How to get selected chips from ChipGroup?

Question

I search a lot on internet but couldn't find the exact solution. Here is the link that i last tried from SO. Get selected Chips from a ChipGroup

I want to get selected chips from chip group when a button is clicked.

This function contain information of displaying names in RecyclerView

private void getNames() {
    List<String> names = Arrays.asList(getResources().getStringArray(R.array.names));
    int count = 0;
    for ( String name : names){
        list.add(new Names(name));
        count++;
    }
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setHasFixedSize(true);
    namesAdapter = new NamesAdapter(MainActivity.this, list);
    recyclerView.setAdapter(namesAdapter);
}

When click on RecyclerView item one chip is added into the ChipGroup here is the function

public void onItemSelected(Names name) {
    Chip chip = new Chip(this);
    chip.setText(name.getName());
    chip.setCloseIconVisible(true);
    chip.setCheckable(false);
    chip.setClickable(false);
    chip.setOnCloseIconClickListener(this);
    chipGroup.addView(chip);
    chipGroup.setVisibility(View.VISIBLE);
}

This is the image of displaying chips in ChipGroup

Function that is getting values from ChipGroup

public void getChipGroupValues(){
    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            ChipGroup chipGroup = findViewById(R.id.chipGroup);
            for (int i=0; i<chipGroup.getChildCount();i++){
                Chip chip = (Chip)chipGroup.getChildAt(i);
                Log.i("outside if ", i+ " chip = " + chip.getText().toString());
                if (chip.isChecked()){
                    Log.i("inside if ", i+ " chip = " + chip.getText().toString());
                    textView.setText(chip.getText().toString());
                }
            }
        }
    });
}

This is output

build.gradle(Module.app) detail

Elderly

https://mcmap.net/q/337006/-chipgroup-single-selection check answer here – Special

@Dajf thanks for reply. but that is something else. i want to get values from chipgroup when a button is clicked. – Elderly

maybe you can iterate through the list of added chips and retrieve the needed ones – Special

can you please help me how can i do this. – Elderly

Answer 1

Starting with the version 1.2.0 you can use the method chipGroup.getCheckedChipIds()

List<Integer> ids = chipGroup.getCheckedChipIds();
for (Integer id:ids){
      Chip chip = chipGroup.findViewById(id);
      //....
}

OLD ANSWER with 1.1.0:

currently there isn't a direct API to get the selected chips.
However you can iterate through the children of the ChipGroup and check chip.isChecked().

   ChipGroup chipGroup = findViewById(R.id.....);
   for (int i=0; i<chipGroup.getChildCount();i++){
      Chip chip = (Chip)chipGroup.getChildAt(i);
      if (chip.isChecked()){
         //this chip is selected..... 
      }
    }

Osteen

A little close this is working fine but outsite the the "if" statement i'm getting all values not insite the "if" condition. what is the purpose of this statement? – Elderly

@Elderly You question is I want to get selected chips from chip group when a button is clicked. In your OnClickListener you have to iterate through the ChipGroup and get only the selected values. The if statement is the only way to know if each chip is checked – Osteen

but in this case control is not going inside the if statement.i'm getting values outside the if statement – Elderly

@Elderly which version are you using of material components library? I've just tried the code and it works. – Osteen

i added this in dependencies "com.google.android.material:material:1.0.0" – Elderly

it is the latest stable and at the same time it was release quite 1 year ago. try the 1.1.0-alpha10 (it will become beta soon) – Osteen

i added 1.1.0-alpha 10 but results the same as before. also i updated the question for more detail – Elderly

@Elderly it seems that your chips are not selectable (and then no one is checked). Use chip.setCheckable(true); in your code and remove chip.setClickable(false); – Osteen

Let us continue this discussion in chat. – Elderly

Helpful... Thanks – Eulogize

Will this work even when you added chip to the group during runtime? What will be their id? – Chamorro

I think adding tag can be a good alternative for runtime GroupChip inflation – Chamorro

Answer 2

the solution I used in Kotlin with data binding

mBinding?.chipGroup?.children
            ?.toList()
            ?.filter { (it as Chip).isChecked }
            ?.forEach { //here are your selected chips as 'it' }

And here is how I got just titles

mBinding?.chipGroup?.children
            ?.toList()
            ?.filter { (it as Chip).isChecked }
            ?.joinToString(", ") { (it as Chip).text }

Codex

Answer 3

Get selected chip's text in a chip group

To get selected chip's text from chipgroup, you can use this one liner in Kotlin:

val selectedChipText = parentChipGroup.findViewById<Chip>(parentChipGroup.checkedChipId).text.toString()

Impressionism

Or if you have populated the tag variable you could use that, like: siteTypeId = registerCardChipGroupSiteTypes .findViewById<Chip>(registerCardChipGroupSiteTypes.checkedChipId).tag.toString().toLong() – Parfleche

Answer 4

I used below mentioned method to detect the selected chips in chipGroup.

for (chipTitle in stringList) {
    val chip = Chip(chipGroup.context)
    chip.text = chipTitle
    chip.tag = chipTitle
    chip.isClickable = true
    chip.isCheckable = true
    chip.setOnCheckedChangeListener { _, isChecked ->
        if (isChecked){
            Log.e(TAG, chipTitle)
        }
    }
    chipGroup.addView(chip)
}
chipGroup.isSingleSelection = true

Excellent

Answer 5

chip_group.setOnCheckedStateChangeListener(new ChipGroup.OnCheckedStateChangeListener() {
    @Override
    public void onCheckedChanged(@NonNull ChipGroup group, @NonNull List<Integer> checkedIds) {

        List<Integer> ids = group.getCheckedChipIds();
        for (Integer id:ids){
            Chip chip = group.findViewById(id);
            Toast.makeText(BottomActivity.this, chip.getText(), Toast.LENGTH_SHORT).show();

        }


    }
});

Hypogene

Answer 6

If you know the id of select chip then check as

 if (binding.chipGroup.checkedChipId == binding.chipOtherTip.id) 
 {
     showMessage(getString(R.string.tips_amount), binding.root, Color.RED)
     return@setOnClickListener
 }

Narcolepsy