android realm删除对象,在android中删除Realm中的单个对象数据/行

我添加了单个用户的数据像这样：

Realm realm = Realm.getDefaultInstance();

newUser = new UserDatabase();

realm.executeTransaction(new Realm.Transaction() {

public void execute(Realm realm) {

newUser.setClassName(classSectionName);

newUser.setClassNO(classNO);

newUser.setImageUrl(imageUrl);

newUser.setRollNo(rollNO);

newUser.setSchool(school);

// and now saved the data in peresistant data like this:

realm.copyToRealm(newUser);

}

});

但我无法找到从Realm数据库中删除单个条目的方法,即使我尝试这样,它也无法正常工作.

Realm realm = Realm.getDefaultInstance();

UserDatabase tempUser = new UserDatabase();

final RealmResults students = realm.where(UserDatabase.class).findAll();

for(int i=0 ; i

final int index =i;

if((students.get(i).getUserID()).equals(prefs.getString(QRActivity.USER_ID_AFTER_LOGIN,"jpt"))&&

(students.get(i).getUserName()).equals(prefs.getString(QRActivity.USER_NAME_AFTER_LOGIN,"jpt"))){

realm.executeTransaction(new Realm.Transaction() {

public void execute(Realm realm) {

//Trying to delete a row from realm.

students.deleteFromRealm(index);

}

});

}

}

有谁有想法吗 ？