Question

您可以在删除项目中查找Android中的SQLite数据列表我的问题是，当我选择它时，我尝试删除一个项目并确认一个对话框我想我甚至不明白如何使用删除方法表格的id这是我的代码请帮助我的工作...

数据库

public class ClientDataAdapter {
    private static final  String DATABASE_NAME = "clientbase.db";
    private static final int DATABASE_VERSION = 1;
    static final String TABLE_CLIENT = "clienttable";
    private static Context context;
    static SQLiteDatabase dc;
private SQLiteStatement insertStmt;

    private static final String INSERT = "insert into "
        + TABLE_CLIENT + " (nom_complet,adresse_client,numero_telephone) values (?,?,?)";

    public ClientDataAdapter(Context context) {
        ClientDataAdapter.context = context;
        OpenHelper openHelper = new OpenHelper(ClientDataAdapter.context);
        ClientDataAdapter.dc = openHelper.getWritableDatabase();
        this.insertStmt = ClientDataAdapter.dc.compileStatement(INSERT);
       }

    public long insert(String nom_complet,String adresse_client,String numero_telephone) {
        this.insertStmt.bindString(1, nom_complet);
        this.insertStmt.bindString(2, adresse_client);
        this.insertStmt.bindString(3, numero_telephone);
        return this.insertStmt.executeInsert();
    }

    public void deleteAll() {
        dc.delete(TABLE_CLIENT, null, null);
    }

    public List<String[]> selectAll()
    {

        List<String[]> list = new ArrayList<String[]>();
        Cursor cursor = dc.query(TABLE_CLIENT, new String[] { "id","nom_complet","adresse_client","numero_telephone"},
                null, null, null, null, "nom_complet asc"); 

        int x=0;
        if (cursor.moveToFirst()) {
            do {
                String[] b1=new String[]{cursor.getString(0),cursor.getString(1),cursor.getString(2),cursor.getString(3)};

                list.add(b1);

                x=x+1;
            } while (cursor.moveToNext());
        }
        if (cursor != null && !cursor.isClosed()) {
            cursor.close();
        } 
        cursor.close();

        return list;
    }


    public void delete(int id) {

        dc.delete("clienttable", "id=?", new String[] {String.valueOf(id)});
    }

    private static class OpenHelper extends SQLiteOpenHelper {

        OpenHelper(Context context) {
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase dc) {
            dc.execSQL("CREATE TABLE " + TABLE_CLIENT + " (id INTEGER PRIMARY KEY, nom_complet TEXT NOT NULL, adresse_client TEXT NOT NULL, numero_telephone TEXT NOT NULL)");
        }

        @Override
        public void onUpgrade(SQLiteDatabase dc, int oldVersion, int newVersion) {
            dc.execSQL("DROP TABLE IF EXISTS " + TABLE_CLIENT);
            onCreate(dc);
        }
    }


}

为了我的倾听，请告诉我要改变什么

public class ListedesClient extends ListActivity  {

    TextView selectionc;
    public int idToModify; 
    ClientDataAdapter dm;

   String clientId;
    List<String[]> list = new ArrayList<String[]>();
    List<String[]> names2 =null ;
    String[] stg1;
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listeclients);
          dm = new ClientDataAdapter(this);
          names2 = dm.selectAll();

        stg1=new String[names2.size()]; 

        int x=0;
        String stg;

        for (String[] name : names2) {
            stg = name[1]+"         "+name[2]+ "         "+name[3];

            stg1[x]=stg;
            x++;
        }


        ArrayAdapter<String> adapter = new ArrayAdapter<String>(   
                this,android.R.layout.simple_list_item_1,   
                stg1);
        this.setListAdapter(adapter);
        selectionc=(TextView)findViewById(R.id.selectionc);

    }      

    public void onListItemClick(ListView parent, View v, final int position, long id) {

        selectionc.setText("Vous êtes sur : " + stg1[position]);

         AlertDialog.Builder builder = new AlertDialog.Builder(this)
         .setTitle("Delete Item")
         .setMessage("are you sure to delete?")
         .setPositiveButton("Yes",
                 new DialogInterface.OnClickListener() {

                     @Override
                     public void onClick(DialogInterface arg0, int arg1) {

                         dm.delete(position);



                     }
             })

         .setNegativeButton("No",
                 new DialogInterface.OnClickListener() {

                     @Override
                     public void onClick(DialogInterface dialog,
                             int which) {
                         // TODO Auto-generated method stub
                         return;
                     }
             });
     builder.show();
    }

}

Answer 1

尝试在删除后添加notifyDataSetChanged()：

dm.delete(position);
dm.notifyDataSetChanged();

删除项目列表SQLite android

1 个答案: