当我做第一条记录时，它通常发生在 ListNote 上，但是当我点击按钮保存第二条记录时，应用程序在出错后关闭（应用程序突然关闭）
public class ListNote extends Activity {
DatabaseHelper dbhelper;
SQLiteDatabase db;
protected Cursor cursor;
protected ListAdapter adapter;
Moyenne moyenne;
public static ListView liste;
AddNote addNote;
protected TextView mat;
protected TextView coefi;
protected TextView somCoefi;
protected TextView somNote;
protected TextView per;
protected TextView datRecu;
protected TextView datCompo;
protected TextView notval;
protected TextView typNot;
protected TextView ansco;
protected TextView moye;
protected int matId;
protected int perId;
protected int anId;
protected String matMat;
protected String perPer;
protected String anAn;
ArrayList<String> listNotCoef;
ArrayList<Double> listCoef;
Double somCoef = 0.0;
Double somNot = 0.0;
Double moyNot = 0.0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.note_liste);
setTitle(R.string.note_title);
Log.i("Listnote oncreat", "OK 1");
// --------------- note_moy_item-----------------
moye = (TextView) findViewById(R.id.note_moy_item);
somNote = (TextView) findViewById(R.id.som_note_item);
mat = (TextView) findViewById(R.id.note_mat_item);
somCoefi = (TextView) findViewById(R.id.som_coef_item);
per = (TextView) findViewById(R.id.note_per_item);
ansco = (TextView) findViewById(R.id.note_ansco_item);
// --------------- note_list_item-----------------
liste = (ListView) findViewById(R.id.listnote);
datRecu = (TextView) findViewById(R.id.note_recu_item);
datCompo = (TextView) findViewById(R.id.note_compo_item);
typNot = (TextView) findViewById(R.id.note_type_item);
notval = (TextView) findViewById(R.id.note_val_item);
coefi = (TextView) findViewById(R.id.note_coef_item);
Log.i("Listnote oncreat", "OK 8");
// ------------------ affichage Matiere periode et année scolaire
// -------------------------
// ------------------ recuperation des données venant de l'activity
// précedente --------------------------
matId = getIntent().getIntExtra("MATIERE_ID", 0);
Bundle extra = getIntent().getExtras();
matMat = extra.getString("MATIERE_MAT");
anId = getIntent().getIntExtra("ANSCO_ID", 0);
Bundle extra1 = getIntent().getExtras();
anAn = extra1.getString("ANSCO_AN");
perId = getIntent().getIntExtra("PERIODE_ID", 0);
Bundle extra2 = getIntent().getExtras();
perPer = extra2.getString("PERIODE_PER");
Log.i("Listnote oncreat", "OK 9");
mat.setText(" " + matMat);
per.setText(" " + perPer);
ansco.setText(anAn);
Log.i("Listnote oncreat", "Mat: " + matMat + " Periode: " + perPer);
// Gestion des moy, som not som coef
somCoef = 0.0;
somNot = 0.0;
moyNot = 0.0;
sommeNote();
sommeCoef();
CalcMoyenne();
somNote.setText("" + roundTwoDecimals(somNot));
somCoefi.setText("" + somCoef);
moye.setText("" + roundTwoDecimals(moyNot));
LoadListNote();
liste.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
try {
Intent intent = new Intent(getApplicationContext(),
ModifNote.class);
SQLiteCursor cr = (SQLiteCursor) parent
.getItemAtPosition(position);
String typnot = cr.getString(cr
.getColumnIndex(DatabaseHelper.TYPENOTE));
Double valnot = cr.getDouble(cr
.getColumnIndex(DatabaseHelper.VALNOTE));
Double coefnot = cr.getDouble(cr
.getColumnIndex(DatabaseHelper.COEFNOTE));
String datR = cr.getString(cr
.getColumnIndex(DatabaseHelper.DATERECU));
String dateC = cr.getString(cr
.getColumnIndex(DatabaseHelper.DATECOMPO));
Note not = new Note(typnot, valnot, coefnot, datR, dateC,
matId, perId, anId);
not.setIdNote((int) id);
Log.i("Listnote onclic", "OK 1");
intent.putExtra("PERIODE_ID", perId);
intent.putExtra("PERIODE_PER", perPer);
intent.putExtra("ANSCO_ID", anId);
intent.putExtra("ANSCO_AN", anAn);
intent.putExtra("MATIERE_ID", matId);
intent.putExtra("MATIERE_MAT", matMat);
