Hello I am developing a map view I tried to following way I created an "Intent" by clicking on a button]. Added permission and library . I created an overlay item. .My Emulator is targeted as GoogleApi 2.3.3 .My MapView key is obdained and asigned into mapview.xml
I am seeing the map with a google logo at bottom and map view controler: here is my code
MapView.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<view android:id="@+id/mv"
class="com.google.android.maps.MapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:clickable="true"
android:apiKey="046S_m5BQ43JIRtKiXQfldWwo2ddlU6dL6ca9SQ"
/>
</LinearLayout>
MapViewActivity.java
public class MapviewActivity extends MapActivity
{ private static double lat = 35.952967; // Temporary test values for lat/long
private static double lon = -83.929158 ;
private int latE6;
private int lonE6;
private MapController mapControl;
private GeoPoint gp;
private MapView mapView;
private LocationManager locationManager;
private MyOverlays itemizedoverlay;
private MyLocationOverlay myLocationOverlay;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
//requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.mapview);
mapView = (MapView) findViewById(R.id.mv);
mapView.setBuiltInZoomControls(true);
mapView.setSatellite(true);
mapControl = mapView.getController();
mapControl.setZoom(12); // Zoon 1 is world view
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, new GeoUpdateHandler());
myLocationOverlay = new MyLocationOverlay(this, mapView);
mapView.getOverlays().add(myLocationOverlay);
myLocationOverlay.runOnFirstFix(new Runnable() {
public void run() {
mapView.getController().animateTo(
myLocationOverlay.getMyLocation());
}
});
Drawable drawable = this.getResources().getDrawable(R.drawable.point);
itemizedoverlay = new MyOverlays(this, drawable);
createMarker();
}
public class GeoUpdateHandler implements LocationListener {
@Override
public void onLocationChanged(Location location) {
int lat = (int) (location.getLatitude() * 1E6);
int lng = (int) (location.getLongitude() * 1E6);
GeoPoint point = new GeoPoint(lat, lng);
createMarker();
mapControl.animateTo(point); // mapController.setCenter(point);
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
private void createMarker() {
GeoPoint p = mapView.getMapCenter();
OverlayItem overlayitem = new OverlayItem(p, "", "");
itemizedoverlay.addOverlay(overlayitem);
if (itemizedoverlay.size() > 0) {
mapView.getOverlays().add(itemizedoverlay);
}
}
@Override
protected void onResume() {
super.onResume();
myLocationOverlay.enableMyLocation();
myLocationOverlay.enableCompass();
}
@Override
protected void onPause() {
super.onResume();
myLocationOverlay.disableMyLocation();
myLocationOverlay.disableCompass();
}
// to set the satellite and traffic view
public boolean onKeyDown(int keyCode, KeyEvent e){
if(keyCode == KeyEvent.KEYCODE_S){
mapView.setSatellite(mapView.isSatellite());
return true;
} else if(keyCode == KeyEvent.KEYCODE_T){
mapView.setTraffic(mapView.isTraffic());
mapControl.animateTo(gp); // To ensure change displays immediately
}
return(super.onKeyDown(keyCode, e));
}
// Required method since class extends MapActivity
protected boolean isRouteDisplayed() {
return true; // display a route
}
here is my MyOverlays.java
public class MyOverlays extends ItemizedOverlay<OverlayItem> {
private static int maxNum = 5;
private OverlayItem overlays[] = new OverlayItem[maxNum];
private int index = 0;
private boolean full = false;
private Context context;
private OverlayItem previousoverlay;
public MyOverlays(Context context, Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
this.context = context;
}
@Override
protected OverlayItem createItem(int i) {
return overlays[i];
}
@Override
public int size() {
if (full) {
return overlays.length;
} else {
return index;
}
}
public void addOverlay(OverlayItem overlay) {
if (previousoverlay != null) {
if (index < maxNum) {
overlays[index] = previousoverlay;
} else {
index = 0;
full = true;
overlays[index] = previousoverlay;
}
index++;
populate();
}
this.previousoverlay = overlay;
}
protected boolean onTap(int index) {
OverlayItem overlayItem = overlays[index];
Builder builder = new AlertDialog.Builder(context);
builder.setMessage("This will end the activity");
builder.setCancelable(true);
builder.setPositiveButton("I agree", new OkOnClickListener());
builder.setNegativeButton("No, no", new CancelOnClickListener());
AlertDialog dialog = builder.create();
dialog.show();
return true;
};
private final class CancelOnClickListener implements
DialogInterface.OnClickListener {
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "You clicked yes", Toast.LENGTH_LONG)
.show();
}
}
private final class OkOnClickListener implements
DialogInterface.OnClickListener {
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "You clicked no", Toast.LENGTH_LONG).show();
}
}
}
My Android.manifest
<uses-sdk android:minSdkVersion="10" />
<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" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"/>
<application
android:icon="@drawable/drive_eat_icon"
android:label="@string/app_name" android:allowClearUserData="true" android:debuggable="true">
<activity
android:name=".MainScreen"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".DriveatmapActivity"></activity>
<activity android:name=".MapviewActivity"></activity>
<activity android:name=".FoodjointListActivity"></activity>
<activity android:name=".SubmitFormActivity"></activity>
<activity android:name=".MyOverlays"/>
<uses-library android:required="true" android:name="com.google.android.maps"></uses-library>
</application>
please suggest what to do . if you need any code please let me know. I am seeing the google map with only grey tiles.
Use it to get the Valid API key--
that is the exact path--
keytool -list -keystore "C:\Users\XYZ\.android\debug.keystore"
Total path for cmd prompt to get the MD5 fingureprint for the GoogleMap API Key----
if you are using eclipse then--
D:\eclipse\jre\bin>keytool -list -keystore "C:\Users\XYZ\.android\debug.keystore"
MD5 fingurePrint will look like this--
3E:F4:D6:E6:93:4D:BB:B8:62:3A:D6:0F:E0:FC:4C:65
When u get the fingurePrint number afterthat to get the API Key use this link---
http://code.google.com/android/add-ons/google-apis/maps-api-signup.html
Then u will get API key of your system and can get the Map easily instread of grids....
Use this key in your MapView.xml---
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:enabled="true"
android:apiKey="046S_m5BQ43JIRtKiXQfldWwo2ddlU6dL6ca9SQ" />
</LinearLayout>
//instead of your view
//use this
<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:enabled="true"
android:apiKey="046S_m5BQ43JIRtKiXQfldWwo2ddlU6dL6ca9SQ" />
来源：https://stackoverflow.com/questions/9872469/mapview-showing-in-grey-tiles-map-not-showing-in-android-google-api-2-3-3