Custom ListView with SearchView on ActionBar/Toolbar & onItemClick listener - Android Studio

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     DESCRIPTION     

This Tutorial will cover:
✔ListView(Image, Title, Description)
✔Filterable ListView
✔SearchView on ActionBar/Toolbar to search ListView items
✔Intent to go to NewActivity onItemClick
✔BackButton in ActionBar of NewActivity

     VIDEO     


     SOURCE CODE     

Step 1: Create a new project OR Open your project

Step 2: Create New Activity File>New>Activity>EmptyActivity

Step 3: Create menu.xml under res>menu folder, to search item.

Step 4: Create model.xml in res>layout folder, to design row

Step 5: Place some images in res>drawable folder

Step 5: Code:

AndroidMenifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.blogspot.devofandroid.myapplication">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".NewActivity"
            android:parentActivityName=".MainActivity"/>
    </application>

</manifest>

activity_main.xml
<?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"
    tools:context=".MainActivity">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ListView>
</LinearLayout>

menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_settings"
        android:title="Settings"/>
    <item android:id="@+id/action_search"
        android:title="Search"
        android:icon="@android:drawable/ic_menu_search"
        app:showAsAction="always"
        app:actionViewClass="android.support.v7.widget.SearchView" />
</menu>

row.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="wrap_content"
    android:orientation="horizontal"
    android:gravity="center"
    android:padding="10dp">

    <ImageView
        android:id="@+id/mainIcon"
        android:src="@drawable/ic_launcher_background"
        android:layout_width="100dp"
        android:layout_height="100dp" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:gravity="center"
        android:layout_marginLeft="5dp"
        android:layout_marginStart="5dp">
        <TextView
            android:id="@+id/mainTitle"
            android:text="Title"
            android:textStyle="bold"
            android:textSize="20sp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/mainDesc"
            android:text="Description"
            android:textSize="20sp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </LinearLayout>

</LinearLayout>

Model.java
package com.blogspot.devofandroid.myapplication;

public class Model {
    String title;
    String desc;
    int icon;

    //constructor
    public Model(String title, String desc, int icon) {
        this.title = title;
        this.desc = desc;
        this.icon = icon;
    }

    //getters


    public String getTitle() {
        return this.title;
    }

    public String getDesc() {
        return this.desc;
    }

    public int getIcon() {
        return this.icon;
    }
}

ListViewAdapter.java
package com.blogspot.devofandroid.myapplication;

import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

public class ListViewAdapter extends BaseAdapter{

    //variables
    Context mContext;
    LayoutInflater inflater;
    List<Model> modellist;
    ArrayList<Model> arrayList;

    //constructor
    public ListViewAdapter(Context context, List<Model> modellist) {
        mContext = context;
        this.modellist = modellist;
        inflater = LayoutInflater.from(mContext);
        this.arrayList = new ArrayList<Model>();
        this.arrayList.addAll(modellist);
    }

    public class ViewHolder{
        TextView mTitleTv, mDescTv;
        ImageView mIconIv;
    }

    @Override
    public int getCount() {
        return modellist.size();
    }

    @Override
    public Object getItem(int i) {
        return modellist.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(final int postition, View view, ViewGroup parent) {
        ViewHolder holder;
        if (view==null){
            holder = new ViewHolder();
            view = inflater.inflate(R.layout.row, null);

            //locate the views in row.xml
            holder.mTitleTv = view.findViewById(R.id.mainTitle);
            holder.mDescTv = view.findViewById(R.id.mainDesc);
            holder.mIconIv = view.findViewById(R.id.mainIcon);

            view.setTag(holder);

        }
        else {
            holder = (ViewHolder)view.getTag();
        }
        //set the results into textviews
        holder.mTitleTv.setText(modellist.get(postition).getTitle());
        holder.mDescTv.setText(modellist.get(postition).getDesc());
        //set the result in imageview
        holder.mIconIv.setImageResource(modellist.get(postition).getIcon());

