Here is my activity code:-
class SelectCoursesActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_select_courses)
all_courses.setOnCheckedChangeListener { _, _ ->
if (all_courses.isChecked) {
scienceCourses()
artsCourses()
commerceCourses()
all_science.isChecked = true
all_arts.isChecked = true
all_commerce.isChecked = true
} else {
scienceCourses()
artsCourses()
commerceCourses()
all_science.isChecked = false
all_arts.isChecked = false
all_commerce.isChecked = false
}
}
all_science.setOnCheckedChangeListener { _, _ ->
all_courses.isChecked =
all_science.isChecked && all_arts.isChecked && all_commerce.isChecked
}
all_arts.setOnCheckedChangeListener { _, _ ->
all_courses.isChecked =
all_science.isChecked && all_arts.isChecked && all_commerce.isChecked
}
all_commerce.setOnCheckedChangeListener { _, _ ->
all_courses.isChecked =
all_science.isChecked && all_arts.isChecked && all_commerce.isChecked
}
}
private fun commerceCourses() {
all_commerce.setOnCheckedChangeListener { _, _ ->
if (all_commerce.isChecked) {
accountancy.isChecked = true
businessStudies.isChecked = true
physicalEducation.isChecked = true
} else {
accountancy.isChecked = false
businessStudies.isChecked = false
physicalEducation.isChecked = false
}
}
accountancy.setOnCheckedChangeListener { _, _ ->
all_commerce.isChecked =
accountancy.isChecked && businessStudies.isChecked && physicalEducation.isChecked
}
businessStudies.setOnCheckedChangeListener { _, _ ->
all_commerce.isChecked =
accountancy.isChecked && businessStudies.isChecked && physicalEducation.isChecked
}
physicalEducation.setOnCheckedChangeListener { _, _ ->
all_commerce.isChecked =
accountancy.isChecked && businessStudies.isChecked && physicalEducation.isChecked
}
}
private fun artsCourses() {
all_arts.setOnCheckedChangeListener { _, _ ->
if (all_arts.isChecked) {
economics.isChecked = true
history.isChecked = true
politicalScience.isChecked = true
} else {
economics.isChecked = false
history.isChecked = false
politicalScience.isChecked = false
}
}
economics.setOnCheckedChangeListener { _, _ ->
all_arts.isChecked =
economics.isChecked && history.isChecked && politicalScience.isChecked
}
history.setOnCheckedChangeListener { _, _ ->
all_arts.isChecked =
economics.isChecked && history.isChecked && politicalScience.isChecked
}
politicalScience.setOnCheckedChangeListener { _, _ ->
all_arts.isChecked =
economics.isChecked && history.isChecked && politicalScience.isChecked
}
}
private fun scienceCourses() {
all_science.setOnCheckedChangeListener { _, _ ->
if (all_science.isChecked) {
physics.isChecked = true
chemistry.isChecked = true
math.isChecked = true
} else {
physics.isChecked = false
chemistry.isChecked = false
math.isChecked = false
}
}
physics.setOnCheckedChangeListener { _, _ ->
all_science.isChecked = physics.isChecked && chemistry.isChecked && math.isChecked
}
chemistry.setOnCheckedChangeListener { _, _ ->
all_science.isChecked = physics.isChecked && chemistry.isChecked && math.isChecked
}
math.setOnCheckedChangeListener { _, _ ->
all_science.isChecked = physics.isChecked && chemistry.isChecked && math.isChecked
}
}
}
here is activity xml code:-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_margin="20dp"
tools:context=".SelectCoursesActivity">
<CheckBox
android:id="@+id/all_courses"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/all_courses"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/science"
android:textSize="20sp"
android:textStyle="bold"/>
<CheckBox
android:id="@+id/all_science"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/all"/>
<CheckBox
android:id="@+id/physics"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/physics"/>
<CheckBox
android:id="@+id/math"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/math"/>
<CheckBox
android:id="@+id/chemistry"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/chemistry"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/arts"
android:textSize="20sp"
android:textStyle="bold"/>
<CheckBox
android:id="@+id/all_arts"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/all"/>
<CheckBox
android:id="@+id/economics"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/economics"/>
<CheckBox
android:id="@+id/history"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/history"/>
<CheckBox
android:id="@+id/politicalScience"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/politicalScience"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/science"
android:textSize="20sp"
android:textStyle="bold"/>
<CheckBox
android:id="@+id/all_commerce"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/all"/>
<CheckBox
android:id="@+id/accountancy"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/accountancy"/>
<CheckBox
android:id="@+id/businessStudies"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/businessStudies"/>
<CheckBox
android:id="@+id/physicalEducation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/physicalEducation"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:backgroundTint="@null"
android:background="@drawable/circular_button"
android:textColor="@color/red_primary"
android:text="@string/save"/>
</LinearLayout>
I am trying to make to activity that if:- 1)all courses checkbox is selected then all other checkboxes should be checked and vice versa.
