Question

我试图使用以下代码登录登录操作用户的好友列表：

Request request = Request.newMyFriendsRequest(ParseFacebookUtils.getSession(), new Request.GraphUserListCallback() {

@Override
public void onCompleted(List<GraphUser> users, Response response) {

    // not interesting logic
}

});

request.executeAndWait();

在我调用运行代码的函数后，我得到以下异常：

04-14 00:39:55.896  25106-25106/com.app E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.app, PID: 25106
android.os.NetworkOnMainThreadException
        at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1145)
        at com.android.org.conscrypt.OpenSSLSocketImpl$SSLOutputStream.write(OpenSSLSocketImpl.java:724)
        at java.io.BufferedOutputStream.flushInternal(BufferedOutputStream.java:185)
        at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:85)
        at com.android.okhttp.internal.http.HttpTransport.flushRequest(HttpTransport.java:107)
        at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:642)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:347)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:296)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:503)
        at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:136)
        at com.facebook.Response.fromHttpConnection(Response.java:301)
        at com.facebook.Request.executeConnectionAndWait(Request.java:1565)
        at com.facebook.Request.executeBatchAndWait(Request.java:1464)
        at com.facebook.Request.executeBatchAndWait(Request.java:1433)
        at com.facebook.Request.executeBatchAndWait(Request.java:1415)
        at com.facebook.Request.executeAndWait(Request.java:1387)
        at com.facebook.Request.executeAndWait(Request.java:1269)
        at com.app.LoginActivity.getFriends(LoginActivity.java:187)

为什么会发生这种情况，如何在不将其作为异步任务的情况下获取用户好友列表？

Answer 1

而不是

request.executeAndWait();

尝试使用

request.executeAsync();

参考here。

基本上必须从后台线程调用executeAndWait()，而可以从UI线程调用executeAsync()。

尝试检索用户的朋友时出现异常

1 个答案: