java - android 中的错误 - SQLite

Question

我正在尝试查询我的数据库以返回输入到文本框中的名称。我已经能够查看数据库中的所有项目，但我想使用文本框搜索名称。当我输入姓名并点击搜索按钮时，log cat 显示错误“没有这样的列:john:编译时:SELECT name, gender, height, age, hair FROM details WHERE name= john ORDER by name.

 private void findRecords(){
    EditText find = (EditText)findViewById(R.id.nameSearch);
    EditText name = (EditText)findViewById(R.id.nameFound);
    EditText gender = (EditText)findViewById(R.id.genderFound);
    String s = find.getText().toString();
    //Long l = Long.parseLong(s);
    DatabaseClass hon = new DatabaseClass(this);

    String returnedName = hon.getName(s);
    String returnedGender = hon.getGender(s);

    name.setText(returnedName);
    gender.setText(returnedGender);

}


    public String getName(String s) {
    // TODO Auto-generated method stub
    String[] columns = new String[] {NAME_COLUMN, GENDER_COLUMN, HEIGHT_COLUMN, AGE_COLUMN, HAIR_COLUMN};
    Cursor c = sherlockdb.query(TABLE_NAME, columns, NAME_COLUMN +"="+ s, null, null, null, NAME_COLUMN);
    if (c != null){
        c.moveToFirst();
        String name = c.getString(1);
        return name;
    }
    return null;
}

请帮忙

Answer 1

替换:

Cursor c = sherlockdb.query(TABLE_NAME, columns, NAME_COLUMN +"="+ s, null, null, null, NAME_COLUMN);

与:

String[] args={s};
Cursor c = sherlockdb.query(TABLE_NAME, columns, NAME_COLUMN +"=?", args, null, null, NAME_COLUMN);