geoPoint에 OverlayItem을 만들 수 없습니다. 응용 프로그램을 분쇄하십시오.

Question

내 응용 프로그램에서 사용자에게 자동 완성 텍스트 상자에 장소를 입력하라고 요청했습니다. JSON 개체에서 위치를 성공적으로 가져올 수 있었으며 성공적으로 경도와 위도를 추출하고 이 위치에 대한 GeoPoint. GeoPoint에 대한 오버레이 아이템을 만드는 데 문제가 있습니다.

다음은 SiteOverlay 생성자의 ItemziedOverlayclass에 대한 코드입니다. 도면에 대한 새 위치 오버레이를 가져오고 있지만 populate()를 호출하고 있지만 아무 것도 성공하지 못하는 이유는 Null 포인트 ItemizedOverlay입니다.

private class SitesOverlay extends ItemizedOverlay<OverlayItem> { 

    private Drawable marker = null; 
    private OverlayItem inDrag = null; 
    private ImageView dragImage = null; 
    private int xDragImageOffset = 0; 
    private int yDragImageOffset = 0; 
    private int xDragTouchOffset = 0; 
    private int yDragTouchOffset = 0; 

    public SitesOverlay(Drawable marker) { 
     super(marker); 
     this.marker = marker; 

     dragImage = (ImageView) findViewById(R.id.drag); 
     xDragImageOffset = dragImage.getDrawable().getIntrinsicWidth()/2; 
     yDragImageOffset = dragImage.getDrawable().getIntrinsicHeight(); 

     // items.add(new OverlayItem(getPoint(24.893379, 67.028061), 
     // "Karachi", "Sindh, Pakistan")); 

    } 

    public SitesOverlay(Drawable marker, OverlayItem newlocationItem) { 
     super(marker); 
     this.marker = marker; 

     dragImage = (ImageView) findViewById(R.id.drag); 
     xDragImageOffset = dragImage.getDrawable().getIntrinsicWidth()/2; 
     yDragImageOffset = dragImage.getDrawable().getIntrinsicHeight(); 

     // items.add(new OverlayItem(getPoint(24.893379, 67.028061), 
     // "Karachi", "Sindh, Pakistan")); 

     items.add(newlocationItem); 
     populate(); 

    } 

    @Override 
    protected boolean onTap(int index) { 
     // TODO Auto-generated method stub 

     OverlayItem item = items.get(index); 
     AlertDialog.Builder dialog = new AlertDialog.Builder(
       getApplicationContext()); 
     dialog.setTitle(item.getTitle()); 
     dialog.setMessage(item.getSnippet()); 
     dialog.show(); 

     return super.onTap(index); 
    } 

    @Override 
    protected OverlayItem createItem(int i) { 
     return (items.get(i)); 
    } 

    @Override 
    public void draw(Canvas canvas, MapView mapView, boolean shadow) { 
     super.draw(canvas, mapView, shadow); 

     boundCenterBottom(marker); 
    } 

    @Override 
    public int size() { 
     return (items.size()); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent event, MapView mapView) { 
     final int action = event.getAction(); 
     final int x = (int) event.getX(); 
     final int y = (int) event.getY(); 
     boolean result = false; 

     if (action == MotionEvent.ACTION_DOWN) { 
      for (OverlayItem item : items) { 
       Point p = new Point(0, 0); 

       map.getProjection().toPixels(item.getPoint(), p); 

       if (hitTest(item, marker, x - p.x, y - p.y)) { 
        result = true; 
        inDrag = item; 
        items.remove(inDrag); 
        populate(); 

        xDragTouchOffset = 0; 
        yDragTouchOffset = 0; 

        setDragImagePosition(p.x, p.y); 
        dragImage.setVisibility(View.VISIBLE); 

        xDragTouchOffset = x - p.x; 
        yDragTouchOffset = y - p.y; 

        break; 
       } 
      } 
     } else if (action == MotionEvent.ACTION_MOVE && inDrag != null) { 
      setDragImagePosition(x, y); 
      result = true; 
     } else if (action == MotionEvent.ACTION_UP && inDrag != null) { 
      dragImage.setVisibility(View.GONE); 

