Fragment Not Showing in the Activity

by Code Error
Posted By: Anonymous

I have tried everything but i am not able to find the bug in the code what was it, i want to show the fragment in the activity but the fragment is not showing, What i have tried is

followed instruction as per https://developer.android.com/guide/fragments/create#kotlin, result = not worked.

Watched and followed 6 to 10 youtube tutorials, result = not worked.

tried to find the solution on the google, result = tried and checked everything as per every single article but not worked.
Tried different layouts in the XML layout file like as Fragment, FrameLayout, <androidx.fragment.app.FragmentContainerView>

i was learning the java for android dvelopment but when i know that the primary language for android development is kotlin then i just move to the kotlin.

So i am very new to kotlin please tell me what is the problem why the fragment is not working.

MainActivity

package com.ak_applications.kottry.screens

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import com.ak_applications.kottry.R

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

       val btnGo: Button = findViewById(R.id.btn_go)

       btnGo.setOnClickListener {
           startActivity(Intent(this, login_signup::class.java))
       }
    }
}

MainActiviy.Layout

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    tools:context=".screens.MainActivity"
    android:background="@drawable/blue_and_purple">

    <com.google.android.material.button.MaterialButton
        style="@style/Widget.MaterialComponents.Button.OutlinedButton"
        android:id="@+id/btn_go"
        android:layout_width="220dp"
        android:layout_height="60dp"
        app:strokeColor="@color/white"
        app:strokeWidth="1dp"
        android:text="GO"
        android:textColor="@color/white"
        android:textSize="24sp"
        app:elevation="34dp"
        app:rippleColor="@color/white"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>
    
</androidx.constraintlayout.widget.ConstraintLayout>

Class in which i want to show the fragment.

Layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <FrameLayout
        android:id="@+id/frag_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"/>
    
</LinearLayout>

Class

package com.ak_applications.kottry.screens

import android.os.Bundle
import android.os.PersistableBundle
import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.commit
import com.ak_applications.kottry.R
import com.ak_applications.kottry.screens.fragments.login_fragment

class login_signup: AppCompatActivity(R.layout.login_signup_layout) {
    
    override fun onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
        super.onCreate(savedInstanceState, persistentState)
        
        if (savedInstanceState == null) {
            supportFragmentManager.commit {
                setReorderingAllowed(true)
                add(R.id.frag_container, login_fragment())
            }
        }
    }
}

The Fragment that i want to show

Fragment Layout

<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".screens.fragments.login_fragment"
    android:background="@color/black">

    <TextView
        android:id="@+id/txt_login"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Login"
        android:textAllCaps="false"
        android:fontFamily="@font/raleway_semi_bold"
        android:textColor="@color/white"
        android:textSize="32sp"
        android:letterSpacing="0.1"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginStart="20dp"
        android:layout_marginTop="10dp"/>

    <TextView
        android:id="@+id/txt_login_des"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter Your Credintials to get access"
        android:textColor="#9CFFFFFF"
        android:fontFamily="@font/raleway_medium"
        android:textSize="18sp"
        app:layout_constraintTop_toBottomOf="@id/txt_login"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginTop="15dp"
        android:layout_marginStart="20dp"/>

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/user_id_feild"
        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginStart="20dp"
        android:layout_marginEnd="20dp"
        android:layout_marginTop="100dp"
        app:boxStrokeColor="@color/white"
        app:boxStrokeErrorColor="#FF0000"
        app:boxStrokeWidth="1dp"
        app:boxCornerRadiusTopStart="8dp"
        app:boxCornerRadiusBottomEnd="8dp"
        app:boxCornerRadiusBottomStart="8dp"
        app:boxCornerRadiusTopEnd="8dp"
        app:startIconDrawable="@drawable/user_active_state"
        app:layout_constraintTop_toBottomOf="@id/txt_login_des"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintBottom_toBottomOf="@id/password_feild"
        app:layout_constraintVertical_bias="0">

        <com.google.android.material.textfield.TextInputEditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:hint="Email or User name or Phone Number"
            android:textColorHint="#74FFFFFF"
            android:padding="10dp"/>

