android SQLiteConstraintException UNIQUE Constraint fehlgeschlagen

Question

Wie kann ich diese Ausnahme pleaz helfen mir helfen Ich habe Elemente zu einer Rasteransicht hinzugefügt, aber wenn ich auf das letzte Element in der Rasteransicht angeklickt diese Ausnahme erscheint das Element korrekt gelöscht, aber diese Ausnahme geworfen, was ist das falsch in meinem Code

public class MyDataBase extends SQLiteOpenHelper { 
private static final int DATABASE_VERSION = 1; 
// Database Name 
private static final String DATABASE_NAME = "contactsManager"; 
// Contacts table name 
private static final String TABLE_CONTACTS = "contacts"; 
private static final String TABLE_DELETED = "deleted"; 
// Contacts Table Columns names 
private static final String KEY_ID = "id"; 
final String KEY_NAME = "name"; 
private static final String KEY_dID = "did"; 
final String KEY_dNAME = "dname"; 
public MyDataBase(Context context) { 
    super(context, DATABASE_NAME, null, DATABASE_VERSION); 
} 

@Override 
public void onCreate(SQLiteDatabase db) { 
    String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "(" 
      + KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT UNIQUE" 
      + ")"; 
    String CREATE_DELETED_TABLE = "CREATE TABLE " + TABLE_DELETED + "(" 
      + KEY_dID + " INTEGER PRIMARY KEY," + KEY_dNAME + " TEXT UNIQUE" 
      + ")"; 

    db.execSQL(CREATE_CONTACTS_TABLE); 
    db.execSQL(CREATE_DELETED_TABLE); 
} 
@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
} 
public void AddnewContact(photos todo)// this method to add new contact 
{ 
    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues values = new ContentValues(); 
    values.put(KEY_NAME, todo.getImage()); 
    db.insert(TABLE_CONTACTS, null, values); 
    db.close(); 
} 
public void AddnewContactToDeletedTable(photos todo)// this method to add new contact 
{ 
    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues values = new ContentValues(); 
    values.put(KEY_dNAME, todo.getImage()); 
    db.insert(TABLE_DELETED, null, values); 
    db.close(); 
} 
public ArrayList<photos> getallcontacts() { 
    ArrayList<photos> contactList = new ArrayList<photos>(); 
    String selectQuery = "SELECT * FROM " + TABLE_CONTACTS; 
    SQLiteDatabase db = this.getWritableDatabase(); 
    Cursor cursor = db.rawQuery(selectQuery, null); 
    if (cursor.moveToFirst()) { 
     do { 
      photos contact = new photos(); 
      contact.setId(Integer.parseInt(cursor.getString(0))); 
      contact.setImage(cursor.getString(1)); 
      // Adding contact to list 
      contactList.add(contact); 
     } while (cursor.moveToNext()); 
    } 
    // return contact list 
    return contactList; 
} 
public void deleteContact(photos contact) { 
    int id = contact.getId(); 
    SQLiteDatabase db = this.getWritableDatabase(); 
    db.delete(TABLE_CONTACTS, KEY_ID 
      + " = " + id, null); 
    db.close(); 
} 

}

android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: contacts.name (code 2067) 
                     at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method) 
                     at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:788) 
                     at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788) 
                     at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86) 
                     at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1471) 
                     at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1341) 
                     at com.example.yasser.ahlysc.MyDataBase.AddnewContact(MyDataBase.java:55) 
                     at com.example.yasser.ahlysc.Funny$1.onResponse(Funny.java:59) 
                     at com.example.yasser.ahlysc.Funny$1.onResponse(Funny.java:48) 
                     at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60) 
                     at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30) 
                     at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99) 
                     at android.os.Handler.handleCallback(Handler.java:739) 
                     at android.os.Handler.dispatchMessage(Handler.java:95) 
                     at android.os.Looper.loop(Looper.java:211) 
                     at android.app.ActivityThread.main(ActivityThread.java:5389) 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at java.lang.reflect.Method.invoke(Method.java:372) 
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020) 
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815) 

Answer 1

ich denke, Ihr gleichen Wert eingefügt, deshalb diese Fehler zu werfen, die alternative Lösung ist, dass Sie Abfrage ersetzen können.

Try Code unten:

public void AddnewContact(photos todo)// this method to add new contact 
{ 
    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues values = new ContentValues(); 
    values.put(KEY_NAME, todo.getImage()); 
    db.replace(TABLE_CONTACTS, null, values); // change this line to your code 
    db.close(); 
} 

Abfrage ersetzen verarbeiten kann bereits vorhandene Daten ...