      GeoPoint pt = map.getProjection().fromPixels(
        x - xDragTouchOffset, y - yDragTouchOffset); 
      OverlayItem toDrop = new OverlayItem(pt, inDrag.getTitle(), 
        inDrag.getSnippet()); 
      Toast.makeText(
        MainActivity.this, 
        "Latitude " + pt.getLatitudeE6() + "," + " " 
          + "Longitude " + pt.getLongitudeE6(), 
        Toast.LENGTH_SHORT).show(); 
      items.add(toDrop); 
      populate(); 

      inDrag = null; 
      result = true; 

      /* 
      * //--- Get the name of the location by Longitude and 
      * latitude--- Geocoder geoCoder = new 
      * Geocoder(getBaseContext(), Locale.getDefault()); try { 
      * List<Address> addresses = geoCoder.getFromLocation(
      * pt.getLatitudeE6()/1E6, pt.getLongitudeE6()/1E6, 1); 
      * String add = ""; if (addresses.size() > 0) { for (int i=0; 
      * i<addresses.get(0).getMaxAddressLineIndex(); i++) add += 
      * addresses.get(0).getAddressLine(i) + "\n"; } 
      * Toast.makeText(getBaseContext(), add, 
      * Toast.LENGTH_SHORT).show(); 
      * 
      * } catch (IOException e) { e.printStackTrace(); } 
      */ 

     } 

     return (result || super.onTouchEvent(event, mapView)); 
    } 

    private void setDragImagePosition(int x, int y) { 
     RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) dragImage 
       .getLayoutParams(); 

     lp.setMargins(x - xDragImageOffset - xDragTouchOffset, y 
       - yDragImageOffset - yDragTouchOffset, 0, 0); 
     dragImage.setLayoutParams(lp); 
    } 

} 

class GetPlaces extends AsyncTask<String, Void, ArrayList<String>> { 

    @Override 
    // three dots is java for an array of strings 
    protected ArrayList<String> doInBackground(String... args) { 

     Log.d("gottaGo", "doInBackground"); 

     ArrayList<String> predictionsArr = new ArrayList<String>(); 

     try { 

      URL googlePlaces = new URL(
        // URLEncoder.encode(url,"UTF-8"); 
        "https://maps.googleapis.com/maps/api/place/autocomplete/json?input=" 
          + URLEncoder.encode(args[0].toString(), "UTF-8") 
          + "&types=geocode&language=en&sensor=true&key=AIzaSyBBILczt124ZWZHlSYsB6hb_Fqjb2nFEaE"); 
      URLConnection tc = googlePlaces.openConnection(); 
      BufferedReader in = new BufferedReader(new InputStreamReader(
        tc.getInputStream())); 

      String line; 
      StringBuffer sb = new StringBuffer(); 
      // take Google's legible JSON and turn it into one big string. 
      while ((line = in.readLine()) != null) { 
       sb.append(line); 
      } 
      // turn that string into a JSON object 
      JSONObject predictions = new JSONObject(sb.toString()); 
      // now get the JSON array that's inside that object 
      JSONArray ja = new JSONArray(
        predictions.getString("predictions")); 

      for (int i = 0; i < ja.length(); i++) { 
       JSONObject jo = (JSONObject) ja.get(i); 
       // add each entry to our array 
       predictionsArr.add(jo.getString("description")); 
      } 
     } catch (IOException e) { 

      Log.e("YourApp", "GetPlaces : doInBackground", e); 

     } catch (JSONException e) { 

      Log.e("YourApp", "GetPlaces : doInBackground", e); 

     } 

     return predictionsArr; 

    } 

    // then our post 

    @Override 
    protected void onPostExecute(ArrayList<String> result) { 

     Log.d("YourApp", "onPostExecute : " + result.size()); 
     // update the adapter 
     adapter = new ArrayAdapter<String>(getBaseContext(), 
       R.layout.item_list); 
     adapter.setNotifyOnChange(true); 
     // attach the adapter to textview 
     textView.setAdapter(adapter); 

     for (String string : result) { 

      Log.d("YourApp", "onPostExecute : result = " + string); 
      adapter.add(string); 
      adapter.notifyDataSetChanged(); 

