Search Address :- Get Geopoint from location name.

public static GeoPoint searchAddress(Context mContext,String mAddress)
    {
        GeoPoint mGeoPoint=null;
        Geocoder coder = new Geocoder(mContext);
        List<Address> address;
        try
        {
            address = coder.getFromLocationName(mAddress,5);
            if(address==null)
            {
                return null;
            }
            for(int i=0;i<1;i++)
            {
                Address location = address.get(i);
                mGeoPoint=new GeoPoint((int)(location.getLatitude()*1E6), (int)(location.getLongitude()*1E6));
            }
        }
        catch(Exception e)
        {
            return null;
        }
        return mGeoPoint;
    }

Note:
Add Permission in Menifest.xml
<'uses-permission android:name="android.permission.INTERNET"/>