java.lang.IllegalStateException: ViewPager has not been bound.
?? ?at com.viewpagerindicator.TabPageIndicator.setCurrentItem(TabPageIndicator.java:240)
?? ?at com.viewpagerindicator.TabPageIndicator.onMeasure_Original(TabPageIndicator.java:116)
?? ?at com.viewpagerindicator.TabPageIndicator.onMeasure(TabPageIndicator.java)
?? ?at android.view.View.measure(View.java:16497)
?? ?at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
?? ?at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
?? ?at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
?? ?at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
?? ?at android.view.View.measure(View.java:16497)
?? ?at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
?? ?at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
?? ?at android.view.View.measure(View.java:16497)
?? ?at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
?? ?at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
?? ?at android.view.View.measure(View.java:16497)
?? ?at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
?? ?at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
?? ?at android.view.View.measure(View.java:16497)
?? ?at com.android.layoutlib.bridge.impl.RenderSessionImpl.measureView(RenderSessionImpl.java:617)
?? ?at com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:517)
?? ?at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:339)
?? ?at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:350)
?? ?at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:510)
?? ?at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:498)
?? ?at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:888)
?? ?at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:498)
?? ?at com.android.tools.idea.rendering.RenderTask.access$600(RenderTask.java:72)
?? ?at com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:610)
?? ?at com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:607)
?? ?at com.android.tools.idea.rendering.RenderService.runRenderAction(RenderService.java:366)
?? ?at com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:607)
?? ?at com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:629)
?? ?at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.doRender(AndroidLayoutPreviewToolWindowManager.java:652)
?? ?at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.access$1700(AndroidLayoutPreviewToolWindowManager.java:80)
?? ?at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7$1.run(AndroidLayoutPreviewToolWindowManager.java:594)
?? ?at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:152)
?? ?at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:452)
?? ?at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:402)
?? ?at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
?? ?at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:137)
?? ?at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7.run(AndroidLayoutPreviewToolWindowManager.java:589)
?? ?at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
?? ?at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
?? ?at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
?? ?at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
?? ?at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
?? ?at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
?? ?at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
?? ?at com.intellij.util.Alarm$Request$1.run(Alarm.java:351)
?? ?at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
?? ?at java.util.concurrent.FutureTask.run(FutureTask.java:266)
?? ?at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
?? ?at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
?? ?at java.lang.Thread.run(Thread.java:745)