        //listview item clicks
        view.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //code later
                if (modellist.get(postition).getTitle().equals("Battery")){
                    //start NewActivity with title for actionbar and text for textview
                    Intent intent = new Intent(mContext, NewActivity.class);
                    intent.putExtra("actionBarTitle", "Battery");
                    intent.putExtra("contentTv", "This is Battery detail...");
                    mContext.startActivity(intent);
                }
                if (modellist.get(postition).getTitle().equals("Cpu")){
                    //start NewActivity with title for actionbar and text for textview
                    Intent intent = new Intent(mContext, NewActivity.class);
                    intent.putExtra("actionBarTitle", "Cpu");
                    intent.putExtra("contentTv", "This is Cpu detail...");
                    mContext.startActivity(intent);
                }
                if (modellist.get(postition).getTitle().equals("Display")){
                    //start NewActivity with title for actionbar and text for textview
                    Intent intent = new Intent(mContext, NewActivity.class);
                    intent.putExtra("actionBarTitle", "Display");
                    intent.putExtra("contentTv", "This is Display detail...");
                    mContext.startActivity(intent);
                }
                if (modellist.get(postition).getTitle().equals("Memory")){
                    //start NewActivity with title for actionbar and text for textview
                    Intent intent = new Intent(mContext, NewActivity.class);
                    intent.putExtra("actionBarTitle", "Memory");
                    intent.putExtra("contentTv", "This is Memory detail...");
                    mContext.startActivity(intent);
                }
                if (modellist.get(postition).getTitle().equals("Sensor")){
                    //start NewActivity with title for actionbar and text for textview
                    Intent intent = new Intent(mContext, NewActivity.class);
                    intent.putExtra("actionBarTitle", "Sensor");
                    intent.putExtra("contentTv", "This is Sensor detail...");
                    mContext.startActivity(intent);
                }
            }
        });


        return view;
    }

    //filter
    public void filter(String charText){
        charText = charText.toLowerCase(Locale.getDefault());
        modellist.clear();
        if (charText.length()==0){
            modellist.addAll(arrayList);
        }
        else {
            for (Model model : arrayList){
                if (model.getTitle().toLowerCase(Locale.getDefault())
                    .contains(charText)){
                    modellist.add(model);
                }
            }
        }
        notifyDataSetChanged();
    }

}

MainActivity.java
package com.blogspot.devofandroid.myapplication;

import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    ListView listView;
    ListViewAdapter adapter;
    String[] title;
    String[] description;
    int[] icon;
    ArrayList<Model> arrayList = new ArrayList<Model>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ActionBar actionBar = getSupportActionBar();
        actionBar.setTitle("Items List");

        title = new String[]{"Battery", "Cpu", "Display", "Memory", "Sensor"};
        description = new String[]{"Battery detail...", "Cpu detail...", "Display detail...", "Memory detail...", "Sensor detail..."};
        icon = new int[]{R.drawable.battery, R.drawable.cpu, R.drawable.display, R.drawable.memory, R.drawable.sensor};

        listView = findViewById(R.id.listView);

        for (int i =0; i<title.length; i++){
            Model model = new Model(title[i], description[i], icon[i]);
            //bind all strings in an array
            arrayList.add(model);
        }

        //pass results to listViewAdapter class
        adapter = new ListViewAdapter(this, arrayList);

        //bind the adapter to the listview
        listView.setAdapter(adapter);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu, menu);

        MenuItem myActionMenuItem = menu.findItem(R.id.action_search);
        SearchView searchView = (SearchView)myActionMenuItem.getActionView();
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String s) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String s) {
                if (TextUtils.isEmpty(s)){
                    adapter.filter("");
                    listView.clearTextFilter();
                }
                else {
                    adapter.filter(s);
                }
                return true;
            }
        });
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        if (id==R.id.action_settings){
            //do your functionality here
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

activity_new.xml
<?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:gravity="center"
    tools:context=".NewActivity">
    <TextView
        android:id="@+id/textView"
        android:text="Item Detail Here..."
        android:textSize="30sp"
        android:textColor="#000"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

NewActivity.java
package com.blogspot.atifsoftwares.myapplication;

import android.content.Intent;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

public class NewActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_new);

        ActionBar actionBar = getSupportActionBar();
        TextView mDetailTv = findViewById(R.id.textView);

        //get data from previous activity when item of listview is clicked using intent
        Intent intent = getIntent();
        String mActionBarTitle = intent.getStringExtra("actionBarTitle");
        String mContent = intent.getStringExtra("contentTv");

        //set actionbar title
        actionBar.setTitle(mActionBarTitle);
        //set text in textview
        mDetailTv.setText(mContent);

       

    }
}

Step 6: Run Project

Output
Custom ListView with SearchView on ActionBar/Toolbar & onItemClick listener - Android Studio





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