I'm adding view dynamically in fragment which works fine but when I'm navigating to another fragment and return back to first fragment all layout is set as initial one (dynamically added view is not present). So here I have to save UI state untill my fragment's parent activity is not closed.
Initial Fragment Class Code
package com.hp.billingapp.ui.billfragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.fragment.app.Fragment;
import androidx.navigation.Navigation;
import com.google.android.material.snackbar.Snackbar;
import com.google.android.material.textfield.TextInputEditText;
import com.hp.billingapp.R;
import com.hp.billingapp.ui.BillingActivity;
public class OrderFragment extends Fragment {
Button pay, buttonAdd;
LinearLayout itemLayout;
Integer item = 1, emptyChk;
Float total;
ConstraintLayout constraintLayout;
Integer layoutId;
public OrderFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_order, container, false);
pay = root.findViewById(R.id.pay);
pay.setOnClickListener(v -> {
datafetch(root);
});
itemLayout = root.findViewById(R.id.itemLayout);
constraintLayout = root.findViewById(R.id.constraintLayout);
buttonAdd = root.findViewById(R.id.button);
buttonAdd.setOnClickListener(v -> addView());
return root;
}
private void datafetch(View root) {
Log.i("heetcount", String.valueOf(itemLayout.getChildCount()));
emptyChk = 0;
total = (float) 0;
for (int i = 0; i < itemLayout.getChildCount(); i++) {
View itemView = itemLayout.getChildAt(i);
TextView number = itemView.findViewById(R.id.number);
AutoCompleteTextView name = itemView.findViewById(R.id.namet);
TextInputEditText price = itemView.findViewById(R.id.pricet);
AutoCompleteTextView type = itemView.findViewById(R.id.typet);
if (name.getText().toString().isEmpty() || price.getText().toString().isEmpty() ||
type.getText().toString().isEmpty()) {
Snackbar.make(constraintLayout, "Please fill the required fields",
Snackbar.LENGTH_SHORT).show();
emptyChk += 1;
} else {
total = total + Float.parseFloat(price.getText().toString().trim());
}
}
if (emptyChk == 0) {
Log.i("heettotal", total.toString());
OrderFragmentDirections.ActionOrderFragmentToBillingFragment action =
OrderFragmentDirections.actionOrderFragmentToBillingFragment(total);
Navigation.findNavController(root).navigate(action);
((BillingActivity) getActivity()).heading("b");
}
}
private void addView() {
item = item + 1;
String text = "Item " + item;
View itemView = getLayoutInflater().inflate(R.layout.item_layout, null, false);
TextView number = itemView.findViewById(R.id.number);
ImageButton remove = itemView.findViewById(R.id.remove);
AutoCompleteTextView nametiet = itemView.findViewById(R.id.namet);
AutoCompleteTextView typetiet = itemView.findViewById(R.id.typet);
TextInputEditText pricetiet = itemView.findViewById(R.id.pricet);
number.setText(text);
remove.setOnClickListener(v -> removeView(itemView));
itemLayout.addView(itemView);
}
private void removeView(View itemView) {
Log.i("heetview", String.valueOf(itemView));
itemLayout.removeView(itemView);
}
}
Initial Fragment Layout Code
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/backdropcenter"
android:theme="@style/Theme.MaterialComponents.NoActionBar"
tools:context=".ui.billfragment.OrderFragment">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="80dp"
android:overScrollMode="never">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="@+id/itemLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include layout="@layout/item_layout" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="@+id/button"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="50dp"
android:background="@drawable/allcornerround"
android:fontFamily="@font/montserrat"
android:text="Add Item"
android:textAllCaps="false"
android:textSize="18sp"
android:textStyle="bold" />
<Button
android:id="@+id/pay"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:background="@drawable/allcornerround"
android:fontFamily="@font/montserrat"
android:text="Pay"
android:textAllCaps="false"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
Dynamically Added Layout 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"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:theme="@style/Theme.MaterialComponents.NoActionBar">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:orientation="horizontal">
<TextView
android:id="@+id/number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:text="Item 1"
android:textColor="#191b20"
android:textSize="18sp"
android:textStyle="bold" />
<ImageButton
android:id="@+id/remove"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3"
android:background="#00000000"
android:src="@drawable/ic_close"
app:tint="#191b20" />
</LinearLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/nametil"
style="@style/InputDropDown"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:elevation="5dp"
android:hint="Item Name"
app:boxBackgroundMode="filled"
app:endIconMode="dropdown_menu"
app:endIconTint="#AA191b20"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/nametil">
<AutoCompleteTextView
android:id="@+id/namet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="@font/montserrat"
android:gravity="center_vertical"
android:inputType="none"
android:textColor="#191b20"
android:textCursorDrawable="@drawable/cursor"
android:textSize="18sp" />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/typetil"
style="@style/InputDropDown"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:elevation="5dp"
android:hint="Type"
app:boxBackgroundMode="filled"
app:endIconMode="dropdown_menu"
app:endIconTint="#AA191b20"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/nametil">
<AutoCompleteTextView
android:id="@+id/typet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="@font/montserrat"
android:gravity="center_vertical"
android:inputType="none"
android:textColor="#191b20"
android:textCursorDrawable="@drawable/cursor"
android:textSize="18sp" />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/pricetil"
style="@style/InputText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:elevation="5dp"
android:hint="Price"
app:boxBackgroundMode="filled"
app:endIconMode="clear_text"
app:endIconTint="#AA191b20">
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/pricet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fontFamily="@font/montserrat"
android:gravity="center_vertical"
android:inputType="numberDecimal"
android:textColor="#191b20"
android:textCursorDrawable="@drawable/cursor"
android:textSize="18sp" />
</com.google.android.material.textfield.TextInputLayout>
</LinearLayout>
Snaps of issue
Initial state when first fragment starts