Android Practices: custom adapter example in android

Sunday, 11 August 2013

Instant Adapter View Handler Example in Android

Get Instant Adapter Library from the following Url : https://github.com/ragunathjawahar/instant-adapter

Import and Add Instant library Project to your Project as shown below :

Then use the following code :

In activity_main.xml

In list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <ImageView
            android:id="@+id/person_image"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher" />

        <TextView
            android:id="@+id/person_name"
            android:layout_width="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_height="wrap_content"
            android:text="TextView" />

    </LinearLayout>

</RelativeLayout>

Create Person.java Model

package com.rajeshvijayakumar.insta;

public class Person {

   private int photoResId;
   private String name;

   public Person(int photoResId, String name) {

       this.photoResId = photoResId;
       this.name = name;
   }

   public int getPhotoResId() {
       return photoResId;
   }

   public void setPhotoResId(int photoResId) {
       this.photoResId = photoResId;
   }

   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

}

MainActivity.java

package com.rajeshvijayakumar.insta;
public class MainActivity extends Activity implements Evaluator<Person>,
       OnItemClickListener {

   private ListView mPersonListView;
   private InstantAdapter<Person> mAdapter;
   private List<Person> mPersons;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       mPersonListView = (ListView) findViewById(R.id.name_list_view);
       mPersons = getPersons();
       mAdapter = new InstantAdapter<Person>(MainActivity.this,
               R.layout.list_item, Person.class, mPersons);
       mAdapter.setViewHandler(R.layout.list_item, MainActivity.this);
       mAdapter.setViewHandler(R.id.person_image, MainActivity.this);
       mAdapter.setViewHandler(R.id.person_name, MainActivity.this);
       mPersonListView.setAdapter(mAdapter);
       mPersonListView.setOnItemClickListener(this);
   }

   private List<Person> getPersons() {
       List<Person> personLst = new ArrayList<Person>();
       personLst.add(new Person(R.drawable.ic_fav, "Rajesh"));
       personLst.add(new Person(R.drawable.ic_rate, "Mahesh"));
       personLst.add(new Person(R.drawable.ic_person, "Akshay"));
       personLst.add(new Person(R.drawable.ic_group, "Aakash"));
       return personLst;
   }

   @Override
   public void handleView(ListAdapter adapter, View parent, View view,
           Person person, int position) {

       switch (view.getId()) {
       case R.id.person_image:
           ((ImageView) view).setImageResource(person.getPhotoResId());
           break;
       case R.id.person_name:
           ((TextView) view).setText(person.getName());
           break;
       }
   }

   @Override
   public void onItemClick(AdapterView<?> adpaView, View v, int position,
           long id) {
       Toast.makeText(this, mPersons.get(position).getName().toString(),
               Toast.LENGTH_SHORT).show();
   }
}

Output :

Source Code : Coming soon to Github...........

Thursday, 11 April 2013

Alternative to Custom Adapter : Instant Adapter Example in Android

Get Instant Adapter Library from the following Url : https://github.com/ragunathjawahar/instant-adapter

Import and Add Instant library Project to your Project as shown below :

Then use the following code :

In activity_main.xml

In list_item.xml

Create Person.java Model

package com.rajeshvijayakumar.model;

import com.mobsandgeeks.adapters.InstantText;
import com.rajeshvijayakumar.insta.R;

public class Person {

    private String name;
    private String phoneNo;
    private String emailId;

    public Person(String name, String phoneNo, String emailId) {
        this.name = name;
        this.phoneNo = phoneNo;
        this.emailId = emailId;
    }

    @InstantText(viewId = R.id.name)
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @InstantText(viewId = R.id.phone_no, formatString = "Mob : %s")
    public String getPhoneNo() {
        return phoneNo;
    }

    public void setPhoneNo(String phoneNo) {
        this.phoneNo = phoneNo;
    }

    @InstantText(viewId = R.id.email, formatString = "Email : %s")
    public String getEmailId() {
        return emailId;
    }

    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }
}

MainActivity.java

package com.rajeshvijayakumar.insta;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;

import com.mobsandgeeks.adapters.InstantAdapter;
import com.rajeshvijayakumar.model.Person;

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

public class MainActivity extends Activity {

    private ListView mPersonListView;
    private InstantAdapter mInsAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mPersonListView = (ListView) findViewById(R.id.person_list_view);
        mInsAdapter = new InstantAdapter<Person>(this, R.layout.list_item, Person.class, getPersons());
        mPersonListView.setAdapter(mInsAdapter);
    }

    private List<Person> getPersons() {

        List<Person> persons = new ArrayList<Person>();
        persons.add(new Person("Rajesh", "9600272370", "rajesh@gmail.com"));
        persons.add(new Person("Kuberan", "3224231223", "kuberan@gmail.com"));
        persons.add(new Person("Ramanan", "9873272323", "ramanan@gmail.com"));
        persons.add(new Person("Kalidasan", "9723476322", "kali@gmail.com"));

        return persons;
    }
}

Output :

Source Code : Download this example here