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我正在使用兩個獨立的類之一，其中一個按鈕，另一個打開谷歌地圖，我正在做一個覆蓋。如果任何人都可以看到我的意圖打開Map.class的問題讓我知道。我會拋出我的錯誤消息和代碼。找不到類異常Android
package com.state.park;
import java.util.ArrayList;
import java.util.List;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.Paint.Style;
import android.graphics.drawable.Drawable;
import android.widget.LinearLayout;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.Projection;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Map extends MapActivity {
private MapView mapView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map);
mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
mapView.setClickable(true);
Drawable marker = getResources().getDrawable(R.drawable.icon);
marker.setBounds(0, 0, marker.getIntrinsicWidth(), marker.getIntrinsicHeight());
InterestingLocations funPlaces = new InterestingLocations(marker);
mapView.getOverlays().add(funPlaces);
GeoPoint pt = funPlaces.getCenter();
mapView.getController().setCenter(pt);
mapView.getController().setZoom(15);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
class InterestingLocations extends ItemizedOverlay{
private List<OverlayItem> locations = new ArrayList<OverlayItem>();
private Drawable marker;
private GeoPoint p1, p2 ,p3;
private Paint paint;
public InterestingLocations(Drawable defaultMarker) {
super(defaultMarker);
marker = defaultMarker;
p1 = new GeoPoint((int)(34.044125 * 1000000) , (int)(-77.912636 * 1000000));
p2 = new GeoPoint((int)(34.046544 * 1000000) , (int) (-77.918043 * 1000000));
p3 = new GeoPoint((int) (34.041992 * 1000000) , (int)(-77.921476 * 1000000));
locations.add(new OverlayItem(p1 , "special1" , "special1"));
locations.add(new OverlayItem(p2 , "special2" , "special12"));
locations.add(new OverlayItem(p3 , "special3" , "special3"));
// TODO Auto-generated constructor stub
populate();
}
public void draw(Canvas canvas, MapView mapView , boolean shadow){
super.draw(canvas, mapView, shadow);
boundCenterBottom(marker);
Point from = new Point();
Point to = new Point();
paint = new Paint();
paint.setColor(Color.BLACK);
paint.setStrokeWidth(2);
paint.setStyle(Style.FILL);
Path path = new Path();
Projection proj = mapView.getProjection();
proj.toPixels(p1,from);
proj.toPixels(p2, to);
path.moveTo(from.x, from.y);
path.lineTo(to.x,to.y);
canvas.drawLine(from.x, from.y, to.x, to.y, paint);
}
@Override
protected OverlayItem createItem(int i) {
// TODO Auto-generated method stub
return locations.get(i);
}
@Override
public int size() {
// TODO Auto-generated method stub
return locations.size();
}
}
}
package com.state.park;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class CBHome extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button POI = (Button)findViewById(R.id.poi);
POI.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent(CBHome.this , Map.class);
CBHome.this.startActivity(i);
}
});
}
}
03-31 17:15:51.882: ERROR/dalvikvm(1033): Could not find class 'com.state.park.Map', referenced from method com.state.park.CBHome$1.onClick
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): FATAL EXCEPTION: main
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): java.lang.NoClassDefFoundError: com.state.park.Map
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at com.state.park.CBHome$1.onClick(CBHome.java:25)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at android.view.View.performClick(View.java:2408)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at android.view.View$PerformClick.run(View.java:8816)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at android.os.Handler.handleCallback(Handler.java:587)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at android.os.Handler.dispatchMessage(Handler.java:92)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at android.os.Looper.loop(Looper.java:123)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at java.lang.reflect.Method.invokeNative(Native Method)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at java.lang.reflect.Method.invoke(Method.java:521)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-31 17:15:55.133: ERROR/AndroidRuntime(1033): at dalvik.system.NativeStart.main(Native Method)
您的com.state.park.Map類是在您的AndroidManifest.xml文件中聲明的嗎？ – rajath 2011-03-31 16:20:31