intent.putExtra("NOTE_ID", not.getIdNote());
intent.putExtra("NOTE_TYPE", typnot);
intent.putExtra("NOTE_VAL", valnot);
intent.putExtra("NOTE_COEF", coefnot);
intent.putExtra("NOTE_RECU", datR);
intent.putExtra("NOTE_COMPO", dateC);
cr.close();
startActivity(intent);
finish();
} catch (Exception ex) {
Alerts.CatchError(ListNote.this, ex.toString());
}
//
}
});
}
@Override
// Création du menu principal
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_list, menu);
return true;
}
@Override
// Selection d'un item du menu
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.moyenne_menu_add:
Intent intent = new Intent(getApplicationContext(), AddNote.class);
intent.putExtra("PERIODE_ID", perId);
intent.putExtra("PERIODE_PER", perPer);
intent.putExtra("ANSCO_ID", anId);
intent.putExtra("ANSCO_AN", anAn);
intent.putExtra("MATIERE_ID", matId);
intent.putExtra("MATIERE_MAT", matMat);
startActivity(intent);
finish();
break;
case R.id.moyenne_menu_sup:
// databaseHelper.Truncate();
// DataBind();
break;
}
return true;
}
public void LoadListNote() {
dbhelper = new DatabaseHelper(this);
db = dbhelper.getWritableDatabase();
boolean ok = true;
try {
cursor = db.rawQuery("Select " + DatabaseHelper.IDNOTE
+ " as _id , " + DatabaseHelper.VALNOTE + ", "
+ DatabaseHelper.TYPENOTE + ", " + DatabaseHelper.COEFNOTE
+ ", " + DatabaseHelper.DATERECU + ", "
+ DatabaseHelper.DATECOMPO + " from "
+ DatabaseHelper.TABLE_NOTE + " where "
+ DatabaseHelper.NOTEIDAN + " = ? and "
+ DatabaseHelper.NOTEIDPER + " = ? and "
+ DatabaseHelper.NOTEIDMAT + " = ? order by _id",
new String[] { "" + anId, "" + perId, "" + matId });
startManagingCursor(cursor);
String[] from = new String[] { DatabaseHelper.VALNOTE,
DatabaseHelper.TYPENOTE, DatabaseHelper.COEFNOTE,
DatabaseHelper.DATERECU, DatabaseHelper.DATECOMPO };
int[] to = new int[] { R.id.note_val_item, R.id.note_type_item,
R.id.note_coef_item, R.id.note_recu_item,
R.id.note_compo_item };
Log.i("LISTNote 2", "OK");
SimpleCursorAdapter sca = new SimpleCursorAdapter(this,
R.layout.note_list_item, cursor, from, to);
liste.setAdapter(sca);
Log.i("LISTNote 3", "OK");
} catch (Exception ex) {
ok = false;
AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setMessage(ex.toString());
b.show();
} finally {
if (ok) {
// cursor.close();
db.close();
dbhelper.close();
}
}
}
public double getNumber(String s) {
double n = Double.parseDouble(s);
return n;
}
private void sommeNote() {
boolean ok = true;
dbhelper = new DatabaseHelper(getApplicationContext());
try {
Log.i("sommeNote 1", "OK");
listNotCoef = dbhelper.getAllNote(anId, perId, matId);
Log.i("sommeNote 2", "OK");
// int nbNot = db.getNoteByMatCount();
somNot = 0.0;
Double notM = 0.0;
Double coefN = 0.0;
Log.i("sommeNote 3", "OK");
Double mulNotCoef = 0.0;
for (int i = 0; i < listNotCoef.size(); i++) {
String value = listNotCoef.get(i);
int index = value.indexOf("|");
notM = Double.valueOf(value.substring(0, index));
coefN = Double.valueOf(value.substring(index + 1));
mulNotCoef = notM * coefN;
Log.i("sommeNote ", "Note: " + notM + " Coef: " + coefN);
somNot = somNot + mulNotCoef;
Log.i("sommeNote pour", "Som Note: " + somNot);
}
Log.i("sommeNote 4", "Som Note: " + somNot);
// somNote.setText(String.valueOf(somNot));
// somNote.setText("" + roundTwoDecimals(somNot));
} catch (Exception ex) {
ok = false;
AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setMessage(ex.toString());
b.show();
} finally {
if (ok) {
// cursor.close();
dbhelper.close();
}
}
}
private void sommeCoef() {
boolean ok = true;
dbhelper = new DatabaseHelper(getApplicationContext());
try {
Log.i("sommeCoef 1", "OK");
listCoef = dbhelper.getAllCoef(anId, perId, matId);
Log.i("sommeCoef 2", "OK");
// int nbNot = db.getNoteByMatCount();
somCoef = 0.0;
