Android Studio to Demonstrate an Adapter example

 Android Studio to Demonstrate an Adapter example

In this Tutorial today learn Android Studio to Demonstrate an Adapter example This Tutorial

1. MainActivity.java:

import android.os.Bundle;

import android.app.Activity;

import android.app.ListActivity;

import android.view.Menu;

 

public class MainActivity extends ListActivity {

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        String str[] = new String[] { "C", "C++", "Java", "Andorid" };

        MyAdapter adapter = new MyAdapter(this, str);

        setListAdapter(adapter);

    }

 

}

2. MyAdapter.java:

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.TextView;

 

public class MyAdapter extends ArrayAdapter<String> {

 

    private final Context context;

    private final String[] var;

 

    public MyAdapter(Context context, String[] var) {

        super(context, R.layout.rowlayout, var);

        // TODO Auto-generated constructor stub

        this.context = context;

        this.var = var;

    }

 

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        // TODO Auto-generated method stub

        LayoutInflater li = (LayoutInflater) context

                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View row = li.inflate(R.layout.rowlayout, parent, false);

        TextView text = (TextView) row.findViewById(R.id.label);

        ImageView img = (ImageView) row.findViewById(R.id.icon);

        text.setText(var[position]);

        String s = var[position];

        if (s.startsWith("C")) {

 

            img.setImageResource(R.drawable.c_pic);

        }

        else if(s.startsWith("Java")){

            img.setImageResource(R.drawable.java);

        }

        else if(s.startsWith("Android")){

            img.setImageResource(R.drawable.ic_launcher);

        }

        else{

            //c++

            img.setImageResource(R.drawable.c_prog);

        }

            return row;

    }

 

}

3. RowLayout.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" >

 

    <ImageView

        android:id="@+id/icon"

        android:layout_width="100px"

        android:layout_height="100px"

        android:layout_marginLeft="4px"

        android:layout_marginRight="10px"

        android:layout_marginTop="4px"

        android:src="@drawable/ic_launcher" >

    </ImageView>

 

    <TextView

        android:id="@+id/label"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@+id/label"

        android:textSize="80px" >

    </TextView>

 

</LinearLayout>