java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.as/com.example.

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)