     } 

     Log.d("YourApp", 
       "onPostExecute : autoCompleteAdapter" + adapter.getCount()); 

    } 

} 

내 ActivityCode

import java.io.BufferedReader; 
    import java.io.IOException; 
    import java.io.InputStream; 
    import java.io.InputStreamReader; 
    import java.net.URL; 
    import java.net.URLConnection; 
    import java.net.URLEncoder; 
    import java.util.ArrayList; 
    import java.util.List; 
    import org.apache.http.HttpEntity; 
    import org.apache.http.HttpResponse; 
    import org.apache.http.client.ClientProtocolException; 
    import org.apache.http.client.HttpClient; 
    import org.apache.http.client.methods.HttpPost; 
    import org.apache.http.impl.client.DefaultHttpClient; 
    import org.json.JSONArray; 
    import org.json.JSONException; 
    import org.json.JSONObject; 
    import android.app.AlertDialog; 
    import android.graphics.Canvas; 
    import android.graphics.Point; 
    import android.graphics.drawable.Drawable; 
    import android.os.AsyncTask; 
    import android.os.Bundle; 
    import android.text.Editable; 
    import android.text.TextWatcher; 
    import android.util.Log; 
    import android.view.KeyEvent; 
    import android.view.Menu; 
    import android.view.MenuItem; 
    import android.view.MotionEvent; 
    import android.view.View; 
    import android.widget.ArrayAdapter; 
    import android.widget.AutoCompleteTextView; 
    import android.widget.Button; 
    import android.widget.EditText; 
    import android.widget.ImageView; 
    import android.widget.RelativeLayout; 
    import android.widget.Toast; 
    import com.google.android.maps.GeoPoint; 
    import com.google.android.maps.ItemizedOverlay; 
    import com.google.android.maps.MapActivity; 
    import com.google.android.maps.MapController; 
    import com.google.android.maps.MapView; 
    import com.google.android.maps.MyLocationOverlay; 
    import com.google.android.maps.OverlayItem; 

    public class MainActivity extends MapActivity { 
private MapView map = null; 
private MyLocationOverlay me = null; 
Button btn_Go; 
Drawable marker; 
EditText txtSearch; 

AutoCompleteTextView textView; 

private static final String API_KEY = "0f7ZWSUbQaZNR9_csQVFdRHpjnARCHAR1WbkFAQ"; 
ArrayAdapter<String> adapter; 

private List<OverlayItem> items = new ArrayList<OverlayItem>(); 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    map = (MapView) findViewById(R.id.map); 
    btn_Go = (Button) findViewById(R.id.BtnSearch); 

    // txtSearch = (EditText) findViewById(R.id.txt_searchbox); 
    // Set the default Location of push pin 
    map.getController().setCenter(getPoint(24.893379, 67.028061)); 
    map.setBuiltInZoomControls(true); 

    marker = getResources().getDrawable(R.drawable.pushpin); 

    marker.setBounds(0, 0, marker.getIntrinsicWidth(), 
      marker.getIntrinsicHeight()); 

    map.getOverlays().add(new SitesOverlay(marker)); 

    me = new MyLocationOverlay(this, map); 

    map.getOverlays().add(me); 

    adapter = new ArrayAdapter<String>(this, R.layout.item_list); 
    textView = (AutoCompleteTextView) findViewById(R.id.txtSearchBox); 
    adapter.setNotifyOnChange(true); 
    textView.setAdapter(adapter); 
    textView.addTextChangedListener(new TextWatcher() { 

     public void onTextChanged(CharSequence s, int start, int before, 
       int count) { 
      if (count % 3 == 1) { 
       adapter.clear(); 
       GetPlaces task = new GetPlaces(); 
       // now pass the argument in the textview to the task 
       task.execute(textView.getText().toString()); 
      } 
     } 

     public void beforeTextChanged(CharSequence s, int start, int count, 
       int after) { 
      // TODO Auto-generated method stub 

     } 

     public void afterTextChanged(Editable s) { 

     } 

    }); 

