我试图在android中调用Yelp API。我正在使用ASyncTaskLoader，但我仍然无法在模拟器上连接。我之前从未使用过任务加载器，所以我确定那里有＃s; s我缺少一些基本的东西，但我已经在这几天了，我似乎无法弄明白。
我还没有实现任何改变ui的东西，因为我只是试图让darn API连接正常工作。
public class YelpActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_yelp);
yelpLoader load = new yelpLoader(getApplicationContext());
load.loadInBackground();
}
}
这是我的任务加载器。
class yelpLoader extends AsyncTaskLoader {
static YelpAPI test = new YelpAPI();
static String CONSUMER_KEY = "";
static String CONSUMER_SECRET = "";
static String TOKEN = "";
static String TOKEN_SECRET = "";
public yelpLoader(Context context) {
super(context);
}
public String loadInBackground() {
String result = "";
YelpAPI.YelpAPICLI yelpApiCli = new YelpAPI.YelpAPICLI();
new JCommander(yelpApiCli);
YelpAPI yelpApi = new YelpAPI(CONSUMER_KEY, CONSUMER_SECRET, TOKEN, TOKEN_SECRET);
test.queryAPI(yelpApi, yelpApiCli);
return null;
}
}
错误日志：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: tastr.tastr, PID: 4087
java.lang.ExceptionInInitializerError
at tastr.tastr.YelpActivity.onCreate(YelpActivity.java:44)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: org.scribe.exceptions.OAuthConnectionException: There was a problem while creating a connection to the remote service.
at org.scribe.model.Request.send(Request.java:70)
at org.scribe.model.Request.send(Request.java:76)
at tastr.tastr.YelpAPI.sendRequestAndGetResponse(YelpAPI.java:129)
at tastr.tastr.YelpAPI.searchForBusinessesByLocation(YelpAPI.java:87)
at tastr.tastr.YelpAPI.queryAPI(YelpAPI.java:143)
at tastr.tastr.YelpAPI.<init>(YelpAPI.java:189)
at tastr.tastr.FooLoader.<clinit>(FooLoader.java:11)
at tastr.tastr.YelpActivity.onCreate(YelpActivity.java:44)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
at java.net.InetAddress.lookupHostByName(InetAddress.java:431)
at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
at java.net.InetAddress.getAllByName(InetAddress.java:215)
at com.android.okhttp.internal.Network$1.resolveInetAddresses(Network.java:29)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:188)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:157)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:100)
at com.android.okhttp.internal.http.HttpEngine.createNextConnection(HttpEngine.java:357)
at com.android.okhttp.internal.http.HttpEngine.nextConnection(HttpEngine.java:340)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:330)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:248)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:433)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:114)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java)
at org.scribe.model.Response.<init>(Response.java:29)
at org.scribe.model.Request.doSend(Request.java:117)
at org.scribe.model.Request.send(Request.java:66)
at org.scribe.model.Request.send(Request.java:76)
at tastr.tastr.YelpAPI.sendRequestAndGetResponse(YelpAPI.java:129)
at tastr.tastr.YelpAPI.searchForBusinessesByLocation(YelpAPI.java:87)
at tastr.tastr.YelpAPI.queryAPI(YelpAPI.java:143)
at tastr.tastr.YelpAPI.<init>(YelpAPI.java:189)
at tastr.tastr.FooLoader.<clinit>(FooLoader.java:11)
at tastr.tastr.YelpActivity.onCreate(YelpActivity.java:44)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
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)
Application terminated.