关于应用程序:--这是一个简单的应用程序,可以查找用户当前位置。
问题:-- 该应用程序在模拟器上运行良好,请参见图片。
但在手机中它没有显示MapView。请看图片。
请告诉我手机出了什么问题。在手机中,它只下载巨大的(20 MB)数据,但不显示实际地图。
Logcat 我得到 -
10-31 16:44:45.994: E/MapActivity(3026): Couldn't get connection factory client
10-31 15:47:42.319: ERROR/MapView(1773): java.lang.IllegalStateException: Null Bitmap! "loading_tile"; if seen during a test, this usually means that the image file needs to be added to the test.config file
XML FILE
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/myLocationText"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<com.google.android.maps.MapView
android:id="@+id/myMapView"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:clickable="true"
android:enabled="true"
android:apiKey="0bBgLl42nWwnTf983Y5VdIgfZI6mC7meL7Ms_qg"/>
</LinearLayout>
Code
public class WhereIam extends MapActivity {
MapController mapController;
MyPositionOverlay positionOverlay;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView myMapView=(MapView)findViewById(R.id.myMapView);
mapController=myMapView.getController();
myMapView.setSatellite(true);
myMapView.setStreetView(true);
myMapView.displayZoomControls(false);
myMapView.setBuiltInZoomControls(true);
mapController.setZoom(16);
positionOverlay = new MyPositionOverlay();
List<Overlay> overlays = myMapView.getOverlays();
overlays.add(positionOverlay);
LocationManager locationManager;
String context=Context.LOCATION_SERVICE;
locationManager=(LocationManager)getSystemService(context);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationManager.getBestProvider(criteria, true);
Location location = locationManager.getLastKnownLocation(provider);
final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}
public void onProviderDisabled(String provider){
updateWithNewLocation(null);
}
public void onProviderEnabled(String provider){ }
public void onStatusChanged(String provider, int status,
Bundle extras){ }
};
updateWithNewLocation(location);
locationManager.requestLocationUpdates(provider, 2000, 10,
locationListener);
}
private void updateWithNewLocation(Location location) {
String latLongString;
TextView myLocationText;
String addressString ="No Address Found";
myLocationText=(TextView)findViewById(R.id.myLocationText);
if(location!=null) {
// Update the map location.
positionOverlay.setLocation(location);
Double geoLat = location.getLatitude()*1E6;
Double geoLng = location.getLongitude()*1E6;
GeoPoint point = new GeoPoint(geoLat.intValue(),
geoLng.intValue());
mapController.animateTo(point);
double lat=location.getLatitude();
double lng=location.getLongitude();
latLongString = "Lat:" + lat + "\nLong:" + lng;
Geocoder gc=new Geocoder(this, Locale.getDefault());
try {
List<Address> addressess= gc.getFromLocation(lat, lng, 1);
StringBuilder sb=new StringBuilder();
if(addressess.size()>0) {
Address address=addressess.get(0);
for(int i=0;i<address.getMaxAddressLineIndex();i++) {
sb.append(address.getAddressLine(i)).append("\n");
sb.append(address.getLocality()).append("\n");
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
}
addressString = sb.toString();
}
}catch(IOException e) {}
}
else {
latLongString="No Found Location";
}
myLocationText.setText("Your current Location is \n"+latLongString+"\n"+addressString);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
我刚刚按照 goto->cmd 提示符创建了一个 api 密钥
将目录更改为 keytool 文件夹
现在运行命令 keytool -list -alias androiddebugkey -keystore "C:\Users\pc.android\debug.keystore" -storepass android -keypass android
see the image
现在我转到注册页面,我只需将 MD5 放入 EditText 并选中接受并单击“生成密钥”,然后出现以下页面,其中显示密钥 -
Now i put this key in my MapView Xml file..
正如您可以看到应用程序在模拟器中运行良好但在真实手机中运行不佳。
我哪里出错了,如何为真实手机生成第二个 API 密钥?