Android Practices: library

Add ActionBarSherlock Library Project to your Application Project, Here is a Link for this

http://rajeshvijayakumar.blogspot.in/2013/01/how-to-add-actionbarsherlock-library-to.html

Project Structure :

activity_main.xml

</RelativeLayout>

drop_down_view.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" >

        <TextView
            android:id="@+id/name_view"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignBottom="@+id/imageView1"
            android:layout_marginLeft="17dp"
            android:layout_toRightOf="@+id/imageView1"
            android:text="Medium Text"
            android:textAppearance="?android:attr/textAppearanceMedium" />

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginLeft="14dp"
            android:src="@drawable/abs__ic_clear_normal" />

    </RelativeLayout>

styles.xml

<resources>
    <style name="spinner_style">
        <item name="android:dropDownWidth">fill_parent</item>
        <item name="android:showDividers">beginning|middle|end</item>
        <item name="android:alignmentMode">alignBounds</item>
        <item name="android:dividerHeight">2dp</item>
        <item name="android:scrollbars">none</item>
        <item name="android:scrollbarAlwaysDrawVerticalTrack">false</item>
        <item name="android:scrollbarTrackVertical">@android:color/transparent</item>
        <item name="android:dropDownSelector">@android:color/white</item>
        <item name="android:requiresFadingEdge">none</item>
    </style>
</resources>

MainActivity.java

package com.rajeshvijayakumar.icsspinner;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.widget.Toast;

import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.internal.widget.IcsAdapterView;
import com.actionbarsherlock.internal.widget.IcsAdapterView.OnItemSelectedListener;
import com.actionbarsherlock.internal.widget.IcsSpinner;

public class MainActivity extends SherlockActivity implements OnItemSelectedListener {

    private IcsSpinner mIcsSpinner;
    private IcsAdapter mAdapter;
    private String[] mNameList = { "Akash", "Akshay", "Mahesh", "Mrithula",
            "Rajesh", "Sonika" };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mIcsSpinner = (IcsSpinner) findViewById(R.id.ics_spinner);
        mAdapter = new IcsAdapter(MainActivity.this, R.layout.drop_down_view, mNameList);
        mIcsSpinner.setAdapter(mAdapter);
        mIcsSpinner.setOnItemSelectedListener(this);
    }

    public class IcsAdapter extends ArrayAdapter<String> {

        String[] nameList = new String[mNameList.length];

        public IcsAdapter(Context context, int textViewResourceId,
                String[] objects) {
            super(context, textViewResourceId, objects);
            this.nameList = objects;
        }

        @Override
        public View getDropDownView(int position, View convertView,
                ViewGroup parent) {
            return getCustomView(position, convertView, parent);
        }

        @Override
        public void setNotifyOnChange(boolean notifyOnChange) {
            super.setNotifyOnChange(notifyOnChange);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            return getCustomView(position, convertView, parent);
        }

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

            LayoutInflater inflater = getLayoutInflater();
            View row = inflater.inflate(R.layout.drop_down_view, parent, false);
            TextView spinnerText = (TextView) row.findViewById(R.id.name_view);
            if (position < mNameList.length) {
                String cateName = mNameList[position];
                spinnerText.setText(cateName);
            }
            return row;
        }
    }

    @Override
    public void onItemSelected(IcsAdapterView<?> spinAdapView, View view,
            int position, long id) {
        Toast.makeText(MainActivity.this, mNameList[position], Toast.LENGTH_LONG).show();
    }

    @Override
    public void onNothingSelected(IcsAdapterView<?> parent) {
    }
}

In AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.rajeshvijayakumar.icsspinner"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/Theme.Sherlock" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>