从HashMap获取数据到SQLite数据库

在我的应用程序中，我从服务器中检索记录。记录在一个xml文件中。我能够下载文件并解析它，没有任何问题。我将结果存储在HashMap中，我希望能够将这些结果放入我的应用程序的SQLite数据库中。从HashMap获取数据到SQLite数据库

下面是HashMap中

  ArrayList<HashMap<String, String>> StudentDownloads = new ArrayList<HashMap<String, String>>(); 

     String xml = XMLfunctions.getXML(target); 


     Document doc = XMLfunctions.XMLfromString(xml); 
     if(XMLfunctions.XMLfromString(xml)==null){ 
      Toast.makeText(this, "Badly Formed File", Toast.LENGTH_LONG).show(); 
      finish(); 
     }   

     int numResults = XMLfunctions.numResults(doc); 
     if((numResults <= 0)){ 
      Toast.makeText(this, "There Were No Student Results To Show", Toast.LENGTH_LONG).show(); 
      finish(); 
     } 

     NodeList nodes = doc.getElementsByTagName("Students"); 

     for (int i = 0; i < nodes.getLength(); i++) {       
      HashMap<String, String> map = new HashMap<String, String>();  

      Element e = (Element)nodes.item(i); 
      map.put("Student Id", "Student Id " + XMLfunctions.getValue(e, "StudentId")); 
      map.put("Student Type", "Student Type" + XMLfunctions.getValue(e, "StudentType")); 
      map.put("Student Location", "Student Location" + XMLfunctions.getValue(e, "StudentLocation")); 
      map.put("Student Mother", "Student Mother" + XMLfunctions.getValue(e, "StudentMother")); 
      StudentDownloads.add(map);}   
     };

现在，在我的应用程序的代码，我已经创建了一个使用了一个名为StudentRecord类，在我输入表单数据输入表单我使用这个功能来更新文件

 private void addStudent(StudentRecord newRecord){ 
      mDB.beginTransaction(); 
      try { 

        ContentValues StudentRecordToAdd = new ContentValues(); 
        StudentRecordToAdd.put(Students.STUDENT_ID, newRecord.getStudentName()); 
        StudentRecordToAdd.put(Student.STUDENT_TYPE, newRecord.getStudentType()); 
        StudentRecordToAdd.put(Student.STUDENT_LOCATION, newRecord.getStudentLocation()); 
        StudentRecordToAdd.put(Student.STUDENT_MOTHER, newRecord.getStudentMother()); 
        mDB.insert(Student.STUDENT_TABLE_NAME,Student.STUDENT_ANIMALID, StudentRecordToAdd); 
        mDB.setTransactionSuccessful(); 
        Toast.makeText(this,"Recorded Added ",0).show(); 
      } finally { 
       mDB.endTransaction(); 
      }

什么是从我的值到我的NewRecord函数我的值的最佳方式是什么？我一直在看这么久，我认为我已经脑死亡了。谢谢

来源

2012-04-16 Hank

你为什么把结果放到Hashmap中？似乎它应该成为一个StudentRecord对象，当你解析它... – JRaymond 2012-04-16 21:49:03

我最初把数据放入列表视图。但我想保存它，以便它可以在以后访问，我不想保存原始的XML，因为他们需要能够更新它并存储它我不知道你的意思应该是什么成为学生记录对象 - 请你解释一下吗？谢谢 – Hank 2012-04-16 21:53:11

我明白你为什么想要一个数据库;但为什么不能从XML创建一个studentRecord对象，然后将它传递给需要StudentRecord的数据库函数？ – JRaymond 2012-04-16 21:54:51

如果我读你的权利，这听起来像你需要从形式/活动将您传递addStudent功能，其中它现在的生活变成某种“助手”类：

private class dbHelper { 
    Database mDB; // set this up however you are doing it already 

    private void addStudent(StudentRecord newRecord){ 
    mDB.beginTransaction(); 
    try { 
     ContentValues StudentRecordToAdd = new ContentValues(); 
     StudentRecordToAdd.put(Students.STUDENT_ID, newRecord.getStudentName()); 
     StudentRecordToAdd.put(Student.STUDENT_TYPE, newRecord.getStudentType()); 
     StudentRecordToAdd.put(Student.STUDENT_LOCATION, newRecord.getStudentLocation()); 
     StudentRecordToAdd.put(Student.STUDENT_MOTHER, newRecord.getStudentMother()); 
     mDB.insert(Student.STUDENT_TABLE_NAME,Student.STUDENT_ANIMALID, StudentRecordToAdd); 
     mDB.setTransactionSuccessful(); 
     Toast.makeText(this,"Recorded Added ",0).show(); 
    } finally { 
     mDB.endTransaction(); 
    } 
    } 
}

然后就是做给助手打电话时你解析你的XML

ArrayList<StudentRecord> StudentDownloads = new ArrayList<StudentRecord>(); 

for (int i = 0; i < nodes.getLength(); i++) {       
    Element e = (Element)nodes.item(i); 
    int id = Integer.valueOf(XMLfunctions.getValue(e, "StudentId"))); 
    int type = Integer.valueOf(XMLfunctions.getValue(e, "StudentType"))); 
    String location = XMLfunctions.getValue(e, "StudentLocation")); 
    String mother = XMLfunctions.getValue(e, "StudentMother")); 

    StudentRecord newRecord = new StudentRecord(id, type, location, mother); 

    StudentDownloads.add(newRecord); 
}

然后就大功告成了处理时：

for (StudentRecord s : StudentDownloads) { 
    mDBHelper.addStudent(s); 
}

来源

2012-04-16 22:10:57 JRaymond

这就是我所做的。再次感谢我欣赏它 – Hank 2012-04-16 22:16:11

从HashMap获取数据到SQLite数据库

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