Android Store Listview Daten in SQlite Datenbank und Daten abrufen oncreate der Aktivität in Listview

Question

Ich habe eine ListActivity, in der ich bin ein Popup-Dialogfeld für die Auswahl von Kontaktinformationen und Auswahl von Datum und Uhrzeit. Um zu dieser Zeit eine Benachrichtigung zu generieren. Ich habe es getan und alle Daten werden in ListView angezeigt.

so was ich tun möchte, ist als Benutzer auswählen und legt die Zeit für die Benachrichtigung die ListView-Zeilendaten sollten in der Datenbank (sqlite) gespeichert werden. und wenn der Benutzer die Aktivität startet, können die gespeicherten Daten dem Benutzer angezeigt werden. So können Benutzer ihre Benachrichtigungen Plan sehen.

jetzt, dass ich listViews implementiert habe ich nicht wissen, wie man Daten in sqlite speichern und abrufen .. Ich habe gesucht und viele Tutorials versucht, aber nichts funktioniert in diesem Zusammenhang.

Ich teile meinen Code ein bisschen grob. aber ich werde markieren, wo die Daten sind und von dort aus, wie es in der Datenbank gespeichert werden kann.

hier ist meine Benachrichtigungsklasse:

public class noticall extends ListActivity { 


    CustomDateTimePicker custom; 
    TextView tv,tv1; 
    EditText ed; 
    String store; 
    static String Names; 
    public static final int PICK_CONTACT = 1; 
    String [] adi ; 
    String [] adi1 ; 
    String [] adi2 ; 
    String [] adi3 ; 
    static int incre=0; 
    ArrayList<String> myrows = new ArrayList<String>(); 
    ArrayList<String> time1 = new ArrayList<String>(); 
    ArrayList<String> name1 = new ArrayList<String>(); 
    ArrayList<String> number1 = new ArrayList<String>(); 
    private PendingIntent pendingIntent; 
    ListView listview; 
    String temp1 ,temp2 ; 
    int x=0; 
    OnItemClickListener listener; 
    String Date,Time,Name,Number; 
    MyNotiAdapter adp; 


    private SQLiteAdapter mySQLiteAdapter; 

     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.notify); 
      listview = (ListView) findViewById(android.R.id.list); 

      listview.setDividerHeight(2); 

      // mySQLiteAdapter = new SQLiteAdapter(noticall.this); 

    custom = new CustomDateTimePicker(noticall.this,new CustomDateTimePicker.ICustomDateTimeListener() { 

       @Override 
       public void onCancel() { 
        finish(); 
       } 


       @Override 
       public void onSet(Dialog dialog, Calendar calendarSelected,Date dateSelected, int year, String monthFullName, 
          String monthShortName, int monthNumber, int date, 
          String weekDayFullName, String weekDayShortName, 
          int hour24, int hour12, int min, int sec, 
          String AM_PM) { 

         Calendar calendar = Calendar.getInstance(); 
         calendar.set(year, monthNumber, date, hour24, min, 0); 

         long when = calendar.getTimeInMillis();   // notification time 

         Intent myIntent = new Intent(noticall.this, MyReceiver.class); 
         pendingIntent = PendingIntent.getBroadcast(noticall.this, 0, myIntent,0); 

         AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE); 
         alarmManager.set(AlarmManager.RTC, calendar.getTimeInMillis(), pendingIntent); 


     Date = calendarSelected.get(Calendar.DAY_OF_MONTH) + "/" + (monthNumber+1) + "/" +year; 
     Time = hour12 + ":" + min + " " + AM_PM; 

     Log.e("Timeee", Time+""); 


     setlisto(Date); 


     //Toast.makeText(noticall.this, store, Toast.LENGTH_SHORT).show(); 

      } 
    });  



      custom.set24HourFormat(false); 
      custom.setDate(Calendar.getInstance()); 



       findViewById(R.id.button_date).setOnClickListener(
        new OnClickListener() { 
         @Override 
         public void onClick(View v) { 



         Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI); 
         startActivityForResult(intent,PICK_CONTACT); 
         custom.showDialog(); 
         incre++; 
         } 
        }); 


     // if(adi!=null) 
       read_db(); 



    } 


    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    { 
     super.onActivityResult(requestCode, resultCode, data); 

     if(resultCode != RESULT_CANCELED){ 

      if (requestCode == 1) 
      { 
       // Get the URI that points to the selected contact 
       Uri contactUri = data.getData(); 

       // We only need the NUMBER column, because there will be only one row in the result 
       String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME, ContactsContract.CommonDataKinds.Phone.CONTACT_ID}; 

       String[] segments = contactUri.toString().split("/"); 
       String id = segments[segments.length - 1]; 

       // Perform the query on the contact to get the NUMBER column 
       // We don't need a selection or sort order (there's only one result for the given URI) 
       // CAUTION: The query() method should be called from a separate thread to avoid blocking 
       // your app's UI thread. (For simplicity of the sample, this code doesn't do that.) 
       // Consider using CursorLoader to perform the query. 
       Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, projection, null, null, null); 
       cursor.moveToFirst(); 
       while (!cursor.isAfterLast()) 
       { 
        int cid = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID); 
        String contactid = cursor.getString(cid); 

        if (contactid.equals(id)) 
        { 
         // Retrieve the phone number from the NUMBER column 
         int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER); 
         String number = cursor.getString(column); 

         // Retrieve the contact name from the DISPLAY_NAME column 
         int column_name = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME); 
         String name = cursor.getString(column_name); 

         // Do something with the phone number... 
         // Toast.makeText(this, "I added the Contact: \n" + name + " " + number, Toast.LENGTH_SHORT).show(); 

         // ed.setText(name+" - "+number); 

         Name= Names=name; 
         Number =number; 



        } 

       cursor.moveToNext(); 
       } 
       cursor.close(); 

       } 
      } 
     } 


    public void setlisto(String one){ 

    Log.e("setlistoo",one+""); 
    myrows.add(one); 
    time1.add(Time); 
    name1.add(Name); 
    number1.add(Number); 
     adi=myrows.toArray(new String[myrows.size()]); 
    adi1=time1.toArray(new String[time1.size()]); 
    adi2=name1.toArray(new String[name1.size()]); 
    adi3=number1.toArray(new String[number1.size()]); 

    mySQLiteAdapter = new SQLiteAdapter(noticall.this); 
    mySQLiteAdapter.openToWrite(); 
    mySQLiteAdapter.deleteAll(); 

    mySQLiteAdapter.insert(adi,adi1,adi2,adi3); 

    listview.setAdapter(new MyNotiAdapter(noticall.this, adi,adi1,adi2,adi3)); 
    x++; 


    mySQLiteAdapter.close(); 


    } 

    public void read_db(){ 

     /* 
      * Open the same SQLite database 
      * and read all it's content. 
      */ 

     Log.e("jsahbdv", "munda agaya medaan men hay jamaalo"); 

      mySQLiteAdapter = new SQLiteAdapter(this); 
      mySQLiteAdapter.openToRead(); 

      Cursor cursor = mySQLiteAdapter.queueAll(); 
      startManagingCursor(cursor); 

      String[] from = new String[]{SQLiteAdapter.KEY_Name,SQLiteAdapter.KEY_Number,SQLiteAdapter.KEY_Date,SQLiteAdapter.KEY_Time}; 
      int[] to = new int[]{R.id.person,R.id.edu,R.id.label,R.id.tym}; 

      SimpleCursorAdapter cursorAdapter = 
        new SimpleCursorAdapter(this, R.layout.row2, cursor, from, to); 

      listview.setAdapter(cursorAdapter); 

      mySQLiteAdapter.close(); 







    } 


} 

meine SQLiteAdapter Klasse:

public class SQLiteAdapter { 

    public static final String MYDATABASE_NAME = "MY_DATABASE"; 
    public static final String MYDATABASE_TABLE = "MY_TABLE"; 
    public static final int MYDATABASE_VERSION = 1; 
    public static final String KEY_ID = "_id"; 
    public static final String KEY_Name = "Name"; 
    public static final String KEY_Number = "Number"; 
    public static final String KEY_Date = "Date"; 
    public static final String KEY_Time = "Time"; 



    //create table MY_DATABASE (ID integer primary key, Content text not null); 
    private static final String SCRIPT_CREATE_DATABASE = 
     "create table " + MYDATABASE_TABLE + " (" 
     + KEY_ID + " integer primary key autoincrement, " 
     + KEY_Name + " text not null, " 
     + KEY_Number + " text not null, " 
     + KEY_Date + " text not null, " 
     + KEY_Time + " text not null);"; 


    private SQLiteHelper sqLiteHelper; 
    private SQLiteDatabase sqLiteDatabase; 

    private Context context; 

    public SQLiteAdapter(Context c){ 
     context = c; 
    } 

    public SQLiteAdapter openToRead() throws android.database.SQLException { 
     sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); 
     sqLiteDatabase = sqLiteHelper.getReadableDatabase(); 
     return this;  
    } 

    public SQLiteAdapter openToWrite() throws android.database.SQLException { 
     sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); 
     sqLiteDatabase = sqLiteHelper.getWritableDatabase(); 
     return this;  
    } 

    public void close(){ 
     sqLiteHelper.close(); 
    } 

    public long insert(String[] content,String[] content1,String[] content2,String[] content3){ 

