我需要在Realm中保存一个我已保存在Assets文件夹中的JSON。
所以我决定这样做：
private void putCountryIntoRealm()
{
Observable.create(new Observable.OnSubscribe<String>()
{
public void call(Subscriber<? super String> subscriber)
{
try
{
InputStream is = getActivity().getAssets().open("countries.json");
Reader inRead = new InputStreamReader(is);
Gson gson = new Gson();
JsonReader reader = new JsonReader(inRead);
reader.setLenient(true);
reader.beginArray();
while (reader.hasNext())
{
CountryObject ct = gson.fromJson(reader, CountryObject.class);
country.add(ct);
System.out.println("size ct: "+country.size());
subscriber.onNext(reader.toString());
}
reader.endArray();
reader.close();
subscriber.onCompleted();
}
catch (IOException e)
{
subscriber.onError(e);
}
}
}).subscribeOn(Schedulers.newThread())
.subscribe(new Subscriber<String>()
{
@Override
public void onCompleted()
{
getActivity().runOnUiThread(new Runnable()
{
@Override
public void run()
{
realm.executeTransactionAsync(new Realm.Transaction()
{
float total = 0;
float size = country.size();
String progressCount;
public void execute(Realm mRealm)
{
Countries countries = new Countries();
int i;
System.out.print("countries size: "+size);
for (i = 0; i < country.size(); i++)
{
total = (i/size * 100);
progressCount = String.format("%.0f",total);
countries.setId(country.get(i).getId());
countries.setCode(country.get(i).getCode());
countries.setName(country.get(i).getName());
countries.setContinent(country.get(i).getContinent());
countries.setKeywords(country.get(i).getKeywords());
countries.setWikipedia_link(country.get(i).getWikiLink());
mRealm.insertOrUpdate(countries);
getActivity().runOnUiThread(new Runnable()
{
@Override
public void run()
{
//Log.d("%",progressCount);
dialog = new ProgressDialog(getActivity());
dialog.setTitle("Salvataggio country in corso");
dialog.setMessage(progressCount+"%");
}
});
}
}
},new Realm.Transaction.OnSuccess() {
@Override
public void onSuccess()
{
Log.wtf("va","Ok");
if(dialog.isShowing())
dialog.dismiss();
}
}, new Realm.Transaction.OnError()
{
@Override
public void onError(Throwable error)
{
error.printStackTrace();
}
});
}
});
}
@Override
public void onError(Throwable e)
{
e.printStackTrace();
}
@Override
public void onNext(String s)
{
System.out.println(s);
}
});
}
但我有这个错误：
W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'long com.plenitudesrls.aviocalc.helpful.CountryObject.getId()' on a null object reference
事实上，我打印日志，onNext()的尺寸为245，onCompleted()为null。
为什么我有这个错误？我有另一种情况，这种情况很好。
由于
编辑：它运作良好，问题是导致崩溃的MalformedJson