I try to write one application for Google Maps.

Tell me, what is my mistake?

If you write like this, all of the works, the card is loaded.

public class TravelMapActivity extends MapActivity {
  private MapView mapView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.travel_map_activity);
        mapView = (MapView)findViewById(R.id.travelMapView);
    }
}

And if you create a constructor, I get these errors here.

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.travel_map_activity);
    mapView = new MapView(this, getResources().getString(R.string.google_maps_api_key));
}


 java.lang.RuntimeException: Unable to start activity ComponentInfo{de.ai.mi.maptrack/de.ai.mi.maptrack.activities.TravelMapActivity}: java.lang.IllegalStateException: You are only allowed to have a single MapView in a MapActivity

 Caused by: java.lang.IllegalStateException: You are only allowed to
 have a single MapView in a MapActivity

thanks

androidgoogle-mapsandroid-mapview

I have an application with two Broadcast Receivers, one of them to receive data and the other one to send it. I've seen that they have an attribute android:process to make them run on the application's default process or in another one. In the examples I found using google, receivers were set to run in the process ":remote".

My question is, what are the advantages and disadvantages of using each option?

androidprocessreceiver

I am new to Android programming and am trying to understand the best practices.

I want to do multiple inserts into two different database tables, but as one transaction (as the tables shared a foreign key). I want my function to return a result so that I can display a Toast or something to say that an error occurred, otherwise I want to return the row ID of the first insert.

I believe one way of doing this is sort-of as follows (Disclaimer: psuedo-ish code, probably won't compile!):

Long result = -1;
myDatabase.beginTransaction();
try {
   // Insert into first table
   ContentValue someValues = new ContentValues();
   someValues.put("dbfield1", 1);
   result = myDatabase.insert(DATABASE_TABLE_1, null, someValues);

   if (-1 != result ) {         
       // Insert into second table
       someValues.clear();
       someValues.put("dbfield2", 2);

       if( myDatabase.insert(DATABASE_TABLE_2, null, someValues) < 0 ) {
           result = -1;
       }
   }

   mDatabase.setTransactionSuccessful();
} catch(Exception e) {
    // An error occurred
    result = -1;
} finally {
   mDatabase.endTransaction();
}

Is there a simpler/better way of doing this?

androiddatabasetransactionssqlite3

i recently tested my App on a Jelly Bean device and noticed that my Actionbar Dodging Code doesnt work anymore.

I have a transparent Actionbar with OverlayMode true but want to behave the Actionbar like a solid actionbar in some of my Screens.

To make this working i have borrowed some Code from the Honeycomb Gallery Code

Basicly i check the Acionbar Height and set the topMargin of the android.R.id.content bucket to this value.

  public void setupActionbar() {
    final int sdkVersion = Build.VERSION.SDK_INT;
    int barHeight = getSupportActionBar().getHeight();
      if (sdkVersion < Build.VERSION_CODES.HONEYCOMB) {
        FrameLayout content = (FrameLayout) findViewById(android.R.id.content);
        RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams) content.getLayoutParams();

        if (params.topMargin != barHeight) {
          params.topMargin = barHeight;
          content.setLayoutParams(params);
        }

        if (!getSupportActionBar().isShowing()) {
          params.topMargin = 0;
          content.setLayoutParams(params);
        }
      } else {
        FrameLayout content = (FrameLayout) findViewById(android.R.id.content);
        LayoutParams params = content.getLayoutParams();
        if (params instanceof RelativeLayout.LayoutParams) {
          android.widget.RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) params;
          if (lp.topMargin != barHeight) {
            lp.topMargin = barHeight;
            content.setLayoutParams(lp);
          }

          if (!getActionBar().isShowing()) {
            lp.topMargin = 0;
            content.setLayoutParams(lp);
          }
        } else if (params instanceof FrameLayout.LayoutParams) {
          FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) params;
          if (lp.topMargin != barHeight) {
            lp.topMargin = barHeight;
            content.setLayoutParams(params);
          }

          if (!getActionBar().isShowing()) {
            lp.topMargin = 0;
            content.setLayoutParams(params);
          }
        }

      }

In Jelly Beans this strategy doesnt work anymore for some reason. Did Jelly Bean change the id.content Container perhabs?

androidandroid-layoutandroid-actionbarjelly-bean

i use Actionbarsherlock for my App and i like to switch the Actionbar Overlay Mode in my Code. I have 2 Fragments (one is a Mapview where i want a translucent Actionbar) the other is a ListFragment where a solid Actionbar is needed.

