获取错误（评估'input.bodyUsed'）

Question

在下面的代码中，我没有收到回复，而是获得了undefined error。

FATAL EXCEPTION: main
                                                            Process: com.nirup.fuku, PID: 10421
                                                            java.lang.IllegalStateException: The application's PagerAdapter changed the adapter's contents without calling PagerAdapter#notifyDataSetChanged! Expected adapter item count: 0, found: 1 Pager id: com.nirup.fuku:id/viewPager Pager class: class android.support.v4.view.ViewPager Problematic adapter: class com.nirup.fuku.ViewPagerAdapter
                                                                at android.support.v4.view.ViewPager.populate(ViewPager.java:1167)
                                                                at android.support.v4.view.ViewPager.populate(ViewPager.java:1116)
                                                                at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1642)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
                                                                at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
                                                                at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
                                                                at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
                                                                at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
                                                                at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
                                                                at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                at com.android.internal.policy.DecorView.onMeasure(DecorView.java:689)
                                                                at android.view.View.measure(View.java:19857)
                                                                at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2275)
                                                                at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1366)
                                                                at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1619)
                                                                at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
                                                                at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6337)
                                                                at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
                                                                at android.view.Choreographer.doCallbacks(Choreographer.java:686)
                                                                at android.view.Choreographer.doFrame(Choreographer.java:621)
                                                                at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
                                                                at android.os.Handler.handleCallback(Handler.java:751)
                                                                at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                at android.os.Looper.loop(Looper.java:154)
                                                                at android.app.ActivityThread.main(ActivityThread.java:6119)
                                                                at java.lang.reflect.Method.invoke(Native Method)
                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

Answer 1

我偶然得到了同样的例外。我正在进行重构，但未能为fetch函数提供有效的URL。

所以我建议您查看Global.user_list内的内容。