Android 在google地图上添加标记时崩溃
我有这个方法:Android 在google地图上添加标记时崩溃,android,google-maps,android-studio,Android,Google Maps,Android Studio,我有这个方法: class getuser extends AsyncTask<String, String, String> { protected String doInBackground(String... args) { int success; try { List<NameValuePair> params = new ArrayList<NameValuePair>(
class getuser extends AsyncTask<String, String, String> {
protected String doInBackground(String... args) {
int success;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("ID", ID));
JSONObject json = jsonParser.makeHttpRequest(url_user_detials, "GET", params);
Log.d("Single user Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray userObj = json.getJSONArray("user");
JSONObject user = userObj.getJSONObject(0);
String ln = user.getString("longg");
String lt = user.getString("latt");
String fn = user.getString("fname");
String lna = user.getString("lname");
String ph = user.getString("phone");
username=fn+" "+lna;
userphone=ph+"";
userlat= Double.parseDouble(lt);
userlong= Double.parseDouble(ln);
marker = new MarkerOptions().position(new LatLng(userlat, userlong));
marker.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker));
map.addMarker(marker);
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
我看不出有什么问题吗
我得到的错误是:
04-25 20:22:55.330 24534-29164/com.example.hatim.maps D/Single user Details: {"success":1,"user":[{"ID":"1223456789","fname":"lama","lname":"tat","phone":"2587598","longg":"46.739004409794056","latt":"24.729458546415405"}]}
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: Process: com.example.hatim.maps, PID: 24534
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: java.lang.RuntimeException: An error occurred while executing doInBackground()
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at android.os.AsyncTask$3.done(AsyncTask.java:309)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.FutureTask.run(FutureTask.java:242)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.lang.Thread.run(Thread.java:818)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: Caused by: java.lang.IllegalStateException: Not on the main thread
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at maps.ce.i.b(Unknown Source)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at maps.db.c.a(Unknown Source)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at maps.ei.bu.a(Unknown Source)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at com.google.android.gms.maps.internal.e$a.onTransact(:com.google.android.gms.alldynamite:167)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at android.os.Binder.transact(Binder.java:387)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at com.google.android.gms.maps.internal.IGoogleMapDelegate$zza$zza.addMarker(Unknown Source)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at com.google.android.gms.maps.GoogleMap.addMarker(Unknown Source)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at com.example.hatim.maps.SearchResutl$getuser.doInBackground(SearchResutl.java:181)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at com.example.hatim.maps.SearchResutl$getuser.doInBackground(SearchResutl.java:156)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at android.os.AsyncTask$2.call(AsyncTask.java:295)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
04-25 20:22:55.350 24534-29164/com.example.hatim.maps E/AndroidRuntime: at java.lang.Thread.run(Thread.java:818)
有人能帮我解决这个问题吗?提前感谢。您不能从后台线程更新UI。要更新UI或向映射添加标记,请使用onPostExecute方法。你也可以使用
runOnUiThread(new Runnable() {
@Override
public void run() {
// your UI updation
}
});
您正在使用AsyncTask,然后在onPostExecute方法中更新UI
class getuser extends AsyncTask<String, String, LatLng> {
@Override
protected LatLng doInBackground(String... strings) {
int success;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("ID", ID));
JSONObject json = jsonParser.makeHttpRequest(url_user_detials, "GET", params);
Log.d("Single user Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray userObj = json.getJSONArray("user");
JSONObject user = userObj.getJSONObject(0);
String ln = user.getString("longg");
String lt = user.getString("latt");
String fn = user.getString("fname");
String lna = user.getString("lname");
String ph = user.getString("phone");
username=fn+" "+lna;
userphone=ph+"";
userlat= Double.parseDouble(lt);
userlong= Double.parseDouble(ln);
return new LatLng(userlat, userlong);
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(LatLng latLng) {
if(latLng != null){
marker = new MarkerOptions().position(latLng);
marker.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker));
map.addMarker(marker);
}
}
}
class getuser扩展异步任务{
@凌驾
受保护的板条箱(串…串){
成功;
试一试{
List params=new ArrayList();
参数add(新的BasicNameValuePair(“ID”,ID));
JSONObject json=jsonParser.makeHttpRequest(url\u user\u detials,“GET”,params);
Log.d(“单用户详细信息”,json.toString());
success=json.getInt(TAG_success);
如果(成功==1){
JSONArray userObj=json.getJSONArray(“用户”);
JSONObject user=userObj.getJSONObject(0);
String ln=user.getString(“long”);
字符串lt=user.getString(“latt”);
String fn=user.getString(“fname”);
String lna=user.getString(“lname”);
String ph=user.getString(“电话”);
用户名=fn+“”+lna;
userphone=ph+“”;
userlat=Double.parseDouble(lt);
userlong=Double.parseDouble(ln);
返回新的LatLng(userlat,userlong);
}否则{
}
}捕获(JSONException e){
e、 printStackTrace();
}
返回null;
}
@凌驾
后期执行时受保护的无效(LatLng LatLng){
如果(latLng!=null){
标记=新标记选项().位置(板条);
icon(BitmapDescriptorFactory.fromResource(R.drawable.marker));
map.addMarker(marker);
}
}
}
如果我的答案对您有效,请接受。
class getuser extends AsyncTask<String, String, LatLng> {
@Override
protected LatLng doInBackground(String... strings) {
int success;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("ID", ID));
JSONObject json = jsonParser.makeHttpRequest(url_user_detials, "GET", params);
Log.d("Single user Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray userObj = json.getJSONArray("user");
JSONObject user = userObj.getJSONObject(0);
String ln = user.getString("longg");
String lt = user.getString("latt");
String fn = user.getString("fname");
String lna = user.getString("lname");
String ph = user.getString("phone");
username=fn+" "+lna;
userphone=ph+"";
userlat= Double.parseDouble(lt);
userlong= Double.parseDouble(ln);
return new LatLng(userlat, userlong);
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(LatLng latLng) {
if(latLng != null){
marker = new MarkerOptions().position(latLng);
marker.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker));
map.addMarker(marker);
}
}
}