1
Eclipse에서 Android 용으로 개발하는 법을 배우기 시작했습니다. UI 개발에 대한 자습서를 살펴보고 Eclipse에서 오류 로그가 NullPointerExceptions를 로깅하고 있음을 확인했습니다.Eclipse에서 Android 레이아웃을 편집 할 때 NullPointerException이 발생했습니다.
현재 레이블, 버튼 및 텍스트 상자가있는 단일 레이아웃이 있습니다. 버튼 선택과 같은 WYSIWYG UI 편집기와 상호 작용할 때마다 오류 로그가 이러한 예외 사항으로 가득 차게됩니다. 다음은 예외 중 하나에 대한 세부 정보입니다.
eclipse.buildId=v22.3.0-887826
java.version=1.7.0_51
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product com.android.ide.eclipse.adt.package.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product com.android.ide.eclipse.adt.package.product
Error
Sat Mar 01 19:32:57 PST 2014
java.lang.NullPointerException
at com.android.layoutlib.bridge.impl.RenderSessionImpl.getDefaultProperties(RenderSessionImpl.java:1476)
at com.android.layoutlib.bridge.BridgeRenderSession.getDefaultProperties(BridgeRenderSession.java:68)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.ViewHierarchy.getDefaultProperties(ViewHierarchy.java:710)
at com.android.ide.eclipse.adt.internal.editors.layout.properties.XmlProperty.getStringValue(XmlProperty.java:209)
at com.android.ide.eclipse.adt.internal.editors.layout.properties.XmlProperty.getValue(XmlProperty.java:221)
at com.android.ide.eclipse.adt.internal.editors.layout.properties.XmlPropertyEditor.getText(XmlPropertyEditor.java:116)
at com.android.ide.eclipse.adt.internal.editors.layout.properties.XmlPropertyEditor.paint(XmlPropertyEditor.java:131)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable.drawProperty(PropertyTable.java:1309)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable.drawContent(PropertyTable.java:1151)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable.handlePaint(PropertyTable.java:1094)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable.access$200(PropertyTable.java:64)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable$3.handleEvent(PropertyTable.java:187)
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.Composite.WM_PRINTCLIENT(Composite.java:1639)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4590)
at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4976)
at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
at org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2440)
at org.eclipse.swt.widgets.Button.callWindowProc(Button.java:343)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4623)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4989)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2546)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3756)
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)
여기에 아마 문제가 "ADT 번들"안에 내 레이아웃
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".StatusActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="25dp"
android:layout_weight="0.7"
android:text="Button" />
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="19dp"
android:layout_weight="0.5"
android:ems="10"
android:inputType="textMultiLine" />
</LinearLayout>
XML 코드에 문제가 없기 때문에 일부 자바 코드를 게시하십시오. – Ogen
이 시점에서 실제로 Java가 없습니다. 이 프로젝트는 onCreate()와 onCreateOptionsMenu()의 메뉴에서 레이아웃을 설정하는 프로젝트로 생성 된 하나의 액티비티를 가지고 있습니다. –
사실 저는 Git을 동시에 배우려고 노력하고 있습니다. Github 저장소. 여기 있습니다 : https://github.com/aireq/android-bootcamp/tree/master/Yamba –