我收到此错误：
java.lang.NullPointerException
Exception details are logged in Window > Show View > Error Log
尝试在 GUI 中编辑布局时。我不久前停止了这个项目，但我又回来了，但它似乎无法编辑。有小费吗？
错误日志说
"eclipse.buildId=M20120914-1800
java.version=1.7.0_06
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product
Error
Tue Dec 04 06:08:55 EST 2012
text_frag.xml: java.lang.NullPointerException
java.lang.NullPointerException
at com.android.layoutlib.bridge.impl.RenderAction.tearDown(RenderAction.java:250)
at com.android.layoutlib.bridge.impl.RenderAction.release(RenderAction.java:218)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:338)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:325)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderService.createRenderSession(RenderService.java:486)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1538)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(GraphicalEditorPart.java:1284)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart$ReloadListener.reloadLayoutSwt(GraphicalEditorPart.java:1768)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart$ReloadListener.access$0(GraphicalEditorPart.java:1706)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart$ReloadListener$1.run(GraphicalEditorPart.java:1700)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
"
被投诉的xml：
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff" >
<FrameLayout
android:id="@+id/container_ide"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
</FrameLayout>
<LinearLayout
android:id="@+id/linerlayout1"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_above="@+id/container_ide"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:background="@drawable/grad" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:clickable="true"
android:onClick="timer"
android:padding="6dp"
android:src="@drawable/luck" />
<TextView
android:id="@+id/pwd_statuss"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="0"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:clickable="true"
android:onClick="attachAlert"
android:padding="6dp"
android:src="@drawable/type_icon_image" />
</LinearLayout>
<EditText
android:id="@+id/editText2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/linerlayout1"
android:layout_alignParentLeft="true"
android:background="#ffffff"
android:clickable="true"
android:cursorVisible="true"
android:ems="10"
android:gravity="center_vertical|top"
android:hint="Your Message (Up to 1500 Chracters)"
android:inputType="textMultiLine"
android:padding="5dp"
android:textColor="#000000"
android:textColorHint="#585858"
android:textColorLink="#000000"
android:textCursorDrawable="@null" />
</RelativeLayout>