Databases
StackOverflow2013
Postsdbo
POAndroid : how to capture a image of GPS location
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAndroid : how to capture a image of GPS location
    text
    copied!<p>I am using Google Maps for finding the location on a provided address. </p> <p>I want to store the image of location which I get from Google Maps <code>onClick</code>.</p> <p>Does anyone know how to do this?</p> <p>Here is my code for google map &amp; storing onClick</p> <pre><code>public class TestGPSActivity extends MapActivity { MapView mapView; private MapController mc; private GeoPoint p; private double lng; private double lat; private Address address; private View mCurrentUrlMask; private File imageFile; class MapOverlay extends com.google.android.maps.Overlay { @Override public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) { super.draw(canvas, mapView, shadow); //---translate the GeoPoint to screen pixels--- Point screenPts = new Point(); mapView.getProjection().toPixels(p, screenPts); //---add the marker--- Bitmap bmp = BitmapFactory.decodeResource( getResources(), R.drawable.pin); canvas.drawBitmap(bmp, screenPts.x, screenPts.y-50, null); return true; } } public boolean onTouchEvent(MotionEvent event, MapView mapView) { //---when user lifts his finger--- if (event.getAction() == 1) { GeoPoint p = mapView.getProjection().fromPixels( (int) event.getX(), (int) event.getY()); Geocoder geoCoder = new Geocoder( getBaseContext(), Locale.getDefault()); try { List&lt;Address&gt; addresses = geoCoder.getFromLocation( p.getLatitudeE6() / 1E6, p.getLongitudeE6() / 1E6, 1); String add = ""; if (addresses.size() &gt; 0) { for (int i=0; i&lt;addresses.get(0).getMaxAddressLineIndex(); i++) add += addresses.get(0).getAddressLine(i) + "\n"; } Toast.makeText(getBaseContext(), add, Toast.LENGTH_LONG).show(); } catch (IOException e) { e.printStackTrace(); } return true; } else return false; } /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.gps_main); mapView = (MapView) findViewById(R.id.mapView); mapView.setDrawingCacheEnabled(true); // image naming and path to include sd card appending name you choose for file String mPath = Environment.getExternalStorageDirectory().toString() + "/" + GPSActivity.DIRECTORY; // create bitmap screen capture Bitmap bitmap; View v1 = mapView.getRootView(); v1.setDrawingCacheEnabled(true); bitmap = Bitmap.createBitmap(v1.getDrawingCache()); v1.setDrawingCacheEnabled(false); OutputStream fout = null; imageFile = new File(DemoCamGPSActivity.DIRECTORY); try { fout = new FileOutputStream(imageFile); bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout); fout.flush(); fout.close(); } catch (FileNotFoundException e) { System.out.println("in file not found"); e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } LinearLayout zoomLayout = (LinearLayout)findViewById(R.id.zoom); View zoomView = mapView.getZoomControls(); zoomLayout.addView(zoomView, new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); mapView.displayZoomControls(true); mc = mapView.getController(); Geocoder geocoder = new Geocoder(this, Locale.getDefault()); List&lt;Address&gt; addresses = null; try { addresses = geocoder.getFromLocationName(getIntent().getStringExtra("address"), 1); } catch (IOException e) { } try{ address = addresses.get(0); } catch (Exception e) { flash("Unable to locate given address"); startActivity(new Intent(this, GPSMainActivity.class)); finish(); } try{ lng = address.getLongitude(); lat = address.getLatitude(); GPSActivity.writeLog(getIntent().getStringExtra("address") +" GPS co-ordibnates : "+lat+" , "+lng); }catch (Exception e) { } p = new GeoPoint( (int) (lat * 1E6), (int) (lng * 1E6)); mc.animateTo(p); mc.setZoom(17); //---Add a location marker--- MapOverlay mapOverlay = new MapOverlay(); List&lt;Overlay&gt; listOfOverlays = mapView.getOverlays(); listOfOverlays.clear(); listOfOverlays.add(mapOverlay); mapView.invalidate(); mapView.invalidate(); } private void flash(String data) { Toast.makeText(getApplicationContext(), data, Toast.LENGTH_LONG).show(); } @Override protected boolean isRouteDisplayed() { // TODO Auto-generated method stub return false; } public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode == KeyEvent.KEYCODE_BACK) { startActivity(new Intent(this, GPSMainActivity.class)); finish(); } return super.onKeyDown(keyCode, event); } } </code></pre> <p>I am getting this error</p> <pre><code>03-28 16:54:12.580: E/AndroidRuntime(30010): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mentha.Demo/com.mentha.Demo.TestGPSActivity}: java.lang.NullPointerException </code></pre> <p>I am getting error on this perticular codes</p> <pre><code> // create bitmap screen capture Bitmap bitmap; View v1 = mapView.getRootView(); v1.setDrawingCacheEnabled(true); bitmap = Bitmap.createBitmap(v1.getDrawingCache()); v1.setDrawingCacheEnabled(false); OutputStream fout = null; imageFile = new File(DemoCamGPSActivity.DIRECTORY); try { fout = new FileOutputStream(imageFile); bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout); fout.flush(); fout.close(); } catch (FileNotFoundException e) { System.out.println("in file not found"); e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } Uri uri = Uri.fromFile(new File(mPath)); </code></pre> <p>Please help me out.. thanks in advance</p>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload