Fetching multiple dictionaries into single ArrayList-CodePudding

            String Nname = firstName.getText().toString();
            String Lname = lastName.getText().toString();
            String Mobile = mobile.getText().toString();
            String EMail = email.getText().toString();
            String DOB = dob.getText().toString();
            String Addr = addr.getText().toString();

            final HashMap<String,String> dictionary1 = new HashMap();
            dictionary1.put("firstName",Nname);
            dictionary1.put("lastName",Lname);
            dictionary1.put("Mobile",Mobile);
            dictionary1.put("Email",EMail);
            dictionary1.put("DOB",DOB);
            dictionary1.put("Address",Addr);

            ArrayList<HashMap<String, String>> Employee = new ArrayList<>();
            Employee.add(dictionary1);

            System.out.println(Employee);

When printed out:

Employee Details[{firstName=Sukumar, lastName=S, Email=yy@gmail.com, Address=hhh, DOB=5-7-95, Mobile=7854213799}]

For next entries it will take another separate arraylist

Employee Details[{firstName=Xyz, lastName=uu, Email=yyy, Address=yyy, DOB=yyy, Mobile=3333333}]

I need these two in a single ArrayList like

Emplyee detaills[{{firstName=Sukumar, lastName=S, Email=yy@gmail.com, Address=hhh, DOB=5-7-95, Mobile=7854213799},{firstName=Xyz, lastName=uu, Email=yyy, Address=yyy, DOB=yyy, Mobile=3333333}]

CodePudding user response：

ive tried it and it worked fine for me.

        String Nname = "Zack";
        String Lname = "Mar";
        ArrayList<HashMap<String, String>> Employee = new ArrayList<>();

        final HashMap<String,String> dictionary1 = new HashMap();
        for (int i = 0; i < 3; i  ){
            dictionary1.put("firstName",Nname);
            dictionary1.put("lastName",Lname);
            Employee.add(dictionary1);
        }


        System.out.println(Employee);

printes out:

[{firstName=Zack, lastName=Mar}, {firstName=Zack, lastName=Mar}, {firstName=Zack, lastName=Mar}]

Careful if you loop the whole code when you get another entry you will create a new array list here: ArrayList<HashMap<String, String>> Employee = new ArrayList<>(); and will throw the previous away.

CodePudding user response：

If above code is in setOnCLicklistener then Your logic is wrong. Because you are always initialize new array and add element on it.

Please do as follow:

ArrayList<HashMap<String, String>> employees = new ArrayList<>();

button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    String Nname = firstName.getText().toString();
                    String Lname = lastName.getText().toString();
                    String Mobile = mobile.getText().toString();
                    String EMail = email.getText().toString();
                    String DOB = dob.getText().toString();
                    String Addr = addr.getText().toString();

                    final HashMap<String,String> dictionary1 = new HashMap();
                    dictionary1.put("firstName",Nname);
                    dictionary1.put("lastName",Lname);
                    dictionary1.put("Mobile",Mobile);
                    dictionary1.put("Email",EMail);
                    dictionary1.put("DOB",DOB);
                    dictionary1.put("Address",Addr);

                    employees.add(dictionary1);

                    System.out.println(employees);
                }
            });

initialize your arrayList out side the setOnClickListner.