我在我的Adnroid项目中实现了FloatingActionMenu但是在我的布局中没有显示Ui但是如果我运行我的应用程序它在真实设备中显示 在布局设计时我得到了以下错误
java.lang.NullPointerException
at android.view.ViewConfiguration.get(ViewConfiguration.java:364)
at android.view.View.<init>(View.java:3788)
at android.view.View.<init>(View.java:3892)
at android.widget.TextView.<init>(TextView.java:677)
at android.widget.TextView.<init>(TextView.java:671)
at android.widget.TextView.<init>(TextView.java:667)
at android.widget.TextView.<init>(TextView.java:663)
at com.github.clans.fab.Label.<init>(Label.java:52)
at com.github.clans.fab.FloatingActionMenu.addLabel(FloatingActionMenu.java:481)
at com.github.clans.fab.FloatingActionMenu.createLabels(FloatingActionMenu.java:463)
at com.github.clans.fab.FloatingActionMenu.onFinishInflate(FloatingActionMenu.java:451)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:844)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:811)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:838)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:811)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:229)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:426)
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:967)
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:359)
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:142)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:127)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7.run(AndroidLayoutPreviewToolWindowManager.java:589)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:337)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:327)
at com.intellij.util.ui.update.MergingUpdateQueue$3.run(MergingUpdateQueue.java:271)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:286)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:244)
at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:234)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:352)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
下面我提到了我的布局：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#00000000">
<com.github.clans.fab.FloatingActionMenu
android:id="@+id/menu_down"
android:layout_width="wrap_content"
android:layout_height="37dp"
android:layout_alignParentLeft="true"
android:elevation="6dp"
fab:menu_labels_ellipsize="end"
fab:menu_labels_singleLine="true"
fab:menu_labels_position="right"
fab:menu_fab_size="mini"
fab:menu_openDirection="down">
<com.github.clans.fab.FloatingActionButton
android:id="@+id/fab1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/infofab"
fab:fab_size="mini"
fab:fab_label="Info" />
<com.github.clans.fab.FloatingActionButton
android:id="@+id/fab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/sharefab"
fab:fab_size="mini"
fab:fab_label="Share" />
<com.github.clans.fab.FloatingActionButton
android:id="@+id/fab3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/favfab"
fab:fab_size="mini"
fab:fab_label="Favourite"
/>
</com.github.clans.fab.FloatingActionMenu>
<!--<TextView
android:id="@+id/transparent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="visible"
android:background="#80000000"/>-->
</LinearLayout>