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Simple RecyclerView example with filter option in Android

Hi Guys, Maybe you all are expert in terms of using RecyclerView in android. This blog is simple example for using filter option with RecyclerView adapter. As for now you will instantiate RecyclerView and set the adapter to RecyclerView as following way. RecyclerView list = (RecyclerView) findViewById(R.id.list); list.setLayoutManager(new LinearLayoutManager(this)); list.setHasFixedSize(true); ArrayList&ltNumber&gt numbers = new ArrayList&lt&gt(); String ONEs[] = {"ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN"}; String TENs[] = {"ZERO", "TEN", "TWENTY", "THIRTY", "FOURTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY", "HUNDRED"}; String HUNDREDS[] = {"ZERO", "HUNDRED", "TWO HUND
50 comments

Simple recyclerview example with checkbox in Android

Good morning to all, Those who all tried RecyclerView adapter with CheckBox, you all may find the issue on dynamic data change in RecyclerView. This will help you to resolve the issue in very simple way.

Video output of this project

So how to achieve this task effectively?

Simple, I hope you all tried with list objects only. Surely this object will have the boolean variable to know whether this object is selected or not. So now while we are select one object with the help of recyclerview and scroll down and up recyclerview adapter, the checked checkbox's position may change, this reflects on our object also, So how to avaid this issue.

simple, In our recyclerview adapter's onBindViewHolder method, first set the checkedOnChangeListener of checkbox to null, and then set whether this object is selected or not to checkbox, and then add the checkedOnChangeListener to the checkbox. That's all. Issue solved. 

onBindViewHolder
will be look like 
    @Override
    public void onBindViewHolder(final ViewHolder holder, int position) {

        //in some cases, it will prevent unwanted situations
        holder.checkbox.setOnCheckedChangeListener(null);

        //if true, your checkbox will be selected, else unselected
        holder.checkbox.setChecked(numbers.get(position).isSelected());

        holder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                numbers.get(holder.getAdapterPosition()).setSelected(isChecked);
            }
        });
    }
here 
numbers
is list of objects.

I hope this post is useful to you. kindly share your feedback as comment here.


Simple RecyclerView example in Android

Simple RecyclerView example with filter option in Android

Dynamically change ListView to GridView and Vice Versa using RecyclerView

Source code on GitHub



Thank You



Comments

  1. c4916 December 2019 at 17:01

    Nice one. I also recommend this post too for beginners. yes you can scroll fearlessly. https://androidride.com/recyclerview-android-simple-tutorial-adapter-differences-listview-checkbox-example/

    I loved their listiview vs RecyclerView comparison also.

    ReplyDelete
  2. c4916 December 2019 at 17:01

    https://androidride.com/recyclerview-android-simple-tutorial-adapter-differences-listview-checkbox-example/

    ReplyDelete
  3. DLG Store23 February 2020 at 23:10

    What is numbers ?

    ReplyDelete
  4. Anonymous16 September 2021 at 03:59

    Wait for 10 minutes, then take 4 of the Clean Capsules with 12 ounces of water. Wait another 10 minutes and take 4 more capsules with an additional 12 ounces of water. Continue this process until you've taken all 12 Clean Capsules. From start to finish, this process should take around 45 minutes total, with the results lasting up to 6 hours. Detox drinks are another excellent option to quickly rid your system of toxins for drug testing purposes. They can be helpful to stimulate the body's detoxification process and create a period where a test would not detect the presence of weed.

    ReplyDelete
  5. Askonlinestore18 September 2024 at 04:02

    Actually it is wonderful post. I do like your firm workings and be grateful for your idea. I can pass on you another site where you can get information.
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    ReplyDelete

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