...I really don't understand how something this simple (and I have
done it before) doesn't work. I'm pretty sure it will turn out that I
am missing something obvious.
I just created a MapView, all it does is show the map and when I
allocate mapView to it's layout, there's a ClassCastException:
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import android.app.Activity;
import android.os.Bundle;
public class PPMMap extends MapActivity {
public MapView mapView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.mapview); // THROWS
CLASSCASTEXCEPTION
mapView.setBuiltInZoomControls(true);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:id="@+id/mapview"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<com.google.android.maps.MapView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="****************"
/>
</RelativeLayout>
09-22 17:16:03.676: ERROR/AndroidRuntime(730):
java.lang.RuntimeException: Unable to start activity ComponentInfo
{....patyo.PPMMap}: java.lang.ClassCastException:
android.widget.RelativeLayout
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2268)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2284)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.ActivityThread.access$1800(ActivityThread.java:112)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.os.Handler.dispatchMessage(Handler.java:99)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.os.Looper.loop(Looper.java:123)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.ActivityThread.main(ActivityThread.java:3948)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
java.lang.reflect.Method.invokeNative(Native Method)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
java.lang.reflect.Method.invoke(Method.java:521)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
(ZygoteInit.java:782)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
dalvik.system.NativeStart.main(Native Method)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): Caused by:
java.lang.ClassCastException: android.widget.RelativeLayout
09-22 17:16:03.676: ERROR/AndroidRuntime(730):
at ....PPMMap.onCreate(PPMMap.java:21)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1123)
09-22 17:16:03.676: ERROR/AndroidRuntime(730): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2231)
Call me an idiot, but I just don't get it.
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