i tryed

requestWindowFeature((int) Window.FEATURE_ACTION_BAR & ~Window.FEATURE_ACTION_BAR_OVERLAY);

problem with this is that requesting Features only works before content is added.

i using this style to accomplish the transparent Actionbar

<style name="TransparentActionbar" parent="@style/Theme.Sherlock" xmlns:android="http://schemas.android.com/apk/res/android">
    <item name="windowActionBarOverlay">true</item>
    <item name="windowActionModeOverlay">true</item>
    <item name="abBackground">#96000000</item>
    <item name="abDivider">@null</item>
</style>

is there a way to set

<item name="windowActionBarOverlay">true</item>
<item name="windowActionModeOverlay">true</item>

to false inside the Activity/Fragment?

androidandroid-layoutactionbarsherlock

I'm converting some of my project to use fragments. How do we communicate with a fragment dialog? I want to create a fragment dialog just to get some text input from the user. When the dialog is dismissed, I'd like to pass the entered text back to the "parent" fragment (the one that started it). Example:

public class MyFragment extends Fragment {

    public void onBtnClick() {
        // What's a good way to get data back from this dialog 
        // once it's dismissed?
        DialogFragment dlgFrag = MyFragmentDialog.newInstance();
        dlgFrag.show(getFragmentManager(), "dialog"); 
    }
}

Thanks

android

I am building a REST Webservice with the help of Jersey on Glassfish. Now I am struggeling with my custom input Source for my searchQuerys.

If have a search Method:

@POST
@Path("search")
@Consumes({"application/xml", "application/json"})
@Produces({"application/xml", "application/json"})
public List<Index> search(SearchQuery searchqry) {
   ...
}

And the Class SearchQuery:

@XmlRootElement
public class SearchQuery implements Serializable {
    private static final long serialVersionUID = 1L;

    public SearchQuery() {
    }

    public SearchQuery(float lat, float lng) {
        this.lat = lat;
        this.lng = lng;
    }

    public float getLat() {
        return lat;
    }

    public void setLat(float lat) {
        this.lat = lat;
    }

    public float getLng() {
        return lng;
    }

    public void setLng(float lng) {
        this.lng = lng;
    }

    private float lat;
    private float lng;
}

And my call:

curl -v -X POST --data-binary "<SearchQuery><lat>3.3</lat><lng>5.4</lng></SearchQuery>" -H "Content-Type: application/xml" -H "Accept: application/xml" http://localhost:8080/WebApplication1/resources/index/search

I tried a restconsole to send the XML request, but I get the same error:

HTTP Status 400 - Bad Request

---

type Status report

messageBad Request

des criptionThe request sent by the client was syntactically incorrect (Bad Request).

---

GlassFish Server Open Source Edition 3.1.2

* Closing connection #0

I am missing something essentially or can somebody give me a hint how to debug the unmarshalling part inside the Application Server?

I followed the guide at http://xebee.xebia.in/2011/12/30/example-of-restful-webservice-with-xml-and-json-using-maven-jaxb-jersey-tomcat-and-curl/ and tested varius combination of Annotations but no sucess :(

restglassfishxml-parsingjersey

I have an activity with a listview in it. I implemented a custom list adapter based on ArrayAdapter. Some of the items within the list are clickable and some are not. So I implemented the onClickListener within the getView method of the listadapter.

I can refresh the listview just fine by calling the notifyDataSetChanged() method.

What I want to do is refresh the textview within the activity which contains the list whenever an item in the list is clicked. I can't think of a way to do this. Anybody have any suggestions?

This is what the activity contains:

1. TextView (Title)
2. TextView (total points) -> I want to update this
3. ListView (some items in the list are clickable)

androidlistviewclicktextviewrefresh

I'm writing a basic file browser that changes the icon used for files displayed depending on the MIME type of the file, but I'm having trouble finding the MIME type of some files, and I'm not sure why, the code I'm using to find the MIME Type is thus:

    private String getFileMimeType(File file)
{
    Uri fileUri = Uri.fromFile(file);
    String ext = MimeTypeMap.getFileExtensionFromUrl(fileUri.toString());
    return mtm.getMimeTypeFromExtension(ext);
}

It works for some file, but not for some with more complicated characters in them, which I don't really understand, example below:

The files with tildas are all functional mp3s but all return null for their MIME types, which isn't good for functioning mp3s, so I'm curious if there's any simple workaround for files with special chars in their name.

androidmime-types