Double notM = 0.0;
Log.i("sommeCoef 3", "OK");
for (int i = 0; i < listCoef.size(); i++) {
notM = listCoef.get(i);
somCoef = somCoef + notM;
Log.i("sommeCoef 4", "Som Coef: " + somCoef);
}
Log.i("sommeCoef 5", "Som Coef: " + somCoef);
// somNote.setText(String.valueOf(somNot));
// somCoefi.setText("" + somCoef);
} catch (Exception ex) {
ok = false;
AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setMessage(ex.toString());
b.show();
} finally {
if (ok) {
// cursor.close();
dbhelper.close();
}
}
}
private void CalcMoyenne() {
try {
if (somCoef > 0) {
moyNot = somNot / somCoef;
} else if (somCoef == 0) {
moyNot = 0.0;
}
} catch (Exception ex) {
AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setMessage(ex.toString());
b.show();
}
}
double roundTwoDecimals(double d) {
DecimalFormat twoDForm = new DecimalFormat("#.##");
return Double.valueOf(twoDForm.format(d));
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Intent intent = new Intent(getApplicationContext(),
ListMatiere.class);
intent.putExtra("PERIODE_ID", perId);
intent.putExtra("PERIODE_PER", perPer);
intent.putExtra("ANSCO_ID", anId);
intent.putExtra("ANSCO_AN", anAn);
startActivity(intent);
finish();
}
return false;
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
liste.setAdapter(null);
db.close();
dbhelper.close();
cursor.close();
super.onPause();
}
@Override
protected void onStop() {
liste.setAdapter(null);
db.close();
dbhelper.close();
cursor.close();
super.onStop();
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
LoadListNote();
super.onStart();
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
LoadListNote();
super.onResume();
}
@Override
protected void onDestroy() {
liste.setAdapter(null);
db.close();
dbhelper.close();
cursor.close();
super.onDestroy();
}
}
我的数据库助手的一部分
// --------------------NOTES---------------------------
//Store Notes
public void insererNote(String typeNote, Double valNote, Double coefNote,
String dateRecu, String dateCompo, int idMat, int idPer, int idAnsco) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(VALNOTE, valNote);
values.put(TYPENOTE, typeNote);
values.put(COEFNOTE, coefNote);
values.put(DATERECU, dateRecu);
values.put(DATECOMPO, dateCompo);
values.put(NOTEIDMAT, idMat);
values.put(NOTEIDPER, idPer);
values.put(NOTEIDAN, idAnsco);
db.insert(TABLE_NOTE, VALNOTE, values);
Log.i("insererNote ", "OK");
db.close();
}
//Get notes
public Cursor getNoteByMat(int idan, int idper, int idmat) {
SQLiteDatabase db = this.getWritableDatabase();
Cursor cur = db.rawQuery("Select " + IDNOTE + " as _id , " + VALNOTE
+ ", " + TYPENOTE + ", " + COEFNOTE + ", " + DATERECU + ", "
+ DATECOMPO + " from " + TABLE_NOTE + " where " + NOTEIDAN
+ " = ? and " + NOTEIDPER + " = ? and " + NOTEIDMAT
+ " = ? order by _id", new String[] { String.valueOf(idan), String.valueOf(idper),
String.valueOf(idmat) });
// Cursor cur= db.rawQuery("SELECT * FROM "+TABLE_NOTE,null);
return cur;
}
// get the mark with it coefficient for calculation
public ArrayList<String> getAllNote(int idan, int idper, int idmat) {
ArrayList<String> notes = new ArrayList<String>();
Log.i("GetAllNote 1 ", "OK");
// Select All Query
String selectQuery = "Select " + VALNOTE + ", "+ COEFNOTE +" from " + TABLE_NOTE
+ " where " + NOTEIDAN + " = ? and " + NOTEIDPER + " = ? and "
+ NOTEIDMAT + " = ?";
Log.i("GetAllNote 2 ", "ids"+idan+idper+idmat);
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, new String[] { String.valueOf(idan),
String.valueOf(idper), String.valueOf(idmat) });
Log.i("GetAllNote 3 ", "OK");
// looping through all rows and adding to list
while (cursor.moveToNext()) {
notes.add(cursor.getString(0) +"|"+ cursor.getString(1));
}
Log.i("GetAllNote 4 ", "OK");
// closing connection
