我正在开发一个Android应用程序.它有多个线程读取和写入Android SQLite数据库.我收到以下错误:
SQLiteException:错误代码5:数据库已锁定
我理解SQLite会在插入/更新时锁定整个数据库,但在我运行select查询时插入/更新时似乎只会发生这些错误.select迭代返回一个游标,当我迭代它时,它会被打开很多(几次几秒).如果select查询没有运行,我永远不会得到锁.我很惊讶select可以锁定数据库.这是可能的,还是还有其他事情发生？
什么是避免这种锁定的最佳方法？
我刚刚在eclipse(Galileo)中设置了PDT,但在打开任何.php文件时会收到以下错误.
有谁知道我怎么解决这个问题？
提前致谢
TAO.
PHP文件:
<?php
echo "test"
?>
错误:
Could not open the editor: Editor could not be initialized.
细节:
java.lang.AbstractMethodError: org.eclipse.php.internal.core.compiler.ast.parser.PHPSourceParserFactory.parse(Lorg/eclipse/dltk/compiler/env/IModuleSource;Lorg/eclipse/dltk/compiler/problem/IProblemReporter;)Lorg/eclipse/dltk/ast/parser/IModuleDeclaration;
at org.eclipse.dltk.core.SourceParserUtil.parse(SourceParserUtil.java:137)
at org.eclipse.dltk.core.SourceParserUtil.getModuleDeclaration(SourceParserUtil.java:197)
at org.eclipse.dltk.core.SourceParserUtil.getModuleDeclaration(SourceParserUtil.java:183)
at org.eclipse.dltk.core.SourceParserUtil.getModuleDeclaration(SourceParserUtil.java:174)
at org.eclipse.dltk.core.AbstractSourceElementParser.parse(AbstractSourceElementParser.java:42)
at org.eclipse.dltk.core.AbstractSourceElementParser.parseSourceModule(AbstractSourceElementParser.java:26)
at org.eclipse.dltk.internal.core.AbstractSourceModule.buildStructure(AbstractSourceModule.java:507)
at org.eclipse.dltk.internal.core.Openable.generateInfos(Openable.java:185)
at org.eclipse.dltk.internal.core.ModelElement.openWhenClosed(ModelElement.java:182)
at org.eclipse.dltk.internal.core.BecomeWorkingCopyOperation.executeOperation(BecomeWorkingCopyOperation.java:45)
at org.eclipse.dltk.internal.core.ModelOperation.run(ModelOperation.java:698)
at org.eclipse.dltk.internal.core.ModelOperation.runOperation(ModelOperation.java:764)
at org.eclipse.dltk.internal.core.SourceModule.becomeWorkingCopy(SourceModule.java:68)
at org.eclipse.dltk.internal.ui.editor.SourceModuleDocumentProvider.createFileInfo(SourceModuleDocumentProvider.java:1251)
at org.eclipse.ui.editors.text.TextFileDocumentProvider.connect(TextFileDocumentProvider.java:478)
at org.eclipse.dltk.internal.ui.editor.SourceModuleDocumentProvider.connect(SourceModuleDocumentProvider.java:1484)
at org.eclipse.ui.texteditor.AbstractTextEditor.doSetInput(AbstractTextEditor.java:4134)
at org.eclipse.ui.texteditor.StatusTextEditor.doSetInput(StatusTextEditor.java:203)
at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.doSetInput(AbstractDecoratedTextEditor.java:1413)
at org.eclipse.ui.editors.text.TextEditor.doSetInput(TextEditor.java:166)
at org.eclipse.wst.sse.ui.StructuredTextEditor.doSetInput(StructuredTextEditor.java:1712)
at org.eclipse.php.internal.ui.editor.PHPStructuredEditor.doSetInput(PHPStructuredEditor.java:2208)
at org.eclipse.ui.texteditor.AbstractTextEditor$19.run(AbstractTextEditor.java:3115)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:759)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:756)
at …当我从eclipse在手机上运行我的应用程序时,它总是在调试中运行.这种情况最近才开始发生.我想我必须无意中改变偏好或某些东西,但无法解决问题.有谁知道如何将其切换回来,以便我可以在没有调试的情况下运行？
提前致谢
TAO
我的Android应用程序崩溃,出现以下错误:
ERROR/dalvikvm(7051): HeapWorker is wedged: 10037ms spent inside Lcom/android/internal/os/BinderInternal$GcWatcher;.finalize()V
所以看起来GCWatcher要花费大于10秒来完成.
当AsyncTask通过http从远程服务器检索/传递数据时会发生这种情况.它并不总是抛出这个错误,它只是最近才开始发生...以前这个工作正常,应用程序代码没有变化.
任何人都知道导致此错误的原因以及如何阻止它？