android application error

Question

my xml code is:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 >
<com.google.android.maps.MapView
 android:id="@+id/mapView"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:enable="true"
 android:clickable="true"
 android:apiKey="0THdCiXY7jaJ9Br1ZQahFE4Lu1xTv1hAiVJBvxQ"
 />
</RelativeLayout>

and manifest is:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.google.haha"
 android:versionCode="1"
 android:versionName="1.0">
 <uses-sdk android:minSdkVersion="8" />
 <uses-permission android:name="android.permission.INTERNET"></uses-permission>
 <application android:icon="@drawable/icon" android:label="@string/app_name">
 <uses-library android:name="com.google.android.maps"/> 
 <activity android:name=".NewActivity"
 android:label="@string/app_name">
 <intent-filter>
 <action android:name="android.intent.action.MAIN" />
 <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
 </activity>
 </application>
</manifest>

And this is main code:

package com.google.haha;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import android.app.Activity;
import android.os.Bundle;
public class NewActivity extends MapActivity {
 /** Called when the activity is first created. */
 MapController mControl;
 GeoPoint GeoP;
 MapView mapV;
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 mapV=(MapView)findViewById(R.id.mapView);
 mapV.displayZoomControls(true);
 mapV.setBuiltInZoomControls(true);
 double lat=21.00;
 double longi=79.00;
 GeoP=new GeoPoint((int)(lat*1E6),(int)(longi*1E6));
 mControl=mapV.getController();
 mControl.animateTo(GeoP);
 mControl.setZoom(12);
 }
 @Override
 protected boolean isRouteDisplayed() {
 // TODO Auto-generated method stub
 return false;
 }
}

Everything is fine but I am getting error an on line:

mapV=(MapView)findViewById(R.id.mapView);

id field is not recognised.

• James: You know this problem comes up a lot. I know it has something to do with the import of the pre-compiled resources folder. I never did figure out why sometimes I needed to import it directly and why sometimes Eclipse handled the dependency.
• Egor: The first thing you should is to clean your project, Project->Clean in main menu. Maybe this will help.
• Kleptine: I'm not quite sure what you mean by the error, but you may try cleaning the project. That should recompile your R.java file.
• Ankit Gomkale: thanks everybody, that prob is resolved but nw i came up with other prob... m getting only gray tiles not maps... ny idea why dis hppning???

Answer 1

try to clean and rebuild your project, because that problem comes up sometimes on Eclipse IDE , the id of your MapView is not recognised on your R.java file :

Project ==> Clean ==> Choose your Project and Clic OK

Answer 2

<com.google.android.maps.MapView
 android:id="@+id/mapView"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 **android:enable="true"** MUST BE android:enabled="true"
 android:clickable="true"
 android:apiKey="0THdCiXY7jaJ9Br1ZQahFE4Lu1xTv1hAiVJBvxQ"
 />
</RelativeLayout>