Android Studio 运行eclispe 写的Android项目，实例化异常

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.as/com.example.as.activity.InfoManage}:
java.lang.NullPointerException: Attempt to invoke virtual method ‘android.database.sqlite.SQLiteDatabase android.content.Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase$CursorFactory, android.database.DatabaseErrorHandler)’ on a null object reference

是因为在全局变量声明了

OutaccountDAO outaccountDAO =  new OutaccountDAO(InfoManage.this);// 创建OutaccountDAO对象
InaccountDAO inaccountDAO = new InaccountDAO(InfoManage.this);// 创建InaccountDAO对象

应修改为：

全局变量里改为：

OutaccountDAO outaccountDAO = null;
InaccountDAO inaccountDAO = null;

在onCreate方法里添加：

	outaccountDAO = new OutaccountDAO(InfoManage.this);// 创建OutaccountDAO对象
	inaccountDAO = new InaccountDAO(InfoManage.this);// 创建InaccountDAO对象

问题就解决了