2)all science button is checked then all other subjects buttons should be selected and vice versa. Same for all other subjects as well.
3)if any course button is not checked then all courses button should also not be checked. Same for all subjects as well.
Now I am able to check and uncheck using all courses button. But when I am unchecking any course button I am it is not unchecking all courses button.
When any course button is checked and when I uncheck any subject it unchecks all the subjects in that course. I want to uncheck only that course checkbox and that subjet all other courses should remain checked.
Instead of direct checkboxes use recyclerView in this way:-
activity code:-
lateinit var recyclerView: RecyclerView
lateinit var adapter: CheckboxAdapter
lateinit var list3: List<RowModel>
lateinit var list1: List<RowModel>
lateinit var list2: List<RowModel>
lateinit var list4: List<RowModel>
lateinit var list: List<RowModel>
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_select_courses)
recyclerView = findViewById(R.id.trail_rv)
list1 = listOf(
RowModel(RowType.TopHeader, "", "", "", false)
)
list2 = listOf(
RowModel(RowType.Course, "", "", "Science", false),
RowModel(RowType.SubjectRow, "Physics", "", "Science", false),
RowModel(RowType.Dummy, "Physics", "Physics", "Science", false),
RowModel(RowType.SubjectRow, "Math", "", "Science", false),
RowModel(RowType.Dummy, "Math", "Math", "Science", false),
RowModel(RowType.SubjectRow, "Chemistry", "", "Science", false),
RowModel(RowType.Dummy, "Chemistry", "Chemistry", "Science", false)
)
list3 = listOf(
RowModel(RowType.Course, "", "", "Arts", false),
RowModel(RowType.SubjectRow, "Economics", "", "Arts", false),
RowModel(RowType.Dummy, "Economics", "Economics", "Arts", false),
RowModel(RowType.SubjectRow, "History", "", "Arts", false),
RowModel(RowType.Dummy, "History", "History", "Arts", false),
RowModel(RowType.SubjectRow, "Political Science", "", "Arts", false),
RowModel(RowType.Dummy, "Political Science", "Political Science", "Arts", false)
)
list4 = listOf(
RowModel(RowType.Course, "", "", "Commerce", false),
RowModel(RowType.SubjectRow, "Accountancy", "", "Commerce", false),
RowModel(RowType.Dummy, "Accountancy", "Accountancy", "Commerce", false),
RowModel(RowType.SubjectRow, "Business Studies", "", "Commerce", false),
RowModel(RowType.Dummy, "Business Studies", "Business Studies", "Commerce", false),
RowModel(RowType.SubjectRow, "Physical Education", "", "Commerce", false),
RowModel(RowType.Dummy, "Physical Education", "Physical Education", "Commerce", false)
)
list = list1 + list2 + list4 + list3
adapter = CheckboxAdapter(this, list)
adapter.setList(list)
recyclerView.adapter = adapter
recyclerView.layoutManager = LinearLayoutManager(this)
findViewById<Button>(R.id.showTextBtn).setOnClickListener {
val checkboxesValue: String = selectedCheckboxes.joinToString(separator = ";\n")
findViewById<TextView>(R.id.ShowTextView).text = checkboxesValue
}
findViewById<Button>(R.id.clearTextBtn).setOnClickListener {
selectedCheckboxes.clear()
adapter.setList(list)
}
}
}
adapter code:-
class CheckboxAdapter(
private val context: Context,
var productList: List<RowModel>,
) : RecyclerView.Adapter<CheckboxAdapter.TableViewHolder>() {
override fun onBindViewHolder(holder: TableViewHolder, position: Int) {
val item = productList[position]
holder.checkBox.setOnCheckedChangeListener(null)
holder.checkBox.isChecked = item.isChecked
val params: ViewGroup.MarginLayoutParams =
holder.checkBox.layoutParams as ViewGroup.MarginLayoutParams
when (item.rowType) {
RowType.TopHeader -> {
holder.checkBox.text = "All Courses"
holder.checkBox.visibility = View.VISIBLE
holder.checkBox.typeface = Typeface.DEFAULT_BOLD
params.setMargins(0, 0, 0, 0)
holder.checkBox.layoutParams = params
}
RowType.Course -> {
holder.checkBox.visibility = View.VISIBLE
holder.checkBox.text = item.course
holder.checkBox.typeface = Typeface.DEFAULT_BOLD
params.setMargins(20, 0, 0, 0)
holder.checkBox.layoutParams = params
}
RowType.SubjectRow -> {
holder.checkBox.visibility = View.VISIBLE
holder.checkBox.text = item.subjectName
holder.checkBox.typeface = Typeface.DEFAULT
params.setMargins(convertDpToPixel(40f, context).toInt(), 0, 0, 0)
holder.checkBox.layoutParams = params
}
RowType.Dummy -> {
holder.checkBox.visibility = View.GONE
