Start Google Maps using intent with specified location
Modify from the last post get latitude and longitude from android.location.Address, start a intent of ACTION_VIEW, with location; to start Google Maps on the location.
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| package com.AndroidgetFromLocationName;import java.io.IOException;import java.util.List;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.location.Address;import android.location.Geocoder;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.EditText;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class AndroidgetFromLocationNameActivity extends Activity { EditText searchText; Button searchButton; ListView listviewResult; Button goButton; Geocoder myGeocoder; final static int MAX_RESULT = 10; final static String DEFAULT_SEARCH = "London"; double golat, golon; boolean govalid; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); searchText = (EditText)findViewById(R.id.searchtext); searchText.setText(DEFAULT_SEARCH); searchButton = (Button)findViewById(R.id.searchbutton); listviewResult = (ListView)findViewById(R.id.listviewresult); goButton = (Button)findViewById(R.id.gobutton); searchButton.setOnClickListener(searchButtonOnClickListener); goButton.setOnClickListener(goButtonOnClickListener); myGeocoder = new Geocoder(this); //for API Level 9 or higher if (!Geocoder.isPresent()){ Toast.makeText(AndroidgetFromLocationNameActivity.this, "Sorry! Geocoder service not Present.", Toast.LENGTH_LONG).show(); } listviewResult.setOnItemClickListener(listviewResultOnItemClickListener); govalid = false; } Button.OnClickListener goButtonOnClickListener = new Button.OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub if(govalid){ final String zoom = "12"; String stringLoc = "geo:" + golat + "," + golon + "?z=" + zoom; Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(stringLoc)); startActivity(intent); } }}; OnItemClickListener listviewResultOnItemClickListener = new OnItemClickListener(){ @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // TODO Auto-generated method stub double lat = ((Address)parent.getItemAtPosition(position)).getLatitude(); double lon = ((Address)parent.getItemAtPosition(position)).getLongitude(); String loc = "lat: " + lat + "\n" + "lon: " + lon; Toast.makeText(AndroidgetFromLocationNameActivity.this, loc, Toast.LENGTH_LONG).show(); govalid = true; golat = lat; golon = lon; } }; Button.OnClickListener searchButtonOnClickListener = new Button.OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub String searchString = searchText.getText().toString(); searchFromLocationName(searchString); govalid = false; }}; private void searchFromLocationName(String name){ try { List<Address> result = myGeocoder.getFromLocationName(name, MAX_RESULT); if ((result == null)||(result.isEmpty())){ Toast.makeText(AndroidgetFromLocationNameActivity.this, "No matches were found or there is no backend service!", Toast.LENGTH_LONG).show(); }else{ MyArrayAdapter adapter = new MyArrayAdapter(this, android.R.layout.simple_list_item_1, result); listviewResult.setAdapter(adapter); Toast.makeText(AndroidgetFromLocationNameActivity.this, "Finished!", Toast.LENGTH_LONG).show(); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); Toast.makeText(AndroidgetFromLocationNameActivity.this, "The network is unavailable or any other I/O problem occurs!", Toast.LENGTH_LONG).show(); } } public class MyArrayAdapter extends ArrayAdapter<Address> { Context mycontext; public MyArrayAdapter(Context context, int textViewResourceId, List<Address> objects) { super(context, textViewResourceId, objects); // TODO Auto-generated constructor stub mycontext = context; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub int maxAddressLineIndex = getItem(position).getMaxAddressLineIndex(); String addressLine = ""; for (int j = 0; j <= maxAddressLineIndex; j++){ addressLine += getItem(position).getAddressLine(j) + ","; } TextView rowAddress = new TextView(mycontext); rowAddress.setText(addressLine); return rowAddress; } } }akmwww.cdacians.com |
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