StackOverflow2013

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POAndroid: NullPointerException
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copied!<p>I'm getting this error while I try to view my layouts in the graphical layout in ADT. The project runs fine and there were no problems with this at first. In addition,if I start a new project and open a layout xml file in the graphical layout its loading it fine. these are the xml file codes:</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:text="@string/tot" android:textSize="40sp" /> <Button android:id="@+id/btn_Add" android:layout_width="450sp" android:layout_height="wrap_content" android:gravity="center" android:text="@string/add" /> <Button android:id="@+id/btn_Sub" android:layout_width="450sp" android:layout_height="wrap_content" android:layout_marginTop="14dp" android:gravity="center" android:text="@string/sub" /> </LinearLayout> </code></pre> <hr> <p>Logcat:</p> <pre><code>java.lang.NullPointerException at android.graphics.Bitmap_Delegate.nativeWidth(Bitmap_Delegate.java:296) at android.graphics.Bitmap.nativeWidth(Bitmap.java) at android.graphics.Bitmap.getWidth(Bitmap.java:917) at android.graphics.Bitmap.getScaledWidth(Bitmap.java:965) at android.graphics.drawable.BitmapDrawable.computeBitmapSize(BitmapDrawable.java:183) at android.graphics.drawable.BitmapDrawable.setBitmap(BitmapDrawable.java:191) at android.graphics.drawable.BitmapDrawable.<init>(BitmapDrawable.java:604) at android.graphics.drawable.BitmapDrawable.<init>(BitmapDrawable.java:114) at com.android.layoutlib.bridge.impl.ResourceHelper.getDrawable(ResourceHelper.java:239) at com.android.layoutlib.bridge.bars.CustomBar.loadIcon(CustomBar.java:212) at com.android.layoutlib.bridge.bars.CustomBar.loadIconById(CustomBar.java:204) at com.android.layoutlib.bridge.bars.CustomBar.loadIconById(CustomBar.java:171) at com.android.layoutlib.bridge.bars.FakeActionBar.<init>(FakeActionBar.java:38) at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:347) at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:336) at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:333) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderService.createRenderSession(RenderService.java:451) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1545) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(GraphicalEditorPart.java:1302) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.activated(GraphicalEditorPart.java:1059) at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditorDelegate.delegatePageChange(LayoutEditorDelegate.java:686) at com.android.ide.eclipse.adt.internal.editors.common.CommonXmlEditor.pageChange(CommonXmlEditor.java:360) at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:292) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:774) at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3028) at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1749) at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:278) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1053) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:942) 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) </code></pre>

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