} 

public void GoTolocation(View v) { 

    String value = textView.getText().toString(); 
    // Do something with value! 
    Log.d("value", value); 
    MapController mc = map.getController(); 
    JSONObject Response = getLocationInfo(value); 
    GeoPoint p = getGeoPoint(Response); 
    // map.getOverlays().remove(0); 
    // map.getController().setCenter(getPoint(24.893379, 67.028061)); 
    map.getController().setCenter(p); 
    map.setBuiltInZoomControls(true); 
    marker = getResources().getDrawable(R.drawable.pushpin); 
    marker.setBounds(0, 0, marker.getIntrinsicWidth(), 
      marker.getIntrinsicHeight()); 
    OverlayItem newlocation = new OverlayItem(p, value, 
      "You Selected This place"); 
    SitesOverlay s = new SitesOverlay(marker, newlocation); 
    // s.SetPoint(newlocation); 
    map.getOverlays().add(s); 
    me = new MyLocationOverlay(this, map); 
    map.getOverlays().add(me); 
    mc.setZoom(10); 
    mc.animateTo(p); 
    map.invalidate(); 

} 

public static JSONObject getLocationInfo(String address) { 
    StringBuilder stringBuilder = new StringBuilder(); 
    try { 

     address = address.replaceAll(" ", "%20"); 

     HttpPost httppost = new HttpPost(
       "http://maps.google.com/maps/api/geocode/json?address=" 
         + address + "&sensor=false"); 
     HttpClient client = new DefaultHttpClient(); 
     HttpResponse response; 
     stringBuilder = new StringBuilder(); 

     response = client.execute(httppost); 
     HttpEntity entity = response.getEntity(); 
     InputStream stream = entity.getContent(); 
     int b; 
     while ((b = stream.read()) != -1) { 
      stringBuilder.append((char) b); 
     } 
    } catch (ClientProtocolException e) { 
    } catch (IOException e) { 
    } 

    JSONObject jsonObject = new JSONObject(); 
    try { 
     jsonObject = new JSONObject(stringBuilder.toString()); 
    } catch (JSONException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    return jsonObject; 
} 

public static GeoPoint getGeoPoint(JSONObject jsonObject) { 

    Double lon = new Double(0); 
    Double lat = new Double(0); 

    try { 

     lon = ((JSONArray) jsonObject.get("results")).getJSONObject(0) 
       .getJSONObject("geometry").getJSONObject("location") 
       .getDouble("lng"); 

     lat = ((JSONArray) jsonObject.get("results")).getJSONObject(0) 
       .getJSONObject("geometry").getJSONObject("location") 
       .getDouble("lat"); 

    } catch (JSONException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    return new GeoPoint((int) (lat * 1E6), (int) (lon * 1E6)); 

} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.activity_main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    case R.id.location: 
     Toast.makeText(this, "You pressed the location!", Toast.LENGTH_LONG) 
       .show(); 
     return true; 

    case R.id.street: 
     Toast.makeText(this, "You pressed the street!", Toast.LENGTH_LONG) 
       .show(); 
     if (map.isSatellite() == true) { 
      map.setSatellite(false); 
     } 
     return true; 

    case R.id.satallite: 
     Toast.makeText(this, "You pressed the satallite!", 
       Toast.LENGTH_LONG).show(); 
     if (map.isSatellite() == false) { 
      map.setSatellite(true); 
     } 

     return true; 

    default: 
     return super.onOptionsItemSelected(item); 
    } 

} 

@Override 
public void onResume() { 
    super.onResume(); 

    me.enableCompass(); 
} 

@Override 
public void onPause() { 
    super.onPause(); 

    me.disableCompass(); 
} 

@Override 
protected boolean isRouteDisplayed() { 
    return (false); 
} 

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if (keyCode == KeyEvent.KEYCODE_S) { 
     map.setSatellite(!map.isSatellite()); 
     return (true); 
    } else if (keyCode == KeyEvent.KEYCODE_Z) { 
     map.displayZoomControls(true); 
     return (true); 
    } 

    return (super.onKeyDown(keyCode, event)); 
} 

private GeoPoint getPoint(double lat, double lon) { 
    return (new GeoPoint((int) (lat * 1000000.0), (int) (lon * 1000000.0))); 
} 

