在我的ProfileOneFragment我正在使用onTextChanged方法更新数据，但是当我重新启动并检索要在TextView中显示的数据时，它会在创建时显示初始值。
这是我的DBHelper类
public class DBHelper extends SQLiteOpenHelper {
SQLiteDatabase db=this.getReadableDatabase();
public DBHelper(Context context) {
super(context, "edentitydb", null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE IF NOT EXISTS profile (" +
"profileid NUMBER PRIMARY KEY," +
"fname TEXT," +
"lname TEXT," +
"alias TEXT NULL," +
"designation TEXT NULL," +
"organization TEXT NULL," +
"primary_number TEXT," +
"secondary_number TEXT," +
"email TEXT," +
"fax TEXT NULL," +
"office_address NULL," +
"home_address NULL" +
")");
db.execSQL("INSERT INTO profile values" +
"(1,'fname','lname',null,null,null,'primary_number',null,'email',null,null,null)");
db.execSQL("INSERT INTO profile values" +
"(2,'fname','lname',null,null,null,'primary_number',null,'email',null,null,null)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
//db.execSQL("DROP TABLE IF EXISTS profile");
//onCreate(db);
}
public void insertFname(String fn,int profile)
{
db.rawQuery("UPDATE profile SET fname='"+fn+"' WHERE profileid="+profile,null);
}
public String getFname(int profile)
{
String query = " SELECT fname FROM profile WHERE profileid =" + profile;
Cursor c = db.rawQuery(query,null);
if (c != null && c.moveToFirst()) {
String fn = c.getString(0);
c.close();
return fn;
}
else
return null;
}
public void insertLname(String ln,int profile)
{
db.rawQuery("UPDATE profile SET lname='"+ln+"' WHERE profileid="+profile,null);
}
public String getLname(int profile)
{
String query = " SELECT lname FROM profile WHERE profileid =" + profile;
Cursor c = db.rawQuery(query,null);
if (c != null && c.moveToFirst()) {
String ln = c.getString(0);
c.close();
return ln;
}
else
return null;
}
public void insertAlias(String al,int profile)
{
db.rawQuery("UPDATE profile SET alias='"+al+"' WHERE profileid="+profile,null);
}
public String getAlias(int profile)
{
String query = " SELECT alias FROM profile WHERE profileid =" + profile;
Cursor c = db.rawQuery(query,null);
if (c != null && c.moveToFirst()) {
String al = c.getString(0);
c.close();
return al;
}
else
return null;
}
public void updateFName(String name,int profile){
//db.rawQuery("UPDATE profile SET fname='" + name + "' WHERE profileid=1" , null);
}
public void updateLName(String name,int profile){
//db.rawQuery("UPDATE profile SET lname='"+name+"' WHERE profileid=?",new String[]{profile+""});
}
public void updateAlias(String alias,int profile){
//db.rawQuery("UPDATE profile SET alias='"+alias+"' WHERE profileid=?",new String[]{profile+""});
}
public void updateDesignation(String designation,int profile){
db.rawQuery("UPDATE profile SET designation='"+designation+"' WHERE profileid="+profile,null);
}
public void updateOrganization(String organization,int profile){
db.rawQuery("UPDATE profile SET organization='" + organization + "' WHERE profileid=" + profile, null);
}
public void updatePrimaryNumber(String number,int profile){
db.rawQuery("UPDATE profile SET primary_number='" + number + "' WHERE profileid=" + profile, null);
}
public void updateScondaryNumber(String number,int profile){
db.rawQuery("UPDATE profile SET secondary_number='" + number + "' WHERE profileid=" + profile, null);
}
public void updateEmail(String email,int profile){
db.rawQuery("UPDATE profile SET email='" + email + "' WHERE profileid=" + profile, null);
}
public void updateFax(String fax,int profile){
db.rawQuery("UPDATE profile SET fax='" + fax + "' WHERE profileid=" + profile, null);
}
public void updateOfficeAddress(String address,int profile){
db.rawQuery("UPDATE profile SET office_address='" + address + "' WHERE profileid=" + profile, null);
}
public void updateHomeAddress(String address,int profile){
db.rawQuery("UPDATE profile SET home_address='" + address + "' WHERE profileid=" + profile, null);
}
public String getProfileDetails(int profile,String field){
String str="";
Cursor cursor=db.query("profile",new String[]{field},"profileid="+profile,null,null,null,null);
if(cursor.moveToFirst()){
str=cursor.getString(cursor.getColumnIndex(field));
}
return str;
}
}
这是我的片段来处理
public class ProfileOneFragment extends Fragment {
public ProfileOneFragment(){
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
DBHelper db;
Context context;
Spinner spinner_salutation;
ArrayAdapter<CharSequence> adapter;
EditText fone_fname,fone_lname,fone_alias;
ImageView fone_dp;
ProgressBar fone_progressBar;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.fragment_profile_one, container, false);
context=getContext();
db=new DBHelper(context);
fone_progressBar=(ProgressBar)view.findViewById(R.id.fone_progressBar);
spinner_salutation=(Spinner)view.findViewById(R.id.spinner_salutation);
adapter=ArrayAdapter.createFromResource(context,R.array.salutations,R.layout.support_simple_spinner_dropdown_item);
adapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item);
spinner_salutation.setAdapter(adapter);
spinner_salutation.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(context, parent.getItemAtPosition(position) + "", Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
fone_dp=(ImageView)view.findViewById(R.id.fone_dp);
fone_dp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
fone_fname=(EditText)view.findViewById(R.id.fone_fname);
fone_lname=(EditText)view.findViewById(R.id.fone_lname);
fone_alias=(EditText)view.findViewById(R.id.fone_alias);
String temp = db.getFname(1);
fone_fname.setText(temp);
String temp1 = db.getLname(1);
fone_lname.setText(temp1);
String temp2 = db.getAlias(1);
fone_alias.setText(temp2);
fone_fname.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String fn = fone_fname.toString();
db.insertFname(fn,1);
Toast.makeText(getActivity(),"Saved Successfully", Toast.LENGTH_LONG).show();
}
@Override
public void afterTextChanged(Editable s) {
db.updateFName(s.toString(),1);
}
});
fone_lname.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String ln = fone_lname.toString();
db.insertLname(ln,1);
Toast.makeText(getActivity(),"Saved Successfully", Toast.LENGTH_SHORT).show();
}
@Override
public void afterTextChanged(Editable s) {
db.updateLName(s.toString(), 1);
}
});
fone_alias.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String al = fone_alias.toString();
db.insertAlias(al,1);
Toast.makeText(getActivity(),"Saved Successfully", Toast.LENGTH_SHORT).show();
}
@Override
public void afterTextChanged(Editable s) {
db.updateAlias(s.toString(), 1);
}
});
return view;
}
}