我做了这个项目：
public class MainActivity
extends ActionBarActivity {
private Realm realm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RealmConfiguration defaultConfig = new RealmConfiguration.Builder().deleteRealmIfMigrationNeeded().build();
realm = Realm.getInstance(defaultConfig);
/**
* Set up Android CardView/RecycleView
*/
RecyclerView mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
final CardAdapter mCardAdapter = new CardAdapter();
mRecyclerView.setAdapter(mCardAdapter);
/**
* START: button set up
*/
final Button bClear = (Button) findViewById(R.id.button_clear);
Button bFetch = (Button) findViewById(R.id.button_fetch);
bClear.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mCardAdapter.clear();
}
});
bFetch.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Retrofit retrofit = new Retrofit.Builder()
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.baseUrl(GithubService.SERVICE_ENDPOINT).build();
GithubService service = retrofit.create(GithubService.class);
service.getAirport()
.subscribeOn(Schedulers.newThread())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Subscriber<List<Airport>>() {
List<Airport> airps = new ArrayList<Airport>();
@Override
public void onCompleted() {
for(final Airport air : airps) {
realm.executeTransactionAsync(new Realm.Transaction() {
@Override
public void execute(Realm mRealm) {
AirportR airport = mRealm.createObject(AirportR.class);
airport.setId(air.getId());
}
}, new Realm.Transaction.OnSuccess() {
@Override
public void onSuccess() {
Log.wtf("ok", "ok");
}
}, new Realm.Transaction.OnError() {
@Override
public void onError(Throwable error) {
Log.e("ok", "non vaaa");
}
});
}
}
@Override
public void onError(Throwable e) {
e.printStackTrace();
}
@Override
public void onNext(List<Airport> airports) {
airps = airports;
}
});
}
});
/**
* END: button set up
*/
}
我想在我的离线领域数据库中保存所有机场。当我启动它时，我收到此错误：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.githubdemo.app, PID: 30527
Theme: themes:{}
java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:62)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: rx.exceptions.OnCompletedFailedException: Task java.util.concurrent.FutureTask@d76273a rejected from io.realm.internal.async.RealmThreadPoolExecutor@c1e8feb[Running, pool size = 9, active threads = 9, queued tasks = 100, completed tasks = 0]
at rx.observers.SafeSubscriber.onCompleted(SafeSubscriber.java:90)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:262)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:199)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@d76273a rejected from io.realm.internal.async.RealmThreadPoolExecutor@c1e8feb[Running, pool size = 9, active threads = 9, queued tasks = 100, completed tasks = 0]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2014)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:794)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1340)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:82)
at io.realm.internal.async.RealmThreadPoolExecutor.submitTransaction(RealmThreadPoolExecutor.java:71)
at io.realm.Realm.executeTransactionAsync(Realm.java:1340)
at app.activity.MainActivity$2$1.onCompleted(MainActivity.java:88)
at rx.observers.SafeSubscriber.onCompleted(SafeSubscriber.java:84)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:262)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:199)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
我该如何解决？
还有另一种方法可以使用rxJava来保存机场？
由于
答案 0 :(得分：1)
而不是为您从API收到的每个Airport实例排队异步交易 - for batch inserts, you should consider using 1 asynchronous transaction instead, and the insert API。
所以这个：
for(final Airport air : airps) {
realm.executeTransactionAsync(new Realm.Transaction() {
@Override
public void execute(Realm mRealm) {
AirportR airport = mRealm.createObject(AirportR.class);
airport.setId(air.getId());
}
}, new Realm.Transaction.OnSuccess() {
@Override
public void onSuccess() {
Log.wtf("ok", "ok");
}
}, new Realm.Transaction.OnError() {
@Override
public void onError(Throwable error) {
Log.e("ok", "non vaaa");
}
});
}
应该是这样的：
realm.executeTransactionAsync(new Realm.Transaction() {
@Override
public void execute(Realm realm) {
AirportR airport = new AirportR();
for(final Airport air : airps) {
airport.setId(air.getId());
realm.insertOrUpdate(airport);
}
}, new Realm.Transaction.OnSuccess() {
@Override
public void onSuccess() {
Log.wtf("ok", "ok");
}
}, new Realm.Transaction.OnError() {
@Override
public void onError(Throwable error) {
Log.e("ok", "non vaaa");
}
});
}