이 내 주요 XML 코드

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content"> 

<com.google.android.maps.MapView 
    android:id="@+id/map" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:apiKey="0f7ZWSUbQaZNR9_csQVFdRHpjnARCHAR1WbkFAQ" 
    android:clickable="true" /> 

<ImageView android:id="@+id/drag" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:src="@drawable/pushpin" 
    android:visibility="gone" 
    android:contentDescription="@string/todo"/> 

<Button 
    android:id="@+id/BtnSearch" 
    style="?android:attr/buttonStyleSmall" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentRight="true" 
    android:layout_alignParentTop="true" 
    android:onClick="GoTolocation" 
    android:text="Go" /> 

<AutoCompleteTextView 
    android:id="@+id/txtSearchBox" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:layout_toLeftOf="@+id/BtnSearch" 
    android:ems="10" 
    android:hint="Search Here" > 

    <requestFocus /> 
</AutoCompleteTextView> 

    </RelativeLayout> 

입니다 이것은 내 mainfest 파일

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.mapview_dragdrop_marker" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="15" /> 

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 

<application 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <uses-library android:name="com.google.android.maps" /> 

    <activity 
     android:name=".MainActivity" 
     android:label="@string/title_activity_main" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

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

입니다

아래 오류 메시지가 표시되는 logcat입니다.

12-23 16:02:03.647: E/AndroidRuntime(788): FATAL EXCEPTION: main 
    12-23 16:02:03.647: E/AndroidRuntime(788): java.lang.NullPointerException 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.google.android.maps.ItemizedOverlay.getIndexToDraw(ItemizedOverlay.java:211) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.google.android.maps.ItemizedOverlay.draw(ItemizedOverlay.java:240) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.example.mapview_dragdrop_marker.MainActivity$SitesOverlay.draw(MainActivity.java:393) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.google.android.maps.Overlay.draw(Overlay.java:179) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.google.android.maps.OverlayBundle.draw(OverlayBundle.java:42) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.google.android.maps.MapView.onDraw(MapView.java:530) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.View.draw(View.java:6880) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.drawChild(ViewGroup.java:1646) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.drawChild(ViewGroup.java:1644) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.View.draw(View.java:6883) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.widget.FrameLayout.draw(FrameLayout.java:357) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.drawChild(ViewGroup.java:1646) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.drawChild(ViewGroup.java:1644) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1373) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.View.draw(View.java:6883) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.widget.FrameLayout.draw(FrameLayout.java:357) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1862) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewRoot.draw(ViewRoot.java:1522) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewRoot.performTraversals(ViewRoot.java:1258) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.view.ViewRoot.handleMessage(ViewRoot.java:1859) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.os.Handler.dispatchMessage(Handler.java:99) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.os.Looper.loop(Looper.java:130) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at android.app.ActivityThread.main(ActivityThread.java:3683) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at java.lang.reflect.Method.invokeNative(Native Method) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at java.lang.reflect.Method.invoke(Method.java:507) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at     com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
    12-23 16:02:03.647: E/AndroidRuntime(788): at dalvik.system.NativeStart.main(Native Method) 

나는 내가 심지어 오버레이를 생성하는 목록을 채우는 잘못 foing하고 무엇을 잘 모릅니다하지만 여전히 날 내가 'googleapi 귀하의 코드가 유효한 것 같다 (10)

Answer 1

이 (didn를를 사용하고

에러 제공 어떤 문제라도 찾아라.)

시도가에서는 google.maps 구현의 다른 꽤 좋은 버전을 사용하려면

MyMapViewActivity을

public class MyMapViewActivity extends MapActivity { 
public static final int MENU_MY_LOCATION = 0; 
public static final int MENU_SEARCH = MENU_MY_LOCATION+1; 
public static final int MENU_SUBMIT = MENU_MY_LOCATION+2; 

MapView myMapView = null; 
MapController mc = null; 
OverlayItem myMarker; 
MyItemizedOverlay mItemizedoverlay; 
int mInputId; 

MyLocationOverlay myLoc = null; 

GeoPoint mCurrentPoint; 

