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Apache License
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/* Copyright 2014 ESRI *//from w w w . j a v a2s . co m * All rights reserved under the copyright laws of the United States * and applicable international laws, treaties, and conventions. * * You may freely redistribute and use this sample code, with or * without modification, provided you include the original copyright * notice and use restrictions. * * See the Sample code usage restrictions document for further information. * */ package com.arcgis.android.samples.search.placesearch; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.graphics.Color; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.Toast; import com.esri.android.map.GraphicsLayer; import com.esri.android.map.MapView; import com.esri.android.map.event.OnStatusChangedListener; import com.esri.core.geometry.Envelope; import com.esri.core.geometry.Point; import com.esri.core.map.Graphic; import com.esri.core.symbol.SimpleMarkerSymbol; import com.esri.core.symbol.TextSymbol; import com.esri.core.tasks.geocode.Locator; import com.esri.core.tasks.geocode.LocatorFindParameters; import com.esri.core.tasks.geocode.LocatorGeocodeResult; import java.util.List; public class MainActivity extends Activity { private static final String TAG = "MainActivity"; MapView mMapView; EditText mSearchEditText; String mMapViewState; // Graphics layer to show geocode and reverse geocode results GraphicsLayer mLocationLayer; Point mLocationLayerPoint; String mLocationLayerPointString; // UI components static ProgressDialog mProgressDialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Setup and show progress dialog mProgressDialog = new ProgressDialog(this) { @Override public void onBackPressed() { // Back key pressed - just dismiss the dialog mProgressDialog.dismiss(); } }; // after the content of this activity is set // the map can be accessed from the layout mMapView = (MapView)findViewById(R.id.map); mLocationLayer = new GraphicsLayer(); mMapView.addLayer(mLocationLayer); // set logo and enable wrap around mMapView.setEsriLogoVisible(true); mMapView.enableWrapAround(true); // Setup listener for map initialized mMapView.setOnStatusChangedListener(new OnStatusChangedListener() { @Override public void onStatusChanged(Object source, STATUS status) { if (source == mMapView && status == STATUS.INITIALIZED) { if (mMapViewState == null) { Log.i(TAG, "MapView.setOnStatusChangedListener() status=" + status.toString()); } else { mMapView.restoreState(mMapViewState); } } } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); // get a reference to the EditText widget for the search option View searchRef = menu.findItem(R.id.action_search).getActionView(); mSearchEditText = (EditText) searchRef.findViewById(R.id.searchText); // set key listener to start search if Enter key is pressed mSearchEditText.setOnKeyListener(new View.OnKeyListener() { @Override public boolean onKey(View view, int keyCode, KeyEvent keyEvent) { if(keyCode == KeyEvent.KEYCODE_ENTER){ onSearchButtonClicked(mSearchEditText); return true; } return false; } }); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_search) { return true; } return super.onOptionsItemSelected(item); } /** * Called from search_layout.xml when user presses Search button * * @param view */ public void onSearchButtonClicked(View view){ // Hide virtual keyboard InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); // obtain address and execute locator task String address = mSearchEditText.getText().toString(); executeLocatorTask(address); } /** * Set up the search parameters and execute the Locator task. * * @param address */ private void executeLocatorTask(String address) { // Create Locator parameters from single line address string LocatorFindParameters findParams = new LocatorFindParameters(address); // Use the centre of the current map extent as the find location point findParams.setLocation(mMapView.getCenter(), mMapView.getSpatialReference()); // Calculate distance for find operation Envelope mapExtent = new Envelope(); mMapView.getExtent().queryEnvelope(mapExtent); // assume map is in metres, other units wont work, double current envelope double distance = (mapExtent != null && mapExtent.getWidth() > 0) ? mapExtent.getWidth() * 2 : 10000; findParams.setDistance(distance); findParams.setMaxLocations(2); // Set address spatial reference to match map findParams.setOutSR(mMapView.getSpatialReference()); // Execute async task to find the address new LocatorAsyncTask().execute(findParams); mLocationLayerPointString = address; } /* * This class provides an AsyncTask that performs a geolocation request on a * background thread and displays the first result on the map on the UI * thread. */ private class LocatorAsyncTask extends AsyncTask<LocatorFindParameters, Void, List<LocatorGeocodeResult>> { private Exception mException; public LocatorAsyncTask() { } @Override protected void onPreExecute() { // Display progress dialog on UI thread mProgressDialog.setMessage(getString(R.string.address_search)); mProgressDialog.show(); } @Override protected List<LocatorGeocodeResult> doInBackground(LocatorFindParameters... params) { // Perform routing request on background thread mException = null; List<LocatorGeocodeResult> results = null; // Create locator using default online geocoding service and tell it to // find the given address Locator locator = Locator.createOnlineLocator(); try { results = locator.find(params[0]); } catch (Exception e) { mException = e; } return results; } @Override protected void onPostExecute(List<LocatorGeocodeResult> result) { // Display results on UI thread mProgressDialog.dismiss(); if (mException != null) { Log.w(TAG, "LocatorSyncTask failed with:"); mException.printStackTrace(); Toast.makeText(MainActivity.this, getString(R.string.addressSearchFailed), Toast.LENGTH_LONG).show(); return; } if (result.size() == 0) { Toast.makeText(MainActivity.this, getString(R.string.noResultsFound), Toast.LENGTH_LONG).show(); } else { // Use first result in the list LocatorGeocodeResult geocodeResult = result.get(0); // get return geometry from geocode result Point resultPoint = geocodeResult.getLocation(); // create marker symbol to represent location SimpleMarkerSymbol resultSymbol = new SimpleMarkerSymbol(Color.RED, 16, SimpleMarkerSymbol.STYLE.CROSS); // create graphic object for resulting location Graphic resultLocGraphic = new Graphic(resultPoint, resultSymbol); // add graphic to location layer mLocationLayer.addGraphic(resultLocGraphic); // create text symbol for return address String address = geocodeResult.getAddress(); TextSymbol resultAddress = new TextSymbol(20, address, Color.BLACK); // create offset for text resultAddress.setOffsetX(-4 * address.length()); resultAddress.setOffsetY(10); // create a graphic object for address text Graphic resultText = new Graphic(resultPoint, resultAddress); // add address text graphic to location graphics layer mLocationLayer.addGraphic(resultText); mLocationLayerPoint = resultPoint; // Zoom map to geocode result location mMapView.zoomToResolution(geocodeResult.getLocation(), 2); } } } @Override protected void onDestroy() { super.onDestroy(); } @Override protected void onPause() { super.onPause(); mMapViewState = mMapView.retainState(); mMapView.pause(); } @Override protected void onResume() { super.onResume(); // Start the MapView running again if (mMapView != null) { mMapView.unpause(); if (mMapViewState != null) { mMapView.restoreState(mMapViewState); } } } }