Android开发--一些错误集合

把最近做android开发遇到的一些错误整理到这里

1.ListView与SimpleCursorAdapter出现colunm _id does not exists错误

今天使用sqlite绑定数据到listview时出现了java.lang.IllegalArgumentException: column '_id' does not exist，找了很久才发现查询出来的数据必须有_id这列才不会出错， 于是把查询语句改为select  id as _id,phoneNumber from info即可（我自己定义了一个id），就可以了。

其中，我曾试着把我数据库里面定义的id改为_id（查询语句为 select  * from info或者select   _id,phoneNumber from info ）或者把id的定义删除（ select  * from info ） ，这种方法也行不通。

这个有个外文的链接

http://stackoverflow.com/questions/3359414/android-column-id-does-not-exist

2.更新Eclipse出现以下错误

An error occurred while collecting items to be installed
session context was:(profile=profile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: osgi.bundle,com.android.ide.eclipse.adt,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.adt.package,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.base,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.ddms,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.gldebugger,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.hierarchyviewer,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.ndk,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.traceview,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,overlay.com.android.ide.eclipse.adt.overlay,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.adt,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.ddms,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.gldebugger,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.hierarchyviewer,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.ndk,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.traceview,21.1.0.v201302060044-569685

http://stackoverflow.com/questions/15376948/updating-eclipse-sdk-error

我按照上面连接中提供的方案试一试，发现不行，然后再网上找了不少资料，发现其中有个原因会导致这个错误，即无法连接到更新服务器，既然无法连接，有可能是服务器出了问题，也有可能连接被电脑里面的防火墙或者杀软阻止了， 于是，我尝试把系统防火墙关闭，杀软关闭，结果更新成功。