Hello
I have a TabActivity that loads in 3 activity classes. In those
Activity classes I have a button and an OnClickListener that tries to
open a MapActivity class. When I click the button I get a force close
and error.
Uncaught handler: thread main exiting due to uncaught exception
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.company.Name/com.company.Name.LocationMap}:
java.lang.NullPointerException
I have searched to find an example of an Activity class launching a
MapActivity class but cannot find one. If I swap out my MapActivity
class with a Activity class it works.
Here is my Activity Class that has the listener.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.location_tab);
Button btnMap = (Button) findViewById(R.id.btnMapview);
btnMap.setOnClickListener(mMapListener);
}
private OnClickListener mMapListener = new OnClickListener() {
public void onClick(View v) {
Intent mapIntent = new
Intent(getApplicationContext(),LocationMap.class);
startActivity(mapIntent);
}
};
Here is my MapActivity class
protected boolean isRouteDisplayed() {
return false;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.myMapView);
mapView.setBuiltInZoomControls(true);
mc = mapView.getController();
String coordinates[] = {"40.750386", "-73.976773"};
double lat = Double.parseDouble(coordinates[0]);
double lng = Double.parseDouble(coordinates[1]);
p = new GeoPoint(
(int) (lat * 1E6),
(int) (lng * 1E6));
mc.animateTo(p);
mc.setZoom(17);
mapView.invalidate();
}
And my Manifest
<uses-permission android:name="android.permission.INTERNET" />
<application android:icon="@drawable/logo" android:label="@string/
app_name">
<activity android:name=".Splash"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category
android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Locations"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar"></
activity>
<activity android:name=".LocationNewYork"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
</activity>
<activity android:name=".LocationSeattle"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar"></
activity>
<activity android:name=".LocationMap"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
</activity>
<uses-library android:name="com.google.android.maps"/>
</application>
</manifest>
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
