这是getContact方法，在这种情况下将rowID作为计数器
public Cursor getContact(long rowId) throws SQLException
{
Cursor mCursor =
db.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
question, possibleAnsOne,possibleAnsTwo, possibleAnsThree,realQuestion,userR}, KEY_ROWID + "=" + rowId, null,
null, null, null, null);
if (mCursor != null) {
// moves to the the first record
mCursor.moveToFirst();
}
return mCursor;
}
这是我的问题。我从第一个开始。所以计数器设置为1。
在public oncreate方法中。当我因某种原因点击下一步时，它没有用db.updateUserResult设置第一条记录的值（counter，8）;我认为它缺少了第一张唱片。我知道这一点的原因是，如果我选择了前面的答案。让我们说问题1正确答案是选项2而问题2的正确答案是选项3.如果您为问题1选择选项3，那么您将得到正确的答案。如果我继续选择正确的答案，我会得到所有正确的结果。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle b = getIntent().getExtras();
boolean TimerStarted = b.getBoolean("timerlogic");
System.out.println("what is the logic of the timer" + TimerStarted);
Log.e(LOGS, "Whatis the first value for the timer inside the timer_btn" + TimerStarted);
setContentView(R.layout.basic);
// this method is better then a try and catch block as it actually prevents the occurence occuring instead of just patching it.
// the purpose of t
db.open();
Cursor c = db.getContact(1);
if(c.isFirst())
{
TextView question = (TextView)findViewById(R.id.question);
RadioButton radio1 = (RadioButton)findViewById(R.id.radio1);
RadioButton radio2 = (RadioButton)findViewById(R.id.radio2);
RadioButton radio3 = (RadioButton)findViewById(R.id.radio3);
answerCounterText = (TextView)findViewById(R.id.answerCounterText);
answerCounterText.setText(String.valueOf("0"));
// for the first record set the counter to zero
// question.setText(String.valueOf("0"));
TextView QuestionNumber = (TextView)findViewById(R.id.QuestionNumber);
Complete = (Button)findViewById(R.id.Continue);
Complete.setBackgroundResource(R.drawable.complete);
Complete.setVisibility(View.INVISIBLE);
QuestionNumber.setText(String.valueOf("Question Number :" + counter));
System.out.println("what is the setup counter after loop" + counter);
//DisplayContact(c,radio1);
DisplayRadioButton(c,radio1,radio2,radio3,question);
}
// }
// }
// Previous = (Button)findViewById(R.id.Previous);
Next = (Button)findViewById(R.id.Next);
Next.setBackgroundResource(R.drawable.next);
// get the results from the checked box
Next.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
// Cursor c = db.getContact(1);
/*
if (firstrecordchosen)
{
Cursor c = db.getContact(1);
System.out.println("what is the current value of the counter 0" + counter);
firstrecordchosen = false;
}
counter++;
*/
counter++;
Cursor c = db.getContact(counter);
if (c.moveToFirst() && !c.isNull(0))
{
TextView question = (TextView)findViewById(R.id.question);
RadioButton radio1 = (RadioButton)findViewById(R.id.radio1);
RadioButton radio2 = (RadioButton)findViewById(R.id.radio2);
RadioButton radio3 = (RadioButton)findViewById(R.id.radio3);
TextView answerCounterText = (TextView)findViewById(R.id.answerCounterText);
TextView QuestionNumber = (TextView)findViewById(R.id.QuestionNumber);
RadioGroup radioGroup1 = (RadioGroup)findViewById(R.id.radioGroup1);
QuestionNumber.setText(String.valueOf("Question Number :" + counter));
Log.e(LOGS, "default user set variable " + c.getString(5));
Log.e(LOGS, "real value" + c.getString(6));
System.out.println("what is the current value of the counter" + counter);
// DisplayContact(c,radio1);
DisplayRadioButton(c,radio1,radio2,radio3,question);
final String questionOneDb = c.getString(5);
String radioOneIndex = "1";
String radioTwoIndex = "2";
String radioThreeIndex = "3";
// set the first question to have the right value
if(radio1.isChecked() )
{
db.updateUserResult(counter,8);
if (questionOneDb.equals(radioOneIndex))
{
Log.e(LOGS, "correct" );
rightAnswer(c,radio1,answerCounterText);
// DisplayContact(c,radio1);
}
else
{
Log.e(LOGS, "wrong" );
}
}
if(radio2.isChecked() )
{
db.updateUserResult(counter,9);
if (questionOneDb.equals(radioTwoIndex))
{
System.out.println("is this counter being reached");
// db.updateUserResult(1, 2);
// db.updateUserResult(counter, 2);
// db.updateUserResult(recordval, 6);
Log.e(LOGS, "correct" );
rightAnswer(c,radio1,answerCounterText);
}
else
{
Log.e(LOGS, "wrong" );
}
}
if(radio3.isChecked() )
{
db.updateUserResult(counter,10);
if (questionOneDb.equals(radioThreeIndex))
{
Log.e(LOGS, "correct" );
System.out.println("you have the right answer");
rightAnswer(c,radio1,answerCounterText);
}
else
{
Log.e(LOGS, "wrong" );
}
}
}
/* when you get ot the last record you want to be able to close the db */
if (c.isAfterLast())
{
// this halts the timer when there are no questiosn left
Next.setVisibility(View.GONE);
// Previous.setVisibility(View.GONE);
Toast.makeText(getBaseContext(), "More questions available in the full version PHPExpert " , Toast.LENGTH_LONG).show();
Complete.setVisibility(View.VISIBLE);
handler.removeCallbacks(timedTask);
db.close();
intentcalls();
}
}
});
Home = (Button)findViewById(R.id.home_btn);
Home.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent(Basic_database_questionsActivity.this,AndroidGUIActivity.class);
startActivity(i);
}
});
}
答案 0 :(得分：1)
如果我不是完全错了，你就有时间问题。
首先，你得到第一个问题并显示用户界面（你的单选按钮和东西）。
如果选择的答案是正确的，请点击“下一步”按钮进行检查，是否正确？
如果是这样，你犯的错误是你先增加计数器，然后根据计数器查询问题（这将是下一个）。之后，检查所选的单选按钮是否正确。当您已经从数据库中读到下一个问题时，您将使用第二个问题的存储答案检查所选答案。
希望很清楚。
简短提示：尝试清理一些代码。不要在onCreate()内部放置任何小块，以便您可以更轻松地查看和遵循代码流...
答案 1 :(得分：0)
试试这个
Cursor c1 = mDbHelper.fetAll(); \\ or whatever your method is to get data from database.
if(c1.moveToFirst()){
do{
\\ Do what you want to do with it.
}while(c1.moveToNext()); \\ this will move the cursor to next line.
}
c1.close(); \\ make sure you close it, else errors will pop up in LOGCAT.