReceiver;
private String radius = "10000";
private int selectedSpinnerIndex;
private String [] types = {"everything", "restaurant", "bar", "museum", "night_club", "cafe", "movie_theater"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nearby_locations);
locationsList = (ListView) findViewById(R.id.locations_list);
typesSpinner = (Spinner) findViewById(R.id.type_spinner);
nearbyPlaces = new ArrayList();
adapter = new PlaceAdapter(getApplicationContext(), nearbyPlaces);
locationsList.setAdapter(adapter);
if(!runtimePermissions()) {
enableService();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
return true;
}
public void enableService() {
Intent i = new Intent(getApplicationContext(), LocationService.class);
startService(i);
}
private boolean runtimePermissions() {
if (Build.VERSION.SDK_INT >= 23 && ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED
&& ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION}, 100);
return true;
}
return false;
}
@Override
public void onResume() {
super.onResume();
if (broadcastReceiver == null) {
broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
mLastLocation = (Location) intent.getExtras().get("coordinates");
mLat = mLastLocation.getLatitude();
mLong = mLastLocation.getLongitude();
nearbyLocations = new GetLocations(NearbyLocationsActivity.this);
nearbyLocations.execute();
}
};
registerReceiver(broadcastReceiver, new IntentFilter("location_updates"));
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (broadcastReceiver != null) {
unregisterReceiver(broadcastReceiver);
}
}
@Override
public void onStop() {
Intent i = new Intent(getApplicationContext(), LocationService.class);
stopService(i);
super.onStop();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 100) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
enableService();
} else {
runtimePermissions();
}
}
}
@Override
public void asyncComplete(boolean success) {
adapter.notifyDataSetChanged();
typesSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
selectedSpinnerIndex = typesSpinner.getSelectedItemPosition();
new GetLocations(NearbyLocationsActivity.this).execute();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
selectedSpinnerIndex = 0;
}
});
locationsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Place p = adapter.getItem(position);
Intent intent = new Intent(getApplicationContext(), CreateEventActivity.class);
intent.putExtra("selectedPlace", p);
startActivity(intent);
}
});
}
public class GetLocations extends AsyncTask<Void, Void, Void> {
private AsyncDelegate delegate;
public GetLocations (AsyncDelegate delegate){
this.delegate = delegate;
}
@Override
protected Void doInBackground(Void... params) {
nearbyPlaces.clear();
StringBuilder sb = new StringBuilder();
String http = "https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=" + mLat + "," + mLong +
"&radius=10000";
if (selectedSpinnerIndex != 0) {
http += "&types=" + types[selectedSpinnerIndex];
}
http += "&key=AIzaSyDFb37i6VGPj2EG6L7dLO5H7tDhLCqCW2k";
HttpURLConnection urlConnection;
try {
URL url = new URL(http);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
}
JSONObject jsonObject = new JSONObject(sb.toString());
JSONArray array = jsonObject.getJSONArray("results");
for (int i = 0; i < array.length(); i++) {
JSONObject placeLine = (JSONObject) array.get(i);
Place place = new Place();
JSONObject geometryLine = placeLine.getJSONObject("geometry");
JSONObject locationLine = geometryLine.getJSONObject("location");
Place.Location location = new Place.Location();
location.setLat(locationLine.getDouble("lat"));
location.setLon(locationLine.getDouble("lng"));
place.setLocation(location);
