android 简单试题系统

学习技能：sqlitebrowser.exe工具创建sqlite数据库，创建表，添加数据，把数据库添加到项目中。

使用了assets文件夹。该文件夹用于把资源压缩到apk。然后程序启动判断是否存在该文件，不存在该文件就复制该文件到指定目录。

使用radiobutton结合radio来呈现试题。

db=SQLiteDatabase.openDatabase("/data/data/com.example.qa_android/databases/qa.db", null,SQLiteDatabase.OPEN_READWRITE);

public List<Question> getQeustions()

{

List<Question> list=new ArrayList<Question>();

Cursor cursor=db.rawQuery("select * from question", null);

if(cursor.getCount()>0)

{

cursor.moveToFirst();

for(int i=0;i<cursor.getCount();i++)

{

cursor.moveToPosition(i);

Question question=new Question();

question.ID=cursor.getInt(cursor.getColumnIndex("ID"));

question.Question=cursor.getString(cursor.getColumnIndex("Question"));

question.AnswerA=cursor.getString(cursor.getColumnIndex("AnswerA"));

question.AnswerB=cursor.getString(cursor.getColumnIndex("AnswerB"));

question.AnswerC=cursor.getString(cursor.getColumnIndex("AnswerC"));

question.AnswerD=cursor.getString(cursor.getColumnIndex("AnswerD"));

question.AnswerDEsc=cursor.getString(cursor.getColumnIndex("AnswerDEsc"));

question.Answer=cursor.getInt(cursor.getColumnIndex("Answer"));

question.selectAnswer=-1;

list.add(question);

}

}

return list;

}