Which is the best widget to display dynamic table with data in Xamarin.Android? - xamarin.android

Question

I have to display the following table:
So I want to know what is the best widget to use for the table. I want the table to be dynamic I mean if I choose some other group from the dropdown the number of items in the table to increase or to decrease and the total price to change depending on what I have in column price. What widget is the best widget to achieve that?

Answer 1

RecyclerView is the best UI control to achieve it. Because RecyclerView is Adapter pattern, so you can use the adapter to achieve dynamic what you have said.
I want the table to be dynamic I mean if I choose some other group from the dropdown the number of items in the table to increase or to decrease and the total price to change depending on what I have in column price
I have made a demo for you, you can test it and do some changes for your project:
Three .axml files:
Main.axml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button
android:id="#+id/bt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="group1"/>
<Button
android:id="#+id/bt2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="group2"/>
<Button
android:id="#+id/bt3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="group3"
/>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rv"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
item_layout, every item's 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="wrap_content">
<TextView
android:id="#+id/item_tv"
android:layout_width="match_parent"
android:textSize="30dp"
android:layout_height="wrap_content" />
</LinearLayout>
item_layout, total price's 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="wrap_content">
<TextView
android:id="#+id/foot_tv"
android:gravity="end"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
MainActivity:
using Android.App;
using Android.Widget;
using Android.OS;
using System;
using System.Collections.Generic;
using Android.Support.V7.Widget;
using Android.Views;
using Android.Content;
namespace RecycleTest
{
[Activity(Label = "RecycleTest", MainLauncher = true)]
public class MainActivity : Activity
{
RecyclerView mRecyclerView;
MyAdapter adapter;
Button bt1, bt2, bt3;
List<double> list1, list2, list3;
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
initView();
initData();
mRecyclerView = FindViewById<RecyclerView>(Resource.Id.rv);
mRecyclerView.SetLayoutManager(new LinearLayoutManager(this));
adapter = new MyAdapter(this, list1);
mRecyclerView.SetAdapter(adapter);
}
private void initData()
{
list1 = new List<double>();
list2 = new List<double>();
list3 = new List<double>();
list1.Add(1.1);
list1.Add(1.2);
list1.Add(1.3);
list2.Add(2.1);
list2.Add(2.2);
list2.Add(2.3);
list2.Add(2.4);
list3.Add(3.1);
list3.Add(3.2);
list3.Add(3.3);
list3.Add(3.4);
list3.Add(3.5);
}
public void initView() {
bt1 = FindViewById<Button>(Resource.Id.bt1);
bt2 = FindViewById<Button>(Resource.Id.bt2);
bt3 = FindViewById<Button>(Resource.Id.bt3);
bt1.Click += Bt1_Click;
bt2.Click += Bt2_Click;
bt3.Click += Bt3_Click;
}
private void Bt3_Click(object sender, System.EventArgs e)
{
adapter.change(list3);
}
private void Bt2_Click(object sender, System.EventArgs e)
{
adapter.change(list2);
}
private void Bt1_Click(object sender, System.EventArgs e)
{
adapter.change(list1);
}
}
class MyViewHolder : RecyclerView.ViewHolder
{
public TextView mtv;
public MyViewHolder(View itemView): base(itemView)
{
mtv = itemView.FindViewById<TextView>(Resource.Id.item_tv);
}
}
class MyFootViewHolder : RecyclerView.ViewHolder
{
public TextView mtv;
public MyFootViewHolder(View itemView):base(itemView)
{
mtv = itemView.FindViewById<TextView>(Resource.Id.foot_tv);
}
}
class MyAdapter :RecyclerView.Adapter{
Context mContext;
List<double> mList=new List<double>();
public override int ItemCount => mList.Count + 1;
public MyAdapter(Context context, List<Double> list)
{
this.mContext = context;
this.mList.AddRange(list);
}
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
if (GetItemViewType(position) == 0)
{
((MyViewHolder)holder).mtv.Text=(mList[position].ToString());
}
else
{
double price = 0;
for (int i = 0; i < mList.Count; i++)
{
price += mList[i];
}
((MyFootViewHolder)holder).mtv.Text=price + "";
}
}
public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
RecyclerView.ViewHolder holder;
if (viewType == 0)
{
holder = new MyViewHolder(LayoutInflater.From(mContext).Inflate(Resource.Layout.item_layout, parent, false));
}
else
{
holder = new MyFootViewHolder(LayoutInflater.From(mContext).Inflate(Resource.Layout.foot_layout, parent, false));
}
return holder;
}
public override int GetItemViewType(int position)
{
int type;
if (position != mList.Count)
{
type = 0;
}
else
{
type = 1;
}
return type;
}
public void change(List<Double> list1)
{
mList.Clear();
mList.AddRange(list1);
NotifyDataSetChanged();
}
}
}