Not seen any thing on google map android app - google-maps

Question

I don't see any thing on google map,lines type some is shown,
my first map view project is running successfully where only map is show and here when i add some more code as the tutorial goes on it is not working ..
here is the
public class MainActivity extends FragmentActivity {
private static final int GPS_ERRORDIALOG_REQUEST = 9001;
GoogleMap mMap;
#SuppressWarnings("unused")
private static final double SEATTLE_LAT = 47.60621,
SEATTLE_LNG = -122.33207, SYDNEY_LAT = -33.867487,
SYDNEY_LNG = 151.20699, NEWYORK_LAT = 40.714353,
NEWYORK_LNG = -74.005973;
private static final float DEFAULTZOOM = 5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (servicesOK()) {
setContentView(R.layout.activity_main);
if (initMap()) {
Toast.makeText(this, "Ready to map !", Toast.LENGTH_LONG)
.show();
gotoLocation(SEATTLE_LAT, SEATTLE_LNG, DEFAULTZOOM);
} else {
Toast.makeText(this, "Ready to map !", Toast.LENGTH_LONG)
.show();
}
} else {
setContentView(R.layout.activity_map_xml_control);
}
}
private void gotoLocation(double lat, double lng,
float zoom) {
LatLng ll = new LatLng(lat, lng);
CameraUpdate update = CameraUpdateFactory.newLatLngZoom(ll, zoom);
mMap.moveCamera(update);
}
public boolean servicesOK() {
int isAvailable = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(this);
if (isAvailable == ConnectionResult.SUCCESS) {
return true;
} else if (GooglePlayServicesUtil.isUserRecoverableError(isAvailable)) {
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(isAvailable,
this, GPS_ERRORDIALOG_REQUEST);
dialog.show();
} else {
Toast.makeText(this, "Can't connect to Google play servieces",
Toast.LENGTH_LONG).show();
}
return false;
}
private boolean initMap() {
if (mMap == null) {
// setContentView(R.layout.activity_main);
SupportMapFragment mapFrag = (SupportMapFragment)
getSupportFragmentManager()
.findFragmentById(R.id.map1);
// gotoLocation(SEATTLE_LAT, SEATTLE_LNG);
mMap = mapFrag.getMap();
}
return (mMap != null);
}
private void gotoLocation(double lat, double lag) {
LatLng ll = new LatLng(lat, lag);
CameraUpdate update = CameraUpdateFactory.newLatLng(ll);
mMap.moveCamera(update);
}
}
manifest file
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission a
ndroid:name="com.google.android.gms.permission.ACTIVITY_RECOGNITION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="my keyy" />
</application>

Answer 1

Have you retrieved a gray map on your phone? If so, your API_KEY for your map did not set correctly.
Please try to follow this step by step, you will finally get a map on your phone.
For MainAcitivity, sample code:
public class MainActivity extends Activity {
private static LatLng goodLatLng = new LatLng(37, -120);
private GoogleMap googleMap;
private EditText et_address, et_finalAddress;
LatLng addressPos, finalAddressPos;
Marker addressMarker;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_address = (EditText) findViewById(R.id.addressEditText);
et_finalAddress = (EditText) findViewById(R.id.finalAddressEditText);
// Initial Map
try {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}
} catch (Exception e) {
e.printStackTrace();
}
googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
// Put a dot on my current location
googleMap.setMyLocationEnabled(true);
googleMap.setIndoorEnabled(true);
googleMap.setTrafficEnabled(true);
// 3D building
googleMap.setBuildingsEnabled(true);
// Get zoom button
googleMap.getUiSettings().setZoomControlsEnabled(true);
Marker marker = googleMap.addMarker(new MarkerOptions()
.position(goodLatLng)
.title("Hello"));
}
For more details, please refer to my github here.