지금 위도 경도 수동으로 입력하여 위치는 찾아 냅니다..
근데 원하는건 위치를 표시 하게 하고 싶어서요;;; 지금 막 짜맞추기 햇는데 ㅠ
고수님들 도와주세요... 소스 추가 좀 부탁드려요;;

package com.test;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.google.android.maps.*;

public class test extends Activity {
 
 private EditText lat;
 private EditText lon;
 //EditText  txted   = null;
 //Button   btnSimple  = null;
 MapView   gMapView  = null;
 MapController mc    = null;
 //Drawable  defaultMarker = null;
 GeoPoint  p    = null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
       
        Button btn = (Button)findViewById(R.id.map);
        lat = (EditText)findViewById(R.id.lat);
        lon = (EditText)findViewById(R.id.lon);
     
       
        btn.setOnClickListener(new View.OnClickListener()
         {
          public void onClick(View view)
           {
           String _lat = lat.getText().toString();
           String _lon = lon.getText().toString();
           Uri uri = Uri.parse("geo:" + _lat + "," + _lon);
           
           startActivity(new Intent(Intent.ACTION_VIEW,uri));
           }
   
   
   
  });
    }
protected class MyLocationOverlay extends com.google.android.maps.Overlay {
  
  @Override
  public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {
   Paint paint = new Paint();
   
   super.draw(canvas, mapView, shadow);
   // Converts lat/lng-Point to OUR coordinates on the screen.
   Point myScreenCoords = new Point();
   mapView.getProjection().toPixels(p, myScreenCoords);
   
   paint.setStrokeWidth(1);
   paint.setARGB(255, 255, 255, 255);
   paint.setStyle(Paint.Style.STROKE);
   
   Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.marker);
   
   canvas.drawBitmap(bmp, myScreenCoords.x, myScreenCoords.y, paint);
   canvas.drawText("I am here...", myScreenCoords.x, myScreenCoords.y, paint);
   return true;
  }
 }
}

--------------------------------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TableLayout
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:stretchColumns="1,2">

<TableRow>
 <TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:paddingLeft="2dip"
  android:paddingRight="4dip"
  android:text="위도 경도:"/>
 <EditText
  android:id="@+id/lat"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:cursorVisible="true"
  android:editable="true"
  android:singleLine="true"
  android:layout_weight="1"/>
 <EditText
  android:id="@+id/lon"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:cursorVisible="true"
  android:editable="true"
  android:singleLine="true"
  android:layout_weight="1"/>
 </TableRow>
</TableLayout>

<Button
 android:id="@+id/map"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="지도 보기!"
 />
</LinearLayout>