holder.checkBox.text = item.subjectName
holder.checkBox.typeface = Typeface.DEFAULT
params.setMargins(convertDpToPixel(60f, context).toInt(), 0, 0, 0)
holder.checkBox.layoutParams = params
}
}
holder.checkBox.setOnCheckedChangeListener { _, isChecked ->
if (item.isChecked != isChecked) {
item.isChecked = isChecked
when (item.rowType) {
RowType.TopHeader -> {
val indexList = mutableListOf<Int>()
productList.filter { it.rowType != RowType.TopHeader }.forEach {
it.isChecked = isChecked
indexList.add(productList.indexOf(it))
}
indexList.forEach {
notifyItemChanged(it)
}
}
RowType.Course -> {
val indexList = mutableListOf<Int>()
productList.filter { it.rowType == RowType.SubjectRow && it.course == item.course }
.forEach {
it.isChecked = isChecked
indexList.add(productList.indexOf(it))
}
productList.filter { it.rowType == RowType.Dummy && it.course == item.course }
.forEach {
it.isChecked = isChecked
indexList.add(productList.indexOf(it))
}
indexList.forEach {
notifyItemChanged(it)
}
isAllItemsSameStatus() //for header
}
RowType.SubjectRow -> {
val indexList = mutableListOf<Int>()
productList.filter { it.rowType == RowType.Dummy && it.subjectName == item.subjectName }
.forEach {
it.isChecked = isChecked
indexList.add(productList.indexOf(it))
}
indexList.forEach {
notifyItemChanged(it)
}
isAllItemsSameStatus()
}
}
}
}
when (item.rowType) {
RowType.Course -> {
if (holder.checkBox.isChecked)
selectedCheckboxes.add(holder.checkBox.text.toString())
if (!holder.checkBox.isChecked) {
selectedCheckboxes.remove(holder.checkBox.text.toString())
}
}
RowType.Dummy -> {
if (holder.checkBox.isChecked)
selectedCheckboxes.add(holder.checkBox.text.toString())
if (!holder.checkBox.isChecked) {
selectedCheckboxes.remove(holder.checkBox.text.toString())
}
}
}
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TableViewHolder {
return TableViewHolder(
LayoutInflater.from(context).inflate(
R.layout.checkbox,
parent,
false
)
)
}
class TableViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val checkBox: CheckBox = itemView.findViewById(R.id.Checkbox)
}
override fun getItemCount() = productList.size
fun setList(profiles: List<RowModel>) {
productList = profiles
notifyDataSetChanged()
}
private fun isAllItemsSameStatus(cat: String? = null) {
val row: RowModel
var isChecked: Boolean = true
var position: Int = 0
if (cat != null) {
val catRow = productList.find { it.rowType == RowType.Course && it.course == cat }
catRow?.let {
val subList =
productList.filter { it.course == it.course && it.rowType == RowType.SubjectRow }
isChecked = subList.filter { it.isChecked }.size == subList.size
position = productList.indexOf(catRow)
}
if (catRow == null)
return
else
row = catRow
} else {
row = productList[0]
isChecked =
productList.filter { it.rowType != RowType.TopHeader && it.isChecked }.size == productList.size - 1
position = 0
}
updateHeader(row, isChecked, position)
}
private fun isAllSubjectItemsSameStatus(cat: String? = null) {
val row: RowModel
var isChecked: Boolean = true
var position: Int = 0
if (cat != null) {
val catRow =
productList.find { it.rowType == RowType.SubjectRow && it.subjectName == cat }
catRow?.let {
val subList =
productList.filter { it.subjectName == it.subjectName && it.rowType == RowType.Dummy }
isChecked = subList.filter { it.isChecked }.size == subList.size
position = productList.indexOf(catRow)
}
if (catRow == null)
return
else
row = catRow
} else {
row = productList[0]
isChecked =
productList.filter { it.rowType != RowType.TopHeader && it.isChecked }.size == productList.size - 1
position = 0
}
updateHeader(row, isChecked, position)
}
private fun updateHeader(item: RowModel, isChecked: Boolean, position: Int) {
if (item.isChecked != isChecked) // no need to update if no change
{
item.isChecked = isChecked
notifyItemChanged(position)
}
}
private fun convertDpToPixel(dp: Float, context: Context): Float {
return dp * (context.resources
.displayMetrics.densityDpi.toFloat() / DisplayMetrics.DENSITY_DEFAULT)
}
companion object {
var selectedCheckboxes: ArrayList<String> = ArrayList()
}
}
Model data class code:-
data class SubjectRowModel (
val SubjectRowType: SubjectRowType,
val subjectName: String,
val dummyName: String,
val course: String,
var isChecked: Boolean = true)
enum class SubjectRowType(val id : Int) {
TopHeader(1),
Course(2),
SubjectRow(3),
Dummy(4);
}