@Override 
protected boolean isRouteDisplayed() { 
    // TODO Auto-generated method stub 
    return false; 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.map); 

    myMapView = (MapView) findViewById(R.id.mapView); 

    myMapView.setBuiltInZoomControls(true); 
    myMapView.setStreetView(true); 

    mc = myMapView.getController(); 
    mc.setZoom(17); 
    myLoc = new CustomMyLocationOverlay(this, myMapView); 
    myLoc.runOnFirstFix(new Runnable() { 
     public void run() { 
      if (mCurrentPoint.equals(new GeoPoint(0,0))){ 
       mc.animateTo(myLoc.getMyLocation()); 
       mCurrentPoint = myLoc.getMyLocation(); 
      } 
      // new 
      // SearchClicked(mapSearchBox.getText().toString()).execute(); 

     } 
    }); 

    myMapView.getOverlays().add(myLoc); 
    myMapView.postInvalidate(); 

    zoomToMyLocation(); 

    Drawable drawable = this.getResources().getDrawable(R.drawable.target); 
    mItemizedoverlay = new MyItemizedOverlay(drawable, this); 

    Intent i = getIntent(); 
    Bundle extras = i.getExtras(); 
    mInputId = extras.getInt("input_id"); 
    String defaultLocation = extras.getString("default_location"); 
    defaultLocation = defaultLocation.replace("[", "").replace("]", ""); 
    String[] defLocSp = defaultLocation.split(","); 

    double lat = Double.parseDouble(defLocSp[0]); 
    double lon = Double.parseDouble(defLocSp[1]); 

    mCurrentPoint = new GeoPoint((int)lat,(int)lon); 

    if (!mCurrentPoint.equals(new GeoPoint(0,0))){ 
     mc.animateTo(mCurrentPoint); 
     setMarker(); 
    } 
} 

@Override 
protected void onResume() { 
    super.onResume(); 

    myLoc.enableCompass(); 
    myLoc.enableMyLocation(); 

} 

@Override 
protected void onPause() { 
    super.onPause(); 

    myLoc.disableCompass(); 
    myLoc.disableMyLocation(); 
} 

public void zoomToMyLocation() { 
    mCurrentPoint = myLoc.getMyLocation(); 
    if (mCurrentPoint != null) { 
     myMapView.getController().animateTo(mCurrentPoint); 
     // myMapView.getController().setZoom(10); 
    } 
} 

private class SearchClicked extends AsyncTask<Void, Void, Boolean> { 
    private String toSearch; 
    private Address address; 

    public SearchClicked(String toSearch) { 
     this.toSearch = toSearch; 
    } 

    @Override 
    protected Boolean doInBackground(Void... voids) { 

     try { 
      Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.UK); 
      List<Address> results = geocoder.getFromLocationName(toSearch, 1); 

      if (results.size() == 0) { 
       return false; 
      } 

      address = results.get(0); 

       // Now do something with this GeoPoint: 
      mCurrentPoint = new GeoPoint((int) (address.getLatitude() * 1E6), (int) (address.getLongitude() * 1E6)); 
      //Log.e("", "geocoded: "+mCurrentPoint.toString()); 
      myMapView.getController().animateTo(mCurrentPoint); 

      myMarker = new OverlayItem(mCurrentPoint, "Submit", toSearch); 
      mItemizedoverlay.addOverlay(myMarker); 
      myMapView.getOverlays().add(mItemizedoverlay); 

     } catch (Exception e) { 
      Log.e("", "Something went wrong: ", e); 
      return false; 
     } 
     return true; 
    } 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    super.onCreateOptionsMenu(menu); 

    MenuItem mi; 
    mi = menu.add(0, MENU_MY_LOCATION, 0, "My Location"); 
    mi.setIcon(android.R.drawable.ic_menu_mylocation); 

    mi = menu.add(0, MENU_SEARCH, 0, "Search"); 
    mi.setIcon(android.R.drawable.ic_menu_search); 

    mi = menu.add(0, MENU_SUBMIT, 0, "Submit"); 
    mi.setIcon(android.R.drawable.ic_menu_add); 



    return true; 
} 

@Override 
public boolean onPrepareOptionsMenu(Menu menu) { 
    menu.clear(); 