place.setIcon(placeLine.getString("icon"));
place.setPlaceId(placeLine.getString("place_id"));
String detailsHttp = "https://maps.googleapis.com/maps/api/place/details/json?key=AIzaSyDFb37i6VGPj2EG6L7dLO5H7tDhLCqCW2k&placeid=" + place.getPlaceId();
getPlaceDetails(detailsHttp, place);
place.setName(placeLine.getString("name"));
/*JSONArray typesJson = new JSONArray("types");
String [] types = new String[typesJson.length()];
for (int a = 0; i < typesJson.length(); i++) {
types[a] = typesJson.getString(a);
}
place.setTypes(types);*/
place.setVicinity(placeLine.getString("vicinity"));
try {
place.setRating(placeLine.getInt("rating"));
} catch (JSONException je) {
place.setRating(-1);
}
try {
JSONArray photosJson = placeLine.getJSONArray("photos");
//for (int k = 0; i < photosJson.length(); i++) {
JSONObject photoLine = (JSONObject) photosJson.get(0);
String photoHttp = "https://maps.googleapis.com/maps/api/place/photo?maxwidth=400&" +
"photoreference=" + photoLine.getString("photo_reference") + "&key=AIzaSyDFb37i6VGPj2EG6L7dLO5H7tDhLCqCW2k";
place.setPhotoHttp(photoHttp);
//place.addPhotoHttp(photoHttp);
//}
} catch (JSONException je) {
place.setPhotoHttp(null);
}
nearbyPlaces.add(place);
}
} catch(MalformedURLException mue){
System.out.println("A malformed URL exception occurred. " + mue.getMessage());
} catch(IOException ioe){
System.out.println("A input/output exception occurred. " + ioe.getMessage());
} catch(JSONException je){
System.out.println("A JSON error occurred. " + je.getMessage());
}
return null;
}
public void getPlaceDetails(String http, Place p) {
StringBuilder sb = new StringBuilder();
HttpURLConnection urlConnection;
try {
URL url = new URL(http);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
}
JSONObject jsonObject = new JSONObject(sb.toString());
JSONObject resultsJson = jsonObject.getJSONObject("result");
String address = resultsJson.getString("formatted_address");
p.setAddress(address);
} catch(MalformedURLException mue){
System.out.println("A malformed URL exception occurred. " + mue.getMessage());
} catch(IOException ioe){
System.out.println("A input/output exception occurred. " + ioe.getMessage());
} catch(JSONException je){
System.out.println("A JSON error occurred. " + je.getMessage());
}
}
@Override
protected void onPostExecute(Void aVoid) {
// Thread is finished downloading and parsing JSON, asyncComplete is
delegate.asyncComplete(true);
}
}}
公共类NearByLocationActivity扩展BaseActivity实现AsyncDelegate{
私人场所;
附近的私人场所;
私人配售适配器;
附近的私人ArrayList;
私人双mLat;
私人双米隆;
私有列表视图位置列表;
公共旋转器类型旋转器;
专用广播接收机;
专用字符串半径=“10000”;
私有int选择喷丝头索引;
私人字符串[]类型={“一切”、“餐厅”、“酒吧”、“博物馆”、“夜总会”、“咖啡馆”、“电影院”};
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_附近的位置);
locationsList=(ListView)findViewById(R.id.locations\u列表);
typesSpinner=(微调器)findViewById(R.id.type\u微调器);
nearbyPlaces=newarraylist();
adapter=newplaceadapter(getApplicationContext(),nearbyPlaces);
位置列表设置适配器(适配器);
如果(!runtimePermissions()){
enableService();
}
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
super.onCreateOptions菜单(菜单);
返回true;
}
公共void启用服务(){
Intent i=新Intent(getApplicationContext(),LocationService.class);
startService(一);
}
私有布尔运行时权限(){
if(Build.VERSION.SDK\u INT>=23&&ContextCompat.checkSelfPermission(这是Manifest.permission.ACCESS\u FINE\u位置)
!=已授予PackageManager.PERMISSION\u权限
&&ContextCompat.checkSelfPermission(这是Manifest.permission.ACCESS\u位置)
!=PackageManager.权限(已授予){
requestPermissions(新字符串[]{Manifest.permission.ACCESS\u FINE\u位置,
Manifest.permission.ACCESS\u\u LOCATION},100);
返回true;
}
返回false;
}
@凌驾
恢复时公开作废(){
super.onResume();
if(broadcastReceiver==null){
broadcastReceiver=新的broadcastReceiver(){