cursor.close();
db.close();
Log.i("GetAllNote 5 ", "OK");
// returning lables
return notes;
}
// get list of coef to sum
public ArrayList<Double> getAllCoef(int idan, int idper, int idmat) {
ArrayList<Double> coef = new ArrayList<Double>();
Log.i("GetAllCoef 1 ", "OK");
// Select All Query
String selectQuery = "Select " + COEFNOTE + " from " + TABLE_NOTE
+ " where " + NOTEIDAN + " = ? and " + NOTEIDPER + " = ? and "
+ NOTEIDMAT + " = ?";
Log.i("GetAllCoef 2 ", "ids" + idan + idper + idmat);
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, new String[] { "" + idan,
"" + idper, "" + idmat });
Log.i("GetAllCoef 3 ", "OK");
// looping through all rows and adding to list
// cursor.moveToFirst();
while (cursor.moveToNext()) {
coef.add(Double.valueOf(cursor.getString(0)));
}
Log.i("GetAllCoef 4 ", "OK");
// // closing connection
// if (cursor!=null){
cursor.close();
// }
// if (db!=null){
db.close();
// }
// returning notes
return coef;
}
public int getNoteByMatCount() {
String countQuery = "SELECT * FROM " + TABLE_NOTE;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
int rowCount = cursor.getCount();
db.close();
cursor.close();
// return row count
return rowCount;
}
public int UpdateNote(Note not) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(VALNOTE, not.getValNote());
cv.put(TYPENOTE, not.getTypeNote());
cv.put(COEFNOTE, not.getCoefNote());
cv.put(DATERECU, not.getDateRecu());
cv.put(DATECOMPO, not.getDateCompo());
return db.update(TABLE_NOTE, cv, IDNOTE + "=?",
new String[] { String.valueOf(not.getIdNote()) });
}
public void DeleteNote(Note not) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_NOTE, IDNOTE + "=?",
new String[] { String.valueOf(not.getIdNote()) });
db.close();
}
在设备上调试后 Logcat 出现异常
10-20 17:28:07.710: E/AndroidRuntime(18635): FATAL EXCEPTION: main
10-20 17:28:07.710: E/AndroidRuntime(18635): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.activity/com.android.moyenne.note.ListNote}: java.lang.NumberFormatException
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.os.Handler.dispatchMessage(Handler.java:99)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.os.Looper.loop(Looper.java:130)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.ActivityThread.main(ActivityThread.java:3687)
10-20 17:28:07.710: E/AndroidRuntime(18635): at java.lang.reflect.Method.invokeNative(Native Method)
10-20 17:28:07.710: E/AndroidRuntime(18635): at java.lang.reflect.Method.invoke(Method.java:507)
10-20 17:28:07.710: E/AndroidRuntime(18635): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
10-20 17:28:07.710: E/AndroidRuntime(18635): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
10-20 17:28:07.710: E/AndroidRuntime(18635): at dalvik.system.NativeStart.main(Native Method)
10-20 17:28:07.710: E/AndroidRuntime(18635): Caused by: java.lang.NumberFormatException
10-20 17:28:07.710: E/AndroidRuntime(18635): at org.apache.harmony.luni.util.FloatingPointParser.parseDblImpl(Native Method)
10-20 17:28:07.710: E/AndroidRuntime(18635): at org.apache.harmony.luni.util.FloatingPointParser.parseDouble(FloatingPointParser.java:283)
10-20 17:28:07.710: E/AndroidRuntime(18635): at java.lang.Double.parseDouble(Double.java:318)
10-20 17:28:07.710: E/AndroidRuntime(18635): at java.lang.Double.valueOf(Double.java:356)
10-20 17:28:07.710: E/AndroidRuntime(18635): at com.android.moyenne.note.ListNote.roundTwoDecimals(ListNote.java:349)
10-20 17:28:07.710: E/AndroidRuntime(18635): at com.android.moyenne.note.ListNote.onCreate(ListNote.java:114)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-20 17:28:07.710: E/AndroidRuntime(18635): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
10-20 17:28:07.710: E/AndroidRuntime(18635): ... 11 more