Mobile App Development

Previous Assignment: In Android Studio, create a spinner that has drop down function on it (NOT tab view). Place a scroll bar inside the dropdown of the spinner. The categories inside the spinner include: vegetable, fruit, meat, drink. Clicking on each section will pop up a fragment section below. Here, I clicked on the vegetable section, which leads me to a page displaying vegetables and their expiration dates.

Current Assignment: Create a tab view, which has Tab A and Tab B. Tab A is empty, but Tab B contains a spinner that has a drop down function on it. Place a scroll bar inside the dropdown of the spinner. The categories inside the spinner include: vegetable, fruit, meat, drink. Clicking on each section will pop up a fragment section below. Here, I clicked on the vegetable section, which leads me to a page displaying vegetables and their expiration dates.

This question was answered before in here, so you can find your solution for the new assignment with the given codes below:

https://www.chegg.com/homework-help/questions-and-answers/mobile-app-development-android-studio-create-spinner-drop-function-tab-view--place-scroll--q30248762

Note: Post XML and Java codes for both the main activity and the fragments. You only need to create the vegetable fragment, I will code the rest based on the vegetable fragment. Do not screenshot the code, please write out the code. Please TEST the code out before posting the XML and Java Codes for both the main activity and the fragments.

activity_main.xml:

xml version="1.0" encoding="utf-8"?> RelativeLayout 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=".MainActivity"> Spinner  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_centerHorizontal="true"  android:id="@+id/spinnerList"/> FrameLayout  android:layout_width="match_parent"  android:layout_height="match_parent"  android:layout_below="@+id/spinnerList"  android:layout_marginTop="4dp"  android:id="@+id/fragment" /> RelativeLayout>

veg_layout.xml:

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"  android:padding="12dp"  android:id="@+id/vegLayout"> LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal"> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="Item"  android:layout_weight="1"  android:textStyle="bold"  android:textColor="#080808"  /> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="Expired Date"  android:layout_weight="1"   android:textStyle="bold"  android:textColor="#080808"  android:gravity="end" /> LinearLayout> LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal"  android:layout_marginTop="6dp"> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="Carrot"  android:layout_weight="1"  /> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="2018-12-5"  android:layout_weight="1"  android:textAlignment="viewEnd"   /> LinearLayout> LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal"> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="Lettuce"  android:layout_weight="1"  /> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="2018-12-31"  android:layout_weight="1"  android:textAlignment="viewEnd"   /> LinearLayout> LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal"> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="Bok Choy"  android:layout_weight="1"  /> TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="2018-1-6"  android:layout_weight="1"  android:textAlignment="viewEnd"   /> LinearLayout> LinearLayout>

MainActivity.java:

package com.green.chegg; //import android.app.Fragment; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Spinner; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); List itemList=new ArrayList(); //spinner item list  itemList.add("Fruit"); itemList.add("Vegetable"); itemList.add("Meat"); itemList.add("Drink"); Spinner spinner=findViewById(R.id.spinnerList); //spinner   ArrayAdapter listAdapter=new ArrayAdapter(this,android.R.layout.simple_spinner_item,itemList); listAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(listAdapter); //setting adapter to spinner   spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { //on item select listener  @Override public void onItemSelected(AdapterView> parent, View view, int position, long id) { switch (position) { case 0://for fruit  break; case 1://for veg  loadFragment(new vegFragment()); break; case 2://for meat  break; case 3://for drink  break; } } @Override public void onNothingSelected(AdapterView> parent) { } }); } private void loadFragment(Fragment fragment) { // create a FragmentManager  FragmentManager fm = getFragmentManager(); // create a FragmentTransaction to begin the transaction and replace the Fragment  FragmentTransaction fragmentTransaction = fm.beginTransaction(); // replace the FrameLayout with new Fragment  fragmentTransaction.replace(R.id.fragment, fragment); fragmentTransaction.commit(); // save the changes  } } 

vegFragment.java:

package com.green.chegg; import android.app.Fragment; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class vegFragment extends Fragment { @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.veg_layout,container,false); //inflating layout  } }

Tab A Tab B Choose a category: 1 Tab A Tab B Choose a category: 1