    MenuItem mi; 
    mi = menu.add(0, MENU_MY_LOCATION, 0, "My Location"); 
    mi.setIcon(android.R.drawable.ic_menu_mylocation); 

    mi = menu.add(0, MENU_SEARCH, 0, "Search"); 
    mi.setIcon(android.R.drawable.ic_menu_search); 

    mi = menu.add(0, MENU_SUBMIT, 0, "Submit"); 
    mi.setIcon(android.R.drawable.ic_menu_add); 


    return super.onPrepareOptionsMenu(menu); 
} 

@Override 
public boolean onMenuItemSelected(int featureId, MenuItem item) { 
    switch(item.getItemId()) { 
    case MENU_MY_LOCATION: 
     zoomToMyLocation(); 
     return true; 

    case MENU_SEARCH: 
     searchLocation(); 
     return true; 

    case MENU_SUBMIT: 
     submitLocation(); 

     return true; 



    default: 
     return false; 
    } 
} 

public void searchLocation(){ 
    final EditText input = new EditText(this); 

    AlertDialog.Builder userInputDialogBuilder = new AlertDialog.Builder(this); 
    userInputDialogBuilder.setTitle("Search Location") 
    .setMessage("Enter Location:") 
    .setView(input) 
    .setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int whichButton) { 


      if (!input.getText().toString().equals("")){ 
       new SearchClicked(input.getText().toString()).execute();    
      } 

     } 
    }).setOnCancelListener(new Dialog.OnCancelListener() { 
     public void onCancel(DialogInterface dialog) { 
      //mUserInputDialog = null; 
     } 
    }).show(); 
} 

public void submitLocation(){ 
    if (null != mCurrentPoint){ 
     Log.e("submit","Current point: "+mCurrentPoint.toString()); 

     Intent data = new Intent(); 
     Bundle extras = new Bundle(); 
     extras.putDouble("lat", mCurrentPoint.getLatitudeE6()); 
     extras.putDouble("lon", mCurrentPoint.getLongitudeE6()); 
     extras.putInt("input_id", mInputId); 
     data.putExtras(extras); 
     setResult(RESULT_OK,data);//Here I am Setting the Requestcode 1, you can put according to your requirement 
     finish(); 
    } 
} 

public void setCurrentLocation(GeoPoint point){ 
    mCurrentPoint = point; 

} 

public void setMarker(){ 
    myMarker = new OverlayItem(mCurrentPoint, "Submit", ""); 
    mItemizedoverlay.clearOverlay(); 
    mItemizedoverlay.addOverlay(myMarker); 
    myMapView.getOverlays().add(mItemizedoverlay); 
} 
} 

MyItemizedOverlay

public class MyItemizedOverlay extends ItemizedOverlay<OverlayItem> { 
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>(); 
Context mContext; 

public MyItemizedOverlay(Drawable defaultMarker) { 
    super(boundCenterBottom(defaultMarker)); 
} 

public void addOverlay(OverlayItem overlay) { 
    mOverlays.add(overlay); 
    populate(); 
} 

public void clearOverlay(){ 
    mOverlays.clear(); 
} 

@Override 
protected OverlayItem createItem(int i) { 
    return mOverlays.get(i); 
} 

@Override 
public int size() { 
    return mOverlays.size(); 
} 

public MyItemizedOverlay(Drawable defaultMarker, Context context) { 
    super(boundCenterBottom(defaultMarker)); 
    mContext = context; 
} 

@Override 
protected boolean onTap(int index) { 
    final OverlayItem item = mOverlays.get(index); 


AlertDialog.Builder userInputDialogBuilder = new AlertDialog.Builder(mContext); 
    userInputDialogBuilder.setTitle(item.getTitle()) 
    .setMessage(item.getSnippet()) 
    .setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int whichButton) { 

      ((CobytMapViewActivity)mContext).setCurrentLocation(item.getPoint()); 
      ((CobytMapViewActivity)mContext).submitLocation(); 

     } 
    }).setOnCancelListener(new Dialog.OnCancelListener() { 
     public void onCancel(DialogInterface dialog) { 
      //mUserInputDialog = null; 
     } 
    }).show(); 
    return true; 
} 
}