    </com.google.android.material.textfield.TextInputLayout>

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/password_feild"
            style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:layout_marginTop="30dp"
            app:boxStrokeColor="@color/white"
            app:boxStrokeErrorColor="#FF0000"
            app:boxStrokeWidth="1dp"
            app:boxCornerRadiusTopStart="8dp"
            app:boxCornerRadiusBottomEnd="8dp"
            app:boxCornerRadiusBottomStart="8dp"
            app:boxCornerRadiusTopEnd="8dp"
            app:startIconDrawable="@drawable/lock_unlock_anime"
            app:layout_constraintTop_toBottomOf="@id/user_id_feild"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintBottom_toTopOf="@id/btn_signIn"
            app:layout_constraintVertical_bias="1">

            <com.google.android.material.textfield.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:hint="•••••••••••••"
                android:textColorHint="#74FFFFFF"
                android:padding="10dp"/>

        </com.google.android.material.textfield.TextInputLayout>


        <com.google.android.material.button.MaterialButton
            android:id="@+id/btn_signIn"
            style="@style/Widget.MaterialComponents.Button.OutlinedButton"
            android:layout_width="250dp"
            android:layout_height="60dp"
            android:text="Sign In"
            android:backgroundTint="@color/white"
            android:textAllCaps="false"
            android:textColor="@color/black"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintTop_toBottomOf="@id/password_feild"
            app:layout_constraintBottom_toTopOf="@id/fbtn_google"
            app:strokeColor="@color/white"
            app:strokeWidth="1dp"
            app:rippleColor="@color/black"/>

        <com.google.android.material.button.MaterialButton
            android:id="@+id/btn_register"
            style="@style/Widget.MaterialComponents.Button.OutlinedButton"
            android:layout_width="250dp"
            android:layout_height="60dp"
            android:text="Register"
            android:textAllCaps="false"
            android:textColor="@color/white"
            app:layout_constraintBottom_toTopOf="@id/fbtn_google"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintVertical_bias="0"
            android:layout_marginTop="10dp"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/btn_signIn"
            app:rippleColor="@color/black"
            app:strokeColor="@color/white"
            app:strokeWidth="1dp" />

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fbtn_google"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:backgroundTint="#6F000000"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:elevation="35dp"
            app:borderWidth="0dp"
            android:layout_marginBottom="50dp"
            android:src="@drawable/google_cute_icon"
            android:tintMode="add"/>

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fbtn_facebook"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:backgroundTint="@color/black"
            android:background="@drawable/icons8_facebook"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintRight_toLeftOf="@id/fbtn_google"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintHorizontal_bias="1"
            android:layout_marginEnd="15dp"
            app:elevation="35dp"
            app:borderWidth="0dp"
            android:layout_marginBottom="50dp"
            android:src="@drawable/icons8_facebook"
            android:tintMode="add"
            app:maxImageSize="30dp"/>

        <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fbtn_twitter"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:backgroundTint="#6F000000"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintLeft_toRightOf="@id/fbtn_google"
            app:layout_constraintHorizontal_bias="0"
            android:layout_marginStart="15dp"
        app:elevation="35dp"
        app:borderWidth="0dp"
        android:layout_marginBottom="50dp"
        android:src="@drawable/google_cute_icon"
        android:tintMode="add"/>


</androidx.constraintlayout.widget.ConstraintLayout>

Fragment Class

package com.ak_applications.kottry.screens.fragments

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.View
import com.ak_applications.kottry.R

class login_fragment : Fragment(R.layout.fragment_login_fragment) {

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
    }
}

Plase help me out i don’t understand what is the issue with my code.

Solution

In login_signup activity, change the onCreate() from

override fun onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?)

to

override fun onCreate(savedInstanceState: Bundle?)
Answered By: Anonymous

Related Articles

Disclaimer: This content is shared under creative common license cc-by-sa 3.0. It is generated from StackExchange Website Network.

Leave a Reply

Your email address will not be published. Required fields are marked *