@凌驾
公共void onReceive(上下文、意图){
mLastLocation=(位置)intent.getExtras().get(“坐标”);
mLat=mLastLocation.getLatitude();
mLong=mLastLocation.getLongitude();
nearbyLocations=新的GetLocations(NearbyLocationsActivity.this);
nearbyLocations.execute();
}
};
registerReceiver(广播接收器、新意向过滤器(“位置更新”);
}
}
@凌驾
公共空间{
super.ondestory();
if(broadcastReceiver!=null){
未注册接收器(广播接收器);
}
}
@凌驾
公共void onStop(){
Intent i=新Intent(getApplicationContext(),LocationService.class);
停止服务(一);
super.onStop();
}
@凌驾
public void onRequestPermissionsResult(int-requestCode、字符串[]权限、int[]grantResults){
super.onRequestPermissionsResult(请求代码、权限、授权结果);
if(requestCode==100){
if(授予的grantResults[0]==PackageManager.PERMISSION&&grantResults[1]==授予的PackageManager.PERMISSION){
enableService();
}否则{
运行时权限();
}
}
}
@凌驾
public void异步完成(布尔成功){
adapter.notifyDataSetChanged();
typesSpinner.setOnItemSelectedListener(新的AdapterView.OnItemSelectedListener(){
@凌驾
已选择公共视图(AdapterView父视图、视图视图、整型位置、长id){
selectedSpinnerIndex=typesSpinner.getSelectedItemPosition();
新的GetLocations(NearbyLocationsActivity.this).execute();
}
@凌驾
未选择公共无效(AdapterView父级){
selectedSpinnerIndex=0;
}
});
locationsList.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
放置p=适配器.getItem(位置);
Intent Intent=new Intent(getApplicationContext(),CreateEventActivity.class);
意向。额外(“选定地点”,p);
星触觉(意向);
}
});
}
公共类GetLocations扩展异步任务{
私人代表;
公共GetLocations(异步委托){
this.delegate=委托;
}
@凌驾
受保护的Void doInBackground(Void…参数){
附近的地方。清除();
StringBuilder sb=新的StringBuilder();
字符串http=”https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=“+mLat+”,“+mLong+
“&radius=10000”;
如果(selectedSpinnerIndex!=0){
http+=“&types=“+types[selectedSpinnerIndex];
}
http+=“&key=AIzaSyDFb37i6VGPj2EG6L7dLO5H7tDhLCqCW2k”;
HttpURLConnection-urlConnection;
试一试{
URL=新URL(http);
urlConnection=(HttpURLConnection)url.openConnection();
urlConnection.setRequestMethod(“GET”);
if(urlConnection.getResponseCode()==HttpURLConnection.HTTP\u确定){
InputStream in=new BufferedInputStream(urlConnection.getInputStream());
BufferedReader reader=新的BufferedReader(新的InputStreamReader(in));
弦线;
而((line=reader.readLine())!=null){
某人附加(行);
}
}
JSONObject JSONObject
public class PlaceAdapter extends ArrayAdapter<Place> {
private Context mContext;
private ArrayList<Place> places;
public PlaceAdapter(Context context, ArrayList<Place> nearbyPlaces) {
super(context, R.layout.place_list_item, nearbyPlaces);
mContext = context;
this.places = nearbyPlaces;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.place_list_item, null);
final Place p = places.get(position);
TextView placeName = (TextView) view.findViewById(R.id.place_name);
placeName.setText(p.getName());
TextView placeAddress = (TextView) view.findViewById(R.id.place_address);
placeAddress.setText(p.getAddress());
ImageView placeImage = (ImageView) view.findViewById(R.id.place_picture);
if (p.getPhotoHttp() != null) {
Picasso.with(mContext).load(p.getPhotoHttp()).into(placeImage);
} else {
Picasso.with(mContext).load(p.getIcon()).into(placeImage);
}
return view;
}}
@Override
protected Void doInBackground(Void... params) {
nearbyPlaces.clear();
..............
.................
try {
.............
...................
for (int i = 0; i < array.length(); i++) {
..............
.................
nearbyPlaces.add(place);
adapter.notifyDataSetChanged(); // Update ListView
}
} catch(MalformedURLException mue){
System.out.println("A malformed URL exception occurred. " + mue.getMessage());
} catch(IOException ioe){
System.out.println("A input/output exception occurred. " + ioe.getMessage());
} catch(JSONException je){
System.out.println("A JSON error occurred. " + je.getMessage());
}
return null;
}