Android 安卓CNFEException
我正在尝试编写一个在地图上显示当前设备位置的应用程序。当我试图将它安装到设备上时,它说它找不到作为我主要活动的类。它还说dalvikvm无法将其解析为类的超类,这显然是MapActivity。有什么想法吗?谢谢Android 安卓CNFEException,android,maps,classnotfoundexception,Android,Maps,Classnotfoundexception,我正在尝试编写一个在地图上显示当前设备位置的应用程序。当我试图将它安装到设备上时,它说它找不到作为我主要活动的类。它还说dalvikvm无法将其解析为类的超类,这显然是MapActivity。有什么想法吗?谢谢 import java.util.List; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapC
import java.util.List;
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 com.google.android.maps.Overlay;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ZoomControls;
public class WcFinderActivity extends MapActivity implements LocationListener {
/** Called when the activity is first created. */
EditText txted = null;
Button btnSimple = null;
MapView gMapView = null;
MapController mc = null;
Drawable defaultMarker = null;
GeoPoint p = null;
double latitude = 18.9599990845, longitude = 72.819999694;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Creating TextBox displying Lat, Long
txted = (EditText) findViewById(R.id.id1);
String currentLocation = "Lat: " + latitude + " Lng: " + longitude;
txted.setText(currentLocation);
// Creating and initializing Map
gMapView = (MapView) findViewById(R.id.myGMap);
p = new GeoPoint((int) (latitude * 1000000), (int) (longitude * 1000000));
gMapView.setSatellite(true);
mc = gMapView.getController();
mc.setCenter(p);
mc.setZoom(14);
// Add a location mark
MyLocationOverlay myLocationOverlay = new MyLocationOverlay();
List<Overlay> list = gMapView.getOverlays();
list.add(myLocationOverlay);
// Adding zoom controls to Map
ZoomControls zoomControls = (ZoomControls) gMapView.getZoomControls();
zoomControls.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
gMapView.addView(zoomControls);
gMapView.displayZoomControls(true);
// Getting locationManager and reflecting changes over map if distance travel by
// user is greater than 500m from current location.
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f, this);
}
/* This method is called when use position will get changed */
public void onLocationChanged(Location location) {
if (location != null) {
double lat = location.getLatitude();
double lng = location.getLongitude();
String currentLocation = "Lat: " + lat + " Lng: " + lng;
txted.setText(currentLocation);
p = new GeoPoint((int) lat * 1000000, (int) lng * 1000000);
mc.animateTo(p);
}
}
public void onProviderDisabled(String provider) {
// required for interface, not used
}
public void onProviderEnabled(String provider) {
// required for interface, not used
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// required for interface, not used
}
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
/* User can zoom in/out using keys provided on keypad */
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_I) {
gMapView.getController().setZoom(gMapView.getZoomLevel() + 1);
return true;
} else if (keyCode == KeyEvent.KEYCODE_O) {
gMapView.getController().setZoom(gMapView.getZoomLevel() - 1);
return true;
} else if (keyCode == KeyEvent.KEYCODE_S) {
gMapView.setSatellite(true);
return true;
} else if (keyCode == KeyEvent.KEYCODE_T) {
gMapView.setTraffic(true);
return true;
}
return false;
}
/* Class overload draw method which actually plot a marker,text etc. on Map */
protected class MyLocationOverlay extends com.google.android.maps.Overlay {
@Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {
Paint paint = new Paint();
super.draw(canvas, mapView, shadow);
// Converts lat/lng-Point to OUR coordinates on the screen.
Point myScreenCoords = new Point();
mapView.getProjection().toPixels(p, myScreenCoords);
paint.setStrokeWidth(1);
paint.setARGB(255, 255, 255, 255);
paint.setStyle(Paint.Style.STROKE);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
canvas.drawBitmap(bmp, myScreenCoords.x, myScreenCoords.y, paint);
canvas.drawText("I am here...", myScreenCoords.x, myScreenCoords.y, paint);
return true;
}
}
}
01-18 15:04:07.223:W/dalvikvm3554:无法解析Lcom/tecmark/WcFinderActivity的超类;23
01-18 15:04:07.238:W/dalvikvm3554:Lcom/tecmark/WcFinderActivity类链接失败
01-18 15:04:07.238:D/AndroidRuntime3554:关闭虚拟机
01-18 15:04:07.238:W/dalvikvm3554:threadid=3:thread退出时未捕获异常组=0x4001b180
01-18 15:04:07.238:E/AndroidRuntime3554:未捕获处理程序:由于未捕获异常而退出主线程
01-18 15:04:07.278:E/AndroidRuntime3554:java.lang.RuntimeException:无法实例化活动组件信息{com.tecmark/com.tecmark.WcFinderActivity}:java.lang.ClassNotFoundException:com.tecmark.WcFinderActivity(在loader dalvik.system中)。PathClassLoader@43e57a18
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.ActivityThread.performLaunchActivityActivityThread.java:2417
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.ActivityThread.handleLaunchActivityYaActivityThread.java:2512
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.ActivityThread.access$2200ActivityThread.java:119
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.ActivityThread$H.handleMessageActivityThread.java:1863
01-18 15:04:07.278:E/AndroidRuntime3554:at android.os.Handler.dispatchMessageHandler.java:99
01-18 15:04:07.278:E/AndroidRuntime3554:at android.os.Looper.Looper.java:123
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.ActivityThread.mainActivityThread.java:4363
01-18 15:04:07.278:E/AndroidRuntime3554:at java.lang.reflect.Method.invokenactive方法
01-18 15:04:07.278:E/AndroidRuntime3554:at java.lang.reflect.Method.invokeMethod.java:521
01-18 15:04:07.278:E/AndroidRuntime3554:com.android.internal.os.ZygoteInit$methodAndArgscaler.runZygoteInit.java:860
01-18 15:04:07.278:E/AndroidRuntime3554:com.android.internal.os.ZygoteInit.mainZygoteInit.java:618
01-18 15:04:07.278:E/AndroidRuntime3554:at dalvik.system.NativeStart.main本地方法
01-18 15:04:07.278:E/AndroidRuntime3554:由以下原因引起:java.lang.ClassNotFoundException:com.tecmark.WcFinderActivity在loader dalvik.system中。PathClassLoader@43e57a18
01-18 15:04:07.278:E/AndroidRuntime3554:at dalvik.system.PathClassLoader.findClassPathClassLoader.java:243
01-18 15:04:07.278:E/AndroidRuntime3554:at java.lang.ClassLoader.LoadClassLoader.java:573
01-18 15:04:07.278:E/AndroidRuntime3554:at java.lang.ClassLoader.LoadClassLoader.java:532
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.Instrumentation.newActivityInstrumentation.java:1021
01-18 15:04:07.278:E/AndroidRuntime3554:at android.app.ActivityThread.performLaunchActivityActivityThread.java:2409
01-18 15:04:07.278:E/AndroidRuntime3554:。。。还有11个
对不起,我犯了一个愚蠢的错误。我将uses library标记移到application标记中,它现在可以在手机上编译和安装。我认为这也解释了超类不能被重新定义的错误。我的活动扩展了MapActivity,这可能是在GoogleAPI库中定义的,而不是在应用程序标记之间声明的
<?xml version="1.0" ?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.tecmark"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-library android:name="com.google.android.maps" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".WcFinderActivity"
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>