     ContentValues contentValues = new ContentValues(); 
     contentValues.put(KEY_Name, content.toString()); 
     contentValues.put(KEY_Number, content1.toString()); 
     contentValues.put(KEY_Date, content2.toString()); 
     contentValues.put(KEY_Time, content3.toString()); 
     return sqLiteDatabase.insert(MYDATABASE_TABLE, null, contentValues); 
    } 

    public int deleteAll(){ 
     return sqLiteDatabase.delete(MYDATABASE_TABLE, null, null); 
    } 

    public Cursor queueAll(){ 
     String[] columns = new String[]{KEY_ID, KEY_Name, KEY_Number, KEY_Date, KEY_Time}; 
     Cursor cursor = sqLiteDatabase.query(MYDATABASE_TABLE, columns,null, null, null, null, null); 

     return cursor; 
    } 

    public class SQLiteHelper extends SQLiteOpenHelper { 

     public SQLiteHelper(Context context, String name, 
       CursorFactory factory, int version) { 
      super(context, name, factory, version); 
     } 

     @Override 
     public void onCreate(SQLiteDatabase db) { 
      // TODO Auto-generated method stub 
      db.execSQL(SCRIPT_CREATE_DATABASE); 
     } 

     @Override 
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
      // TODO Auto-generated method stub 

     } 

    } 

} 

Mein Punkt ist, wie Benutzerliste Zeilen für Benachrichtigungen hinzufügen, es auch in der Datenbank und später eingesetzt werden soll, wenn Die Aktivität wird gestartet, die gespeicherten Benachrichtigungsdaten müssen angezeigt werden und später wird das Löschen aus der Listview und aus der Datenbank implementiert.

Tabelle sollte folgende Spalten enthalten:

---

| ID | NAME | NUMMER | DATUM | ZEIT |

---

Wenn jemand mir mit Beispielcode helfen oder diesen Code für den Erfolg umgestalten kann. Meine Fähigkeiten in der Datenbank sind wirklich schwach .. es wird anerkennend sein. Danke

cmon Jungs Ich brauche wirklich Hilfe in diesem bitte.

Fehler

07-16 11:35:58.140: E/AndroidRuntime(5252): FATAL EXCEPTION: main 
07-16 11:35:58.140: E/AndroidRuntime(5252): Process: org.avatarsipphone.sipua, PID: 5252 
07-16 11:35:58.140: E/AndroidRuntime(5252): java.lang.RuntimeException: Unable to resume activity {org.avatarsipphone.sipua/org.avatarsipphone.sipua.ui.noticall}: java.lang.IllegalStateException: trying to requery an already closed cursor android.database.sqlite.SQLiteCursor@520f4d5 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3103) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1388) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.os.Handler.dispatchMessage(Handler.java:102) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.os.Looper.loop(Looper.java:148) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.ActivityThread.main(ActivityThread.java:5417) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at java.lang.reflect.Method.invoke(Native Method) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
07-16 11:35:58.140: E/AndroidRuntime(5252): Caused by: java.lang.IllegalStateException: trying to requery an already closed cursor android.database.sqlite.SQLiteCursor@520f4d5 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.Activity.performRestart(Activity.java:6296) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.Activity.performResume(Activity.java:6319) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3092) 
07-16 11:35:58.140: E/AndroidRuntime(5252):  ... 8 more 

Answer 1

@ Addi.Star Bitte beachten Sie folgendes Programm,

-SQLiteHelper

public static final String DATABASE_NAME="student.db"; 
public static final String TABLE_NAME="stud_info"; 
public static final String col1="ID"; 
public static final String col2="NAME"; 


public DatabaseHelper(Context context) { 
    super(context, DATABASE_NAME, null, 1); 
    //SQLiteDatabase db=this.getWritableDatabase(); 
} 

@Override 
public void onCreate(SQLiteDatabase db) { 
    db.execSQL("create table " + TABLE_NAME + " (Id INTEGER PRIMARY KEY,NAME TEXT) "); 
    Log.e("DB CREATE","DATABASE CREATE"); 
} 

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 

} 

public boolean insertData(String id,String name){ 
    SQLiteDatabase db=this.getWritableDatabase(); 
    ContentValues contex=new ContentValues(); 
    contex.put(col1,id); 
    contex.put(col2,name); 
    long result=db.insert(TABLE_NAME,null,contex); 
    if(result==-1) 
    { 
     return false; 
    }else{ 
     return true; 
    } 
} 

public Cursor getAllData() 
{ 
    SQLiteDatabase db=this.getWritableDatabase(); 
    Cursor res=db.rawQuery("select * from "+TABLE_NAME,null); 
    return res; 
} 

-und dies ist eine Funktion in der Klasse oder Adapter in dem Sie Daten von SQLite-Datenbank

  Cursor res=myDb.getAllData(); 

      if(res.getCount() == 0){ 

       ShowMessage("Error", "NOthing found"); 
       return; 
      } 

      StringBuffer strBfr=new StringBuffer(); 
      while (res.moveToNext()){ 
       strBfr.append("Id :"+ res.getString(0) + "\n"); 
       strBfr.append("Name:" + res.getString(1) + "\n"); 

      } 
      ShowMessage("Data", strBfr.toString()); 

Answer 2

offen DB mit RootExplorer Ihrer App, um zu sehen, Wenn Daten in oder nicht eingesetzt wird, kann Fehler nicht Zeilen gebührt RETUEN wenn SELECT.