error :MapViews can only be created inside instances of MapActivity

Question

I use Eclipse ,Android SDK and i have a class to do not put every code in main activity :

blablabla
import blablabla
..
..
public class Mhelper {
    static final LatLng HAMBURG = new LatLng(53.558, 9.927);
      static final LatLng KIEL = new LatLng(53.551, 9.993);
      private GoogleMap map;
      Context mContext;

    public Mhelper(Context ctx) {
          this.mContext= ctx;
    }

    public void pinpointlocation(Context context){

         map = ((SupportMapFragment) ((FragmentActivity) mContext).getSupportFragmentManager().findFragmentById(R.id.mapview))
                .getMap();
                Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)
                    .title("Hamburg"));
                Marker kiel = map.addMarker(new MarkerOptions()
                    .position(KIEL)
                    .title("Kiel")
                    .snippet("Kiel is cool")
                    .icon(BitmapDescriptorFactory
                        .fromResource(R.drawable.ic_launcher)));

                // Move the camera instantly to hamburg with a zoom of 15.
                map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));

                // Zoom in, animating the camera.
                map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
    }
....
....
....

and i put a viewmap in xml :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

...
...
...
...


<com.google.android.maps.MapView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:clickable="true"
    android:apiKey="KEY"
/>

<fragment
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.MapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/button2" />

</RelativeLayout>

And the program compile and install without any error but when i run app in emulator i get:

blablabla
04-23 11:36:32.408: E/AndroidRuntime(2515): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hach/com.example.hach.MainActivity}: android.view.InflateException: Binary XML file line #48: Error inflating class com.google.android.maps.MapView
blablabla
04-23 11:36:32.408: E/AndroidRuntime(2515): Caused by: android.view.InflateException: Binary XML file line #48: Error inflating class com.google.android.maps.MapView
blablabla
04-23 11:36:32.408: E/AndroidRuntime(2515): Caused by: java.lang.IllegalArgumentException: MapViews can only be created inside instances of MapActivity.

And i search in stack and find this ,this and this.

First one just confess he shouldn't use viewmap and second one told to read this refrence which is good one but i read it and can't find any solution which i can apply in my project.third one said Google Maps Android API v2 is good one.

And i found this link which is good example but i don't want to use tabs,should i? besides the line

import com.google.android.maps.MapActivity;

is the problem when i create new class and i want to extend MapActivity,the IDE don't know MapActivity.

Is there any thing that i can do to my current project without any complete change of app, to show the map and point a location as i code? should i extend MapActivity and add it to the project?Is there any simple solution like mapview?

well like the error says you cannot do that. why not just create the map object in your activity then pass it to your helper class — tyczj, Apr 23 '14 at 20:22
do not use `com.google.android.maps.MapActivity` that is the deprecated map activity from v1 — tyczj, Apr 23 '14 at 20:29
Yea,i did that , but same error but this time from mainactivity. — Shombol-shagol, Apr 23 '14 at 20:38
@tyczj i deleted **com.google.android.maps.MapActivity**,just testing. — Shombol-shagol, Apr 23 '14 at 20:39
You appear to be mixing and matching Maps V1 and Maps V2, which will not work. Since Maps V1 is no longer available to new apps, focus on [Maps V2 and its documentation](https://developers.google.com/maps/documentation/android/). — CommonsWare, Apr 23 '14 at 21:10
@CommonsWare I read that documents,which part of my app is V1 and which is V2. — Shombol-shagol, Apr 24 '14 at 06:30

score 0 · Answer 1 · answered Apr 24 '14 at 07:54

I figer it out.I first delete map view (CommonsWare was right it was in V1) then i add

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>

to manifest.Then it works.This problem caused by some unqualified web site which try to put a tutorials without testing them.

error :MapViews can only be created inside instances of MapActivity

1 Answers1