无法使用EditText和Button删除SQLite数据库条目

Question

我试图实现一个方法，这样我就可以在edittext字段中输入一个值（整数），然后单击按钮删除SQLite数据库条目。但我似乎无法让它工作。

下面是DatabaseManager类中的方法：

public void deleteEntry(Integer entryid){
    SQLiteDatabase db = this.getWritableDatabase();
    db.delete("data", "entryid" + "=\"" + entryid + "\"", null);
}

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_history);

    _btnDelete = (Button) findViewById(R.id.btnDelete);
    _etDelete = (EditText) findViewById(R.id.etDelete);
    db = new DatabaseManager(this);

    _btnDelete.setOnClickListener(this);
    
    }

@Override
public void onClick(View v) {
[...]
else if (v.equals(_btnDelete)){
            Integer val = Integer.parseInt(_etDelete.getText().toString());
            db.deleteEntry(val);
        }

            <EditText
                android:id="@+id/etDelete"
                android:layout_width="match_parent"
                android:layout_height="60dp"
                android:layout_weight="1"
                android:digits="0123456789"
                android:inputType="number"
                android:hint="Enter ID to delete"/>

            <Button
                android:id="@+id/btnDelete"
                android:layout_width="180dp"
                android:layout_height="60dp"
                android:layout_weight="1"
                android:text="Delete"/>

public void onCreate(SQLiteDatabase db){

    try{
        db.execSQL("CREATE TABLE data (" +
                "entryid INTEGER PRIMARY KEY AUTOINCREMENT," +
                "name TEXT," +
                "weight INTEGER," +
                "reps INTEGER," +
                "entrytime TEXT)"
        );

Answer 1

尝试使用：-

db.delete("data", "entryid=?", new String[]{String.valueOf(entryid)});