我的项目是以出勤为基础的。当我选中复选框以标记学生的出勤时，按钮单击它将保存在我的sqlite数据库中。但这里只保存一个值，它是微调器上的最后一个值。
如何在按钮点击其他值时将微调器的多个复选框值存储到数据库中？
这是我的attendancetakerclass：
public class AttendanceTracker extends Activity {
// ArrayList<String> NameList;
DataBaseHelper dbHelper;
String classcode;
SQLiteDatabase db;
Button save_attendance;
String type2="student";
//String type1="student";
//RadioGroup rg;
TextView date,time;
static String class1;
String type;
String slot;
String datetime1;
String subject, bioid,datevalue,timevalue;
List<Model> bioid1;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.attendancetaker);
dbHelper=new DataBaseHelper(AttendanceTracker.this);
this.db=dbHelper.getReadableDatabase();
date=(TextView)findViewById(R.id.tvdatetime);
datevalue=date.getText().toString();
time=(TextView)findViewById(R.id.tvtime);
timevalue=time.getText().toString();
String currentDateTimeString = DateFormat.getDateInstance().format(new Date());
// textView is the TextView view that should display it
date.setText(currentDateTimeString);
Time today = new Time(Time.getCurrentTimezone());
today.setToNow();
time.setText(today.format("%k:%M:%S"));
//bioid=dbHelper.getbioid();
Bundle extras = this.getIntent().getExtras();
String inputfname1=extras.getString("firstn1");
String inputlname1=extras.getString("lastn1");
String inputclass=extras.getString("class");
String inputsub=extras.getString("sub");
String inputslot=extras.getString("type");
String inputprctslot=extras.getString("slot");
TextView viewfname = (TextView) findViewById(R.id.tvname);
viewfname.setText(inputfname1);
TextView viewlname = (TextView) findViewById(R.id.tvsurnamevalue);
viewlname.setText(inputlname1);
TextView viewclass = (TextView) findViewById(R.id.tvclassvalue);
viewclass.setText(inputclass);
classcode = viewclass.getText().toString();
TextView viewsub = (TextView) findViewById(R.id.tvsubjectname);
viewsub.setText(inputsub);
subject = viewsub.getText().toString();
TextView viewslot = (TextView) findViewById(R.id.tvslotvalue);
viewslot.setText(inputslot);
type = viewslot.getText().toString();
TextView viewprcts = (TextView) findViewById(R.id.tvprctsvalue);
viewprcts.setText(inputprctslot);
slot = viewprcts.getText().toString();
ListView studentList=(ListView)findViewById(R.id.take_attend_list);
bioid1=this.getbioid();
ArrayAdapter<Model> adapter = new MyAdapter(this,getdata(),getdatalname(),getbioid());
studentList.setAdapter(adapter);
}
public List<Model> getdata()
{
List<Model> list = new ArrayList<Model>();
Cursor cursor =db.rawQuery("SELECT firstname FROM users WHERE type='"+type2+"' AND class_code='"+classcode+"'", null);
//Cursor cursor = db.rawQuery("SELECT firstname,lastname FROM attndrecords", null);
if(cursor.moveToFirst())
{
do
{
list.add(get(cursor.getString(cursor.getColumnIndex("firstname"))));
//list.add(get(cursor.getString(cursor.getColumnIndex("lastname"))));
// bioid= cursor.getString(cursor.getColumnIndex("bioid"));
//list.add(get(cursor.getString(cursor.getColumnIndex("bioid"))));
}while(cursor.moveToNext());
}
return list;
}
public List<Model> getbioid()
{
List<Model> list = new ArrayList<Model>();
Cursor cursor =db.rawQuery("SELECT bioid FROM users WHERE type='"+type2+"' AND class_code='"+classcode+"'", null);
//Cursor cursor = db.rawQuery("SELECT firstname,lastname FROM attndrecords", null);
if(cursor.moveToFirst())
{
do
{
//list.add(get(cursor.getString(cursor.getColumnIndex("firstname"))));
//list.add(get(cursor.getString(cursor.getColumnIndex("lastname"))));
// bioid= cursor.getString(cursor.getColumnIndex("bioid"));
list.add(get(cursor.getString(cursor.getColumnIndex("bioid"))));
}while(cursor.moveToNext());
}
return list;
}
private Model get(String string) {
// TODO Auto-generated method stub
return new Model(string, string, string);
}
public List<Model> getdatalname()
{
List<Model> listlname = new ArrayList<Model>();
Cursor cursor =db.rawQuery("SELECT lastname FROM users WHERE type='"+type2+"' AND class_code='"+classcode+"'", null);
//Cursor cursor = db.rawQuery("SELECT firstname,lastname FROM attndrecords", null);
if(cursor.moveToFirst())
{
do
{
//list.add(cursor.getString(cursor.getColumnIndex("firstname")));
listlname.add(get(cursor.getString(cursor.getColumnIndex("lastname"))));
}while(cursor.moveToNext());
}
return listlname;
}
/*public String getbioid()
{
String query = "SELECT bioid FROM users WHERE type='" +type2+"' AND class_code='"+classcode+"'";
Cursor cursor=db.rawQuery(query, null);
if(cursor.getCount()<0) // UserName Not Exist
{
cursor.close();
return "NOT EXIST";
}
cursor.moveToFirst();
String bioid= cursor.getString(cursor.getColumnIndex("bioid"));
cursor.close();
return bioid;
}*/
public void insertdata()
{
StringBuffer sb = new StringBuffer();
// Retrive Data from list
for (Model bean : bioid1) {
if (bean.isSelected()) {
sb.append(bean.getBioid());
//sb.append(",");
Toast.makeText(this, sb.toString().trim(), 1000);
}
}
String query = "INSERT INTO '"+classcode+"'(bioid,date,time,subject,slot) VALUES('"+sb+"','"+datevalue+"','"+timevalue+"','"+subject+"','"+slot+"')";
Cursor cursor=db.rawQuery(query, null);
if(cursor.getCount()<0) // UserName Not Exist
{
cursor.close();
return;
}
cursor.moveToFirst();
cursor.close();
}
/*public void savedata(String bioid,String datevalue,String timevalue,String subject,String slot) {
// TODO Auto-generated method stub
ContentValues values = new ContentValues();
values.put("bioid", bioid);
values.put("date", datevalue);
values.put("time", timevalue);
values.put("subject", subject);
values.put("slot", slot);
db.insert(classcode, null, values);
db.close();
}*/
public void submit_details(View v)
{
//savedata(bioid, datevalue, timevalue, subject, slot);
insertdata();
Toast.makeText(AttendanceTracker.this, "Saved", Toast.LENGTH_LONG).show();
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("Attendance Submitted Successfully. Please Connect the Device to WiFi");
alertDialogBuilder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
Intent i = new Intent(AttendanceTracker.this, Attendance.class);
startActivity(i);
}
});
alertDialogBuilder.setNegativeButton("No",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish(); }
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
}
package com.edbeans.attendance;
public class AttendancePOJO {
String bioid;
String date;
String time;
String subject;
String slot;
public AttendancePOJO()
{
}
public AttendancePOJO(String bioid, String date, String time,String subject, String slot)
{
this.bioid=bioid;
this.date=date;
this.time=time;
this.subject=subject;
this.slot=slot;
}
public String getBioid() {
return bioid;
}
public void setBioid(String bioid) {
this.bioid = bioid;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getSlot() {
return slot;
}
public void setSlot(String slot) {
this.slot = slot;
}
}
--------------------------------------------------------------------------------
## My custom adapter ##
<pre><code>package com.edbeans.attendance;
import java.util.List;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
public class MyAdapter extends ArrayAdapter<Model> {
private final List<Model> list;
private final List<Model> list2;
private final List<Model> list3;
private final Activity context;
public MyAdapter(Activity context, List<Model> list, List<Model> list2, List<Model> list3) {
super(context, R.layout.attend_layout, list);
this.context = context;
this.list = list;
this.list2=list2;
this.list3=list3;
}
static class ViewHolder {
protected TextView text;
protected CheckBox checkbox;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
view = inflator.inflate(R.layout.attend_layout, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.text = (TextView) view.findViewById(R.id.tvstudentfname);
viewHolder.checkbox = (CheckBox) view.findViewById(R.id.checkBox1);
viewHolder.checkbox
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
Model element = (Model) viewHolder.checkbox
.getTag();
element.setSelected(buttonView.isChecked());
}
});
view.setTag(viewHolder);
viewHolder.checkbox.setTag(list.get(position));
} else {
view = convertView;
((ViewHolder) view.getTag()).checkbox.setTag(list.get(position));
}
ViewHolder holder = (ViewHolder) view.getTag();
holder.text.setText(list.get(position).getName()+ " " + list2.get(position).getLname()+" " + list3.get(position).getBioid());
// holder.text(list3.get(position));
holder.checkbox.setChecked(list.get(position).isSelected());
return view;
}
}
如何存储所有选中的值意味着所有学生的生物量和日期时间等级？如何在单击按钮时一次存储多个值？